Publication Date:
1990-11-16
Description:
Glycosylphosphatidylinositol (GPI) serves as a membrane anchor for a large number of eukaryotic proteins. A genetic approach was used to investigate the biosynthesis of GPI anchor precursors in mammalian cells. T cell hybridoma mutants that cannot synthesize dolichol-phosphate-mannose (Dol-P-Man) also do not express on their surface GPI-anchored proteins such as Thy-1 and Ly-6A. These mutants cannot form mannose-containing GPI precursors. Transfection with the yeast Dol-P-Man synthase gene rescues the synthesis of both Dol-P-Man and mannose-containing GPI precursors, as well as the surface expression of Thy-1 and Ly-6A, suggesting that Dol-P-Man is the donor of at least one mannose residue in the GPI core.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉DeGasperi, R -- Thomas, L J -- Sugiyama, E -- Chang, H M -- Beck, P J -- Orlean, P -- Albright, C -- Waneck, G -- Sambrook, J F -- Warren, C D -- AR-03564/AR/NIAMS NIH HHS/ -- HD-16942/HD/NICHD NIH HHS/ -- HD-21087/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1990 Nov 16;250(4983):988-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Massachusetts General Hospital, Boston 02114.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1978413" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Antigens, Ly/metabolism
;
Antigens, Surface/metabolism
;
Antigens, Thy-1
;
Cell Membrane/physiology
;
Dolichol Monophosphate Mannose/metabolism
;
*Genes, Fungal
;
Glycolipids/*biosynthesis
;
Glycosylphosphatidylinositols
;
Hybridomas
;
Phosphatidylinositols/*biosynthesis
;
Rats
;
Saccharomyces cerevisiae/genetics
;
*Transfection
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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