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A SPHINGOMYELIN-TRANSFERRING PROTEIN FROM CHICKEN LIVER - USE OF PYRENE-LABELED PHOSPHOLIPID
被引:29
|作者:
TIMMERMANSHEREIJGERS, JLPM
SNOEK, GT
WIRTZ, KWA
机构:
[1] UNIV UTRECHT,CTR BIOMEMBRANES & LIPID ENZYMOL,3508 TB UTRECHT,NETHERLANDS
[2] HELSINKI UNIV,DEPT BASIC CHEM,SF-00014 HELSINKI,FINLAND
关键词:
D O I:
10.1074/jbc.270.24.14263
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
A phospholipid transfer protein was purified from chicken liver which, in addition to phosphatidylinositol (PI) and phosphatidylcholine (PC), carries sphingomyelin (SM) between membranes. For comparison, the PI-transfer protein from chicken liver only carries PI and PC. Specificity was established by use of phospholipids that carry a pyrene-labeled acyl chain. Based on the N-terminal sequence and Western blot analysis we conclude that this protein is an isoform of the PI-transfer protein. At increasing length of the pyrene-labeled acyl chain, the isoform expresses a high activity toward SM, a low activity toward PI, and virtually no activity toward PC.
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页码:14263 / 14266
页数:4
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