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Apolipoproteins a

Apolipoproteins a

lipoproteins found in human blood serum in the high-density and very-high-density lipoprotein fraction (hdl, vhdl). They consist of several different polypeptides, the most important of which are apolipoprotein a-I and a-II. They maintain the structural integrity of the hdl particles and are activators of lecithin:cholesterol acyltransferase (lcat). Atherosclerotic patients show low apolipoprotein a levels and these apolipoproteins are either absent or present in extremely low plasma concentration in tangier disease.

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apolipoprotein in HDL

Hi all I'm not a bio major so I don't know about proteins and lipids as much as you guys do. My question is about apolipoproteins in HDL. I know that apoA1 is the most abundant apolipoprotein species in HDL but is there apoA1 in LDL or VLDL as well? If there is, do they share the ...

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by staysweet
Wed May 15, 2013 11:56 am
Forum: Molecular Biology
Topic: apolipoprotein in HDL
Replies: 1
Views: 1583

Active Transportation in the human body

... component that binds to the receptor. I can think of two examples right now. 1. Cholesterol travels in the blood complexed with proteins called apolipoproteins in lipoprotein particles(LDL, HDL etc). When a cell takes up cholesterol from the blood, it takes up the whole particle by receptor ...

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by MrMistery
Sun Aug 19, 2007 8:05 pm
Forum: Cell Biology
Topic: Active Transportation in the human body
Replies: 4
Views: 12650

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