Nuclear Cap Binding Protein Subunit 1 (NCBP1) Antibody – Rabbit Polyclonal

The product of this gene is a component of the nuclear cap-binding protein complex (CBC), which binds to the monomethylated 5' cap of nascent pre-mRNA in the nucleoplasm. The encoded protein promotes high-affinity mRNA-cap binding and associates with the CTD of RNA polymerase II. The CBC promotes pre-mRNA splicing, 3'-end processing, RNA nuclear export, and nonsense-mediated mRNA decay. [provided by RefSeq, Jul 2008]

NCBP1: mediates U snRNA export from the nucleus. Binds to 5' capped mRNA. Found in aU snRNA export complex with RNUXA/PHAX, CBP20, CBP80, RAN, XPO1 and m7G-capped RNA. Interaction with RNUXA/PHAX. Heterodimer with NCBP2. Is part of the exon junction complex (EJC) containing NCBP1, NCBP2, RNPS1, RBM8A, SRRM1, NXF1, UPF3B, UPF2, THOC4 and/or REFBP2.

Protein type: RNA processing; Spliceosome; Translation

Chromosomal Location of Human Ortholog: 9q34.1

Cellular Component: nucleoplasm; mRNA cap complex; mitochondrion; cytoplasm; ribonucleoprotein complex; cytosol; nucleus

Molecular Function: protein binding; RNA binding; RNA cap binding

Biological Process: transcription from RNA polymerase II promoter; spliceosomal snRNP biogenesis; viral reproduction; positive regulation of viral transcription; RNA splicing; positive regulation of mRNA 3'-end processing; histone mRNA metabolic process; nuclear mRNA splicing, via spliceosome; mRNA export from nucleus; mRNA capping; RNA elongation from RNA polymerase II promoter; mRNA catabolic process, nonsense-mediated decay; gene expression; RNA-mediated gene silencing; nuclear mRNA cis splicing, via U2-type spliceosome; mRNA 3'-end processing; termination of RNA polymerase II transcription; regulation of translational initiation; mRNA cleavage