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Crenarchaea

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??)

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Crenarchaea

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  1. Crenarchaea • Sulfur reduction • Sulfur respiration • Sulfur oxidation • Thermoproteus • Sulfolobus • COLD Crenarchaea

  2. Euryarchaea • S metabolizing • Thermococcus • Sulfate reducer • Or heterotroph • Archaeoglobus • F420 • Thermoplasma • Acidophiles (pH0.8) • Coal refuse piles • Wall-less (like??) • Methanogen ancestry • Halophiles • methanogens

  3. 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

  4. 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

  5. Korarchaeota • First found using DNA-based techniques • Yellowstone • Now also Russia, Iceland, NZ (?) • What do they do?

  6. The Nanoarchaea

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