RNF20

The protein encoded by this gene shares similarity with BRE1 of S. cerevisiae. The protein encoded by this human gene is an E3 ubiquitin ligase that regulates chromosome structure by monoubiquitinating histone H2B. This protein acts as a putative tumor suppressor and positively regulates the p53 tumor suppressor as well as numerous histone H2A and H2B genes. In contrast, this protein also suppresses the expression of several protooncogenes and growth-related genes, including many genes that are induced by epidermal growth factor. This gene selectively suppresses the expression of some genes by interfering with chromatin recruitment of transcription elongation factor SII (TFIIS).

RNF20

Component of the RNF20/40 E3 ubiquitin-protein ligase complex that mediates monoubiquitination of 'Lys-120' of histone H2B (H2BK120ub1). H2BK120ub1 gives a specific tag for epigenetic transcriptional activation and is also prerequisite for histone H3 'Lys-4' and 'Lys-79' methylation (H3K4me and H3K79me, respectively). It thereby plays a central role inb histone code and gene regulation. The RNF20/40 complex forms a H2B ubiquitin ligase complex in cooperation with the E2 enzyme UBE2A or UBE2B; reports about the cooperation with UBE2E1/UBCH are contradictory. Required for transcriptional activation of Hox genes. Recruited to the MDM2 promoter, probably by being recruited by p53/TP53, and thereby acts as a transcriptional coactivator. Mediates the polyubiquitination of isoform 2 of PA2G4 in cancer cells leading to its proteasome-mediated degradation.

Biological Process chromatin organizationIEA:UniProtKB-KW
Biological Process histone H2B conserved C-terminal lysine ubiquitinationManual Assertion Based On ExperimentIBA:GO_Central
Biological Process histone H2B ubiquitinationManual Assertion Based On ExperimentIDA:UniProtKB
Biological Process histone monoubiquitinationManual Assertion Based On ExperimentIDA:UniProtKB
Biological Process negative regulation of cell migrationManual Assertion Based On ExperimentIDA:UniProtKB
Biological Process positive regulation of histone methylationIEA:Ensembl
Biological Process positive regulation of transcription, DNA-templatedManual Assertion Based On ExperimentIMP:UniProtKB
Biological Process protein polyubiquitinationManual Assertion Based On ExperimentIDA:UniProtKB
Biological Process regulation of transcription, DNA-templatedManual Assertion Based On ExperimentIMP:UniProtKB
Biological Process ubiquitin-dependent protein catabolic processManual Assertion Based On ExperimentIMP:UniProtKB

Nucleus