Crenarchaea Sulfur reduction Sulfur respiration Sulfur oxidation Thermoproteus Sulfolobus COLD...
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Transcript of Crenarchaea Sulfur reduction Sulfur respiration Sulfur oxidation Thermoproteus Sulfolobus COLD...
Crenarchaea• Sulfur reduction• Sulfur respiration• Sulfur oxidation• Thermoproteus• Sulfolobus• COLD Crenarchaea
Euryarchaea• S metabolizing
– Thermococcus
• Sulfate reducer– Or heterotroph– Archaeoglobus– F420
• Thermoplasma– Acidophiles (pH0.8)– Coal refuse piles– Wall-less (like??)– Methanogen ancestry
• Halophiles• methanogens
Halophiles
• “red herring” = Halobacterium• 2M NaCl, at least!• Internal salt = external
– Compatible solutes– K+
• Shapes vary- can be odd shapes like squares• Facultative aerobes• As anaerobes, photochemotrophic• Bacteriorhodopsin=light driven proton pump
Methanogens
• Make CH4 from CO2 (some CO, formate, acetate methylamines)
• F420, unique enzymes and cofactors• Oxygen sensitive• Found in soils, animal guts, landfills, oil
deposits, hydrothermal vents• Syntrophy• Hydrogen and early energy sources
Korarchaeota
• First found using DNA-based techniques
• Yellowstone• Now also Russia, Iceland,
NZ (?)• What do they do?
The Nanoarchaea