SNF8 Antibody – Rabbit Polyclonal

SNF8, VPS25 (MIM 610907), and VPS36 (MIM 610903) form ESCRT-II (endosomal sorting complex required for transport II), a complex involved in endocytosis of ubiquitinated membrane proteins. SNF8, VPS25, and VPS36 are also associated in a multiprotein complex with RNA polymerase II elongation factor (ELL; MIM 600284) (Slagsvold et al., 2005 [PubMed 15755741]; Kamura et al., 2001 [PubMed 11278625]).[supplied by OMIM, Mar 2008]

SNF8: Component of the endosomal sorting complex required for transport II (ESCRT-II), which is required for multivesicular body (MVB) formation and sorting of endosomal cargo proteins into MVBs. The MVB pathway mediates delivery of transmembrane proteins into the lumen of the lysosome for degradation. The ESCRT-II complex is probably involved in the recruitment of the ESCRT-III complex. The ESCRT-II complex may also play a role in transcription regulation by participating in derepression of transcription by RNA polymerase II, possibly via its interaction with ELL. Required for degradation of both endocytosed EGF and EGFR, but not for the EGFR ligand-mediated internalization. It is also required for the degradation of CXCR4. Belongs to the SNF8 family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Transcription factor

Chromosomal Location of Human Ortholog: 17q21.32

Cellular Component: nucleoplasm; transcription factor complex; late endosome membrane; cytoplasm; cytosol

Molecular Function: protein binding; protein homodimerization activity; transcription factor binding

Biological Process: regulation of transcription from RNA polymerase II promoter; transcription, DNA-dependent; protein targeting to vacuole during ubiquitin-dependent protein catabolic process via the MVB pathway; endosome transport