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Analysis of Conservative Genes in Thermophilic and Hyperthermophilic Bacteria  

Lee Dong-Geun (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Lee Jae-Hwa (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Ha Bae Jin (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Ha Jong-Myung (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Lee Jung-Hyun (Microbiology Laboratory, Korea Ocean Research and Development Institute)
Kim Sang-Jin (Microbiology Laboratory, Korea Ocean Research and Development Institute)
Lee Sang Hyeon (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Publication Information
KSBB Journal / v.20, no.5, 2005 , pp. 387-391 More about this Journal
Abstract
Totally 16,299 conservative genes, commonly found in 13 thermophilic and hyperthermophilic bacteria, were analyzed. All genes were belong to W 67 COGs (clusters of orthologous groups of proteins). COGs related to protein metabolism were 80 among 167 COGs. Conservative genes were not limited only thermophiles and hyperthermophiles, meaning thermal stability is independent of specific protein. However reverse gyrase was only found in all hyperthermophilic archaebacteria and eubacteria, meaning DNA stability is important in hyperthermophiles. Hyperthermophilic eubacteria and thermophilic archaebacteria had different position between phylogenetic tree of gene content and 165 rRNA gene. Thermophilic archaebacteria hyperthermophilic eubacteria and archaebacteria had similar values by the statistical analysis of distance values with 167 COGs in each organism.
Keywords
Thermophiles; hyperthermophiles; 165 rRNA; gene content tree; COG (clusters of orthologous groups of proteins);
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