|
KMID : 0613820030130030298
|
|
Journal of Life Science
2003 Volume.13 No. 3 p.298 ~ p.307
|
|
|
Genetic Composition Analysis of Marine-Origin Euryarchaeota by using a COG Algorithm
|
|
Lee Dong-Geun
Kim Cheol-Min
Lee Eun-Yeol
Lee Jae-Hwa
|
|
|
Abstract
|
|
|
|
To figure out the conserved genes and newly added genes at each phylogenetic level of Archaea, COG (clusters of orthologous groups of proteins) algorithm was applied. The number of conserved genes within 9 species of Archaea was 340 and that of 8 species of Euryarchaeota was 388. Many of conserved 265 COGs, which are specific to Archaea and absent in Bacteria and S. cerevisiae, were concerned with ’information storage and processing’ (94 COG, 35.5%) and ’metabolism’ (82 COG, 30.9%). COGs related to these functions were assumed as highly conserved and permit peculiar life form to Archaea. It seemed that there was some difference in ’nucleotide transport and metabolism’ and there was little difference in ’information storage and processing’ between Euryarchaeota and Crenarchaeota. Marine-origin Euryarchaeota showed different conserved COGs with terrestrial Euryarchaeota. Conserved COGs, related to carbohydrate transport and metabolism and others, were different between marine- and terrestrial-origin Euryarchaeota. Hence it was assumed that their physiology might be different. This study may help to understand the origin and conserved genes at each phylogenetic level of marine-origin Euryarchaeota and may help in the mining of useful genes in marine Archaea as Manco et al. (Arch. Biochem. Biophy. 373, 182 (2000)).
|
|
|
KEYWORD
|
|
|
clusters of orthologous groups of proteins (COG), conserved gene, Archaea, Euryarchaeota
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|