作者:Ulrich Matern、Christa Feser、Werner Heller
DOI:10.1016/0003-9861(84)90271-6
日期:1984.11
distinguished from several O-malonyltransferase activities also present in the same seedlings. N-Malonic acid conjugates have been previously isolated from peanut either as a natural constituent or after feeding with xenobiotics. By analogy to the results reported with cultured parsley cells, multiple malonyltransferases in peanut may have a role in vacuolar transport. Crude extracts of young peanut seedlings
从花生幼苗中纯化了三种不同的N-丙二酰基转移酶,分别接受邻氨基苯甲酸,D-色氨酸或3,4-二氯苯胺作为底物。当将1-氨基环丙烷-1-羧酸用作底物时,部分纯化的丙二酰-CoA:D-色氨酸丙二酰转移酶也催化相应丙二酸缀合物的形成。这些N-丙二酰基转移酶明显不同于同一幼苗中也存在的几种O-丙二酰基转移酶活性。先前已从花生中分离出N-丙二酸共轭物作为天然成分或与异种生物一起喂养后。与培养的欧芹细胞报道的结果类似,花生中的多种丙二酰转移酶可能在液泡运输中起作用。年轻的花生幼苗的粗提取物不能水解各自的N-丙二酸结合物。然而,老植物的透析提取物从丙二酰基-1-氨基环丙烷-1-羧酸中释放丙二酸,但未从丙二酰基-3,4-二氯苯胺中释放丙二酸,表明某些N-丙二酸结合物可能在接近衰老的植物中代谢。