首页> 外文期刊>Plasmid: An International Journal Devoted to Extrachromosomal Gene Systems >Isolation and sequence analysis of a small cryptic plasmid pRK10 from a corrosion inhibitor degrading strain Serratia marcescens ACE2.
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Isolation and sequence analysis of a small cryptic plasmid pRK10 from a corrosion inhibitor degrading strain Serratia marcescens ACE2.

机译:来自腐蚀抑制剂降解菌株粘质沙雷氏菌ACE2的小型隐性质粒pRK10的分离和序列分析。

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摘要

The nucleotide sequence of a smallest cryptic plasmid pRK10 of Serratia marcescens ACE2 was determined. When compared to the all other plasmids reported so far from S. marcescens in sizes of over 70kb, pRK10 is only 4241bp long with 53% G+C content and has five coding sequences representing a coding percentage of 65.41. This small plasmid consists of one Tdh gene, four mobilization genes, mobCABD, and an origin of replication homologous to those of ColE1-type plasmids. Analysis of the five open reading frames identified on the plasmid suggests the presence of genes involved in replication and mobilization containing sequences homologous to the bom region and mobCABD genes of ColE1 and Tdh from Acinetobacter baumannii str. AYE. Results also indicate that pRK10 does not encode any gene for antibiotic/heavy metal resistance. Copy number and incompatibility of the plasmid with plasmids of ColE1 origin of replication was determined and it is quite stable in its natural host as well as in Escherichia coli DH5alpha. This relatively small plasmid will be useful for construction of shuttle vectors to facilitate the genetic analysis.
机译:测定了粘质沙雷氏菌ACE2的最小隐性质粒pRK10的核苷酸序列。当与迄今报道的距离marcescens S. marcescens的所有其他质粒进行比较时,pRK10的长度仅为4241bp,G + C含量为53%,并且有五个编码序列,代表编码百分比为65.41。这个小质粒由一个Tdh基因,四个动员基因,mobCABD和与ColE1型质粒同源的复制起点组成。对在质粒上鉴定的五个开放阅读框的分析表明,存在与复制和动员有关的基因,该基因包含与鲍曼不动杆菌的ColE1和Tdh的bom区和mobCABD基因同源的序列。好的结果还表明,pRK10不编码任何抗生素/重金属抗性基因。确定了质粒的拷贝数和与ColE1复制起点质粒的不相容性,并且在其天然宿主以及大肠杆菌DH5alpha中非常稳定。该相对较小的质粒将用于构建穿梭载体以促进遗传分析。

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