Clayton C E
Rockefeller University, New York 10021-6399.
J Cell Biol. 1987 Dec;105(6 Pt 1):2649-54. doi: 10.1083/jcb.105.6.2649.
The glycolytic enzymes of Trypanosomatids are compartmentalized within peroxisome-like microbodies called glycosomes. Fructose bisphosphate aldolase is synthesized on free polysomes and imported into glycosomes within 5 min. Peptide mapping reveals no primary structural differences between the in vivo-synthesized protein and that made in vitro from a synthetic template. However, native aldolase from glycosomes is partially protease resistant, whereas the in vitro translation product is not. Pulse-chase results indicate that aldolase in bloodstream trypanosomes has a much longer half-life than in the procyclic tsetse fly form.
锥虫的糖酵解酶被分隔在称为糖体的过氧化物酶体样微体中。果糖二磷酸醛缩酶在游离多核糖体上合成,并在5分钟内导入糖体。肽图分析表明,体内合成的蛋白质与体外从合成模板合成的蛋白质在一级结构上没有差异。然而,来自糖体的天然醛缩酶对蛋白酶有部分抗性,而体外翻译产物则没有。脉冲追踪结果表明,血液中的锥虫中的醛缩酶半衰期比采采蝇前循环型中的长得多。