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Conserved domains on  [gi|259490343|ref|NP_001159359|]
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zinc finger protein 268 isoform h [Homo sapiens]

Protein Classification

KRAB domain-containing protein( domain architecture ID 12204266)

KRAB (Kruppel-associated box) domain-containing protein (KRAB-ZFP) may play a role in cell differentiation, organ development, or in regulating viral replication and transcription

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
KRAB smart00349
krueppel associated box;
14-74 1.71e-35

krueppel associated box;


:

Pssm-ID: 214630 [Multi-domain]  Cd Length: 61  Bit Score: 116.15  E-value: 1.71e-35
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 259490343    14 LSFMDVFVDFTWEEWQLLDPAQKCLYRSVMLENYSNLVSLGYQHTKPDIIFKLEQGEELCM 74
Cdd:smart00349   1 VTFEDVAVYFTQEEWEQLDPAQKNLYRDVMLENYSNLVSLGFQVPKPDLISQLEQGEEPWI 61
 
Name Accession Description Interval E-value
KRAB smart00349
krueppel associated box;
14-74 1.71e-35

krueppel associated box;


Pssm-ID: 214630 [Multi-domain]  Cd Length: 61  Bit Score: 116.15  E-value: 1.71e-35
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 259490343    14 LSFMDVFVDFTWEEWQLLDPAQKCLYRSVMLENYSNLVSLGYQHTKPDIIFKLEQGEELCM 74
Cdd:smart00349   1 VTFEDVAVYFTQEEWEQLDPAQKNLYRDVMLENYSNLVSLGFQVPKPDLISQLEQGEEPWI 61
KRAB pfam01352
KRAB box; The KRAB domain (or Kruppel-associated box) is present in about a third of zinc ...
 13-54 2.82e-24

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.


Pssm-ID: 460171  Cd Length: 42  Bit Score: 87.53  E-value: 2.82e-24
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 259490343   13 PLSFMDVFVDFTWEEWQLLDPAQKCLYRSVMLENYSNLVSLG 54
Cdd:pfam01352   1 SVTFEDVAVDFTQEEWALLDPAQRNLYRDVMLENYRNLVSLG 42
KRAB_A-box cd07765
KRAB (Kruppel-associated box) domain -A box; The KRAB domain is a transcription repression ...
 14-53 7.54e-19

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.


Pssm-ID: 143639  Cd Length: 40  Bit Score: 73.35  E-value: 7.54e-19
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|
gi 259490343  14 LSFMDVFVDFTWEEWQLLDPAQKCLYRSVMLENYSNLVSL 53
Cdd:cd07765    1 VTFEDVAVYFSQEEWELLDPAQRDLYRDVMLENYENLVSL 40
 
Name Accession Description Interval E-value
KRAB smart00349
krueppel associated box;
14-74 1.71e-35

krueppel associated box;


Pssm-ID: 214630 [Multi-domain]  Cd Length: 61  Bit Score: 116.15  E-value: 1.71e-35
                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 259490343    14 LSFMDVFVDFTWEEWQLLDPAQKCLYRSVMLENYSNLVSLGYQHTKPDIIFKLEQGEELCM 74
Cdd:smart00349   1 VTFEDVAVYFTQEEWEQLDPAQKNLYRDVMLENYSNLVSLGFQVPKPDLISQLEQGEEPWI 61
KRAB pfam01352
KRAB box; The KRAB domain (or Kruppel-associated box) is present in about a third of zinc ...
 13-54 2.82e-24

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.


Pssm-ID: 460171  Cd Length: 42  Bit Score: 87.53  E-value: 2.82e-24
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 259490343   13 PLSFMDVFVDFTWEEWQLLDPAQKCLYRSVMLENYSNLVSLG 54
Cdd:pfam01352   1 SVTFEDVAVDFTQEEWALLDPAQRNLYRDVMLENYRNLVSLG 42
KRAB_A-box cd07765
KRAB (Kruppel-associated box) domain -A box; The KRAB domain is a transcription repression ...
 14-53 7.54e-19

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.


Pssm-ID: 143639  Cd Length: 40  Bit Score: 73.35  E-value: 7.54e-19
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|
gi 259490343  14 LSFMDVFVDFTWEEWQLLDPAQKCLYRSVMLENYSNLVSL 53
Cdd:cd07765    1 VTFEDVAVYFSQEEWELLDPAQRDLYRDVMLENYENLVSL 40
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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