...
首页> 外文期刊>The Journal of Antibiotics: An International Journal >kasT gene of streptomyces kasugaensis M338-M1 encodes a DNA-binding protein which binds to intergenic region of kasU-kasJ in the kasugamycin biosynthesis gene cluster
【24h】

kasT gene of streptomyces kasugaensis M338-M1 encodes a DNA-binding protein which binds to intergenic region of kasU-kasJ in the kasugamycin biosynthesis gene cluster

机译:春日链霉菌M338-M1的kasT基因编码一种DNA结合蛋白,该蛋白与春日霉素生物合成基因簇中的kasU-kasJ基因间区域结合

获取原文
获取原文并翻译 | 示例
           

摘要

We previously reported that a 4.2 kb SacI-EcoRI DNA region from Streptomyces kasugaensis M338-M1,a kasugamycin (KSM) producer,included KSMtransporter genes (kasKLM).As an extension of that study,a 3.7kb PstI-SacI DNA region,located at 1.5approx5.2 kb upstream of kasK,was cloned and sequenced,revealing three complete open reading frames,designated kasT,kasU and kasJ.The kasJ gene encodes a protein (KasJ) with a conserved dinucleotide (FAD)-bindingmotif.Homology search for KasJ showed its similarity to NADH:N-amidino-scyllo-inosamine oxidoreductase (StsB) which is involved in biosynthesis of the streptidine moiety of streptomycin (SM) in S.griseus.The kasT gene encodes a DNA-binding protein (KasT),including a helix-tur-helix motif near the center of the sequence.This protein is similar in structure to a pathway-s-ecific activator protein (StrR) that plays a role in regulating the SM biosynthesis gene clusterof S.griseus.A fusion protein (Trx-KasT) clearly showed DNA binding activity with the inergenic region of kasU-kasJ,suggesting that KasT is a pathway-specific regulator of the KSM biosynthesis gene cluster.
机译:我们以前曾报道过,春日链霉菌(Kasugamycin)生产者春日链霉菌M338-M1的一个4.2 kb SacI-EcoRI DNA区域包括KSMtransporter基因(kasKLM)。作为该研究的延伸,一个3.7kb PstI-SacI DNA区域位于在kasK上游1.5大约5.2 kb处克隆和测序,揭示了三个完整的开放阅读框,分别称为kasT,kasU和kasJ.kasJ基因编码具有保守二核苷酸(FAD)结合基序的蛋白质(KasJ)。 KasJ的表达与NADH:N-ami基-scyllo-肌苷氧化还原酶(StsB)相似,后者参与了链霉菌(S.griseus)中链霉素(SM)的链霉素部分的生物合成.kasT基因编码DNA结合蛋白(KasT) ,在序列中心附近包括一个螺旋-tur-螺旋基序。该蛋白的结构类似于特定于途径的激活蛋白(StrR),在调节S.griseus.A的SM生物合成基因簇中起作用。融合蛋白(Trx-KasT)清楚地显示了DNA结合活性KasU-kasJ的致敏区域,暗示KasT是KSM生物合成基因簇的特定途径调节剂。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号