APOB (Entrez ID: 338)

Entrez Gene ID 338
Official Gene Symbol APOB (GeneCards)
Full name apolipoprotein B
Location 2p24.1
Other ids Vega : OTTHUMG00000090785
MIM : 107730
HGNC : HGNC:603
Ensembl : ENSG00000084674
Other names FLDB, LDLCQ4, apoB-48, apoB-100
Summary 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]

Variants

Found 138 variants in this database.