Genome Analysis of the Anaerobic Thermohalophilic Bacterium Halothermothrix orenii
Author Information
Author(s): Mavromatis Konstantinos, Ivanova Natalia, Anderson Iain, Lykidis Athanasios, Hooper Sean D., Sun Hui, Kunin Victor, Lapidus Alla, Hugenholtz Philip, Patel Bharat, Kyrpides Nikos C.
Primary Institution: DOE- Joint Genome Institute, Walnut Creek, California, United States of America
Hypothesis
What are the biochemical mechanisms responsible for the adaptation of Halothermothrix orenii to a hot salty environment?
Conclusion
The genome analysis of H. orenii reveals unique adaptations for survival in extreme conditions, combining features of both Gram positive and Gram negative bacteria.
Supporting Evidence
- H. orenii is the first complete genome of a thermohalophilic bacterium.
- The genome consists of one circular chromosome of 2,578,146 bp encoding 2,451 predicted genes.
- Features of both Gram positive and Gram negative bacteria were identified in H. orenii.
- H. orenii can serve as a model organism for studying the evolution of the Gram negative phenotype.
- The amino acid composition of H. orenii proteins suggests adaptations to high temperatures and salinity.
Takeaway
Scientists studied a tiny bacterium that lives in very hot and salty places to understand how it survives and what makes it special.
Methodology
The genome was sequenced using a combination of 3-kb and fosmid libraries and 454 FLX pyrosequencing.
Limitations
The study does not provide experimental evidence for the sporulation capability of H. orenii under stress conditions.
Digital Object Identifier (DOI)
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