TARGETID

T05661

FORMERID

TTDI02111

UNIPROID

LCAT_HUMAN

TARGNAME

Lecithin-cholesterol acyltransferase (LCAT)

GENENAME

LCAT

TARGTYPE

Clinical trial target

SYNONYMS

Phospholipidcholesterolacyltransferase; Phospholipid-cholesterol acyltransferase; Phosphatidylcholinesterol acyltransferase; Phosphatidylcholine-sterol acyltransferase

FUNCTION

Synthesized mainly in the liver and secreted into plasma where it converts cholesterol and phosphatidylcholines (lecithins) to cholesteryl esters and lysophosphatidylcholines on the surface of high and low density lipoproteins (HDLs and LDLs). The cholesterol ester is then transported back to the liver. Has a preference for plasma 16:0-18:2 or 18:O-18:2 phosphatidylcholines. Also produced in the brain by primary astrocytes, and esterifies free cholesterol on nascent APOE-containing lipoproteins secreted from glia and influences cerebral spinal fluid (CSF) APOE- and APOA1 levels. Together with APOE and the cholesterol transporter ABCA1, plays a key role in the maturation of glial-derived, nascent lipoproteins. Required for remodeling high-density lipoprotein particles into their spherical forms. Central enzyme in the extracellular metabolism of plasma lipoproteins.

PDBSTRUC

6MVD; 5TXF; 5BV7; 4XX1; 4XWG

BIOCLASS

Acyltransferase

ECNUMBER

EC 2.3.1.43

SEQUENCE

MGPPGSPWQWVTLLLGLLLPPAAPFWLLNVLFPPHTTPKAELSNHTRPVILVPGCLGNQLEAKLDKPDVVNWMCYRKTEDFFTIWLDLNMFLPLGVDCWIDNTRVVYNRSSGLVSNAPGVQIRVPGFGKTYSVEYLDSSKLAGYLHTLVQNLVNNGYVRDETVRAAPYDWRLEPGQQEEYYRKLAGLVEEMHAAYGKPVFLIGHSLGCLHLLYFLLRQPQAWKDRFIDGFISLGAPWGGSIKPMLVLASGDNQGIPIMSSIKLKEEQRITTTSPWMFPSRMAWPEDHVFISTPSFNYTGRDFQRFFADLHFEEGWYMWLQSRDLLAGLPAPGVEVYCLYGVGLPTPRTYIYDHGFPYTDPVGVLYEDGDDTVATRSTELCGLWQGRQPQPVHLLPLHGIQHLNMVFSNLTLEHINAILLGAYRQGPPASPTASPEPPPPE

DRUGINFO

MEDI6012

KEGGPATH

hsa00564:Glycerophospholipid metabolism

WIKIPATH

WP2764:Lipid digestion, mobilization, and transport

WIKIPATH

WP430:Statin Pathway

REACPATH

R-HSA-194223:HDL-mediated lipid transport