Improved thermostability of Thermomyces lanuginosus lipase by molecular dynamics simulation and in silico mutation prediction and its application in biodiesel production

热稳定性 生物信息学 脂肪酶 分子动力学 生物柴油生产 生物柴油 化学 酯交换 生化工程 生物化学 有机化学 计算化学 催化作用 基因 工程类
作者
Pingping Qu,Dong‐Dong Li,Raudah Lazim,Rui Xu,Dunchi Xiao,Fei Wang,Xun Li,Yu Zhang
出处
期刊:Fuel [Elsevier BV]
卷期号:327: 125039-125039 被引量:30
标识
DOI:10.1016/j.fuel.2022.125039
摘要

• TLL was subjected to MD simulation and in silico mutation prediction. • The G91C mutant enhanced the activity and thermostability of the enzyme. • The FAME yield catalyzed by G91C mutant was as high as 91% at 43 °C. • The extra hydrogen bond formed between Cys91 and Glu87 made the α-helix more stable. To improve the thermostability of Thermomyces lanuginosus lipase (TLL) which has been widely used in biodiesel production, molecular dynamics (MD) simulation was applied to find the fluctuation regions under different temperatures. In silico mutation prediction was also applied to calculate the mutation stability of amino acid residues for site mutagenesis. Six mutants were predicted and subjected to mutagenesis and expressed in Pichia pastoris KM71H. The enzyme activity of G91C not only increased by 53.8%, but also enhanced the residual activity by about 25 ∼ 45% in thermostability. With 5 °C higher than that of the wild type in optimal temperature, the catalytic efficiency of G91C was also increased by 1.3 times. The fatty acid methyl esters (FAME) yield catalyzed by G91C was as high as 91% at 43 °C, 7% higher than that of the WT during the transesterification of Cornus wilsoniana oil to biodiesel. According to the structural comparisons, it was found that there was an extra main-side hydrogen bond between Cys91 and Glu87 separated by four amino acid residues and a more stable α-helix was obtained, which may be the key factor in the thermostability enhancement. In total, the engineered G91C mutant showed great potential in the production of biodiesel at high temperature.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
tang完成签到,获得积分10
刚刚
海棠花未眠完成签到,获得积分10
刚刚
djh233发布了新的文献求助20
2秒前
曲又蓝完成签到,获得积分10
2秒前
白开水完成签到,获得积分20
3秒前
3秒前
蚂蚁Y嘿完成签到,获得积分10
4秒前
4秒前
rose完成签到,获得积分10
4秒前
ding应助Xx采纳,获得10
4秒前
4秒前
丂枧完成签到 ,获得积分10
5秒前
今后应助gao采纳,获得10
5秒前
5秒前
赘婿应助zSmart采纳,获得10
6秒前
云魂完成签到,获得积分10
6秒前
6秒前
orixero应助郭翔采纳,获得10
7秒前
余小琴完成签到 ,获得积分10
7秒前
慕青应助无奈的黑猫采纳,获得10
7秒前
Youngyoung完成签到,获得积分10
7秒前
bkagyin应助yqy1234采纳,获得10
7秒前
东东完成签到,获得积分10
8秒前
8秒前
charles发布了新的文献求助10
9秒前
cyfmlt发布了新的文献求助10
9秒前
10秒前
嘿哈发布了新的文献求助10
10秒前
yuki完成签到,获得积分10
10秒前
无限的可乐应助小红采纳,获得10
10秒前
希望天下0贩的0应助hu采纳,获得10
10秒前
凉凉应助养乐多采纳,获得10
10秒前
10秒前
elle发布了新的文献求助10
11秒前
满意黑夜完成签到,获得积分10
14秒前
14秒前
CL完成签到,获得积分10
14秒前
14秒前
英俊的铭应助李奥采纳,获得10
15秒前
ding应助elle采纳,获得10
15秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Social Research Methods (4th Edition) by Maggie Walter (2019) 2390
A new approach to the extrapolation of accelerated life test data 1000
北师大毕业论文 基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 390
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Robot-supported joining of reinforcement textiles with one-sided sewing heads 360
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4010081
求助须知:如何正确求助?哪些是违规求助? 3550086
关于积分的说明 11304770
捐赠科研通 3284597
什么是DOI,文献DOI怎么找? 1810722
邀请新用户注册赠送积分活动 886535
科研通“疑难数据库(出版商)”最低求助积分说明 811451