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Physiologischer Untersuchungen zur Bildung von Hitzeschockproteinen in Bacillus subtilis
Author(s) -
Hecker M.,
Richter A.
Publication year - 1987
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.3620270505
Subject(s) - bacillus subtilis , heat shock protein , shock (circulatory) , hsp70 , protein biosynthesis , chemistry , biophysics , heat shock , biochemistry , microbiology and biotechnology , biology , genetics , medicine , bacteria , gene
The protein synthesis pattern was investiged in Bacillus subtilis relA after heat shock. Cells of B. subtilis relA can produce heat shock proteins at 44 °C, 48 °C, 50 °C and 52 °C. At 52 °C growth processes are inhibited because the synthesis of vegetative proteins is dramatically restricted. Under these conditions a relatively pronounced synthesis of heat shock protins can be detected (see RICHTER and EHCKRE 1986 for B. subtilis relA + ). When cells were exposed to hgh temperature for longer poids before puls‐labelling, the increased synthesis rate of several heat shock proteins is maintained but otehr heat shock proteins are synthesized with a reduced intensity. After a temperature‐shift down the accelerated rate of heat shock protein synthesis is drastically reduced imemdiately after the shift. The function of heat shock proteins wil be discussed from a physiological point of view.