COMPASS component SPP1

UniProtKB accession:  Q03012

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Component of the Set1C/COMPASS complex that specifically mono-, di- and trimethylates histone H3 to form H3K4me1/2/3, which subsequently plays a role in telomere length maintenance and transcription elongation regulation (PubMed:11742990, PubMed:11805083, PubMed:11752412). COMPASS recognizes ubiquitinated H2B on one face of the nucleosome which stimulates the methylation of H3 on the opposing face (PubMed:31922488). SPP1/CPS40 can recognize methylated histone lysine residue H3K4me3 or unmethylated H3K4 (PubMed:30100186, PubMed:31253666). Stimulates the RNA binding activity of SET1 (PubMed:29071121).