Inducibility of benzoate oxidizing cell activities inAcinetobacter calcoaceticusstrain Bs 5 by chlorobenzoates as influenced by the position of chlorine atoms and the inducer concentration
✍ Scribed by Hans H. Reber
- Book ID
- 104787671
- Publisher
- Springer
- Year
- 1982
- Tongue
- English
- Weight
- 238 KB
- Volume
- 15
- Category
- Article
- ISSN
- 1432-0614
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✦ Synopsis
Among four chlorobenzoates tested, only 3-chlorobenzoate and 4chlorobenzoate were capable of inducing benzoate oxidizing cell activities in Acinetobacter calcoaceticus strain Bs 5, whereas 2-chlorobenzoate and 2,6dichlorobenzoate were not. With the monochlorobenzoates, this inducing capability decreased with increasing proximity of the chlorine atom to the carboxyl group, i.e. in the order: 4chlorobenzoate > 3-chlorobenzoate 2-chlorobenzoate. It is therefore supposed that the induction of benzoate oxidizing cell activities is inhibited primarily be sterical influences of the chlorine substituents of the various chlorobenzoates.
With decreasing concentration of 3chlorobenzoate and 4-chlorobenzoate, the induction of benzoate oxidizing cell activities decreased. Below a critical concentration of I ~aM, these activities were no longer detectable in the cells of Acinetobacter calcoaceticus, with the consequence that below this concentration limit, the degradation of 3-chlorobenzoate and 4-chlorobenzoate was no longer possible.