SAFB
Protein-coding gene in the species Homo sapiens
Scaffold attachment factor B, also known as SAFB, is a gene with homologs that have been studied in humans and mice.
01Function
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.
02Interactions
SAFB has been shown to interact with:
- Estrogen receptor alpha,
- HNRPD,
- SAFB2, and
- TAF15.
Sources and credits
This article is adapted from the Wikipedia article “SAFB”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Ideogram human chromosome 19.svg by National Center for Biotechnology Information, U.S. National Library of Medicine, Public domain
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