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| Methanopyrus kandleri | |
|---|---|
| Name | Methanopyrus kandleri |
| Domain | Archaea |
| Regnum | Euryarchaeota |
| Phylum | Euryarchaeota |
| Classis | Methanopyri |
| Ordo | Methanopyrales |
| Familia | Methanopyraceae |
| Genus | Methanopyrus |
| Species | M. kandleri |
Methanopyrus kandleri is a hyperthermophilic archaeon originally isolated from a deep-sea hydrothermal vent near the East Pacific Rise. First described following expeditions that involved researchers from institutions such as the Woods Hole Oceanographic Institution and Scripps Institution of Oceanography, it is noted for growth at temperatures exceeding boiling point and for being among the most thermophilic known organisms. Its discovery and characterization influenced studies at laboratories affiliated with the Max Planck Society and the National Aeronautics and Space Administration.
Isolated during geobiological surveys associated with the East Pacific Rise and sampled by research vessels including RV Atlantis and RV Knorr, the organism was formally described in papers authored by teams linked to the Carnegie Institution and the University of California. Taxonomically placed in the phylum Euryarchaeota, its classification was debated in systematic studies by groups at the American Society for Microbiology and the International Committee on Systematics of Prokaryotes. The initial strain designation and naming followed conventions used in proposals submitted to the International Journal of Systematic and Evolutionary Microbiology and referenced culture collections such as the DSMZ and ATCC.
Cells of the species are small, rod-shaped, and lack a traditional peptidoglycan cell wall; ultrastructural work employing methods from the European Molecular Biology Laboratory and the Cold Spring Harbor Laboratory revealed unique membrane and S-layer features. Physiological experiments carried out at the Marine Biological Laboratory and the Pasteur Institute demonstrated obligate anaerobic metabolism, growth requirements studied using techniques from the National Institutes of Health and the Wellcome Sanger Institute, and sensitivity profiles compared with organisms characterized at the Lawrence Berkeley National Laboratory. Studies referenced methodological standards from the Royal Society and the American Chemical Society.
Genome sequencing projects undertaken with support from the Joint Genome Institute and the Broad Institute produced a circular genome assembly analyzed by computational groups at Stanford University and the University of Cambridge. Genomic analyses identified genes encoding reverse gyrase and other thermostability-associated proteins, with comparative genomics informed by datasets from the European Bioinformatics Institute and the National Center for Biotechnology Information. Molecular biology of transcription and translation in this archaeon was contextualized using frameworks developed at Cold Spring Harbor Laboratory and the Max Planck Institute for Molecular Genetics, and proteomic investigations involved facilities such as the Proteome Research Center and the Max Delbrück Center.
Metabolic reconstructions, discussed in reviews appearing in journals edited by the American Society for Biochemistry and Molecular Biology and the Royal Society of Chemistry, indicate hydrogenotrophic methanogenesis as the primary energy-yielding pathway. Enzymatic systems including methyl-coenzyme M reductase and associated cofactors were characterized using methods from the European Molecular Biology Organization and the German Research Foundation-funded laboratories. Biochemical assays were compared with metabolic models developed at the California Institute of Technology and the Massachusetts Institute of Technology to place its methanogenesis within the broader context of archaeal bioenergetics studied at institutions such as Rockefeller University.
Native to hydrothermal vent fields comparable to those explored by the Monterey Bay Aquarium Research Institute and the Schmidt Ocean Institute, the species occupies niches alongside thermophiles studied at the Institute of Oceanology and the National Oceanography Centre. Its distribution was contextualized by oceanographic surveys supported by the National Science Foundation and by collaborations involving the Smithsonian Institution and the Natural History Museum, with ecological interactions contrasted against communities described in publications from the Scripps Institution of Oceanography and the University of Washington.
Adaptations enabling survival at temperatures above 100 °C were elucidated by structural biology efforts at the European Molecular Biology Laboratory and cryo-electron microscopy centers at the Howard Hughes Medical Institute. Features such as thermostable enzymes, specialized chaperonins, and reverse gyrase were investigated in research programs funded by the Wellcome Trust and the National Science Foundation. Comparative studies referenced thermophiles characterized at the University of Tokyo and the Chinese Academy of Sciences to highlight convergent molecular strategies for life in (and near) supercritical conditions encountered at hydrothermal vents.
Thermostable enzymes and molecular systems from the organism have attracted interest from biotechnology firms and research centers including the European Molecular Biology Laboratory protein engineering groups and industrial research at companies collaborating with the Max Planck Society. Potential applications span high-temperature biocatalysis evaluated at the Fraunhofer Institute and synthetic biology platforms developed at the Wyss Institute and the Broad Institute. The organism also informs astrobiology research at NASA's Jet Propulsion Laboratory and exobiology programs at the SETI Institute, contributing to models of life under extreme planetary conditions explored by the European Space Agency and the Russian Academy of Sciences.
Category:Archaea Category:Thermophiles Category:Methanogens