CBS pair domain found in 5'-AMP (adenosine monophosphate)-activated protein kinase; The 5'-AMP (adenosine monophosphate)-activated protein kinase (AMPK) coordinates metabolic function with energy availability by responding to changes in intracellular ATP (adenosine triphosphate) and AMP concentrations. Most of the members of this cd contain two Bateman domains, each of which is composed of a tandem pair of cystathionine beta-synthase (CBS) motifs. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 306 TYHNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLDITVTQALQHRSQYFEGVVKC 385
Cdd:cd04641    1 TYENIATASMDTPVIDALNLFVERRVSALPIVDEDGRVVDIYAKFDVINLAAEKTYNNLDLTVGEALQHRSEDFEGVHTC 80

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....
gi 887242656 386 SKLETLETIVDRIVRAEVHRLVVVNEADSIVGIISLSDILQALI 429
Cdd:cd04641   81 TLNDTLETIIDRIVKAEVHRLVVVDEEDRLEGIVSLSDILKYLV 124

CBS pair domain found in 5'-AMP (adenosine monophosphate)-activated protein kinase; The 5'-AMP (adenosine monophosphate)-activated protein kinase (AMPK) coordinates metabolic function with energy availability by responding to changes in intracellular ATP (adenosine triphosphate) and AMP concentrations. Most of the members of this cd contain two Bateman domains, each of which is composed of a tandem pair of cystathionine beta-synthase (CBS) motifs. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 306 TYHNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLDITVTQALQHRSQYFEGVVKC 385
Cdd:cd04641    1 TYENIATASMDTPVIDALNLFVERRVSALPIVDEDGRVVDIYAKFDVINLAAEKTYNNLDLTVGEALQHRSEDFEGVHTC 80

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....
gi 887242656 386 SKLETLETIVDRIVRAEVHRLVVVNEADSIVGIISLSDILQALI 429
Cdd:cd04641   81 TLNDTLETIIDRIVKAEVHRLVVVDEEDRLEGIVSLSDILKYLV 124

CBS-domain-containing membrane protein [Signal transduction mechanisms];

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 233 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALY-ILTHKRILKFLQLFMSDMPKPAFMKQNLDELgigTYHNIA 311
Cdd:COG3448   10 RDVVTVSPDTTLREALELMREHGIRGLPVVD--EDGRLVgIVTERDLLRALLPDRLDELEERLLDLPVEDV---MTRPVV 84

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....*..
gi 887242656 312 FIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAE 358
Cdd:COG3448   85 TVTPDTPLEEAAELMLEHGIHRLPVVDDDGRLVGIVTRTDLLRALAR 131

CBS domain; CBS domains are small intracellular modules that pair together to form a stable globular domain. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain. CBS domains have been shown to bind ligands with an adenosyl group such as AMP, ATP and S-AdoMet. CBS domains are found attached to a wide range of other protein domains suggesting that CBS domains may play a regulatory role making proteins sensitive to adenosyl carrying ligands. The region containing the CBS domains in Cystathionine-beta synthase is involved in regulation by S-AdoMet. CBS domain pairs from AMPK bind AMP or ATP. The CBS domains from IMPDH and the chloride channel CLC2 bind ATP.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 887242656  308 HNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAE 358
Cdd:pfam00571   7 KDVVTVSPDTTLEEALELMREHGISRLPVVDEDGKLVGIVTLKDLLRALLG 57

CBS domain; CBS domains are small intracellular modules that pair together to form a stable globular domain. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain. CBS domains have been shown to bind ligands with an adenosyl group such as AMP, ATP and S-AdoMet. CBS domains are found attached to a wide range of other protein domains suggesting that CBS domains may play a regulatory role making proteins sensitive to adenosyl carrying ligands. The region containing the CBS domains in Cystathionine-beta synthase is involved in regulation by S-AdoMet. CBS domain pairs from AMPK bind AMP or ATP. The CBS domains from IMPDH and the chloride channel CLC2 bind ATP.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 887242656  233 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILKFL 282
Cdd:pfam00571   7 KDVVTVSPDTTLEEALELMREHGISRLPVVDE-DGKLVGIVTLKDLLRAL 55

CBS pair domain found in 5'-AMP (adenosine monophosphate)-activated protein kinase; The 5'-AMP (adenosine monophosphate)-activated protein kinase (AMPK) coordinates metabolic function with energy availability by responding to changes in intracellular ATP (adenosine triphosphate) and AMP concentrations. Most of the members of this cd contain two Bateman domains, each of which is composed of a tandem pair of cystathionine beta-synthase (CBS) motifs. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 306 TYHNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLDITVTQALQHRSQYFEGVVKC 385
Cdd:cd04641    1 TYENIATASMDTPVIDALNLFVERRVSALPIVDEDGRVVDIYAKFDVINLAAEKTYNNLDLTVGEALQHRSEDFEGVHTC 80

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....
gi 887242656 386 SKLETLETIVDRIVRAEVHRLVVVNEADSIVGIISLSDILQALI 429
Cdd:cd04641   81 TLNDTLETIIDRIVKAEVHRLVVVDEEDRLEGIVSLSDILKYLV 124

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains superfamily; The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 308 HNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKtYNNLDITVTQALQhrsqyfEGVVKCSK 387
Cdd:cd02205    2 RDVVTVDPDTTVREALELMAENGIGALPVVDDDGKLVGIVTERDILRALVEG-GLALDTPVAEVMT------PDVITVSP 74

                         90       100       110
                 ....*....|....*....|....*....|....*....
gi 887242656 388 LETLETIVDRIVRAEVHRLVVVNEADSIVGIISLSDILQ 426
Cdd:cd02205   75 DTDLEEALELMLEHGIRRLPVVDDDGKLVGIVTRRDILR 113

CBS-domain-containing membrane protein [Signal transduction mechanisms];

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 233 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALY-ILTHKRILKFLQLFMSDMPKPAFMKQNLDELgigTYHNIA 311
Cdd:COG3448   10 RDVVTVSPDTTLREALELMREHGIRGLPVVD--EDGRLVgIVTERDLLRALLPDRLDELEERLLDLPVEDV---MTRPVV 84

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....*..
gi 887242656 312 FIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAE 358
Cdd:COG3448   85 TVTPDTPLEEAAELMLEHGIHRLPVVDDDGRLVGIVTRTDLLRALAR 131

Signal-transduction protein containing cAMP-binding, CBS, and nucleotidyltransferase domains [Signal transduction mechanisms];

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 308 HNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLDITVTQALQHRsqyfegVVKCSK 387
Cdd:COG2905    7 RDVVTVSPDATVREAARLMTEKGVGSLVVVDDDGRLVGIITDRDLRRRVLAEGLDPLDTPVSEVMTRP------PITVSP 80

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|..
gi 887242656 388 LETLETIVDRIVRAEVHRLVVVnEADSIVGIISLSDILQALI 429
Cdd:COG2905   81 DDSLAEALELMEEHRIRHLPVV-DDGKLVGIVSITDLLRALS 121

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the ACT domain; The putative Acetoin Utilization Protein (Acub) from Vibrio Cholerae contains a CBS pair domain. The acetoin utilization protein plays a role in growth and sporulation on acetoin or butanediol for use as a carbon source. Acetoin is an important physiological metabolite excreted by many microorganisms. It is used as an external energy store by a number of fermentive bacteria. Acetoin is produced by the decarboxylation of alpha-acetolactate. Once superior carbon sources are exhausted, and the culture enters stationary phase, acetoin can be utilised in order to maintain the culture density. The conversion of acetoin into acetyl-CoA or 2,3-butanediol is catalysed by the acetoin dehydrogenase complex and acetoin reductase/2,3-butanediol dehydrogenase, respectively. Acetoin utilization proteins, acetylpolyamine amidohydrolases, and histone deacetylases are members of an ancient protein superfamily.This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in the acetoin utilization proteins in bacteria. Acetoin is a product of fermentative metabolism in many prokaryotic and eukaryotic microorganisms. They produce acetoin as an external carbon storage compound and then later reuse it as a carbon and energy source during their stationary phase and sporulation. In addition these CBS domains are associated with a downstream ACT (aspartate kinase/chorismate mutase/TyrA) domain, which is linked to a wide range of metabolic enzymes that are regulated by amino acid concentration. Pairs of ACT domains bind specifically to a particular amino acid leading to regulation of the linked enzyme. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 233 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpisGNALY-ILTHKRILKFLqlfMSDMPKPAFMKQNLDELGIgTYHNI- 310
Cdd:cd04584    8 KNVVTVTPDTSLAEARELMKEHKIRHLPVVD---DGKLVgIVTDRDLLRAS---PSKATSLSIYELNYLLSKI-PVKDIm 80

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|
gi 887242656 311 ----AFIHPDTPIIKALNIFVERRISALPVVDEsGKVVDIYSKFDVINLA 356
Cdd:cd04584   81 tkdvITVSPDDTVEEAALLMLENKIGCLPVVDG-GKLVGIITETDILRAF 129

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains present in bacteria; The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 308 HNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLD-ITVTQALQHrsqyfeGVVKCS 386
Cdd:cd04629    3 RNPVTLTPDTSILEAVELLLEHKISGAPVVDEQGRLVGFLSEQDCLKALLEASYHCEPgGTVADYMST------EVLTVS 76

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|.
gi 887242656 387 KLETLETIVDRIVRAEVHRLVVVnEADSIVGIISLSDILQA 427
Cdd:cd04629   77 PDTSIVDLAQLFLKNKPRRYPVV-EDGKLVGQISRRDVLRA 116

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains superfamily; The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 151 SSKLVVFDTTLQVKKAFFALVANGVRAAPLWESKKQsFVGMLTITDFINILHRYYKSPMVQIYELEEHKIETwrelylqe 230
Cdd:cd02205    1 TRDVVTVDPDTTVREALELMAENGIGALPVVDDDGK-LVGIVTERDILRALVEGGLALDTPVAEVMTPDVIT-------- 71

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|
gi 887242656 231 tfkplvnISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILK 280
Cdd:cd02205   72 -------VSPDTDLEEALELMLEHGIRRLPVVDD-DGKLVGIVTRRDILR 113

Predicted transcriptional regulator containing CBS domains [Transcription];

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 306 TYHNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLditVTQALQhrsqyfegVVKC 385
Cdd:COG4109   23 TLEDVATLSEDDTVEDALELLEKTGHSRFPVVDENGRLVGIVTSKDILGKDDDTPIEDV---MTKNPI--------TVTP 91

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|...
gi 887242656 386 SklETLETIVDRIVRAEVHRLVVVNEADSIVGIISLSDILQAL 428
Cdd:COG4109   92 D--TSLASAAHKMIWEGIELLPVVDDDGRLLGIISRQDVLKAL 132

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains found in archaea and associated with helix turn helix domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in the inosine 5' monophosphate dehydrogenase (IMPDH) protein. IMPDH is an essential enzyme that catalyzes the first step unique to GTP synthesis, playing a key role in the regulation of cell proliferation and differentiation. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 233 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRILKFLQLFMSDMPKPAFMKQNldelgigtyhnIAF 312
Cdd:cd04588    2 KDLITLKPDATIKDAAKLLSENNIHGAPVVD--DGKLVGIVTLTDIAKALAEGKENAKVKDIMTKD-----------VIT 68

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|...
gi 887242656 313 IHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINL 355
Cdd:cd04588   69 IDKDEKIYDAIRLMNKHNIGRLIVVDDNGKPVGIITRTDILKV 111

CBS pair domain found in Hypoxic Response Protein 1 (HRP1) -like proteinds; Mycobacterium tuberculosis adapts to cellular stresses by upregulation of the dormancy survival regulon. Hypoxic response protein 1 (HRP1) is encoded by one of the most strongly upregulated genes in the dormancy survival regulon. HRP1 is a 'CBS-domain-only protein; however unlike other CBS containing proteins it does not appear to bind AMP. The biological function of the protein remains unclear, but is thought to contribute to the modulation of the host immune response. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 308 HNIAFIHPDTPIIKALNIFVERRISALPVVDEsGKVV------DIyskfdVIN-LAAEKTYNnlDITVTQALQHrsqyfe 380
Cdd:cd04622    3 RDVVTVSPDTTLREAARLMRDLDIGALPVCEG-DRLVgmvtdrDI-----VVRaVAEGKDPN--TTTVREVMTG------ 68

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....
gi 887242656 381 GVVKCSKLETLETIVDRIVRAEVHRLVVVNEADSIVGIISLSDI 424
Cdd:cd04622   69 DVVTCSPDDDVEEAARLMAEHQVRRLPVVDDDGRLVGIVSLGDL 112

signal transduction protein with CBS domains; Archeal gamma-subunit of 5'-AMP-activated protein kinase (AMPK) contains four CBS domains in tandem repeats, similar to eukaryotic homologs. AMPK is an important regulator of metabolism and of energy homeostasis. It is a heterotrimeric protein composed of a catalytic serine/threonine kinase subunit (alpha) and two regulatory subunits (beta and gamma). The gamma subunit senses the intracellular energy status by competitively binding AMP and ATP and is believed to be responsible for allosteric regulation of the whole complex. In humans mutations in gamma- subunit of AMPK are associated with hypertrophic cardiomiopathy, Wolff-Parkinson-White syndrome and glycogen storage in the skeletal muscle. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 233 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDPISGNALYILTHKRILKFL-----QLFMSDMPKPAFMK---QNLDElgI 304
Cdd:cd17779    8 KDVITIPPTTTIIGAIKTMTEKGFRRLPVADAGTKRLEGIVTSMDIVDFLgggskYNLVEKKHNGNLLAainEPVRE--I 85

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|....*....
gi 887242656 305 GTyHNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVI 353
Cdd:cd17779   86 MT-RDVISVKENASIDDAIELMLEKNVGGLPIVDKDGKVIGIVTERDFL 133

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains present in bacteria and eukaryotes; The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 308 HNIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLDITVTQALQHRsqyfegVVKCSK 387
Cdd:cd04623    2 RDVVTVSPDATVAEALRLLAEKNIGALVVVDDGGRLVGILSERDYVRKLALRGASSLDTPVSEIMTRD------VVTCTP 75

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|.
gi 887242656 388 ----LETLETIVDRIVRaevHRLVVvnEADSIVGIISLSDI 424
Cdd:cd04623   76 ddtvEECMALMTERRIR---HLPVV--EDGKLVGIVSIGDV 111

Predicted transcriptional regulator, contains C-terminal CBS domains [Transcription];

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 151 SSKLVVFDTTLQVKKAFFALVANGVRAAPLWESKKqsFVGMLTITDFINILHRYYKSPMVQIYELEEhkietwrelylqe 230
Cdd:COG2524   93 TKDVITVSPDTTLEEALELMLEKGISGLPVVDDGK--LVGIITERDLLKALAEGRDLLDAPVSDIMT------------- 157

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|..
gi 887242656 231 tfKPLVNISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILKFL 282
Cdd:COG2524  158 --RDVVTVSEDDSLEEALRLMLEHGIGRLPVVDD-DGKLVGIITRTDILRAL 206

Domain in cystathionine beta-synthase and other proteins; Domain present in all 3 forms of cellular life. Present in two copies in inosine monophosphate dehydrogenase, of which one is disordered in the crystal structure. A number of disease states are associated with CBS-containing proteins including homocystinuria, Becker's and Thomsen disease.

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 887242656   382 VVKCSKLETLETIVDRIVRAEVHRLVVVNEADSIVGIISLSDILQALI 429
Cdd:smart00116   2 VVTVSPDTTLEEALELLRENGIRRLPVVDEEGRLVGIVTRRDIIKALA 49

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the BON (bacterial OsmY and nodulation domain) domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the BON (bacterial OsmY and nodulation domain) domain. BON is a putative phospholipid-binding domain found in a family of osmotic shock protection proteins. It is also found in some secretins and a group of potential haemolysins. Its likely function is attachment to phospholipid membranes. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 233 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNAL-------------YILTHKRILKFLQLFMSDMPKPAfmKQNL 299
Cdd:cd04586    3 TDVVTVTPDTSVREAARLLLEHRISGLPVVD--DDGKLvgivsegdllrreEPGTEPRRVWWLDALLESPERLA--EEYV 78

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*....
gi 887242656 300 DELG-----IGTyHNIAFIHPDTPIIKALNIFVERRISALPVVDEsGKVVDIYSKFDVI 353
Cdd:cd04586   79 KAHGrtvgdVMT-RPVVTVSPDTPLEEAARLMERHRIKRLPVVDD-GKLVGIVSRADLL 135

CBS pair domains found in archeal 5'-AMP-activated protein kinase gamma subunit-like proteins; Archeal gamma-subunit of 5'-AMP-activated protein kinase (AMPK) contains four CBS domains in tandem repeats, similar to eukaryotic homologs. AMPK is an important regulator of metabolism and of energy homeostasis. It is a heterotrimeric protein composed of a catalytic serine/threonine kinase subunit (alpha) and two regulatory subunits (beta and gamma). The gamma subunit senses the intracellular energy status by competitively binding AMP and ATP and is believed to be responsible for allosteric regulation of the whole complex. In humans mutations in gamma- subunit of AMPK are associated with hypertrophic cardiomiopathy, Wolff-Parkinson-White syndrome and glycogen storage in the skeletal muscle. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 236 VNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRILKFL---QLFMS----------DMPKPAFMKQNldel 302
Cdd:cd04631   11 ITATPGTPIEDVAKIMVRNGFRRLPVVS--DGKLVGIVTSTDIMRYLgsgEAFEKlktgnihevlNVPISSIMKRD---- 84

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|..
gi 887242656 303 gigtyhnIAFIHPDTPIIKALNIFVERRISALPVVDEsGKVVDIYSKFDVIN 354
Cdd:cd04631   85 -------IITTTPDTDLGEAAELMLEKNIGALPVVDD-GKLVGIITERDILR 128

CBS pair domains found in archeal proteins, repeat 1; CBS pair domains found in archeal proteins that contain 2 repeats. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 225 ELYLQETfKPLVNISPDASLFDAVYSLIKNKIHRLPVIDpisGNALY-ILTHKRILKFLQLFMSDMPKPAFMKQNLDELG 303
Cdd:cd17777    3 ELMIIAS-PPVLSISPSAPILSAFEKMNRRGIRRLVVVD---ENKLEgILSARDLVSYLGGGCLFKIVESRHQGDLYSAL 78

                         90       100       110       120       130
                 ....*....|....*....|....*....|....*....|....*....|....*.
gi 887242656 304 ----IGTYH--NIAFIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVI 353
Cdd:cd17777   79 nrevVETIMtpNPVYVYEDSDLIEALTIMVTRGIGSLPVVDRDGRPVGIVTERDLV 134

Domain in cystathionine beta-synthase and other proteins; Domain present in all 3 forms of cellular life. Present in two copies in inosine monophosphate dehydrogenase, of which one is disordered in the crystal structure. A number of disease states are associated with CBS-containing proteins including homocystinuria, Becker's and Thomsen disease.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 887242656   234 PLVNISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILKFLQ 283
Cdd:smart00116   1 DVVTVSPDTTLEEALELLRENGIRRLPVVDE-EGRLVGIVTRRDIIKALA 49

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in the inosine 5' monophosphate dehydrogenase (IMPDH) protein; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in the inosine 5' monophosphate dehydrogenase (IMPDH) protein. IMPDH is an essential enzyme that catalyzes the first step unique to GTP synthesis, playing a key role in the regulation of cell proliferation and differentiation. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 312 FIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAaektynNLDITVtqalqhrSQY---FEGVVKCSKL 388
Cdd:cd04601    6 TLSPDATVADVLELKAEYGISGVPVTEDGGKLVGIVTSRDIRFET------DLSTPV-------SEVmtpDERLVTAPEG 72

                         90       100       110
                 ....*....|....*....|....*....|....*..
gi 887242656 389 ETLETIVDRIVRAEVHRLVVVNEADSIVGIISLSDIL 425
Cdd:cd04601   73 ITLEEAKEILHKHKIEKLPIVDDNGELVGLITRKDIE 109

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the MET2 domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the MET2 domain. Met2 is a key enzyme in the biosynthesis of methionine. It encodes a homoserine transacetylase involved in converting homoserine to O-acetyl homoserine. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 233 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILKFLqlfmsdmpkpAFMKQNLDElgIGTyHNIAF 312
Cdd:cd04605    8 KDVATIREDISIEEAAKIMIDKNVTHLPVVSE-DGKLIGIVTSWDISKAV----------ALKKDSLEE--IMT-RNVIT 73

                         90       100       110
                 ....*....|....*....|....*....|....*.
gi 887242656 313 IHPDTPIIKALNIFVERRISALPVVDESGKVVDIYS 348
Cdd:cd04605   74 ARPDEPIELAARKMEKHNISALPVVDDDRRVIGIIT 109

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the DHH and nucleotidyltransferase (NT) domains; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with an upstream DHH domain which performs a phosphoesterase function and a downstream nucleotidyltransferase (NT) domain of family X DNA polymerases. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 313 IHPDTPIIKALNIFVERRISALPVVDEsGKVVDIYSKFDVinlaaektynnlDITVTQALQH---RSQYFEGVVKCSKLE 389
Cdd:cd04595    7 VSPDTTIEEARKIMLRYGHTGLPVVED-GKLVGIISRRDV------------DKAKHHGLGHapvKGYMSTNVITIDPDT 73

                         90       100       110
                 ....*....|....*....|....*....|....*...
gi 887242656 390 TLETIVDRIVRAEVHRLVVVNEaDSIVGIISLSDILQA 427
Cdd:cd04595   74 SLEEAQELMVEHDIGRLPVVEE-GKLVGIVTRSDVLRY 110

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the DHH and nucleotidyltransferase (NT) domains; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with an upstream DHH domain which performs a phosphoesterase function and a downstream nucleotidyltransferase (NT) domain of family X DNA polymerases. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 234 PLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRILKFLQLFMSDMPKPAFMKQNldelgigtyhnIAFI 313
Cdd:cd04595    3 PVKTVSPDTTIEEARKIMLRYGHTGLPVVE--DGKLVGIISRRDVDKAKHHGLGHAPVKGYMSTN-----------VITI 69

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|.
gi 887242656 314 HPDTPIIKALNIFVERRISALPVVDEsGKVVDIYSKFDVIN 354
Cdd:cd04595   70 DPDTSLEEAQELMVEHDIGRLPVVEE-GKLVGIVTRSDVLR 109

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the pyridoxal-phosphate (PALP) dependent enzyme domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the pyridoxal-phosphate (PALP) dependent enzyme domain upstream. Cystathionine beta-synthase (CBS ) contains, besides the C-terminal regulatory CBS-pair, an N-terminal heme-binding module, followed by a pyridoxal phosphate (PLP) domain, which houses the active site. It is the first enzyme in the transsulfuration pathway, catalyzing the conversion of serine and homocysteine to cystathionine and water. In general, CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 887242656 312 FIHPDTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVIN-LAAEKTynNLDITVTQALQHRsqyFEGVVKCSKLET 390
Cdd:cd04608   14 TVLPDDTLGEAIEIMREYGVDQLPVVDEDGRVVGMVTEGNLLSsLLAGRA--QPSDPVSKAMYKQ---FKQVDLDTPLGA 88

                         90       100       110
                 ....*....|....*....|....*....|....*
gi 887242656 391 LETIVDRivraeVHRLVVVNEADSIVGIISLSDIL 425
Cdd:cd04608   89 LSRILER-----DHFALVVDGQGKVLGIVTRIDLL 118