Sulfolobus islandicus plasmids pRN1 and pRN2 share distant but common evolutionary ancestry

被引：35

作者：

Keeling, PJ

Klenk, HP

Singh, RK

Schenk, ME

Sensen, CW

Zillig, W

Doolittle, WF

机构：

[1] Dalhousie Univ, Dept Biochem, Halifax, NS B3H 4H7, Canada

[2] Natl Res Council Canada, Inst Marine Biosci, Halifax, NS B3H 3Z1, Canada

[3] Max Planck Inst Biochem, D-82152 Martinsried, Germany

来源：

EXTREMOPHILES | 1998年 / 2卷 / 04期

基金：

英国医学研究理事会;

关键词：

archaebacteria; archaea; Sulfolobus; plasmid; thermophile;

D O I：

10.1007/s007920050083

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The complete sequence of the plasmid pRN2 from the thermoacidophile Sulfolobus islandicus has been determined. The plasmid was found to be circular and 6959bp in length. S. islandicus harbors another endogenous plasmid, pRN1, and comparison of pRN1 and pRN2 revealed that these two plasmids are essentially homologous, although very distantly related. pRN1 and pRN2 share several stretches of highly conserved noncoding DNA and three common open reading frames. Two of these reading frames are likely related to replication, one encoding a large protein with a helicase domain similar to viral helicases, and the other a copy number control protein, CopG.

引用

页码：391 / 393

页数：3

共 14 条

[11] A MULTICOPY PLASMID OF THE EXTREMELY THERMOPHILIC ARCHAEON SULFOLOBUS EFFECTS ITS TRANSFER TO RECIPIENTS BY MATING [J].