摘要
过氧化物酶在生物界分布极广,在细胞代谢的氧化还原过程中起重要的作用。为深入研究蛇苔过氧化物酶的理化性质及功能,对其同源性,亚细胞定位,结构和功能等进行了生物信息学预测和分析。结果表明:该序列有1050bp长的开放阅读框,编码349个氨基酸,与拟南芥等的POD相似性较高(相似性为71%)。预测R68、F71、H72、P170、H200和D276为该酶的活性位点,C41与C122、C74与C79、C128与C328、C207与C239形成四对二硫键,对蛋白质的功能、天然构象和稳定性有重要作用,为研究苔类植物过氧化物酶的作用机制和功能等奠定了基础。
Peroxidases is widespread in biological world. It plays an important role in the cell redox metabolism. In or- der to luther study the characteristics and functions of Conocephalum conicum poroxidase, we performed bioinformat- ies analysis of its homology, subellular location, tertiary structure, function and so on. The results showed that the sequence had a complete open read frame of about 1 050 bp and encodes 349 amino acids,and the sequence had similar POD with that of Arabidopsis thaliana （the similarity beween them is 71%）. This sequence was predicated to be C. conicum poroxidase which belonged to the poroxidase super family, and R68, F71, H72, P170, H200 and D276 to be the C. conicum POD＇s active sites in which the four groups of disulfide bonds：CA and C122,C74 and C79,C128 and C328,C207 and C239 played a very important role in maintaining the protein＇s function, natural conformation and stability. This study would set an important foundation for the study of the interaction mechanisms and functions of the C. conicum poroxidase.
出处
《广西植物》
CAS
CSCD
北大核心
2011年第6期806-812,共7页
Guihaia
基金
绵阳师范学院校级科研基金(2011A05)~~
关键词
过氧化物酶
蛇苔
序列分析
功能预测
peroxidases
Conocephalum conicum
sequence analysis
function predication
作者简介
李茹兰（1985-），女，四川内江人，硕士研究生，主要研究方向为分子生物学，E-mail：lilanstudy@163.com
通讯作者：阮期平，男，博士，教授，分子生物学与生化药学，E-mail：rqp2200070@yahoo.com.cn
