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General Information
Commentary
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physiological function
function of LRAT is to catalyze a trans-esterification reaction that occurs between the sn-1 position of lecithin molecules in the lipid bilayer of the smooth endoplasmic reticulum and all-trans-retinol in the formation of all-trans-retinyl esters. Functional role of LRAT in the visual cycle
physiological function
lecithin:retinol acyltransferase is critical for cellular uptake of vitamin A from serum retinol-binding protein, which depends on functional coupling of STRA6 with intracellular lecithin:retinol acyltransferase. Vitamin A uptake is regulated by all-trans-retinoic acid in nonocular tissues of mice. When in excess, vitamin A is rapidly taken up and converted to its inert ester form in peripheral tissues, such as lung, whereas in vitamin A deficiency, ocular retinoid uptake is favored
physiological function
lecithin:retinol acyltransferase, LRAT, is a membrane-bound protein that plays an essential function in the visual cycle. It catalyzes the esterification of retinol into retinyl esters in the retinal pigment epithelium as well as in other tissues including testis, liver, and intestine
physiological function
relationship between LRAT and Crbp1 during retinyl ester biosynthesis in which mitochondria associated membranes-associated Crpb1 and LRAT colocalize, and both surround the growing retinyl ester-containing lipid droplet. The N-terminus of LRAT, especially K36 and R38, is essential to colocalization with the lipid droplet
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