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《vicrk_yycfg_双组分调节系统_郑继平》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、ISSN1007-7626中国生物化学与分子生物学报2010年3月CN11-3870/QChineseJournalofBiochemistryandMolecularBiology26(3):215~223·综述·VicRK(YycFG)双组分调节系统1),2)*2),3)1)郑继平,郭桂英,林丛1)2)(海南大学农学院,海口570228;海南大学热带生物资源教育部重点实验室,海口570228;3)海南大学教务处,海口570228)摘要细菌双组分调节系统,或称之为双组分信号转导系统,是细菌感应外界多变环境,维持自身存活和生长繁衍的重要感应系统.在这些调节系统中,最早发现于枯草芽孢杆菌
2、的VicRK(YycFG)系统因与细胞存活密切相关而倍受关注.该系统存在于少数低G+C含量的革兰氏阳性菌中,包括金黄色葡萄球菌和肺炎链球菌等致病菌,高度保守.许多证据显示,VicRK(YycFG)具有调控细胞壁合成与代谢、胞膜完整、细胞分裂、脂类代谢、多糖合成与被膜形成以及细菌毒力等多种功能,参与细胞的生长、分裂与感染.该系统异常可导致细菌生活力严重下降,甚至死亡,因而成为防治该类病原菌的重要靶标.关键词双组分调节系统;VicRK(YycFG);病原菌防治中图分类号Q933VicRK(YycFG)Two-ComponentRegulatorySystem1),2)*2),3)1)ZHE
3、NGJi-Ping,GUOGui-Ying,LINCong1)(CollegeofAgriculture,HainanUniversity,Haikou570228,China;2)KeyLaboratoryofTropicalBiologicalResources,MinistryofEducation,HainanUniversity,Haikou570228,China;3)AcademicAffairsOffice,HainanUniversity,Haikou570228,China)AbstractBacterialtwo-componentsystems,alsorefe
4、rredtoastwocomponentsignaltransductionsystems,arerecognizedasaubiquitousmechanismensuringthesurvivalandprosperityofabacteriumunderawidevarietyofenvironmentalconditions.Oftheindividualtwo-componentregulatorysystems,theVicRK(YycFG),originallyidentifiedinBacillussubtilis,hasexcitedinterestasessenti
5、altwo-componentsystemsforcellgrowth,celldivisionandinfection.Theessentialityhasbeenreportedtoitscontrolofcellwallbiosynthesisandmetabolism,cellmembraneintegrity,celldivision,lipidintegrity,exopolysaccharidebiosynthesisandbiofilmformation,andvirulencefactorexpression.Recentlymanystudieshaveshownt
6、hatevensmallchangeofwhichmaycauseasignificantdeclineincellvirulenceandviability,eventodeath.BecauseoftheseeffectsonessentialfunctionsandthefactthattheYycFGtwo-componentregulatorysystemishighlyconservedinlowG+Cgram-positivebacteria,includingseveralmajorpathogens,forexampleStaphylococcusaureusandS
7、treptococcusPneumoniae,VicRK(YycFG)hasbeenconsideredahopefulpotentialtargetforanti-infectivetherapeutics.Keywordstwo-componentsystem;VicRK(YycFG);pathogentherapy收稿日期:2009-10-08;接受日期:2009-11-09教育部科学技术研究重点项目(No.208111),海南省自然科学
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