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Bioinformatics Analysis of PSY in 21 Plant Species
Author(s): 
Pages: 2157-2165
Year: Issue:  12
Journal: Xinjiang Agricultural Sciences

Keyword:  phytoene synthasephylogeneticbioinformatics analysis;
Abstract: [目的]对番茄等21种植物的八氢番茄红素合成酶(phytoene synthase,PSY)进行生物信息学分析,为研究植物八氢番茄红素合成酶的结构与功能分析奠定基础.[方法]采用Blast、ProtParam和SignalP等生物信息学软件,对番茄、拟南芥、辣椒和胡萝卜等21种植物PSY的理化性质、蛋白结构和系统发生树等进行分析.[结果]21种植物PSY氨基酸不存在信号肽,不具有跨膜结构,推测PSY可能定位于细胞质叶绿体中发挥功能,二级结构由α螺旋、无规则卷曲和延伸链等结构元件组成.[结论]PSY蛋白为较不稳定亲水性蛋白,亚细胞定位于叶绿体上.不经过跨膜转运,而是直接在细胞质基质中形成.
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