文献类型：期刊文献

英文题名：Insights into the Phylogeny and Evolution of Cold Shock Proteins: From Enteropathogenic Yersinia and Escherichia coli to Eubacteria

作者：Yu, Tao[1,2];Keto-Timonen, Riikka[2];Jiang, Xiaojie[2];Virtanen, Jussa-Pekka[2];Korkeala, Hannu[2]

第一作者：于涛;Yu, Tao

通讯作者：Yu, T[1];Yu, T[2]

机构：[1]Xinxiang Univ, Dept Life Sci & Technol, Xinxiang 453003, Henan, Peoples R China;[2]Univ Helsinki, Dept Food Hyg & Environm Hlth, POB 66, FI-00014 Helsinki, Finland

第一机构：新乡学院生命科学技术学院

通讯机构：[1]corresponding author), Xinxiang Univ, Dept Life Sci & Technol, Xinxiang 453003, Henan, Peoples R China;[2]corresponding author), Univ Helsinki, Dept Food Hyg & Environm Hlth, POB 66, FI-00014 Helsinki, Finland.|[1107115]新乡学院生命科学技术学院;[11071]新乡学院;

年份：2019

卷号：20

期号：16

外文期刊名：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000484411100216)】；

语种：英文

外文关键词：cold shock protein; enteropathogenic Yersinia; eubacteria; phylogeny; evolution

摘要：Psychrotrophic foodborne pathogens, such as enteropathogenic Yersinia, which are able to survive and multiply at low temperatures, require cold shock proteins (Csps). The Csp superfamily consists of a diverse group of homologous proteins, which have been found throughout the eubacteria. They are related to cold shock tolerance and other cellular processes. Csps are mainly named following the convention of those in Escherichia coli. However, the nomenclature of certain Csps reflects neither their sequences nor functions, which can be confusing. Here, we performed phylogenetic analyses on Csp sequences in psychrotrophic enteropathogenic Yersinia and E. coli. We found that representative Csps in enteropathogenic Yersinia and E. coli can be clustered into six phylogenetic groups. When we extended the analysis to cover Enterobacteriales, the same major groups formed. Moreover, we investigated the evolutionary and structural relationships and the origin time of Csp superfamily members in eubacteria using nucleotide-level comparisons. Csps in eubacteria were classified into five clades and 12 subclades. The most recent common ancestor of Csp genes was estimated to have existed 3585 million years ago, indicating that Csps have been important since the beginning of evolution and have enabled bacterial growth in unfavorable conditions.