The specificity of transcription in vitro of the trp operon of Escherichia coli
โ Scribed by Pannekoek, Hans ;Pouwels, Peter H.
- Publisher
- Springer
- Year
- 1973
- Tongue
- English
- Weight
- 875 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0026-8925
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๐ SIMILAR VOLUMES
Three strong and two minor rpsA promoters were found by nuclease S1 mapping, promoter cloning and in vitro transcription. The longest transcript encodes a protein, located upstream from rpsA with a molecular weight of 25,000. The identity of this protein remains to be established. The other rpsA pro
In vitro synthesis of enzymes of the tryptophan (trp) operon of E. coli was studied in an extract prepared from E. coli, which is programmed with purified DNA from trp transducing phages with mutations that effect the expression of the trp genes in various ways. Our results show that control of tran
A protein fraction, called At (= anti termination) factor, has been isolated from extracts of E. coli and partially purified. The At factor stimulates the synthesis in vitro of anthranilate synthetase, an enzyme encoded by two genes of the tryptophan (trp) operon, but has no effect on the synthesis