GENETIC-MAP OF SALMONELLA-TYPHIMURIUM, EDITION-VIII

被引:113
作者
SANDERSON, KE [1 ]
HESSEL, A [1 ]
RUDD, KE [1 ]
机构
[1] NATL LIB MED, NATL CTR BIOTECHNOL INFORMAT, BETHESDA, MD 20894 USA
关键词
D O I
10.1128/MMBR.59.2.241-303.1995
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
We present edition VIII of the genetic map of Salmonella typhimurium LT2. We list a total of 1,159 genes, 1,080 of which have been located on the circular chromosome and 29 of which are on pSLT, the 90-kb plasmid usually found in LT2 lines. The remaining 50 genes are not yet mapped. The coordinate system used in this edition is neither minutes of transfer time in conjugation crosses nor units representing ''phage lengths'' of DNA of the transducing phage P22, as used in earlier editions, but centisomes and kilobases based on physical analysis of the lengths of DNA segments between genes. Some of these lengths have been determined by digestion of DNA by rare-cutting endonucleases and separation of fragments by pulsed-field gel electrophoresis. Other lengths have been determined by analysis of DNA sequences in GenBank. We have constructed StySeq1, which incorporates all Salmonella DNA sequence data known to us. StySeq1 comprises over 548 kb of nonredundant chromosomal genomic sequences, representing 11.4% of the chromosome which is estimated to be just over 4,800 kb in length. Most of these sequences were assigned locations on the chromosome, in some cases by analogy with mapped Escherichia coli sequences.
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页码:241 / 303
页数:63
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