当前位置: 首页 > 文章 > 刺糖多孢菌鼠李糖和福乐糖胺合成基因的克隆和组装 华中农业大学学报 2012,31 (3) 40-44
Position: Home > Articles > Cloning and reconstitution of rhamose and forosamine biosynthetic gene of Saccharopolyspora spinosa NRRL18395 Journal of Huazhong Agricultural University 2012,31 (3) 40-44

刺糖多孢菌鼠李糖和福乐糖胺合成基因的克隆和组装

作  者:
郭航;白亭丽;陶美凤
单  位:
华中农业大学农业微生物学国家重点实验室
关键词:
刺糖多孢菌;多杀菌素;鼠李糖;福乐糖胺;cosmid文库;原位杂交
摘  要:
鼠李糖和福乐糖胺是多杀菌素生物合成必需的2个脱氧糖结构单元,负责其合成的4种酶的基因(gtt、epi、gdh、kre)与多杀菌素生物合成基因簇并不在一起,而是分散分布在染色体的3个位点上。为克隆到完整的多杀菌素生物合成基因簇,采用构建基因组文库、PCR扩增等手段从刺糖多孢菌NRRL18395染色体分别克隆gtt、epi、gdh和kre基因,并将其克隆组装在同一整合型载体上,以便于构建用于表达多杀菌素糖单元合成基因的表达载体。
译  名:
Cloning and reconstitution of rhamose and forosamine biosynthetic gene of Saccharopolyspora spinosa NRRL18395
作  者:
GUO Hang1 BAI Ting-li1 TAO Mei-feng1,2 1.State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University,Wuhan 430070,China; 2.State Key Laboratory of Microbial Metabolism and School of Life Science and Biotechnology, Shanghai Jiaotong University,Shanghai 200030,China
关键词:
Sacchraropolyspora spinosa;spinosad;rhamnose;forosamine;cosmid library;in situ hybridization
摘  要:
Rhamnose and forosamine are two essential deoxysugars components of spinosad.Four genes involved in the biosynthesis of rhamnose and forosamine,i.e.gtt(encoding NDP-glucose synthase),gdh(encoding NDP-glucose dehydratase),epi(encoding epimerase) and kre(encoding 4′-ketoreductase),are not located together with the spinosad biosynthetic gene cluster,but distributed in 3 scattered loci in the chromosome of Saccharopolyspora spinosa NRRL18395.To get an integral spinosad biosynthetic pathway,the four genes were cloned by constructing a genomic library and PCR amplifying from S.spinosa NRRL18395.The 4 genes were successively assembled into an integrative vector to construct an expression vector for biosynthesis of rhamnose and forosamine in heterologous hosts.

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