PA2G4 Antibody – Rabbit Polyclonal

This gene encodes an RNA-binding protein that is involved in growth regulation. This protein is present in pre-ribosomal ribonucleoprotein complexes and may be involved in ribosome assembly and the regulation of intermediate and late steps of rRNA processing. This protein can interact with the cytoplasmic domain of the ErbB3 receptor and may contribute to transducing growth regulatory signals. This protein is also a transcriptional co-repressor of androgen receptor-regulated genes and other cell cycle regulatory genes through its interactions with histone deacetylases. This protein has been implicated in growth inhibition and the induction of differentiation of human cancer cells. Six pseudogenes, located on chromosomes 3, 6, 9, 18, 20 and X, have been identified. [provided by RefSeq, Jul 2008]

Ebp1: May play a role in a ERBB3-regulated signal transduction pathway. Seems be involved in growth regulation. Acts a corepressor of the androgen receptor (AR) and is regulated by the ERBB3 ligand neuregulin-1/heregulin (HRG). Inhibits transcription of some E2F1-regulated promoters, probably by recruiting histone acetylase (HAT) activity. Binds RNA. Associates with 28S, 18S and 5.8S mature rRNAs, several rRNA precursors and probably U3 small nucleolar RNA. May be involved in regulation of intermediate and late steps of rRNA processing. May be involved in ribosome assembly. Mediates cap-independent translation of specific viral IRESs (internal ribosomal entry site). Belongs to the peptidase M24 family.

Protein type: Nuclear receptor co-regulator; Nucleolus; Transcription, coactivator/corepressor

Chromosomal Location of Human Ortholog: 12q13.2

Cellular Component: cytoplasm; membrane; nucleolus; nucleoplasm; nucleus; ribonucleoprotein complex

Molecular Function: DNA binding; protein binding; transcription factor activity; ubiquitin protein ligase binding

Biological Process: cell cycle arrest; cell proliferation; negative regulation of apoptosis; negative regulation of transcription, DNA-dependent; positive regulation of cell differentiation; regulation of translation; rRNA processing; transcription, DNA-dependent