A pink-pigmented bacterium, designated SW08-7(T) was isolated from the drinking water of a water purifier. Cells were Gram-negative, rod-shaped, strictly aerobic, and non-spore-forming. It grew optimally at 25 degrees C, pH 6 approximately 7. Phylogenese analysis based on 16S rRNA gene sequence showed that strain SW08-7(T) belongs to the genus Methylobacterium. The highest 16S rRNA gene sequence similarities were found to Methylobacterium mesophilicum JCM 2829(T) (96.9%), Methylobacterium brachiatum B0021(T) (96.9%), Methylobacterium phyllosphaerae CBMB27(T) (96.6%), Methylobacterium radiotolerans JCM 2831(T) (96.6%), and Methylobacterium hispanicum GP34(T) (96.5%). DNA-DNA hybridization experiment revealed low-level (28.5%) of DNA-DNA relatedness between strain SW08-7(T) and Methylobacterium hispanicum. The genomic DNA G+C content was 68.9 mol% and the major isoprenoid quinone was Q-10. The major cellular fatty acid of strain SW08-7(T) was C(18:1) omega7c (79.8+/-2.1%). Results of phylogenetic, phenotypic, and biochemical analyses revealed that strain SW08-7(T) could be classified as representing a novel species of genus Methylobacterium, for which the name Methylobacterium dankookense sp. nov. is proposed. The type strain is SW08-7(T) (=KCTC 22512(T) =DSM 22415(1)).
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