Journal of Microbiology

Byoung-Jun Yoon

4 Articles

Aquimarina litoralis sp. nov., Isolated from a Coastal Seawater: You-Sung Oh , Hyung-Yeel Kahng , Young Sun Lee , Byoung-Jun Yoon , Sang-Bin Lim , Jae Sung Jung , Duck-Chul Oh , Dong-Heon Lee; J. Microbiol. 2010;48(4):433-437. Published online August 20, 2010; DOI: https://doi.org/10.1007/s12275-010-0088-8

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A strictly aerobic, red-pigmented, non-motile, catalase- and oxidase-positive, Gram-staining-negative bacterium, designated strain CNURIC011T, was isolated from seawater off the coast of Jeju Island in Korea. A phylogenetic analysis based on 16S rRNA gene sequences showed that strain CNURIC011T belongs to the genus Aquimarina in the family Flavobacteriaceae. 16S rRNA gene sequence analysis revealed that the close relatives of the novel strain are Aquimarina latercula ATCC 23177T, Aquimarina marcrocephali JAMB N27T, Aquimarina intermedia KMM 6258T, Aquimarina muelleri KMM 6020T, and Aquimarina brevivitae SMK-19T, with sequence similarities of 97.6, 96.6, 96.0, 95.6, and 94.2%, respectively. DNA-DNA hybridization revealed that the level of relatedness between strain CNURIC011T and Aquimarina latercula ATCC 23177T (=KCTC 2912T) was 4.9%. The DNA G+C content was 35.8 mol% and the major respiratory quinone was MK-6. The major fatty acids were iso-C15:0 (14.9%), C15:0 (13.9%), iso-C17:0 3-OH (12.6%), iso-C15:1 G (7.3%), and iso-C17:1 ω9c (7.2%). On the basis of phenotypic, phylogenetic, and genotypic data, strain CNURIC011T represents a novel species within the genus Aquimarina, for which the name Aquimarina litoralis sp. nov. is proposed. The type strain is CNURIC011T (=KCTC 22614T =JCM 15974T).

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Insights into the Antimicrobial Activities and Metabolomes of Aquimarina (Flavobacteriaceae, Bacteroidetes) Species from the Rare Marine Biosphere
Sandra Godinho Silva, Patrícia Paula, José Paulo da Silva, Dalila Mil-Homens, Miguel Cacho Teixeira, Arsénio Mendes Fialho, Rodrigo Costa, Tina Keller-Costa
Marine Drugs.2022; 20(7): 423. CrossRef
Insights into the genomic repertoire of Aquimarina litoralis CCMR20, a symbiont of coral Mussismilia braziliensis
Tooba Varasteh, Diogo Tschoeke, Gizele Garcia, Arthur Silva Lima, Ana Paula B. Moreira, Cristiane Thompson, Fabiano Thompson
Archives of Microbiology.2021; 203(5): 2743. CrossRef
Aquimarina sp. Associated With a Cuticular Disease of Cultured Larval Palinurid and Scyllarid Lobsters
Mei C. Ooi, Evan F. Goulden, Andrew J. Trotter, Gregory G. Smith, Andrew R. Bridle
Frontiers in Microbiology.2020;[Epub] CrossRef
Comparative genome analysis provides novel insight into the interaction of Aquimarina sp. AD1, BL5 and AD10 with their macroalgal host
Jennifer Hudson, Vipra Kumar, Suhelen Egan
Marine Genomics.2019; 46: 8. CrossRef
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Gaetbulibacter jejuensis sp. nov., Isolated from Seawater: You-Sung Oh , Sang-Bin Lim , Hyung-Yeel Kahng , Byoung-Jun Yoon , Duck-Chul Oh , Jae-Ho Joa , Dong-Heon Lee; J. Microbiol. 2010;48(3):307-311. Published online June 23, 2010; DOI: https://doi.org/10.1007/s12275-010-9232-8

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Abstract PDF

A novel marine bacterium, designated strain CNURIC014T was isolated from coastal seawater of Jeju Island in Korea. Strain CNURIC014T formed yellow colonies on marine agar 2216 and the cells were Gram-negative, non-motile, strictly aerobic, rod-shaped. The temperature, pH and NaCl ranges for growth were 15-37°C, pH 6.0-9.0 and 1.0-7.0% NaCl. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain CNURIC014T was most closely related to Gaetbulibacter marinus and Gaetbulibacter saemankumensis, with a sequence similarity of 95.1% and 94.6%, respectively. The DNA G+C content of the strain was 33.1 mol% and the major respiratory quinone was menaquinone-6. The major cellular fatty acids were iso-C15:1 (22.8%), iso-C15:0 (18.8%), summed feature 3 (iso-C15:0 2-OH/C16:1 ω7c, 12.9%) and iso-C17:0 3-OH (11.5%). On the basis of phenotypic, phylogenetic, and genotypic data, strain CNURIC014T represents a novel species within the genus Geatbulibacter, for which the name Gaetbulibacter jejuensis sp. nov. is proposed. The type strain is CNURIC014T (=KCTC 22615T =JCM 15976T).

Citations

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Validation List no. 222. Valid publication of new names and new combinations effectively published outside the IJSEM
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Genome sequence of Gaetbulibacter sp. PBL-D1 isolated from a Malaysian beach: insights into glycoside hydrolase repertoires
Ummirul Mukminin Kahar, Najiha Atiqah Md Nor, Wan Nur Izrena Wan Izanni
BMC Genomic Data.2025;[Epub] CrossRef
Analysis of components according to different collecting time and production method in sun-dried salt
Yong-Xie Jin, Haeng-Ryan Kim, So-Young Kim
Korean Journal of Food Preservation.2013; 20(6): 791. CrossRef

Purification and Characterization of a Catalase from Photosynthetic Bacterium Rhodospirillum rubrum S1 Grown under Anaerobic Conditions: Yoon-Suk Kang , Dong-Heon Lee , Byoung-Jun Yoon , Duck-Chul Oh; J. Microbiol. 2006;44(2):185-191.; DOI: https://doi.org/2366 [pii]

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Abstract PDF: The photosynthetic bacterium, Rhodospirillum rubrum S1, when grown under anaerobic conditions, generated three different types of catalases. In this study, we purified and characterized the highest molecular weight catalase from the three catalases. The total specific catalase activity of the crude cell extracts was 88 U/mg. After the completion of the final purification step, the specific activity of the purified catalase was 1,256 U/mg. The purified catalase evidenced an estimated molecular mass of 318 kDa, consisting of four identical subunits, each of 79 kDa. The purified enzyme exhibited an apparent Km value of 30.4 mM and a Vmax of 2,564 U against hydrogen peroxide. The enzyme also exhibited a broad optimal pH (5.0~9.0), and remained stable over a broad temperature range (20°C~60°C). It maintained 90% activity against organic solvents (ethanol/chloroform) known hydroperoxidase inhibitors, and exhibited no detectable peroxidase activity. The catalase activity of the purified enzyme was reduced to 19% of full activity as the result of the administration of 10 mM 3-amino-1,2,4-triazole, a heme-containing catalase inhibitor. Sodium cyanide, sodium azide, and hydroxylamine, all of which are known heme protein inhibitors, inhibited catalase activity by 50% at concentrations of 11.5 μM, 0.52 μM, and 0.11 μM, respectively. In accordance with these findings, the enzyme was identified as a type of monofunctional catalase.

Introduction of Saxicolous Lichens Distributed in Coastal Rocks of U-do Islet in Jeju, Korea: Hyung-Yeel Kahng , Byoung-Jun Yoon , Sung-Hyun Kim , Duck-Ja Shin , Jae-Seoun Hur , Hyun-Woo Kim , Eui-Sung Kang , Kye-Heon Oh , Young Jin Koh; J. Microbiol. 2004;42(4):292-298.; DOI: https://doi.org/2108 [pii]

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Abstract PDF: This study reports, for the first time, the ivestigation of the distribution of Korean saxicolous lichens in the coastal rocks of U-do islet, which is known as an unpolluted zone in Jeju. More than thirty lichens were obtained and investigated from the coastal rocks frequently contacted by seawater. A molecular analysis using PCR amplification of the rRNA ITS regions revealed the coastal rock lichens could be placed into 8 families and 14 genera, Ramalinaceae (Bacidia, Ramalina), Physciaceae (Buellia, Dirinaria, Phaeophyscia, Physcia, Pyxine), Lecanoraceae (Candelaria, Lecanora), Parmeliaceae (Xanthoparmelia), Graphidaceae (Graphis), Pertusariaceae (Pertusaria), Rhizocarpaceae (Rhizocarpon), and Teloschistaceae (Caloplaca), showing a diversity of lichens, with foliose (flat leaf-like), crustose (crust-like), and fruticose (miniature shrub-like) life forms might be distributed in the coastal rocks. These findings suggested the possibility that the lichens identified in the present work might be resistant to a salty environment.

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