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-Structure paper
タイトル | Previously uncharacterized rectangular bacterial structures in the dolphin mouth. |
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ジャーナル・号・ページ | Nat Commun, Vol. 14, Issue 1, Page 2098, Year 2023 |
掲載日 | 2023年4月13日 |
![]() | Natasha K Dudek / Jesus G Galaz-Montoya / Handuo Shi / Megan Mayer / Cristina Danita / Arianna I Celis / Tobias Viehboeck / Gong-Her Wu / Barry Behr / Silvia Bulgheresi / Kerwyn Casey Huang / Wah Chiu / David A Relman / ![]() ![]() |
PubMed 要旨 | Much remains to be explored regarding the diversity of uncultured, host-associated microbes. Here, we describe rectangular bacterial structures (RBSs) in the mouths of bottlenose dolphins. DNA ...Much remains to be explored regarding the diversity of uncultured, host-associated microbes. Here, we describe rectangular bacterial structures (RBSs) in the mouths of bottlenose dolphins. DNA staining revealed multiple paired bands within RBSs, suggesting the presence of cells dividing along the longitudinal axis. Cryogenic transmission electron microscopy and tomography showed parallel membrane-bound segments that are likely cells, encapsulated by an S-layer-like periodic surface covering. RBSs displayed unusual pilus-like appendages with bundles of threads splayed at the tips. We present multiple lines of evidence, including genomic DNA sequencing of micromanipulated RBSs, 16S rRNA gene sequencing, and fluorescence in situ hybridization, suggesting that RBSs are bacterial and distinct from the genera Simonsiella and Conchiformibius (family Neisseriaceae), with which they share similar morphology and division patterning. Our findings highlight the diversity of novel microbial forms and lifestyles that await characterization using tools complementary to genomics such as microscopy. |
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手法 | EM (トモグラフィー) |
構造データ | ![]() EMDB-25419: Previously uncharacterized rectangular bacteria in the dolphin mouth |
由来 |
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