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A novel yellow-pigmented actinobacterium was isolated from seawater collected from Hwasun Beach in Jeju, Republic of Korea. A comparative analysis of the 16S rRNA gene sequence indicated that the organism, designated HFW-26T, was closely related to members of the genus Brevibacterium. As found for other species of the genus Brevibacterium, strain HFW-26T possessed meso-diaminopimelic acid as the diagnostic cell-wall diamino acid, contained MK-8(H2) as the major menaquinone, contained polar lipids that included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and an unknown phospholipid, and had anteiso-C15 : 0 and anteiso-C17 : 0 as the predominant fatty acids. The G+C content of the DNA was 71.4 mol%. The phylogenetically closest relative was Brevibacterium picturae DSM 16132T (99.0 % 16S rRNA gene sequence similarity). However, DNA–DNA hybridization of strain HFW-26T showed 35.1–43.7 % relatedness with respect to B. picturae DSM 16132T. The novel isolate could be clearly distinguished from B. picturae DSM 16132T on the basis of some cultural, physiological and biochemical characteristics. A battery of phenotypic and genetic data obtained in this study suggest that strain HFW-26T represents a novel species of the genus Brevibacterium, for which the name Brevibacterium marinum sp. nov. is proposed. The type strain is HFW-26T (=JBRI 2001T=KCTC 19221T=DSM 18964T).
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International Journal of Systematic and Evolutionary Microbiology vol. 58 , part 2, pp. 500 - 504
Supplementary Fig. S1. Transmission electron micrographs of cells of strain HFW-26 T. [ PDF] 37 KB