UI - 0 AU - Gerold P AU - Vivas L AU - Ogun SA AU - Azzouz N AU - Brown KN AU - Holder AA AU - Schwarz RT TI - Glycosylphosphatidylinositols of Plasmodium chabaudi chabaudi: a basis for the study of malarial glycolipid toxins in a rodent model LA - ENG PT - JOURNAL ARTICLE DA - 19971215 DP - 1997 Dec 15 IS - 0264-6021 TA - Biochem J PG - 905-11 IP - 3 VI - 328 JC - 9YO AB - Free and protein-bound glycosylphosphatidylinositols (GPIs) of the blood stages of the rodent malarial parasite Plasmodium chabaudi chabaudi AS were identified and characterized. TLC analysis of material extracted by organic solvents from metabolically labelled parasites revealed a distinct set of glycolipids. These glycolipids were identified as GPIs by specific chemical and enzymic treatments and by structural analysis of their glycan and hydrophobic parts. These analyses revealed that P.c.chabaudi AS synthesizes a set of GPI- biosynthesis intermediates and two potential GPI-anchor precursors exhibiting the following structures: ethanolamine-phosphate [(alpha1- 2)mannose]mann o s e ( alpha 1 - 2 ) m a n n o s e ( alpha 1 - 6 ) m a n n o s e ( alpha 1 - 4 ) g l u c o s a m i n e - ( a c y l ) inositol- phosphate-diacylglycerol (P.ch. alpha) and ethanolamine-p h o s p h a t e - m a n n o s e ( alpha 1 - 2 ) m a n n o s e ( alpha 1 - 6 ) m a n n o s e ( alpha 1 - 4 ) g l u c o samine-(acyl)inositol-phosphate- diacylglycerol (P.ch. beta). One of these GPI-anchor precursors (P.ch. alpha) possesses the same carbohydrate structure as the GPI membrane anchor of merozoite surface protein-1 from P.c.chabaudi AS. AD - Zentrum für Hygiene und Med. Mikrobiologie, Philipps- Universität, Robert-Koch Str. 17, 35037 Marburg, Germany PMID- 9396737 SO - Biochem J 1997 Dec 15;328(3):905-11