生物技术进展生物技术进展2023年第13卷第1期46~54CurrentBiotechnologyISSN2095-2341■■■■■■■■■■■■进展评述进展评述ReviewsPET水解酶传统与智能分子设计研究进展苗瑞菊1,2,丁尊丹2,田健2,张红兵1*,关菲菲2*1.河北经贸大学生物科学与工程学院,石家庄050061;2.中国农业科学院生物技术研究所,北京100081摘要:塑料由于其耐久性和耐降解性造成的环境污染日趋严重,而塑料废弃物的处理回收方法存在着缺陷。聚对苯二甲酸乙二醇酯(polyethyleneterephthalate,PET)是应用最广泛的塑料类型之一,但在自然条件下很难被降解。近年来,虽然多种具有PET降解活性的酶被发现,但这些酶的催化活性和热稳定性难以支撑实际工业所需,因此提高PET水解酶的降解能力已成为研究热点而备受关注。脂肪酶、角质酶、IsPETase和IsMHETase是目前研究最为广泛的PET水解酶,就这几种酶的结构、活性特征进行了总结,重点阐述了传统蛋白质工程和人工智能分子设计在增强PET水解酶应用性能方面的研究进展。期望塑料降解酶可以进一步发展优化,为循环塑料经济做出有价值的贡献。关键词:PET水解酶;蛋白质工程;智能分子设计;机器学习DOI:10.19586/j.2095⁃2341.2022.0160中图分类号:Q55,TQ321.4文献标志码:AResearchAdvancesonTraditionalandIntelligentMolecularDesignofPETHydrolasesMIAORuiju1,2,DINGZundan2,TIANJian2,ZHANGHongbing1*,GUANFeifei2*1.CollegeofBioscienceandEngineering,HebeiUniversityofEconomicsandBusiness,Shijiazhuang050061,China;2.BiotechnologyResearchInstitute,ChineseAcademyofAgriculturalSciences,Beijing100081,ChinaAbstract:Environmentalpollutioncausedbyplasticisbecomingmoreandmoreseriousduetoitsdurabilityanddegradationresistance,andtherearedefectsinthetreatmentandrecyclingmethodsofplasticwaste.Polyethyleneterephthalate(PET)isoneofthemostwidelyusedtypesofplastic,butitisdifficulttodegradeundernaturalconditions.Inrecentyears,althoughavarietyofenzymeswithPETdegradationactivitieshavebeendiscovered,thecatalyticactivityandthermalstabilityoftheseenzymesaredifficulttosupportpracticalindustrialneeds.Therefore,improvingthedegradationabilityofPEThydrolasehasbecomearesearchhotspotandhasreceivedattention.Lipase,cutinase,IsPETaseandIsMHETaseareth...