摘要
MnP酶(manganese peroxidase)已被鉴定为降解聚乙烯的关键酶,通过设计不同长度的碳链聚乙烯蜡为实验底物,分别与MnP结合分析。采用Auto dock分子对接软件进行结合能的预测。并用Gromacs软件模拟了水、离子环境下,底物复合物能量、空间构象的变化等情况。研究结果表明MnP酶只能催化C56以下的聚乙烯蜡,随着碳链长度的增加酶与底物结合越不稳定;能量分析表明随着碳链长度的增加,其动能逐渐降低,而总能量亦有降低的趋势。
MnP is identified as a key enzyme in biodegradation of polyethylene.Author designs different carbon length of PE wax as substrate for enzyme.Using software of auto dock predicts binding energy,the results demonstrates that MnP can just catalyze carbon length only in range number of 56.Molecular stimulation is also carried on complex analysis,the results demonstrate kinetic energy will fall off when carbon number raise,and the total energy has the same trend except C49.
出处
《生物技术通报》
CAS
CSCD
北大核心
2009年第S1期356-359,共4页
Biotechnology Bulletin
基金
国家自然科学基金(20777006)
关键词
锰过氧化物酶
聚乙烯降解
分子动力学
结合能
生物降解
Manganese peroxidase
Polyethylene degradation
Molecular stimulation
Binding energy
Biodegradation
