Colicins produced by the Escherichia fergusonii strains closely resemble colicins encoded by Escherichia coli

被引:18
作者
Smajs, D
Karpathy, SE
Smarda, J
Weinstock, GM
机构
[1] Masaryk Univ, Fac Med, Dept Biol, CZ-66243 Brno, Czech Republic
[2] Univ Texas, Sch Med, Dept Microbiol & Mol Genet, Houston, TX USA
[3] Univ Texas, Sch Med, Ctr Study Emerging & Reemerging Pathogens, Houston, TX USA
[4] Baylor Coll Med, Human Genome Sequencing Ctr, Houston, TX 77030 USA
关键词
Col plasmid; colicin; immunity; Escherichia fergusonii;
D O I
10.1016/S0378-1097(02)00468-8
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Plasmid DNA of six Eseherichia fergusonii colicinogenic strains (three producers of colicin E I, two of Ib and one of Ia) was isolated and the colicin-encoding regions of the corresponding Col plasmids were sequenced. Two new variants of colicin El, one of colicin Ib, and one of colicin Ia were identified as well as new variants of the colicin El and colicin Ib immunity proteins and the colicin El lysis polypeptide. The recombinant Escherichia coli producer harboring pColE1 from E. fergusonii strain EF36 (pColE1-EF36) was found to be only partially immune to El colicins produced by two other E. fergusonii strains suggesting that pColE1-EF36 may represent an ancestor ColEl plasmid. (C) 2002 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:259 / 262
页数:4
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