Univ.Chem.2023,38(4),243–252243收稿:2022-10-04;录用:2022-12-11;网络发表:2023-01-16*通讯作者,Email:huangx513@nju.edu.cn基金资助:国家自然科学基金面上项目(22277053);江苏省自然科学基金青年科学基金项目(BK20220760)•化学实验•doi:10.3866/PKU.DXHX202210002www.dxhx.pku.edu.cn理性改造光脱羧酶并用于反式脂肪酸选择性脱羧反应曾森海,鲍雨妍,曹奡,黄小强*配位化学国家重点实验室,南京大学化学与生物医药创新研究院,南京大学化学化工学院,南京210023摘要:立足光酶催化合成和酶的理性改造等研究前沿,设计了一例光酶催化的反式脂肪酸高选择性脱羧去除实验。具体地,本实验借助分子对接技术,理性设计脂肪酸光脱羧酶CvFAP的突变体V453E-CvFAP,并实验验证该突变体能够选择性地催化反油酸的脱羧反应,从而实现顺式脂肪酸的富集。实验涉及培养细胞、诱导酶表达、提取酶液、设计反应以及产物的定性、定量分析等内容,非常适合在化学生物学实验或综合化学实验课程中开设。关键词:酶的理性改造;脂肪酸光脱羧酶CvFAP;反式脂肪酸;光酶催化;脱羧反应中图分类号:G64;O6RationalEvolutionofaFattyAcidPhotodecarboxylaseforHighlySelectivePhotodecarboxylationoftransFattyAcidSenhaiZeng,YuyanBao,AoCao,XiaoqiangHuang*StateKeyLaboratoryofCoordinationChemistry,ChemistryandBiomedicineInnovationCenter,SchoolofChemistryandChemicalEngineering,NanjingUniversity,Nanjing210023,China.Abstract:Photoenzymaticsynthesisandrationalengineeringofenzymesareamongthemostemergingresearchareas.Herein,ahighlyselectivephotodecarboxylationoftransfattyacidwasachievedbyrationalrepurposingofthephotodecarboxylase.Specifically,viamoleculardocking,amutantofthephotodecarboxylaseCvFAP,namelyV453E-CvFAP,wasrationalydesigned,constructedandsubjectedtothephotoactivateddecarboxylationoffattyacids.Itturnedoutthatthemutantwashighlyselectivetowardselaidicacid,therebyenrichingoleicacid.Experimentaltrainingslikecellsculturing,proteinexpression,reactiondesign,andqualitativeandquantitativeanalysisofproductswereincluded.Theexperimentiseasytoconductandsafeforundergraduatechemistryexperiment.KeyWords:Rationalevolutionofenzyme;PhotodecarboxylaseCvFAP;Transfattyacid;Photobiocatalys...