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Braz. j. med. biol. res ; 27(2): 243-8, Feb. 1994. ilus
Artículo en Inglés | LILACS | ID: lil-140259

RESUMEN

The structure of the glycan moiety of the glycosylphosphatidylinositol (GPI) membrane anchor from Torpedo californica electric organ acetylcholinesterase was solved using nuclear magnetic resonance (NMR), methylation analysis, and chemical and enzymic microsequencing. Two structures were found to be present: Glcalfa1-2 Manalfa1-2 Manalfa1-6 Manalfa1-4 GlcNalfa1-6myo-inositol, and Glcalfa1-2 Manalfa1-2 Manalfa1-6 (GalNAcß1-4) Manalfa1-4 GlcNalfa1-6myo-inositol. The presence of glucose in this GPI anchor structure is a novel feature. The anchor was also shown to contain 2.3 residues of ethanolamine per molecule


Asunto(s)
Acetilcolinesterasa/metabolismo , Fosfatidilinositoles/química , Glucolípidos/química , Torpedo , Acetilcolinesterasa/aislamiento & purificación , Etanolaminas , Ácidos Grasos , Espectroscopía de Resonancia Magnética
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