ArticleFrontiers in microbiology2012
Electron tomography of the nucleoid of Gemmata obscuriglobus reveals complex liquid crystalline cholesteric structure.
Article in Frontiers in microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Bacterial nucleoid is a riddle wrapped in a mystery inside an enigma.Journal of bacteriology · 2024Review
- The Subcellular Proteome of a Planctomycetes Bacterium Shows That Newly Evolved Proteins Have Distinct Fractionation Patterns.Frontiers in microbiology · 2021Article
- Chromosomal Organization and Regulation of Genetic Function inEcoSal Plus · 2020Article
- Global and Targeted Lipid Analysis of Gemmata obscuriglobus Reveals the Presence of Lipopolysaccharide, a Signature of the Classical Gram-Negative Outer Membrane.Journal of bacteriology · 2016Article
- Spatially segregated transcription and translation in cells of the endomembrane-containing bacterium Gemmata obscuriglobus.Proceedings of the National Academy of Sciences of the United States of America · 2014Article
- A new addition to the cell plan of anammox bacteria: "Candidatus Kuenenia stuttgartiensis" has a protein surface layer as the outermost layer of the cell.Journal of bacteriology · 2014Article
- Structural studies of planctomycete Gemmata obscuriglobus support cell compartmentalisation in a bacterium.PloS one · 2014Article
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Authors and funding
5 authors.
Funding
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Abstract
The nucleoid of the planctomycete Gemmata obscuriglobus is unique within the Bacteria in being both highly condensed and enclosed by a double-membrane nuclear envelope, seemingly analogous to the nucleus of eukaryotes. Here we have applied electron tomography to study high-pressure frozen, cryosubstituted cells of G. obscuriglobus and found multiple nested orders of DNA organization within the condensed nucleoid structure. Detailed examination of the nucleoid revealed a series of nested arcs characteristic of liquid crystalline cholesteric DNA structure. The finest fibers were arranged in parallel concentrically in a double-twist organization. At the highest order of nucleoid organization, several of these structures come together to form the core of the G. obscuriglobus nucleoid. The complex structure of DNA within this nucleoid may have implications for understanding the evolutionary significance of compartmentalized planctomycete cells.
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