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Physiologischer Untersuchungen zur Bildung von Hitzeschockproteinen in Bacillus subtilis

✍ Scribed by Prof. Dr. M. Hecker; A. Richter


Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
849 KB
Volume
27
Category
Article
ISSN
0233-111X

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✦ Synopsis


The protein synthesis pattern was investigated in Bacillus subtilis relA after heat shock. Cells of B. 5ubtili.s relA can produce heat shock proteins a t 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 proteins can be detected (see RICHTER and HECKER 1980 for B. subtilis relA+).

When cells were exposed to high temperature for longer periods before puls-labelling, the increased synthesis rate of several heat shock proteins is maintened but other 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 immediately after the shift.

The function of heat shock proteins will be discussed from a physiological point of view.


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