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. 1983 Aug 15;214(2):367–376. doi: 10.1042/bj2140367

The conversion of exogenous retinol and related compounds into retinyl phosphate mannose by adult Brugia pahangi in vitro.

J C Comley, J J Jaffe
PMCID: PMC1152257  PMID: 6193781

Abstract

Adult Brugia pahangi took up and incorporated beta-carotene and free retinol in vitro. The uptake of retinol was 50 times greater than that of beta-carotene under similar incubation conditions. beta-Carotene was almost entirely metabolized, primarily to retinol. The metabolism of retinol by B. pahangi in vitro was less extensive, with a variety of retinoids tentatively identified, including retinyl phosphate (Ret-P), retinyl phosphate mannose (Ret-P-Man) and anhydroretinol as minor metabolites. B. pahangi microsomes were also shown to biosynthesize Ret-P-Man from exogenous Ret-P and GDP-mannose, but not from endogenous lipid acceptors alone. In this circumstance an unidentified lipid appeared to be mannosylated by B. pahangi. The rate of mannose transfer to exogenous Ret-P by B. pahangi microsomes was 150 pmol X min -1. (mg of protein) -1. Ret-P-Man synthetase activity from both B. pahangi and rat liver microsomes had an absolute requirement for bovine serum albumin and MnCl2, and occurred in the absence of detergent. The results suggest a biochemical role for vitamin A in B. pahangi, possibly in filarial glycoprotein synthesis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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