KRAB box; The KRAB domain (or Kruppel-associated box) is present in about a third of zinc finger proteins containing C2H2 fingers. The KRAB domain is found to be involved in protein-protein interactions. The KRAB domain is generally encoded by two exons. The regions coded by the two exons are known as KRAB-A and KRAB-B. The A box plays an important role in repression by binding to corepressors, while the B box is thought to enhance this repression brought about by the A box. KRAB-containing proteins are thought to have critical functions in cell proliferation and differentiation, apoptosis and neoplastic transformation.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 33504487    51 LVTFEDVAVYFIWREWKRLEPAQRDLYRDVMLENYGNVFSLD 92
Cdd:pfam01352   1 SVTFEDVAVDFTQEEWALLDPAQRNLYRDVMLENYRNLVSLG 42

KRAB box; The KRAB domain (or Kruppel-associated box) is present in about a third of zinc finger proteins containing C2H2 fingers. The KRAB domain is found to be involved in protein-protein interactions. The KRAB domain is generally encoded by two exons. The regions coded by the two exons are known as KRAB-A and KRAB-B. The A box plays an important role in repression by binding to corepressors, while the B box is thought to enhance this repression brought about by the A box. KRAB-containing proteins are thought to have critical functions in cell proliferation and differentiation, apoptosis and neoplastic transformation.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 33504487    51 LVTFEDVAVYFIWREWKRLEPAQRDLYRDVMLENYGNVFSLD 92
Cdd:pfam01352   1 SVTFEDVAVDFTQEEWALLDPAQRNLYRDVMLENYRNLVSLG 42

KRAB (Kruppel-associated box) domain -A box; The KRAB domain is a transcription repression module, found in a subgroup of the zinc finger proteins (ZFPs) of the C2H2 family, KRAB-ZFPs. KRAB-ZFPs comprise the largest group of transcriptional regulators in mammals, and are only found in tetrapods. These proteins have been shown to play important roles in cell differentiation and organ development, and in regulating viral replication and transcription. A KRAB domain may consist of an A-box, or of an A-box plus either a B-box, a divergent B-box (b), or a C-box. Only the A-box is included in this model. The A-box is needed for repression, the B- and C- boxes are not. KRAB-ZFPs have one or two KRAB domains at their amino-terminal end, and multiple C2H2 zinc finger motifs at their C-termini. Some KRAB-ZFPs also contain a SCAN domain which mediates homo- and hetero-oligomerization. The KRAB domain is a protein-protein interaction module which represses transcription through recruiting corepressors. A key mechanism appears to be the following: KRAB-AFPs tethered to DNA recruit, via their KRAB domain, the repressor KAP1 (KRAB-associated protein-1, also known as transcription intermediary factor 1 beta , KRAB-A interacting protein , and tripartite motif protein 28). The KAP1/ KRAB-AFP complex in turn recruits the heterochromatin protein 1 (HP1) family, and other chromatin modulating proteins, leading to transcriptional repression through heterochromatin formation.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|
gi 33504487  52 VTFEDVAVYFIWREWKRLEPAQRDLYRDVMLENYGNVFSL 91
Cdd:cd07765   1 VTFEDVAVYFSQEEWELLDPAQRDLYRDVMLENYENLVSL 40

Zinc-finger double domain;

                          10        20
                  ....*....|....*....|....*.
gi 33504487   215 DLIQHQRIHTGEKPYECSECGKAFSQ 240
Cdd:pfam13465   1 NLKRHMRTHTGEKPYKCPECGKSFKS 26

KRAB box; The KRAB domain (or Kruppel-associated box) is present in about a third of zinc finger proteins containing C2H2 fingers. The KRAB domain is found to be involved in protein-protein interactions. The KRAB domain is generally encoded by two exons. The regions coded by the two exons are known as KRAB-A and KRAB-B. The A box plays an important role in repression by binding to corepressors, while the B box is thought to enhance this repression brought about by the A box. KRAB-containing proteins are thought to have critical functions in cell proliferation and differentiation, apoptosis and neoplastic transformation.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 33504487    51 LVTFEDVAVYFIWREWKRLEPAQRDLYRDVMLENYGNVFSLD 92
Cdd:pfam01352   1 SVTFEDVAVDFTQEEWALLDPAQRNLYRDVMLENYRNLVSLG 42

KRAB (Kruppel-associated box) domain -A box; The KRAB domain is a transcription repression module, found in a subgroup of the zinc finger proteins (ZFPs) of the C2H2 family, KRAB-ZFPs. KRAB-ZFPs comprise the largest group of transcriptional regulators in mammals, and are only found in tetrapods. These proteins have been shown to play important roles in cell differentiation and organ development, and in regulating viral replication and transcription. A KRAB domain may consist of an A-box, or of an A-box plus either a B-box, a divergent B-box (b), or a C-box. Only the A-box is included in this model. The A-box is needed for repression, the B- and C- boxes are not. KRAB-ZFPs have one or two KRAB domains at their amino-terminal end, and multiple C2H2 zinc finger motifs at their C-termini. Some KRAB-ZFPs also contain a SCAN domain which mediates homo- and hetero-oligomerization. The KRAB domain is a protein-protein interaction module which represses transcription through recruiting corepressors. A key mechanism appears to be the following: KRAB-AFPs tethered to DNA recruit, via their KRAB domain, the repressor KAP1 (KRAB-associated protein-1, also known as transcription intermediary factor 1 beta , KRAB-A interacting protein , and tripartite motif protein 28). The KAP1/ KRAB-AFP complex in turn recruits the heterochromatin protein 1 (HP1) family, and other chromatin modulating proteins, leading to transcriptional repression through heterochromatin formation.

                        10        20        30        40
                ....*....|....*....|....*....|....*....|
gi 33504487  52 VTFEDVAVYFIWREWKRLEPAQRDLYRDVMLENYGNVFSL 91
Cdd:cd07765   1 VTFEDVAVYFSQEEWELLDPAQRDLYRDVMLENYENLVSL 40

FOG: Zn-finger [General function prediction only];

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33504487 180 NSFTVNSKLISHQRLQMGDKPHkcdeCSKSFNRTSDLIQHQRIHTGEKPYECSECGKAFSQSaHLIQHQRIHTGEKPYEC 259
Cdd:COG5048 155 NSSSVNTPQSNSLHPPLPANSL----SKDPSSNLSLLISSNVSTSIPSSSENSPLSSSYSIP-SSSSDQNLENSSSSLPL 229

                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33504487 260 KDCGKTFSCSSALILHQRIHTGEKPYECNECG------KTFSWSSTLTHHQRIHTG-EKPYACNECGKAFSRSSTLIHHQ 332
Cdd:COG5048 230 TTNSQLSPKSLLSQSPSSLSSSDSSSSASESPrsslptASSQSSSPNESDSSSEKGfSLPIKSKQCNISFSRSSPLTRHL 309

                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33504487 333 R--IHTGE--KPYECNE--CGKAFSQSSHLYQHQRIHTGEKPYECMECGGKFTYSSGL-------IQHQRIHTGENPYEC 399
Cdd:COG5048 310 RsvNHSGEslKPFSCPYslCGKLFSRNDALKRHILLHTSISPAKEKLLNSSSKFSPLLnneppqsLQQYKDLKNDKKSET 389

                .
gi 33504487 400 S 400
Cdd:COG5048 390 L 390

FOG: Zn-finger [General function prediction only];

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33504487 227 KPYECSECGKAFSQSAHLIQHQRIHTGEKPYECKD--CGKTFSCSSALILHQRIHTGEKPYECN-ECGKTFSWSSTLTHH 303
Cdd:COG5048  32 RPDSCPNCTDSFSRLEHLTRHIRSHTGEKPSQCSYsgCDKSFSRPLELSRHLRTHHNNPSDLNSkSLPLSNSKASSSSLS 111

                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33504487 304 QRIHTGEKPYACNECGKAFSRSSTLIH--HQRIHTGEKPYE-CNECGKAFSQSSHLYQHQRIHtgekpyecMECGGKFTY 380
Cdd:COG5048 112 SSSSNSNDNNLLSSHSLPPSSRDPQLPdlLSISNLRNNPLPgNNSSSVNTPQSNSLHPPLPAN--------SLSKDPSSN 183

                       170       180       190       200       210
                ....*....|....*....|....*....|....*....|....*....|....*....
gi 33504487 381 SSGLIQHQRIHTGENPYECSECGKAFRYSSALVRHQRIH--TGEKPLTVMGVKQKLSQS 437
Cdd:COG5048 184 LSLLISSNVSTSIPSSSENSPLSSSYSIPSSSSDQNLENssSSLPLTTNSQLSPKSLLS 242

Zinc-finger double domain;

                          10        20
                  ....*....|....*....|....*.
gi 33504487   243 HLIQHQRIHTGEKPYECKDCGKTFSC 268
Cdd:pfam13465   1 NLKRHMRTHTGEKPYKCPECGKSFKS 26

FOG: Zn-finger [General function prediction only];

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33504487 171 RNKKYSEFGNSFTVNSKLISHQRLQMGDKPHKC--DECSKSFNRTSDLIQHQRIHTGEKPYECS---------------- 232
Cdd:COG5048  32 RPDSCPNCTDSFSRLEHLTRHIRSHTGEKPSQCsySGCDKSFSRPLELSRHLRTHHNNPSDLNSkslplsnskassssls 111

                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33504487 233 -----------ECGKAFSQSAHLIQHQRIHTGEKPYECKDCGKTFSCS------------------------SALILHQR 277
Cdd:COG5048 112 ssssnsndnnlLSSHSLPPSSRDPQLPDLLSISNLRNNPLPGNNSSSVntpqsnslhpplpanslskdpssnLSLLISSN 191

                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 33504487 278 IHTGEKPYECNECGKTFSWSSTLTHHQRIHTGEKPYACNECGKAFSRS------STLIHHQRIHTGEKPYECNECGKAFS 351
Cdd:COG5048 192 VSTSIPSSSENSPLSSSYSIPSSSSDQNLENSSSSLPLTTNSQLSPKSllsqspSSLSSSDSSSSASESPRSSLPTASSQ 271

                       250       260       270       280       290       300       310
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 33504487 352 QSSHLYQHQRIHTG-EKPYECMECGGKFTYSSGLIQHQR--IHTGEN--PYECSE--CGKAFRYSSALVRHQRIHTG 421
Cdd:COG5048 272 SSSPNESDSSSEKGfSLPIKSKQCNISFSRSSPLTRHLRsvNHSGESlkPFSCPYslCGKLFSRNDALKRHILLHTS 348

Zinc-finger double domain;

                          10        20
                  ....*....|....*....|....*
gi 33504487   271 ALILHQRIHTGEKPYECNECGKTFS 295
Cdd:pfam13465   1 NLKRHMRTHTGEKPYKCPECGKSFK 25

Zinc-finger double domain;

                          10        20
                  ....*....|....*....|....*
gi 33504487   384 LIQHQRIHTGENPYECSECGKAFRY 408
Cdd:pfam13465   2 LKRHMRTHTGEKPYKCPECGKSFKS 26

Zinc finger, C2H2 type; The C2H2 zinc finger is the classical zinc finger domain. The two conserved cysteines and histidines co-ordinate a zinc ion. The following pattern describes the zinc finger. #-X-C-X(1-5)-C-X3-#-X5-#-X2-H-X(3-6)-[H/C] Where X can be any amino acid, and numbers in brackets indicate the number of residues. The positions marked # are those that are important for the stable fold of the zinc finger. The final position can be either his or cys. The C2H2 zinc finger is composed of two short beta strands followed by an alpha helix. The amino terminal part of the helix binds the major groove in DNA binding zinc fingers. The accepted consensus binding sequence for Sp1 is usually defined by the asymmetric hexanucleotide core GGGCGG but this sequence does not include, among others, the GAG (=CTC) repeat that constitutes a high-affinity site for Sp1 binding to the wt1 promoter.

                          10        20
                  ....*....|....*....|...
gi 33504487   313 YACNECGKAFSRSSTLIHHQRIH 335
Cdd:pfam00096   1 YKCPDCGKSFSRKSNLKRHLRTH 23

Zinc finger, C2H2 type; The C2H2 zinc finger is the classical zinc finger domain. The two conserved cysteines and histidines co-ordinate a zinc ion. The following pattern describes the zinc finger. #-X-C-X(1-5)-C-X3-#-X5-#-X2-H-X(3-6)-[H/C] Where X can be any amino acid, and numbers in brackets indicate the number of residues. The positions marked # are those that are important for the stable fold of the zinc finger. The final position can be either his or cys. The C2H2 zinc finger is composed of two short beta strands followed by an alpha helix. The amino terminal part of the helix binds the major groove in DNA binding zinc fingers. The accepted consensus binding sequence for Sp1 is usually defined by the asymmetric hexanucleotide core GGGCGG but this sequence does not include, among others, the GAG (=CTC) repeat that constitutes a high-affinity site for Sp1 binding to the wt1 promoter.

                          10        20
                  ....*....|....*....|...
gi 33504487   397 YECSECGKAFRYSSALVRHQRIH 419
Cdd:pfam00096   1 YKCPDCGKSFSRKSNLKRHLRTH 23

N-terminal domain of Oryza sativa transcription factor SUPPRESSOR OF FRI 4 (OsSUF4), Arabidopsis thaliana SUF4 (AtSUF4), and similar proteins; Oryza sativa SUPPRESSOR OF FRI 4 (OsSUF4) is a C2H2-type zinc finger transcription factor which interacts with the major H3K36 methyltransferase SDG725 to promote H3K36me3 (tri-methylation at H3K9) establishment. The transcription factor OsSUF4 recognizes a specific 7-bp DNA element (5'-CGGAAAT-3'), which is contained in the promoter regions of many genes throughout the rice genome. Through interaction with OsSUF4, SDG725 is recruited to the promoters of key florigen genes, RICE FLOWERING LOCUS T1 (RFT1) and Heading date 3a (Hd3a), for H3K36 deposition to promote gene activation and rice plant flowering. OsSUF4 target genes include a number of genes involved in many biological processes. Flowering plant Arabidopsis SUF4 binds to a 15bp DNA element (5'-CCAAATTTTAAGTTT-3') within the promoter of the floral repressor gene FLOWERING LOCUS C (FLC) and recruits the FRI-C transcription activator complex to the FLC promoter. Although the DNA-binding element and target genes of AtSUF4 are different from those of OsSUF4, AtSUF4 is known to interact with the Arabidopsis H3K36 methyltransferase SDG8 (also known as ASHH2/EFS/SET8), and the methylation deposition mechanism mediated by the SUF4 transcription factor and H3K36 methyltransferase may be conserved in Arabidopsis and rice. Proteins in this family have two conserved C2H2-type zinc finger motifs at the N-terminus (included in this model), and a large proline-rich domain at the C-terminus; for OsSUF4, it has been shown that the N-terminal zinc-finger domain is responsible for DNA binding, and that the C-terminal domain interacts with SDG725.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....
gi 33504487 255 KPYeCKDCGKTFSCSSALILHQRIHTgekpYECNECGKTFSWSSTLTHH-QRIH 307
Cdd:cd20908   1 KPW-CYYCDREFDDEKILIQHQKAKH----FKCHICHKKLYTAGGLAVHcLQVH 49

Zinc finger, C2H2 type; The C2H2 zinc finger is the classical zinc finger domain. The two conserved cysteines and histidines co-ordinate a zinc ion. The following pattern describes the zinc finger. #-X-C-X(1-5)-C-X3-#-X5-#-X2-H-X(3-6)-[H/C] Where X can be any amino acid, and numbers in brackets indicate the number of residues. The positions marked # are those that are important for the stable fold of the zinc finger. The final position can be either his or cys. The C2H2 zinc finger is composed of two short beta strands followed by an alpha helix. The amino terminal part of the helix binds the major groove in DNA binding zinc fingers. The accepted consensus binding sequence for Sp1 is usually defined by the asymmetric hexanucleotide core GGGCGG but this sequence does not include, among others, the GAG (=CTC) repeat that constitutes a high-affinity site for Sp1 binding to the wt1 promoter.

                          10        20
                  ....*....|....*....|...
gi 33504487   285 YECNECGKTFSWSSTLTHHQRIH 307
Cdd:pfam00096   1 YKCPDCGKSFSRKSNLKRHLRTH 23