Open AccessThermotolerance of adenylylsulfate reductase from Thiobacillus denitrificans
Author(s) -
Taylor Barrie F.
Publication year - 1989
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1989.tb03137.x
Subject(s) - thermophile , thiobacillus , biochemistry , reductase , eubacterium , mesophile , sulfur metabolism , biology , paracoccus denitrificans , sulfur , microbiology and biotechnology , enzyme , bacteria , chemistry , genetics , organic chemistry
Adenylylsulfate (APS) and APS reductase are important in the energy‐generating processes of sulfate‐reducing bacteria and sulfur lithotrophs (phototrophs and nonphototrophs). APS reductase from an extremely thermophilic archaebacterial sulfate‐reducer was recently shown to be thermophilic with optimal activity at 85°C (Speich and Truper (1988) J. Gen. Microbiol. 134, 1419–1425). APS reductase of Thiobacillus denitrificans , a mesophilic eubacterium, has biochemical and physical properties in common with the thermophilic enzyme and is also thermotolerant (up to 75°C). APS reductase and other enzymes of dissimilative inorganic sulfur metabolism may commonly be thermotolerant is mesophilic eubacteria; perhaps a vestige of their primordial significance.