聚合物
甲基丙烯酸酯
单体
脂肪酶
背景(考古学)
化学工程
溶解度
高分子化学
化学
乙二醇
共聚物
PEG比率
材料科学
有机化学
酶
生物
古生物学
工程类
财务
经济
作者
Evan A Bisirri,Thaiesha A. Wright,Daniel K. Schwartz,Joel L. Kaar
出处
期刊:Biomacromolecules
[American Chemical Society]
日期:2023-08-23
卷期号:24 (9): 4033-4041
标识
DOI:10.1021/acs.biomac.3c00396
摘要
Protein-polymer conjugation provides an opportune means to adjust the local environment of proteins and enhance protein stability, performance, and solubility. Although much attention has been focused on tuning protein-polymer interactions, the properties of polymer-modified proteins may also be altered by polymer-polymer interactions. Herein, we sought to better understand the influence of polymer-polymer interactions on Candida rugosa lipase, which was modified with random co-polymers composed of sulfobetaine methacrylate (SBMA) and poly(ethylene glycol) methacrylate (PEGMA). Our findings suggest that there is an apparent activity-stability tradeoff as a function of polymer composition. Specifically, as the ratio of SBMA to PEGMA increased, lipase stability was enhanced, whereas activity decreased. By tuning the monomer ratio, we showed that lipase productivity could be optimized. These findings are discussed in the context of complex enzyme-polymer and polymer-polymer interactions and ultimately may enable more informed conjugate designs and improved enzyme productivity in industrial biotransformations under harsh or extreme conditions.
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