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Functional half-life of the alpha-amylase mRNA of Bacillus licheniformis

✍ Scribed by Alexandra Tonkova; Jarmila Pazlarová; Elka Emanuilova; Nelly Stoeva

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
355 KB
Volume
29
Category
Article
ISSN
0233-111X

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✦ Synopsis

Some aspects of the regulation of a-amylase synthesis in Bacillus licheniformis CCM 2205 were investigated. The effect of actinomycin D and chloramphenicol was studied at the level of RNA transcription and translation. a-amylase synthesis in Bacillus licheniformis CCM 2205 was practically not altered during the first 20 min after the addition of actinomycin D, although RNA synthesis was almost completely blocked. In contrast to RNA polymerase inhibitor, chloramphenicol stopped immediately the synthesis of a-amylase. By using the least squares method the mean half-life of a-amylase mRNA was calculated to range from 7.5 to 8.4 min. The mean half-life of cell protein mRNA was determined to range from 2.6 to 3.8 min. Having in mind the immediate effect of chloramphenicol on the a-amylase synthesis, it can be concluded that de novo protein synthesis is required in the case of actinomycin D resistant residual synthesis.

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