Scaffold attachment factor B, also known as SAFB, is a
gene
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a ba ...
with homologs that have been studied in humans and mice.
Function
This gene encodes a DNA-binding protein that has 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 are conflicting views as to whether this protein is a component of chromatin, the nuclear matrix, or both. Scaffold attachment factors are a subset of nuclear matrix proteins (NMP) with enriched binding to AT-rich S/MAR sequences. The SAF-B 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 the heat shock protein 27 transcription and also can act as an estrogen receptor corepressor. This gene is a candidate gene for breast tumorigenesis.
Interactions
SAFB has been shown to
interact
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with:
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Estrogen receptor alpha
Estrogen receptor alpha (ERĪ±), also known as NR3A1 (nuclear receptor subfamily 3, group A, member 1), is one of two main types of estrogen receptor, a nuclear receptor (mainly found as a chromatin-binding protein)
that is activated by the sex ...
,
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HNRPD
Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD) also known as AU-rich element RNA-binding protein 1 (AUF1) is a protein that in humans is encoded by the ''HNRNPD'' gene. Alternative splicing of this gene results in four transcript variants.
...
,
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SAFB2
Scaffold attachment factor B2 is a protein that in humans is encoded by the ''SAFB2'' gene.
Interactions
SAFB2 has been shown to interact
Advocates for Informed Choice, doing business as, dba interACT or interACT Advocates for Intersex Yo ...
,
and
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TAF15
TATA-binding protein-associated factor 2N is a protein that in humans is encoded by the ''TAF15'' gene.
Function
Initiation of transcription by RNA polymerase II requires the activities of more than 70 polypeptides. The protein that coordinates ...
.
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References
Further reading
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