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Int J Syst Evol Microbiol. 2017 Jun;67(6):1925-1931. doi: 10.1099/ijsem.0.001893. Epub 2017 Jun 20.

Calidifontibacter terrae sp. nov., an actinomycete isolated from soil, with potential applications in cosmetics.

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Department of Life Science, College of Natural Sciences, Kyonggi University, Suwon, Gyeonggi-Do 16227, Republic of Korea.
Innogene, Co., #301 Woolim E-biz Center1, 28, Digital-ro 33-gil, Guro-gu, Seoul 08337, Republic of Korea.
Division of Creative Liberal Arts, Hoseo University, 20 Hoseoro 79 beongil, Baebangeup, Asan, Republic of Korea.


An aerobic, Gram-stain-positive, oxidase- and catalase-positive, non-motile, non-spore-forming, coccoid, creamish-white-coloured bacterium, designated strain R161T, was isolated from soil in Hwaseong, South Korea. The cell-wall peptidoglycan contained glycine, glutamic acid, alanine, aspartic acid, serine and lysine, and whole-cell sugars were galactose, rhamnose, glucose and ribose. Strain R161T showed antibacterial and enzyme inhibitory activities. Phylogenetic analysis based on the 16S rRNA gene sequence revealed that strain R161T formed a lineage within the family Dermacoccaceae, and showed highest sequence similarity with type strains of Calidifontibacter indicus PC IW02T (97.71 % sequence similarity) and Yimella lutea YIM 45900T (97.58 %). The sequence similarity of strain R161T with type strains of members of the genus Dermacoccus was less than 96.5 %. The major menaquinone was MK-8(H4). The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and phosphatidylinositol mannosides. The major cellular fatty acids were iso-C16 : 0, anteiso-C17 : 0, iso-C16 : 1 H, anteiso-C17 : 1ω9c, summed feature 9 (iso-C17 : 1ω9c and/or C16 : 0 10-methyl) and iso-C15 : 0. The DNA G+C content of strain R161T was 73.9 mol%. The DNA-DNA hybridization value between strain R161T and C. indicus JCM 16038T was 52.1 %. On the basis of phenotypic, genotypic, chemotaxonomic and phylogenetic analysis, strain R161T represents a novel species of genus Calidifontibacter, for which the name Calidifontibacter terrae sp. nov. is proposed. The type strain of Calidifontibacter terrae sp. nov. is R161T (=KEMB 9005-404T=KACC 18906T=JCM 31558T).

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