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http://dx.doi.org/10.5352/JLS.2022.32.3.249

Metabolic Pathways of 1309 Prokaryotic Species in Relation to COGs  

Lee, Dong-Geun (Department of Pharmaceutical Engineering, Silla University)
Kim, Ju-Hui (Department of Green-Chemistry Convergence Engineering, Graduate School, Silla University)
Lee, Sang-Hyeon (Department of Pharmaceutical Engineering, Silla University)
Publication Information
Journal of Life Science / v.32, no.3, 2022 , pp. 249-255 More about this Journal
Abstract
Metabolism is essential for survival and reproduction, and there is a metabolic pathways entry in the clusters of orthologous groups of proteins (COGs) database, updated in 2020. In this study, the metabolic pathways of 1309 prokaryotes were analyzed using COGs. There were 822 COGs associated with 63 metabolic pathways, and the mean for each taxon was between 200.50 (mollicutes) and 527.07 (cyanobacteria) COGs. The metabolic pathway composition ratio (MPCR) was defined as the number of COGs present in one genome in relation to the total number of COGs constituting each metabolic pathway, and the number of pathways with 100% MPCR ranged from 0 to 26 in each prokaryote. Among 1309 species, the 100% MPCR pathways included murein biosynthesis associated with cell wall synthesis (922 species); glycine cleavage (918); and ribosomal 30S subunit synthesis (903). The metabolic pathways with 0% MPCR were those involving photosystem I (1263 species); archaea/vacuolar-type ATP synthase (1028); and Na+-translocation NADH dehydrogenase (976). Depending on the prokaryote, three to 49 metabolic pathways could not be performed at all. The sequence of most highly conserved metabolic pathways was ribosome 30S subunit synthesis (96.1% of 1309 species); murein biosynthesis (86.8%); arginine biosynthesis (80.4%); serine biosynthesis (80.3%); and aminoacyl-tRNA synthesis (82.2%). Protein and cell wall synthesis have been shown to be important metabolic pathways in prokaryotes, and the results of this study of COGs related to such pathways can be utilized in, for example, the development of antibiotics and artificial cells.
Keywords
COG (cluster of orthologous proteins); conservative metabolic pathway; MPCR (metabolic pathway composition ratio); prokaryotes;
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