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http://dbpedia.org/ontology/abstract Une 1-lysophosphatidylcholine (1-lysoPC) oUne 1-lysophosphatidylcholine (1-lysoPC) ou lysolécithine, est une biomolécule dérivée d'une phosphatidylcholine par hydrolyse d'un résidu d'acide gras en position 1 sur le glycérol ; cette hydrolyse est généralement le fait d'une phospholipase A1. Ils constituent une étape de la biosynthèse des phosphatidylcholines et sont des sous-produits de plusieurs voies métaboliques participant à la lipogenèse dans les cellules. La nomenclature à leur sujet n'est pas fixée et, à travers la littérature les concernant, les 1-lysoPC peuvent également être appelées 2-acylglycéro-3-phosphocholine, 1-lyso-2-acyl-sn-glycéro-3-phosphocholine, β-lysophosphatidylcholine, 2-acylglycérophosphocholine, L-1-lysolécithine, ou encore 1-lécithine. Les 1-lysophosphatidylcholines sont structurellement semblables aux 2-lysophosphatidylcholines à partir desquelles elles se forment spontanément par transfert d'un groupe acyle du carbone 1 au carbone 2 du résidu glycérol, ces deux isomères étant en équilibre : L'équilibre de 90 % de 2-lysoPC et 10 % de 1-lysoPC est atteint avec une demi-vie d'environ 10 minutes aux conditions physiologiques et d'environ une heure aux conditions de laboratoire. Le taux d'isomérisation est le plus faible à pH 4-5 ; une enzyme, la lysolécithine acylmutase (EC 5.4.1.1), a été découverte chez Penicillium notatum : elle catalyse cette isomérisation aux pH acides.atalyse cette isomérisation aux pH acides. , 2-acyl-sn-glycero-3-phosphocholines are a 2-acyl-sn-glycero-3-phosphocholines are a class of phospholipids that are intermediates in the metabolism of lipids. Because they result from the hydrolysis of an acyl group from the sn-1 position of phosphatidylcholine, they are also called 1-lysophosphatidylcholine (or 1-lysoPC, in short). The synthesis of phosphatidylcholines with specific fatty acids occurs through the synthesis of 1-lysoPC. The formation of various other lipids generates 1-lysoPC as a by-product. Other synonyms for this class of compounds are 2-acylglycero-3-phosphocholine, 1-lyso-2-acyl-sn-glycero-3-phosphocholine, β-lysophosphatidylcholine, 2-acylglycerophosphocholine, L-1-lysolecithin and 1-lecithin.ocholine, L-1-lysolecithin and 1-lecithin.
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rdfs:comment Une 1-lysophosphatidylcholine (1-lysoPC) oUne 1-lysophosphatidylcholine (1-lysoPC) ou lysolécithine, est une biomolécule dérivée d'une phosphatidylcholine par hydrolyse d'un résidu d'acide gras en position 1 sur le glycérol ; cette hydrolyse est généralement le fait d'une phospholipase A1. Ils constituent une étape de la biosynthèse des phosphatidylcholines et sont des sous-produits de plusieurs voies métaboliques participant à la lipogenèse dans les cellules.icipant à la lipogenèse dans les cellules. , 2-acyl-sn-glycero-3-phosphocholines are a 2-acyl-sn-glycero-3-phosphocholines are a class of phospholipids that are intermediates in the metabolism of lipids. Because they result from the hydrolysis of an acyl group from the sn-1 position of phosphatidylcholine, they are also called 1-lysophosphatidylcholine (or 1-lysoPC, in short). The synthesis of phosphatidylcholines with specific fatty acids occurs through the synthesis of 1-lysoPC. The formation of various other lipids generates 1-lysoPC as a by-product.lipids generates 1-lysoPC as a by-product.
rdfs:label 1-Lysophosphatidylcholine
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