© 1996 by Kazusa DNA Research Institute
A 718-kb DNA Sequence of the Escherichia coli K-12 Genome Corresponding to the 12.728.0 min Region on the Linkage Map
1Institute of Medical Science, University of Tokyo 4-6-1 Shiroganedai, Minatoku, Tokyo 108, Japan
2Department of Molecular Biology, School of Science, Nagoya University Furo-cho, Chikusaku, Nagoya 464-01, Japan
3Department of Biology, Faculty of Science, Kobe University 1-1 Rokkodai-cho, Nadaku, Kobe 657, Japan
4National Institute for Basic Biology 38 Nishigonaka, Myodaiji-cho, Okazaki 444, Japan
5Research and Education Center of Gene Technology, Nara Institute of Science and Technology 8916-5 Takayama-cho, Ikoma 630-01, Japan
6Department of Applied Physics and Chemistry, University of Electro-Communications 1-5-1 Chofugaoka, Chofu 182, Japan
7Faculty of Pharmaceutical Sciences, Kyushu University 3-1-1 Maedashi, Higashiku, Fukuoka 812-82, Japan
8Research Institute for Microbial Diseases, Osaka University 3-1 Yamadagaoka, Suita 562, Japan
9Department of BioSciences, Teikyo University 1-1 Toyosatodai, Utsunomiya 320, Japan
10Institute for Virus Research, Kyoto University Kawahara-cho, Shogoin, Sakyoku, Kyoto 606-01, Japan
11Department of Genetics, Hyogo College of Medicine 1-1 Mukogawa-cho, Nishinomiya 663, Japan
* To whom correspondence should be addressed. Tel. +81-564-55-7690, Fax. +81-564-55-7690
The 718,122 base pair (bp) sequence of the Escherichia coli K-12 genome corresponding to the region from 12.7 to 28.0 minutes on the genetic map is described. This region contains at least 682 potential open reading frames, of which 278 (41%) have been previously identified, 147 (22%) were homologous to other known genes, 138 (20%) are identical or similar to the hypothetical genes registered in databases, and the remaining 119 (17%) did not show a significant similarity to any other gene. In this region, we assigned a cluster of cit genes encoding multienzyme citrate lyase, two clusters of fimbrial genes and a set of lysogenic phage genes encoding integrase, excisionase and repressor in the e14 genetic element. In addition, a new valine tRNA gene, designated valZ, and a family of long directly repeated sequences, LDR-A, -B and -C, were found.
Key words: Escherichia coli K12; genome sequence; ORF analysis
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