Open AccessThe heat shock response in meso‐ and thermoacidophilic chemolithotrophic bacteria
Author(s) -
Jerez Carlos A.
Publication year - 1988
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.1574-6968.1988.tb03194.x
Subject(s) - sulfolobus acidocaldarius , bacteria , shock (circulatory) , heat shock , heat shock protein , thiobacillus , sulfolobus , biology , ethanol , biochemistry , thiobacillus ferrooxidans , microbiology and biotechnology , biophysics , chemistry , archaea , medicine , genetics , gene
The heat shock response was studied in a chemolithotrophic thermoacidophilic archaebacterium Sulfolobus acidocaldarius (shifted from 70° to 85°C) and a mesoacidop0ilic microorganism Thiobacillus ferrooxidans (from 30° to 41°C). When transferred from their normal growth temperature to the stress temperature, cells showed a decrease in the incorporation of Na 2 14 CO 3 into proteins, and at the same time, the synthesis of a specific subset of heat shock proteins was observed. Ethanol (4%) at 30°C, also caused a response similar to the heat shock upon T. ferrooxidans cells, whereas Sulfolobus cells at 70°C did not incorporate radioactive CO 2 in the presence of ethanol, apparently being damaged by the organic solvent.