FEBS Letters | |
The respiratory system of Sulfolobus acidocaldarius, a thermoacidophilic archaebacterium | |
Anemüller, S.1  Schäfer, G.1  Lübben, M.1  | |
[1] Institut für Biochemie, Medizinische Universität zu Lübeck, Ratzebwger Allee 160, D-2400 Lübeck, FRG | |
关键词: Archaebacterium; Thermoacidophile; Electron transport; Oxidative phosphorylation; HOQNO; 2-heptyl-4-hydroxy-quinoline N-oxide; DTNB; 5; 5'-dithiobis-(2-nitrobenzoic acid); BAL; British Anti-Lewisite (2; 3-dimercaptopropanol); EEDQ; N-ethoxycarbonyl-2-ethoxy-1; 2-dihydroxyquinoline; FCCP; carbonyl cyanide p-trifluoro-methoxyphenylhydrazone; 2; 4-DNP; 2; 4-dinitrophenol; | |
DOI : 10.1016/0014-5793(85)80084-3 | |
学科分类:生物化学/生物物理 | |
来源: John Wiley & Sons Ltd. | |
【 摘 要 】
The respiratory properties, cellular ATP content and absorption difference spectra of Sulfolobus acidocaldarius (DSM 639) have been investigated. In contrast to earlier postulates regarding Thermoplasma acidophilum [(1984) Syst. Appl. Microbiol. 5, 30-40], S. acidocaldarius seemed to depend energetically on respiration-coupled phosphorylation. Its ATP content strictly depended on respiratory activity. Its membrane is capable of proton pumping and presumably contains a branched electron transport system. The latter is composed of at least 2 types of cytochromes, an a+- and presumably an o-type, while c-type cytochromes could not be detected. It appears possible that one of the terminal oxidases is directly reduced by the socalled caldariellaquinone, found in the same organism [(1983) Syst. Appl. Microbiol. 4, 295-304].
【 授权许可】
Unknown
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