Aliases for APOB Gene
External Ids for APOB Gene
Previous GeneCards Identifiers for APOB Gene
This gene product is the main apolipoprotein of chylomicrons and low density lipoproteins. It occurs in plasma as two main isoforms, apoB-48 and apoB-100: the former is synthesized exclusively in the gut and the latter in the liver. The intestinal and the hepatic forms of apoB are encoded by a single gene from a single, very long mRNA. The two isoforms share a common N-terminal sequence. The shorter apoB-48 protein is produced after RNA editing of the apoB-100 transcript at residue 2180 (CAA->UAA), resulting in the creation of a stop codon, and early translation termination. Mutations in this gene or its regulatory region cause hypobetalipoproteinemia, normotriglyceridemic hypobetalipoproteinemia, and hypercholesterolemia due to ligand-defective apoB, diseases affecting plasma cholesterol and apoB levels. [provided by RefSeq, Jul 2008]
GeneCards Summary for APOB Gene
APOB (Apolipoprotein B) is a Protein Coding gene. Diseases associated with APOB include hypobetalipoproteinemia and hypercholesterolemia, due to ligand-defective apo b. Among its related pathways are Fat digestion and absorption and Vitamin digestion and absorption. GO annotations related to this gene include binding and heparin binding. An important paralog of this gene is LOC400499.
UniProtKB/Swiss-Prot for APOB Gene
Apolipoprotein B is a major protein constituent of chylomicrons (apo B-48), LDL (apo B-100) and VLDL (apo B-100). Apo B-100 functions as a recognition signal for the cellular binding and internalization of LDL particles by the apoB/E receptor.