TF Info Page for SAFB (Unknown)

Conclusion

Assessment Binding Mode Motif Status Notes Comments
Likely to be sequence specific TF 3 Low specificity DNA-binding protein No motif Based on this review the protein is likely to bind AT-rich DNA in a non-sequence specific manner (PMID: 27888239)

Description

Description: scaffold attachment factor B [Source:HGNC Symbol;Acc:HGNC:10520]
Entrez Summary This gene encodes a DNA-binding protein which has high specificity for scaffold or matrix attachment region DNA elements (S/MAR DNA). This protein is thought to be involved in attaching the base of chromatin loops to the nuclear matrix but there is conflicting evidence as to whether this protein is a component of chromatin or a nuclear matrix protein. Scaffold attachment factors are a specific subset of nuclear matrix proteins (NMP) that specifically bind to S/MAR. The encoded protein is thought to serve as a molecular base to assemble a 'transcriptosome complex' in the vicinity of actively transcribed genes. It is involved in the regulation of heat shock protein 27 transcription, can act as an estrogen receptor co-repressor and is a candidate for breast tumorigenesis. This gene is arranged head-to-head with a similar gene whose product has the same functions. Multiple transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jan 2011]
Ensembl ID: ENSG00000160633
External Link: CisBP
Interpro IPR000504; IPR003034;
Protein Domain:
Domain:
Protein: DBD: OtherOther:

Previous Annotations

Source Annotation
TF-CAT classification TF Gene_Transcription Factor Binding
tf co-factor binding_TF PPI_
PMIDS:15066997
Vaquerizas 2009 TF classification
"a" Has direct evidence of TF function;
"b" Has evidence for an orthologous TF;
"c" contains likely DBDs, but has no functional evidence;
"x" is an unlikely TF such as predicted gene, genes with likely non-specific DBDs or that have function outside transcription;
"other" category contains proteins without clear DBDs they curated from external sources.
No
CisBP considers it as a TF? No
TFclass considers it as a TF? No
Has GO:0003700 "transcription factor activity, sequence-specific DNA binding" No
GO-Info
Initial Assessment
1a1 Protein has a high confidence PWM (HT-SELEX, PBM or B1H model) or there is a crystal structure that supports sequence specific DNA binding;
1a2 There is high confidence data for a close ortholog (as defined in CisBP);
2a1 There is lower confidence direct evidence, such as a Jaspar, Hocomoco or Transfac model;
2a2 There is lower confidence evidence for an close ortholog;
3a There is decent circumstantial evidence for its role as a TF or not;
4a Two or more datasets predict it as a TF;
5a One of the source datasets predicts is as a TF
5a, one of the source datasets predicts is as a TF
TF has conditional DNA-binding requirements

DNA-Binding

Published Motif Data

Source Annotation Motif Evidence

Structure

Structure PDB Not_Covered

Experimental History

Method Constructs
Tried in PBM?
(Whether the protein was tried in PBM or not)
Tried in HT-SELEX
(Whether the protein was tried in HT-SELEX or not, and if so, then what kind of clones were tested)
Other Information?
(Tried with another method and failed?)

External Contribution