Major structural proteins of triacylglycerol-rich LIPOPROTEINS. There are two forms, apolipoprotein B-100 and apolipoprotein B-48, both derived from a single gene. ApoB-100 expressed in the liver is found in low-density lipoproteins (LIPOPROTEINS, LDL; LIPOPROTEINS, VLDL). ApoB-48 expressed in the intestine is found in CHYLOMICRONS. They are important in the biosynthesis, transport, and metabolism of triacylglycerol-rich lipoproteins. Plasma Apo-B levels are high in atherosclerotic patients but non-detectable in ABETALIPOPROTEINEMIA.

Descriptor ID	D001055
MeSH Number(s)	D10.532.091.300 D12.776.070.400.300 D12.776.521.120.300
Concept/Terms	Apolipoproteins B Apolipoproteins B Apo-B ApoB Apo B Apoproteins B Apoproteins B Apoprotein (B)

Below are MeSH descriptors whose meaning is more general than "Apolipoproteins B".

Below are MeSH descriptors whose meaning is related to "Apolipoproteins B".

Below are MeSH descriptors whose meaning is more specific than "Apolipoproteins B".