The phylogeny of archaebacteria,including novel anaerobic thermoacidophiles in the light of RNA polymerase structure |
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Authors: | Wolfram Zillig Ralf Schnabel Jenn Tu Karl Otto Stetter |
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Affiliation: | 1. Max-Planck-Institut für Biochemie, D-8033, Martinsried 2. Institut für Biochemie der Universit?t, D-8400, Regensburg
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Abstract: | DNA-dependent RNA polymerases of archaebacteria are distinct from those of eubacteria both in structure and in function. They show similarities to those of the eukaryotic cytoplasm. Extremely thermophilic anaerobic sulfur-respiring archaebacteria isolated from solfataric waters represent four different families, the Thermoproteaceae, the “stiff filaments”, the Desulfurococcaceae and the Thermococcaceae, of a novel order, Thermoproteales. Together with the Sulfolobales, they form the second branch of the urkingdom of the archaebacteria besides that of the methanogens and extreme halophiles. Thermoplasma appears isolated. |
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