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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 59, Issue 4

sp. nov., a tyrosinase-producing bacterium isolated from seawater Free

Abstract

An aerobic, gliding, yellow-pigmented bacterium lacking flagella and showing strong tyrosinase activity, designated strain EM41, was isolated from seawater on the eastern coast of Jeju Island in Korea. Growth was observed at 15–35 °C (optimum, 25–30 °C) and at pH 6.5–9.0 (optimum, pH 7.0–8.5). Cells were Gram-negative, negative for flexirubin pigments and catalase- and oxidase-positive. The G+C content of the genomic DNA was 33.5 mol% and the major respiratory quinone was menaquinone-6 (MK-6). Comparative 16S rRNA gene sequence analysis showed that strain EM41 formed a distinct phyletic line within the genus with a 100 % bootstrap value and was most closely related to KMM 3664 (97.0 % sequence similarity). The level of DNA–DNA relatedness between strain EM41 and KMM 3664 was about 17.8 %. On the basis of phenotypic and genotypic data, strain EM41 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is EM41 (=KCTC 22297=DSM 21164).

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2009-04-01
2025-04-30
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Cellulophaga tyrosinoxydans sp. nov., a tyrosinase-producing bacterium isolated from seawater
Int J Syst Evol Microbiol 59, 654 (2009); https://doi.org/10.1099/ijs.0.003210-0
/content/journal/ijsem/10.1099/ijs.0.003210-0
/content/journal/ijsem/10.1099/ijs.0.003210-0
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vol. , part 4, pp. 654 - 657

Transmission electron micrograph showing the general morphology of negatively stained cells of strain EM41 . [ PDF] 175 KB

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