A1CF Antibody – Rabbit Polyclonal

Mammalian apolipoprotein B mRNA undergoes site-specific C to U deamination, which is mediated by a multi-component enzyme complex containing a minimal core composed of APOBEC-1 and a complementation factor encoded by this gene. The gene product has three non-identical RNA recognition motifs and belongs to the hnRNP R family of RNA-binding proteins. It has been proposed that this complementation factor functions as an RNA-binding subunit and docks APOBEC-1 to deaminate the upstream cytidine. Studies suggest that the protein may also be involved in other RNA editing or RNA processing events. Several transcript variants encoding a few different isoforms have been found for this gene. [provided by RefSeq, Nov 2010]

ACF: Essential component of the apolipoprotein B mRNA editing enzyme complex which is responsible for the postranscriptional editing of a CAA codon for Gln to a UAA codon for stop in APOB mRNA. Binds to APOB mRNA and is probably responsible for docking the catalytic subunit, APOBEC1, to the mRNA to allow it to deaminate its target cytosine. The complex also protects the edited APOB mRNA from nonsense-mediated decay. 6 isoforms of the human protein are produced by alternative splicing.

Protein type: RNA processing; RNA-binding; Hydrolase

Chromosomal Location of Human Ortholog: 10q11.23

Cellular Component: apolipoprotein B mRNA editing enzyme complex; cytoplasm; endoplasmic reticulum; nucleoplasm

Molecular Function: double-stranded RNA binding; nucleotide binding; protein binding; RNA binding; single-stranded RNA binding

Biological Process: cytidine to uridine editing; gene expression; mRNA modification; mRNA processing; protein stabilization