Flavobacteriaceae, are typically isolated from marine environments.
Polaribacter dokdonensis DSW-5, the type strain
of the species, is a Gram-negative bacterium isolated from the
East Sea of Korea. Whole genome shotgun sequencing was
performed with the HiSeq 2000 platform and paired-end reads
were generated at 188-fold coverage. The sequencing reads
were assembled into two contigs with a total length of 3.08
Mb. The genome sequences of DSW-5 contain 2,776 proteincoding
sequences and 41 RNA genes. Comparison of average
nucleotide identities among six available Polaribacteria genomes
including DSW-5 suggested that the DSW-5 genome
is most similar to that of Polaribacter sp. MED152, which is
a proteorhodopsin-containing marine bacterium. A phylogenomic
analysis of the six Polaribacter strains and 245 Flavobacteriaceae
bacteria confirmed a close relationship of the
genus Polaribacter with Tenacibaculum and Kordia. DSW-5’s
genome has a gene encoding proteorhodopsin and genes encoding
85 enzymes belonging to carbohydrate-active enzyme
families and involved in polysaccharide degradation, which
may play important roles in energy metabolism of the bacterium
in the marine ecosystem. With genes for 238 CAZymes
and 203 peptidases, DSW-5 has a relatively high number of
degrading enzymes for its genome size suggesting its characteristics
as a free-living marine heterotroph.
Citations
Citations to this article as recorded by
Complete genome of Polaribacter huanghezhanensis KCTC 32516T isolated from glaciomarine fjord sediment of Svalbard Kyuin Hwang, Hanna Choe, Kyung Mo Kim Marine Genomics.2023; 72: 101068. CrossRef
Microbial Communities Associated with the White Sea Red Algae as a Source of Xylanolytic Microorganisms V. D. Salova, A. M. Kholdina, A. D. Mel’nik, K. S. Zayulina, A. G. El’cheninov, A. A. Klyukina, I. V. Kublanov Микробиология.2023; 92(3): 300. CrossRef
Microbial Communities Associated with the White Sea Red Algae as a Source of Xylanolytic Microorganisms V. D. Salova, A. M. Kholdina, A. D. Melnik, K. S. Zayulina, A. G. Elcheninov, A. A. Klyukina, I. V. Kublanov Microbiology.2023; 92(3): 418. CrossRef
Colwellia maritima sp. nov. and Polaribacter marinus sp. nov., isolated from seawater Sylvia Kristyanto, Jaejoon Jung, Jeong Min Kim, Keunpil Kim, Mi-hwa Lee, Lujiang Hao, Che Ok Jeon
International Journal of Systematic and Evolutionary Microbiology
.2022;[Epub] CrossRef
Description of Polaribacter batillariae sp. nov., Polaribacter cellanae sp. nov., and Polaribacter pectinis sp. nov., novel bacteria isolated from the gut of three types of South Korean shellfish Su-Won Jeong, Jeong Eun Han, June-Young Lee, Ji-Ho Yoo, Do-Yeon Kim, In Chul Jeong, Jee-Won Choi, Yun-Seok Jeong, Jae-Yun Lee, So-Yeon Lee, Euon Jung Tak, Hojun Sung, Hyun Sik Kim, Pil Soo Kim, Dong-Wook Hyun, Jin-Woo Bae Journal of Microbiology.2022; 60(6): 576. CrossRef
Repeated evolutionary transitions of flavobacteria from marine to non‐marine habitats Hao Zhang, Susumu Yoshizawa, Ying Sun, Yongjie Huang, Xiao Chu, José M. González, Jarone Pinhassi, Haiwei Luo Environmental Microbiology.2019; 21(2): 648. CrossRef
Assessment of bacterial communities in skin ulceration in cultured sea cucumber Apostichopus japonicus (Selenka) Yi Yang, Yuchun Li, Zhenlin Liang International Aquatic Research.2018; 10(3): 275. CrossRef
ATP is synthesized by an enzyme that utilizes proton motive force and thus nature creates various proton pumps. The best understood proton pump is bacteriorhodopsin (BR), an outward-directed light-driven proton pump in Halobacterium salinarum. Many archaeal and eubacterial rhodopsins are now known to show similar proton transport activity. Proton pumps must have a specific mechanism to exclude transport in the reverse direction to maintain a proton gradient, and in the case of BR, a highly hydrophobic cytoplasmic domain may constitute such machinery. Although an inward proton pump has neither been created naturally nor artificially, we recently reported that an inward-directed proton transport can be engineered from a bacterial rhodopsin by a single amino acid replacement. Anabaena sensory rhodopsin (ASR) is a photochromic sensor in freshwater cyanobacteria, possessing little proton transport activity. When we replace Asp217 at the cytoplasmic domain (distance ~15 Å from the retinal chromophore) to Glu, ASR is converted into an inward proton transport, driven by absorption of a single photon. FTIR spectra clearly show an increased proton affinity for Glu217, which presumably controls the unusual directionality opposite to normal proton pumps.
Citations
Citations to this article as recorded by
Ion-transporting mechanism in microbial rhodopsins: Mini-review relating to the session 5 at the 19th International Conference on Retinal Proteins Yuji Furutani, Chii-Shen Yang Biophysics and Physicobiology.2023; 20(Supplement): n/a. CrossRef
Bioinformatic analysis of the distribution of inorganic carbon transporters and prospective targets for bioengineering to increase Ci uptake by cyanobacteria Sandeep B. Gaudana, Jan Zarzycki, Vamsi K. Moparthi, Cheryl A. Kerfeld Photosynthesis Research.2015; 126(1): 99. CrossRef
A role of Anabaena sensory rhodopsin transducer (ASRT) in photosensory transduction So Young Kim, Sa Ryong Yoon, SongI Han, Yuna Yun, Kwang‐Hwan Jung Molecular Microbiology.2014; 93(3): 403. CrossRef
The role of protein-bound water molecules in microbial rhodopsins Klaus Gerwert, Erik Freier, Steffen Wolf Biochimica et Biophysica Acta (BBA) - Bioenergetics.2014; 1837(5): 606. CrossRef
Microcompartments and Protein Machines in Prokaryotes Milton H. Saier Jr. Microbial Physiology.2013; 23(4-5): 243. CrossRef
Quantum chemical modeling of rhodopsin mutants displaying switchable colors Federico Melaccio, Nicolas Ferré, Massimo Olivucci Physical Chemistry Chemical Physics.2012; 14(36): 12485. CrossRef
Crystal Structure of the Eukaryotic Light-Driven Proton-Pumping Rhodopsin, Acetabularia Rhodopsin II, from Marine Alga Takashi Wada, Kazumi Shimono, Takashi Kikukawa, Masakatsu Hato, Naoko Shinya, So Young Kim, Tomomi Kimura-Someya, Mikako Shirouzu, Jun Tamogami, Seiji Miyauchi, Kwang-Hwan Jung, Naoki Kamo, Shigeyuki Yokoyama Journal of Molecular Biology.2011; 411(5): 986. CrossRef