Glutamate 5-kinase [Vibrio coralliirubri]
Protein Classification
glutamate 5-kinase( domain architecture ID 11415724)
glutamate 5-kinase catalyzes glutamate-dependent ATP cleavage, and transfers the terminal phosphoryl group of ATP to the gamma-carboxyl group of glutamate, in the first and controlling step of proline (or ornithine) biosynthesis
List of domain hits
| Name | Accession | Description | Interval | E-value | ||||||
| ProB | COG0263 | Glutamate 5-kinase [Amino acid transport and metabolism]; Glutamate 5-kinase is part of the ... |
11-377 | 0e+00 | ||||||
Glutamate 5-kinase [Amino acid transport and metabolism]; Glutamate 5-kinase is part of the Pathway/BioSystem: Proline biosynthesis : Pssm-ID: 440033 [Multi-domain] Cd Length: 371 Bit Score: 526.53 E-value: 0e+00
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| Name | Accession | Description | Interval | E-value | ||||||
| ProB | COG0263 | Glutamate 5-kinase [Amino acid transport and metabolism]; Glutamate 5-kinase is part of the ... |
11-377 | 0e+00 | ||||||
Glutamate 5-kinase [Amino acid transport and metabolism]; Glutamate 5-kinase is part of the Pathway/BioSystem: Proline biosynthesis Pssm-ID: 440033 [Multi-domain] Cd Length: 371 Bit Score: 526.53 E-value: 0e+00
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| proB | TIGR01027 | glutamate 5-kinase; Bacterial ProB proteins hit the full length of this model, but the ... |
14-376 | 1.91e-168 | ||||||
glutamate 5-kinase; Bacterial ProB proteins hit the full length of this model, but the ProB-like domain of delta 1-pyrroline-5-carboxylate synthetase does not hit the C-terminal 100 residues of this model. The noise cutoff is set low enough to hit delta 1-pyrroline-5-carboxylate synthetase and other partial matches to this family. [Amino acid biosynthesis, Glutamate family] Pssm-ID: 162163 [Multi-domain] Cd Length: 363 Bit Score: 474.87 E-value: 1.91e-168
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| AAK_G5K_ProB | cd04242 | AAK_G5K_ProB: Glutamate-5-kinase (G5K) catalyzes glutamate-dependent ATP cleavage; G5K ... |
15-265 | 8.83e-118 | ||||||
AAK_G5K_ProB: Glutamate-5-kinase (G5K) catalyzes glutamate-dependent ATP cleavage; G5K transfers the terminal phosphoryl group of ATP to the gamma-carboxyl group of glutamate, in the first and controlling step of proline (and, in mammals, ornithine) biosynthesis. G5K is subject to feedback allosteric inhibition by proline or ornithine. In microorganisms and plants, proline plays an important role as an osmoprotectant and, in mammals, ornithine biosynthesis is crucial for proper ammonia detoxification, since a G5K mutation has been shown to cause human hyperammonaemia. Microbial G5K generally consists of two domains: a catalytic G5K domain and one PUA (pseudo uridine synthases and archaeosine-specific transglycosylases) domain, and some lack the PUA domain. G5K requires free Mg for activity, it is tetrameric, and it aggregates to higher forms in a proline-dependent way. G5K lacking the PUA domain remains tetrameric, active, and proline-inhibitable, but the Mg requirement and the proline-triggered aggregation are greatly diminished and abolished, respectively, and more proline is needed for inhibition. Although plant and animal G5Ks are part of a bifunctional polypeptide, delta 1-pyrroline-5-carboxylate synthetase (P5CS), composed of an N-terminal G5K (ProB) and a C-terminal glutamyl 5- phosphate reductase (G5PR; ProA); bacterial and yeast G5Ks are monofunctional single-polypeptide enzymes. In this CD, all three domain architectures are present: G5K, G5K+PUA, and G5K+G5PR. Pssm-ID: 239775 [Multi-domain] Cd Length: 251 Bit Score: 341.73 E-value: 8.83e-118
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| PRK12314 | PRK12314 | gamma-glutamyl kinase; Provisional |
14-266 | 4.81e-86 | ||||||
gamma-glutamyl kinase; Provisional Pssm-ID: 183430 [Multi-domain] Cd Length: 266 Bit Score: 261.71 E-value: 4.81e-86
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| AA_kinase | pfam00696 | Amino acid kinase family; This family includes kinases that phosphorylate a variety of amino ... |
14-243 | 6.15e-40 | ||||||
Amino acid kinase family; This family includes kinases that phosphorylate a variety of amino acid substrates, as well as uridylate kinase and carbamate kinase. This family includes: Aspartokinase EC:2.7.2.4. Acetylglutamate kinase EC:2.7.2.8. Glutamate 5-kinase EC:2.7.2.11. Uridylate kinase EC:2.7.4.-. Carbamate kinase EC:2.7.2.2. Pssm-ID: 395565 [Multi-domain] Cd Length: 232 Bit Score: 141.35 E-value: 6.15e-40
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| PUA | smart00359 | Putative RNA-binding Domain in PseudoUridine synthase and Archaeosine transglycosylase; |
288-351 | 1.09e-15 | ||||||
Putative RNA-binding Domain in PseudoUridine synthase and Archaeosine transglycosylase; Pssm-ID: 214635 [Multi-domain] Cd Length: 76 Bit Score: 71.13 E-value: 1.09e-15
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| Name | Accession | Description | Interval | E-value | ||||||
| ProB | COG0263 | Glutamate 5-kinase [Amino acid transport and metabolism]; Glutamate 5-kinase is part of the ... |
11-377 | 0e+00 | ||||||
Glutamate 5-kinase [Amino acid transport and metabolism]; Glutamate 5-kinase is part of the Pathway/BioSystem: Proline biosynthesis Pssm-ID: 440033 [Multi-domain] Cd Length: 371 Bit Score: 526.53 E-value: 0e+00
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| proB | TIGR01027 | glutamate 5-kinase; Bacterial ProB proteins hit the full length of this model, but the ... |
14-376 | 1.91e-168 | ||||||
glutamate 5-kinase; Bacterial ProB proteins hit the full length of this model, but the ProB-like domain of delta 1-pyrroline-5-carboxylate synthetase does not hit the C-terminal 100 residues of this model. The noise cutoff is set low enough to hit delta 1-pyrroline-5-carboxylate synthetase and other partial matches to this family. [Amino acid biosynthesis, Glutamate family] Pssm-ID: 162163 [Multi-domain] Cd Length: 363 Bit Score: 474.87 E-value: 1.91e-168
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| AAK_G5K_ProB | cd04242 | AAK_G5K_ProB: Glutamate-5-kinase (G5K) catalyzes glutamate-dependent ATP cleavage; G5K ... |
15-265 | 8.83e-118 | ||||||
AAK_G5K_ProB: Glutamate-5-kinase (G5K) catalyzes glutamate-dependent ATP cleavage; G5K transfers the terminal phosphoryl group of ATP to the gamma-carboxyl group of glutamate, in the first and controlling step of proline (and, in mammals, ornithine) biosynthesis. G5K is subject to feedback allosteric inhibition by proline or ornithine. In microorganisms and plants, proline plays an important role as an osmoprotectant and, in mammals, ornithine biosynthesis is crucial for proper ammonia detoxification, since a G5K mutation has been shown to cause human hyperammonaemia. Microbial G5K generally consists of two domains: a catalytic G5K domain and one PUA (pseudo uridine synthases and archaeosine-specific transglycosylases) domain, and some lack the PUA domain. G5K requires free Mg for activity, it is tetrameric, and it aggregates to higher forms in a proline-dependent way. G5K lacking the PUA domain remains tetrameric, active, and proline-inhibitable, but the Mg requirement and the proline-triggered aggregation are greatly diminished and abolished, respectively, and more proline is needed for inhibition. Although plant and animal G5Ks are part of a bifunctional polypeptide, delta 1-pyrroline-5-carboxylate synthetase (P5CS), composed of an N-terminal G5K (ProB) and a C-terminal glutamyl 5- phosphate reductase (G5PR; ProA); bacterial and yeast G5Ks are monofunctional single-polypeptide enzymes. In this CD, all three domain architectures are present: G5K, G5K+PUA, and G5K+G5PR. Pssm-ID: 239775 [Multi-domain] Cd Length: 251 Bit Score: 341.73 E-value: 8.83e-118
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| PRK12314 | PRK12314 | gamma-glutamyl kinase; Provisional |
14-266 | 4.81e-86 | ||||||
gamma-glutamyl kinase; Provisional Pssm-ID: 183430 [Multi-domain] Cd Length: 266 Bit Score: 261.71 E-value: 4.81e-86
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| PUA_G5K | cd21157 | PUA domain of gamma-glutamyl kinase, found in archaea, bacteria, and eukarya; Gamma glutamyl ... |
273-376 | 2.28e-48 | ||||||
PUA domain of gamma-glutamyl kinase, found in archaea, bacteria, and eukarya; Gamma glutamyl kinase (G5K) is an enzyme essential for the biosynthesis of L-proline; it catalyzes the transfer of a phosphate group to glutamate. The resulting glutamate 5-phosphate cyclizes spontaneously to form 5-oxoproline. The PUA (PseudoUridine synthase and Archaeosine transglycosylase) domain functions as an RNA binding domain in many other proteins; however, its role in G5K is not understood. It might play a role in modulating the enzymatic properties of bacterial G5Ks. Pssm-ID: 409299 [Multi-domain] Cd Length: 104 Bit Score: 159.17 E-value: 2.28e-48
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| AAK_P5CS_ProBA | cd04256 | AAK_P5CS_ProBA: Glutamate-5-kinase (G5K) domain of the bifunctional delta ... |
14-264 | 6.38e-48 | ||||||
AAK_P5CS_ProBA: Glutamate-5-kinase (G5K) domain of the bifunctional delta 1-pyrroline-5-carboxylate synthetase (P5CS), composed of an N-terminal G5K (ProB) and a C-terminal glutamyl 5- phosphate reductase (G5PR, ProA), the first and second enzyme catalyzing proline (and, in mammals, ornithine) biosynthesis. G5K transfers the terminal phosphoryl group of ATP to the gamma-carboxyl group of glutamate, and is subject to feedback allosteric inhibition by proline or ornithine. In plants, proline plays an important role as an osmoprotectant and, in mammals, ornithine biosynthesis is crucial for proper ammonia detoxification, since a G5K mutation has been shown to cause human hyperammonaemia. Pssm-ID: 239789 [Multi-domain] Cd Length: 284 Bit Score: 164.14 E-value: 6.38e-48
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| PLN02418 | PLN02418 | delta-1-pyrroline-5-carboxylate synthase |
14-264 | 5.87e-44 | ||||||
delta-1-pyrroline-5-carboxylate synthase Pssm-ID: 215230 Cd Length: 718 Bit Score: 161.82 E-value: 5.87e-44
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| AA_kinase | pfam00696 | Amino acid kinase family; This family includes kinases that phosphorylate a variety of amino ... |
14-243 | 6.15e-40 | ||||||
Amino acid kinase family; This family includes kinases that phosphorylate a variety of amino acid substrates, as well as uridylate kinase and carbamate kinase. This family includes: Aspartokinase EC:2.7.2.4. Acetylglutamate kinase EC:2.7.2.8. Glutamate 5-kinase EC:2.7.2.11. Uridylate kinase EC:2.7.4.-. Carbamate kinase EC:2.7.2.2. Pssm-ID: 395565 [Multi-domain] Cd Length: 232 Bit Score: 141.35 E-value: 6.15e-40
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| P5CS | TIGR01092 | delta l-pyrroline-5-carboxylate synthetase; This protein contains a glutamate 5-kinase (ProB, ... |
14-264 | 6.74e-38 | ||||||
delta l-pyrroline-5-carboxylate synthetase; This protein contains a glutamate 5-kinase (ProB, EC 2.7.2.11) region followed by a gamma-glutamyl phosphate reductase (ProA, EC 1.2.1.41) region. [Amino acid biosynthesis, Glutamate family] Pssm-ID: 130164 [Multi-domain] Cd Length: 715 Bit Score: 144.67 E-value: 6.74e-38
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| PTZ00489 | PTZ00489 | glutamate 5-kinase; Provisional |
14-266 | 3.61e-35 | ||||||
glutamate 5-kinase; Provisional Pssm-ID: 240438 [Multi-domain] Cd Length: 264 Bit Score: 129.75 E-value: 3.61e-35
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| AAK | cd02115 | Amino Acid Kinases (AAK) superfamily, catalytic domain; present in such enzymes like ... |
17-264 | 2.04e-27 | ||||||
Amino Acid Kinases (AAK) superfamily, catalytic domain; present in such enzymes like N-acetylglutamate kinase (NAGK), carbamate kinase (CK), aspartokinase (AK), glutamate-5-kinase (G5K) and UMP kinase (UMPK). The AAK superfamily includes kinases that phosphorylate a variety of amino acid substrates. These kinases catalyze the formation of phosphoric anhydrides, generally with a carboxylate, and use ATP as the source of the phosphoryl group; are involved in amino acid biosynthesis. Some of these kinases control the process via allosteric feed-back inhibition. Pssm-ID: 239033 [Multi-domain] Cd Length: 248 Bit Score: 108.68 E-value: 2.04e-27
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| PUA | pfam01472 | PUA domain; The PUA domain named after Pseudouridine synthase and Archaeosine transglycosylase, ... |
286-360 | 3.02e-20 | ||||||
PUA domain; The PUA domain named after Pseudouridine synthase and Archaeosine transglycosylase, was detected in archaeal and eukaryotic pseudouridine synthases, archaeal archaeosine synthases, a family of predicted ATPases that may be involved in RNA modification, a family of predicted archaeal and bacterial rRNA methylases. Additionally, the PUA domain was detected in a family of eukaryotic proteins that also contain a domain homologous to the translation initiation factor eIF1/SUI1; these proteins may comprise a novel type of translation factors. Unexpectedly, the PUA domain was detected also in bacterial and yeast glutamate kinases; this is compatible with the demonstrated role of these enzymes in the regulation of the expression of other genes. It is predicted that the PUA domain is an RNA binding domain. Pssm-ID: 426278 [Multi-domain] Cd Length: 74 Bit Score: 83.69 E-value: 3.02e-20
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| PUA | smart00359 | Putative RNA-binding Domain in PseudoUridine synthase and Archaeosine transglycosylase; |
288-351 | 1.09e-15 | ||||||
Putative RNA-binding Domain in PseudoUridine synthase and Archaeosine transglycosylase; Pssm-ID: 214635 [Multi-domain] Cd Length: 76 Bit Score: 71.13 E-value: 1.09e-15
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| PUA | cd07953 | PUA RNA binding domain; The PUA (PseudoUridine synthase and Archaeosine transglycosylase) ... |
288-347 | 2.06e-11 | ||||||
PUA RNA binding domain; The PUA (PseudoUridine synthase and Archaeosine transglycosylase) domain was detected in archaeal and eukaryotic pseudouridine synthases, archaeal archaeosine synthases, a family of predicted ATPases that may be involved in RNA modification, and a family of predicted archaeal and bacterial rRNA methylases. Additionally, the PUA domain was detected in a family of eukaryotic proteins that also contain a domain homologous to the translation initiation factor eIF1/SUI1; these proteins may comprise a novel type of translation factors. Unexpectedly, the PUA domain was also found in bacterial and yeast glutamate kinases; this is compatible with the demonstrated role of these enzymes in regulating the expression of other genes. It has been shown that the PUA domain acts as an RNA binding domain in at least some of the proteins involved in RNA metabolism. Pssm-ID: 409289 [Multi-domain] Cd Length: 73 Bit Score: 59.23 E-value: 2.06e-11
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| AAK_UMPK-like | cd04239 | AAK_UMPK-like: UMP kinase (UMPK)-like, the microbial/chloroplast uridine monophosphate kinase ... |
16-262 | 1.77e-09 | ||||||
AAK_UMPK-like: UMP kinase (UMPK)-like, the microbial/chloroplast uridine monophosphate kinase (uridylate kinase) enzyme that catalyzes UMP phosphorylation and plays a key role in pyrimidine nucleotide biosynthesis. Regulation of this process is via feed-back control and via gene repression of carbamoyl phosphate synthetase (the first enzyme of the pyrimidine biosynthesis pathway). The UMP kinases of E. coli (Ec) and Pyrococcus furiosus (Pf) are known to function as homohexamers, with GTP and UTP being allosteric effectors. Like other related enzymes (carbamate kinase, aspartokinase, and N-acetylglutamate kinase) the E. coli and most bacterial UMPKs have a conserved, N-terminal, lysine residue proposed to function in the catalysis of the phosphoryl group transfer, whereas most archaeal UMPKs appear to lack this residue and the Pyrococcus furiosus structure has an additional Mg ion bound to the ATP molecule which is proposed to function as the catalysis instead. Also included in this CD are the alpha and beta subunits of the Mo storage protein (MosA and MosB) characterized as an alpha4-beta4 octamer containing an ATP-dependent, polynuclear molybdenum-oxide cluster. These and related sequences in this CD are members of the Amino Acid Kinase Superfamily (AAK). Pssm-ID: 239772 [Multi-domain] Cd Length: 229 Bit Score: 57.55 E-value: 1.77e-09
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| Tma20 | COG2016 | Predicted ribosome-associated RNA-binding protein Tma20, contains PUA domain [Translation, ... |
288-347 | 5.03e-08 | ||||||
Predicted ribosome-associated RNA-binding protein Tma20, contains PUA domain [Translation, ribosomal structure and biogenesis]; Pssm-ID: 441619 [Multi-domain] Cd Length: 154 Bit Score: 51.71 E-value: 5.03e-08
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| AAK_FomA-like | cd04241 | AAK_FomA-like: This CD includes a fosfomycin biosynthetic gene product, FomA, and similar ... |
15-263 | 4.52e-07 | ||||||
AAK_FomA-like: This CD includes a fosfomycin biosynthetic gene product, FomA, and similar proteins found in a wide range of organisms. Together, the fomA and fomB genes in the fosfomycin biosynthetic gene cluster of Streptomyces wedmorensis confer high-level fosfomycin resistance. FomA and FomB proteins converted fosfomycin to fosfomycin monophosphate and fosfomycin diphosphate in the presence of ATP and a magnesium ion, indicating that FomA and FomB catalyzed phosphorylations of fosfomycin and fosfomycin monophosphate, respectively. FomA and related sequences in this CD are members of the Amino Acid Kinase Superfamily (AAK). Pssm-ID: 239774 [Multi-domain] Cd Length: 252 Bit Score: 50.72 E-value: 4.52e-07
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| AAK_UMPK-PyrH-Pf | cd04253 | AAK_UMPK-PyrH-Pf: UMP kinase (UMPK)-Pf, the mostly archaeal uridine monophosphate kinase ... |
159-262 | 5.05e-07 | ||||||
AAK_UMPK-PyrH-Pf: UMP kinase (UMPK)-Pf, the mostly archaeal uridine monophosphate kinase (uridylate kinase) enzymes that catalyze UMP phosphorylation and play a key role in pyrimidine nucleotide biosynthesis; regulation of this process is via feed-back control and via gene repression of carbamoyl phosphate synthetase (the first enzyme of the pyrimidine biosynthesis pathway). The UMP kinase of Pyrococcus furiosus (Pf) is known to function as a homohexamer, with GTP and UTP being allosteric effectors. Like other related enzymes (carbamate kinase, aspartokinase, and N-acetylglutamate kinase) the E. coli and most bacterial UMPKs have a conserved, N-terminal, lysine residue proposed to function in the catalysis of the phosphoryl group transfer, whereas most archaeal UMPKs (this CD) appear to lack this residue and the Pyrococcus furiosus structure has an additional Mg ion bound to the ATP molecule which is proposed to function as the catalysis instead. Members of this CD belong to the Amino Acid Kinase Superfamily (AAK). Pssm-ID: 239786 [Multi-domain] Cd Length: 221 Bit Score: 49.94 E-value: 5.05e-07
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| arCOG00985 | TIGR03684 | arCOG04150 universal archaeal PUA-domain protein; This universal archaeal protein contains a ... |
288-345 | 1.63e-06 | ||||||
arCOG04150 universal archaeal PUA-domain protein; This universal archaeal protein contains a domain possibly associated with RNA binding (pfam01472, TIGR00451). Pssm-ID: 274723 [Multi-domain] Cd Length: 150 Bit Score: 47.22 E-value: 1.63e-06
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| PUA_MJ1432-like | cd21154 | PUA RNA-binding domain of MJ1432, TA1423, PH0734, and similar proteins; The RNA-binding PUA ... |
288-360 | 3.35e-06 | ||||||
PUA RNA-binding domain of MJ1432, TA1423, PH0734, and similar proteins; The RNA-binding PUA (PseudoUridine synthase and Archaeosine transglycosylase) domain was detected in a number of proteins involved in RNA metabolism. Members of this mostly archaeal family have not been characterized functionally; they may bind to RNA. This family includes Pyrococcus horikoshii PH0734 where the N-terminal domain may modulate the binding target of the C-terminal PUA domain using its characteristic electropositive surface. Pssm-ID: 409296 [Multi-domain] Cd Length: 84 Bit Score: 44.80 E-value: 3.35e-06
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| asp_kinases | TIGR00657 | aspartate kinase; Aspartate kinase catalyzes a first step in the biosynthesis from Asp of Lys ... |
122-200 | 9.93e-06 | ||||||
aspartate kinase; Aspartate kinase catalyzes a first step in the biosynthesis from Asp of Lys (and its precursor diaminopimelate), Met, and Thr. In E. coli, a distinct isozyme is inhibited by each of the three amino acid products. The Met-sensitive (I) and Thr-sensitive (II) forms are bifunctional enzymes fused to homoserine dehydrogenases and form homotetramers, while the Lys-sensitive form (III) is a monofunctional homodimer.The Lys-sensitive enzyme of Bacillus subtilis resembles the E. coli form but is an alpha 2/beta 2 heterotetramer, where the beta subunit is translated from an in-phase alternative initiator at Met-246. This may be a feature of a number of closely related forms, including a paralog from B. subtilis. [Amino acid biosynthesis, Aspartate family] Pssm-ID: 273201 [Multi-domain] Cd Length: 441 Bit Score: 47.35 E-value: 9.93e-06
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| PUA_Cbf5 | cd21148 | PUA RNA-binding domain of the archaeal pseudouridine synthase component Cbf5; The RNA-binding ... |
288-347 | 4.42e-05 | ||||||
PUA RNA-binding domain of the archaeal pseudouridine synthase component Cbf5; The RNA-binding PUA (PseudoUridine synthase and Archaeosine transglycosylase) domain was detected in a number of proteins involved in RNA metabolism. Members of the archaeal and eukaryotic subfamily of pseudouridine synthases, including Cbf5 (dyskerin in humans) and similar proteins, are modules that assist in the binding and positioning (guide and/or substrate) of RNA to the pseudouridine synthase complex. Pseudouridine synthases are enzymes that are responsible for post-translational modifications of RNAs by specifically isomerizing uracil residues. In Pyrococcus furiosus H/ACA ribonucleoprotein (RNP) assembly with a single-hairpin H/ACA RNA, the lower stem and the ACA motif of the guide RNA are anchored at the PUA domain of Cbf5. In addition, the N-terminal extension of Cbf5, which is a hot spot for dyskeratosis congenita (a rare genetic form of bone marrow failure) mutation, forms an extra structural layer on the PUA domain. Pssm-ID: 409290 [Multi-domain] Cd Length: 75 Bit Score: 41.30 E-value: 4.42e-05
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| PRK14560 | PRK14560 | putative RNA-binding protein; Provisional |
288-345 | 4.97e-05 | ||||||
putative RNA-binding protein; Provisional Pssm-ID: 237757 [Multi-domain] Cd Length: 160 Bit Score: 43.30 E-value: 4.97e-05
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| PRK04270 | PRK04270 | RNA-guided pseudouridylation complex pseudouridine synthase subunit Cbf5; |
264-347 | 5.99e-05 | ||||||
RNA-guided pseudouridylation complex pseudouridine synthase subunit Cbf5; Pssm-ID: 179806 [Multi-domain] Cd Length: 300 Bit Score: 44.46 E-value: 5.99e-05
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| PRK13795 | PRK13795 | hypothetical protein; Provisional |
239-347 | 2.47e-04 | ||||||
hypothetical protein; Provisional Pssm-ID: 237510 [Multi-domain] Cd Length: 636 Bit Score: 43.06 E-value: 2.47e-04
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| AAK_AK | cd04234 | AAK_AK: Amino Acid Kinase Superfamily (AAK), Aspartokinase (AK); this CD includes the ... |
98-200 | 2.65e-04 | ||||||
AAK_AK: Amino Acid Kinase Superfamily (AAK), Aspartokinase (AK); this CD includes the N-terminal catalytic domain of aspartokinase (4-L-aspartate-4-phosphotransferase;). AK is the first enzyme in the biosynthetic pathway of the aspartate family of amino acids (lysine, threonine, methionine, and isoleucine) and the bacterial cell wall component, meso-diaminopimelate. It also catalyzes the conversion of aspartate and ATP to aspartylphosphate and ADP. One mechanism for the regulation of this pathway is by the production of several isoenzymes of aspartokinase with different repressors and allosteric inhibitors. Pairs of ACT domains are proposed to specifically bind amino acids leading to allosteric regulation of the enzyme. In Escherichia coli, three different aspartokinase isoenzymes are regulated specifically by lysine, methionine, and threonine. AK-HSDHI (ThrA) and AK-HSDHII (MetL) are bifunctional enzymes that consist of an N-terminal AK and a C-terminal homoserine dehydrogenase (HSDH). ThrA and MetL are involved in threonine and methionine biosynthesis, respectively. The third isoenzyme, AKIII (LysC), is monofunctional and is involved in lysine synthesis. The three Bacillus subtilis isoenzymes, AKI (DapG), AKII (LysC), and AKIII (YclM), are feedback-inhibited by meso-diaminopimelate, lysine, and lysine plus threonine, respectively. The E. coli lysine-sensitive AK is described as a homodimer, whereas, the B. subtilis lysine-sensitive AK is described as a heterodimeric complex of alpha- and beta- subunits that are formed from two in-frame overlapping genes. A single AK enzyme type has been described in Pseudomonas, Amycolatopsis, and Corynebacterium. The fungal aspartate pathway is regulated at the AK step, with L-Thr being an allosteric inhibitor of the Saccharomyces cerevisiae AK (Hom3). At least two distinct AK isoenzymes can occur in higher plants, one is a monofunctional lysine-sensitive isoenzyme, which is involved in the overall regulation of the pathway and can be synergistically inhibited by S-adenosylmethionine. The other isoenzyme is a bifunctional, threonine-sensitive AK-HSDH protein. Also included in this CD is the catalytic domain of the Methylomicrobium alcaliphilum ectoine AK, the first enzyme of the ectoine biosynthetic pathway, found in this bacterium, and several other halophilic/halotolerant bacteria. Pssm-ID: 239767 [Multi-domain] Cd Length: 227 Bit Score: 42.08 E-value: 2.65e-04
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| PRK06291 | PRK06291 | aspartate kinase; Provisional |
124-200 | 5.60e-04 | ||||||
aspartate kinase; Provisional Pssm-ID: 235773 [Multi-domain] Cd Length: 465 Bit Score: 41.84 E-value: 5.60e-04
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| PRK14058 | PRK14058 | [LysW]-aminoadipate/[LysW]-glutamate kinase; |
128-266 | 2.08e-03 | ||||||
[LysW]-aminoadipate/[LysW]-glutamate kinase; Pssm-ID: 237599 [Multi-domain] Cd Length: 268 Bit Score: 39.50 E-value: 2.08e-03
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| AAK_AK-HSDH-like | cd04243 | AAK_AK-HSDH-like: Amino Acid Kinase Superfamily (AAK), AK-HSDH-like; this family includes the ... |
163-200 | 2.16e-03 | ||||||
AAK_AK-HSDH-like: Amino Acid Kinase Superfamily (AAK), AK-HSDH-like; this family includes the N-terminal catalytic domain of aspartokinase (AK) of the bifunctional enzyme AK- homoserine dehydrogenase (HSDH). These aspartokinases are found in such bacteria as E. coli (AKI-HSDHI, ThrA and AKII-HSDHII, MetL) and in higher plants (Z. mays AK-HSDH). AK and HSDH are the first and third enzymes in the biosynthetic pathway of the aspartate family of amino acids. AK catalyzes the phosphorylation of Asp to P-aspartyl phosphate. HSDH catalyzes the NADPH-dependent conversion of Asp 3-semialdehyde to homoserine. ThrA and MetL are involved in threonine and methionine biosynthesis, respectively. In E. coli, ThrA is subject to allosteric regulation by the end product L-threonine and the native enzyme is reported to be tetrameric. As with bacteria, plant AK and HSDH are feedback inhibited by pathway end products. Maize AK-HSDH is a Thr-sensitive 180-kD enzyme. Arabidopsis AK-HSDH is an alanine-activated, threonine-sensitive enzyme whose ACT domains, located C-terminal to the AK catalytic domain, were shown to be involved in allosteric activation. Also included in this CD is the catalytic domain of the aspartokinase (AK) of the lysine-sensitive aspartokinase isoenzyme AKIII, a monofunctional class enzyme (LysC) found in some bacteria such as E. coli. In E. coli, LysC is reported to be a homodimer of 50 kD subunits. Also included in this CD is the catalytic domain of aspartokinase (AK) of the bifunctional enzyme AK - DAP decarboxylase (DapDC) found in some bacteria. DapDC, which is the lysA gene product, catalyzes the decarboxylation of DAP to lysine. Pssm-ID: 239776 [Multi-domain] Cd Length: 293 Bit Score: 39.46 E-value: 2.16e-03
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| AAK_UMPK-MosAB | cd04255 | AAK_UMPK-MosAB: This CD includes the alpha and beta subunits of the Mo storage protein (MosA ... |
170-209 | 2.51e-03 | ||||||
AAK_UMPK-MosAB: This CD includes the alpha and beta subunits of the Mo storage protein (MosA and MosB) which are related to uridine monophosphate kinase (UMPK) enzymes that catalyze the phosphorylation of UMP by ATP, yielding UDP, and playing a key role in pyrimidine nucleotide biosynthesis. The Mo storage protein from the nitrogen-fixing bacterium, Azotobacter vinelandii, is characterized as an alpha4-beta4 octamer containing a polynuclear molybdenum-oxide cluster which is ATP-dependent to bind Mo and pH-dependent to release Mo. These and related bacterial sequences in this CD are members of the Amino Acid Kinase Superfamily (AAK). Pssm-ID: 239788 [Multi-domain] Cd Length: 262 Bit Score: 39.30 E-value: 2.51e-03
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| AAK_AKi-DapG-BS | cd04260 | AAK_AKi-DapG-BS: Amino Acid Kinase Superfamily (AAK), AKi-DapG; this CD includes the ... |
27-200 | 3.50e-03 | ||||||
AAK_AKi-DapG-BS: Amino Acid Kinase Superfamily (AAK), AKi-DapG; this CD includes the N-terminal catalytic aspartokinase (AK) domain of the diaminopimelate-sensitive aspartokinase isoenzyme AKI (DapG), a monofunctional class enzyme found in Bacilli (Bacillus subtilis 168), Clostridia, and Actinobacteria bacterial species. In Bacillus subtilis, the regulation of the diaminopimelate-lysine biosynthetic pathway involves dual control by diaminopimelate and lysine, effected through separate diaminopimelate- and lysine-sensitive aspartokinase isoenzymes. AKI activity is invariant during the exponential and stationary phases of growth and is not altered by addition of amino acids to the growth medium. The role of this isoenzyme is most likely to provide a constant level of aspartyl-beta-phosphate for the biosynthesis of diaminopimelate for peptidoglycan synthesis and dipicolinate during sporulation. The B. subtilis AKI is tetrameric consisting of two alpha and two beta subunits; the alpha (43 kD) and beta (17 kD) subunit formed by two in-phase overlapping genes. The alpha subunit contains the AK catalytic domain and two ACT domains. The beta subunit contains two ACT domains. Pssm-ID: 239793 [Multi-domain] Cd Length: 244 Bit Score: 38.52 E-value: 3.50e-03
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| PRK13794 | PRK13794 | hypothetical protein; Provisional |
271-344 | 3.51e-03 | ||||||
hypothetical protein; Provisional Pssm-ID: 237509 [Multi-domain] Cd Length: 479 Bit Score: 39.27 E-value: 3.51e-03
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| AAK_UMPK-PyrH-Ec | cd04254 | UMP kinase (UMPK)-Ec, the microbial/chloroplast uridine monophosphate kinase (uridylate kinase) ... |
159-209 | 3.51e-03 | ||||||
UMP kinase (UMPK)-Ec, the microbial/chloroplast uridine monophosphate kinase (uridylate kinase) enzyme that catalyzes UMP phosphorylation and plays a key role in pyrimidine nucleotide biosynthesis; regulation of this process is via feed-back control and via gene repression of carbamoyl phosphate synthetase (the first enzyme of the pyrimidine biosynthesis pathway). The UMP kinase of E. coli (Ec) is known to function as a homohexamer, with GTP and UTP being allosteric effectors. Like other related enzymes (carbamate kinase, aspartokinase, and N-acetylglutamate kinase) the E. coli and most bacterial and chloroplast UMPKs (this CD) have a conserved, N-terminal, lysine residue proposed to function in the catalysis of the phosphoryl group transfer, whereas most archaeal UMPKs appear to lack this residue and the Pyrococcus furiosus structure has an additional Mg ion bound to the ATP molecule which is proposed to function as the catalysis instead. Members of this CD belong to the Amino Acid Kinase Superfamily (AAK). Pssm-ID: 239787 [Multi-domain] Cd Length: 231 Bit Score: 38.63 E-value: 3.51e-03
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| PRK12353 | PRK12353 | putative amino acid kinase; Reviewed |
128-179 | 4.42e-03 | ||||||
putative amino acid kinase; Reviewed Pssm-ID: 237071 Cd Length: 314 Bit Score: 38.60 E-value: 4.42e-03
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| MetL1 | COG0527 | Aspartate kinase [Amino acid transport and metabolism]; Aspartate kinase is part of the ... |
16-200 | 5.99e-03 | ||||||
Aspartate kinase [Amino acid transport and metabolism]; Aspartate kinase is part of the Pathway/BioSystem: Lysine biosynthesis Pssm-ID: 440293 [Multi-domain] Cd Length: 407 Bit Score: 38.52 E-value: 5.99e-03
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| AAK_AK-DapDC | cd04259 | AAK_AK-DapDC: Amino Acid Kinase Superfamily (AAK), AK-DapDC; this CD includes the N-terminal ... |
156-198 | 6.76e-03 | ||||||
AAK_AK-DapDC: Amino Acid Kinase Superfamily (AAK), AK-DapDC; this CD includes the N-terminal catalytic aspartokinase (AK) domain of the bifunctional enzyme AK - DAP decarboxylase (DapDC) found in some bacteria. Aspartokinase is the first enzyme in the aspartate metabolic pathway, catalyzes the conversion of aspartate and ATP to aspartylphosphate and ADP. DapDC, which is the lysA gene product, catalyzes the decarboxylation of DAP to lysine. Pssm-ID: 239792 [Multi-domain] Cd Length: 295 Bit Score: 37.90 E-value: 6.76e-03
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| PRK08961 | PRK08961 | bifunctional aspartate kinase/diaminopimelate decarboxylase; |
156-198 | 7.60e-03 | ||||||
bifunctional aspartate kinase/diaminopimelate decarboxylase; Pssm-ID: 236358 [Multi-domain] Cd Length: 861 Bit Score: 38.52 E-value: 7.60e-03
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| AAK_AK-Hom3 | cd04247 | AAK_AK-Hom3: Amino Acid Kinase Superfamily (AAK), AK-Hom3; this CD includes the N-terminal ... |
151-197 | 9.16e-03 | ||||||
AAK_AK-Hom3: Amino Acid Kinase Superfamily (AAK), AK-Hom3; this CD includes the N-terminal catalytic domain of the aspartokinase HOM3, a monofunctional class enzyme found in Saccharomyces cerevisiae and other related AK domains. Aspartokinase, the first enzyme in the aspartate metabolic pathway, catalyzes the conversion of aspartate and ATP to aspartylphosphate and ADP, and in fungi, is responsible for the production of threonine, isoleucine and methionine. S. cerevisiae has a single aspartokinase isoenzyme type, which is regulated by feedback, allosteric inhibition by L-threonine. Recent studies show that the allosteric transition triggered by binding of threonine to AK involves a large change in the conformation of the native hexameric enzyme that is converted to an inactive one of different shape and substantially smaller hydrodynamic size. Pssm-ID: 239780 [Multi-domain] Cd Length: 306 Bit Score: 37.80 E-value: 9.16e-03
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