研究报告

鼠李糖甲基化相关基因的组合表达调控丁烯基多杀菌素的合成

  • 苏畅 ,
  • 郭超 ,
  • 李新颖 ,
  • 陈霞 ,
  • 庞建 ,
  • 王超 ,
  • 张根林
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  • 1(石河子大学 化学化工学院,化工绿色过程省部共建国家重点实验室培育基地,新疆 石河子,832003)
    2(国家粮食和物资储备局科学研究院,北京,100037)
    3(北京理工大学 化学与化工学院,生物化工研究所,医药分子科学与制剂工程工信部重点实验室,北京,100081)
    4(北京农学院,农业农村部华北都市农业重点实验室,北京,102206)
第一作者:硕士研究生(张根林教授和王超副研究员为共同通信作者,E-mail:zhgl_food@sina.com;wc@ags.ac.cn)

收稿日期: 2024-08-27

  修回日期: 2024-11-26

  网络出版日期: 2025-08-29

基金资助

十四五重点研发计划项目(2023YFA0914700);中央公益性科研院所专项课题(JY2311);工业生物催化教育部重点实验室(清华大学)开放基金资助项目(2023003);国家自然科学青年基金项目(22108153)

The combined expression of rhamnose methylation related genes regulates synthesis of butenyl-spinosyn

  • SU Chang ,
  • GUO Chao ,
  • LI Xinying ,
  • CHEN Xia ,
  • PANG Jian ,
  • WANG Chao ,
  • ZHANG Genlin
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  • 1(School of Chemistry and Chemical Engineering, Shihezi University, State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi 832003, China)
    2(Academy of National Food and Strategic Reserves Administration, Beijing 100037, China)
    3(Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China)
    4(Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China)

Received date: 2024-08-27

  Revised date: 2024-11-26

  Online published: 2025-08-29

摘要

绿色生物杀虫剂丁烯基多杀菌素具有广谱高效的杀虫活性,在农作物生产、粮食贮藏等方面有着极大的应用前景,高生产性能菌株的选育是实现工业化生产的关键所在。在丁烯基多杀菌素生物合成过程中S-腺苷甲硫氨酸(S-adenosylmethionine,SAM)作为甲基供体,在3种不同的O-甲基转移酶作用下对鼠李糖基团进行甲基化修饰,O-甲基转移酶及SAM供给充足,对丁烯基多杀菌素的合成极为重要。该研究通过外源添加SAM发酵实验、内源SAM合酶挖掘与活性表征、metK和O-甲基转移酶基因协同表达来探究鼠李糖甲基化及相关基因对丁烯基多杀菌素合成的影响。结果表明,metK和O-甲基转移酶基因的组合过表达工程菌株发酵验证获得3株高产工程菌株I-1、I-2和H-1,产量分别提高3.17、2.21、1.43倍。菌株I-1中busI和metK1的过表达调控促进了菌株的生长代谢和底物的消耗,从而更高效合成丁烯基多杀菌素。该研究阐明了鼠李糖甲基化相关基因对丁烯基多杀菌素合成的影响,为基因工程改造须糖多孢菌促进目标产物合成提供了参考。

本文引用格式

苏畅 , 郭超 , 李新颖 , 陈霞 , 庞建 , 王超 , 张根林 . 鼠李糖甲基化相关基因的组合表达调控丁烯基多杀菌素的合成[J]. 食品与发酵工业, 2025 , 51(16) : 43 -50 . DOI: 10.13995/j.cnki.11-1802/ts.040863

Abstract

The green biological insecticide butenyl-spinosyn has a broad spectrum and high-efficiency insecticidal activity and has great market prospects in crop production and grain storage, the breeding of strains with high production performance of butenyl-spinosyn is the key to realizing industrial production.In the biosynthesis of butenyl-spinosyn, S-adenosylmethionine (SAM) serves as a methyl donor and methylation rhamnose under the action of three different O-methyltransferases.The adequacy of O-methyltransferase and SAM supply is crucial for butenyl-spinosyn synthesis.Study investigated the impact of rhamnose methylation and related genes on butenyl-spinosyn synthesis by exogenously adding SAM, identifying and characterizing endogenous SAM synthase, metK, and O-methyltransferase gene cooperative expression.Results showed that the combined overexpression of metK and O-methyltransferase genes obtained three high-yielding engineering strains I-1, I-2, and H-1, and the yield was increased by 3.17, 2.21, and 1.43 times, respectively.In strain I-1, the overexpression of busI and metK1 regulated and promoted the strain’s growth metabolism and substrate consumption, thereby synthesizing butenyl-spinosyn more efficiently.The study provides a reference for the genetic engineering modification of Saccharopolyspora pogona to promote the synthesis of target products.

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