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Abstract

A novel, yellow-pigmented actinobacterium was isolated from a small stone collected in Jeju, Republic of Korea. The cells of the organism, designated strain R-Ac013, were Gram-positive, aerobic, non-motile cocci that occurred singly or in pairs. The strain showed growth at 10–37 °C and pH 4.1–11.1, and tolerated 2 % NaCl. On the basis of the 16S rRNA gene sequence, the organism was phylogenetically related to members of the genera (94.6–97.1 % sequence similarity), (96.5 %), (96.4 %), (96.4 %), (96.4 %), (96.1–96.4 %) and (96.2 %). The chemotaxonomic results for the organism were as follows: -diaminopimelic acid as the diagnostic diamino acid in the peptidoglycan, acetyl-type murein, MK-8(H) as the major menaquinone, a DNA G+C content of 74.1 mol%, and a polar lipid profile that comprised diphosphatidylglycerol and phosphatidylinositol. The fatty acid profile consisted of iso- and anteiso-methyl-branched, straight-chain saturated and monounsaturated types, the major components being iso-C, C 8 and iso-C. The combination of the phenotypic and phylogenetic data revealed that this strain represents a novel genus and species of the family , for which the name s gen. nov., sp. nov. is proposed. The type strain is strain R-Ac013 (=KCTC 19200=DSM 18607).

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2007-12-01
2019-10-20
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vol. , part 12, pp. 2794 - 2798

Transmission electron micrograph of cells of strain R-Ac013 ( gen. nov., sp. nov.). [PDF](556 KB)



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