Expression of the chemically synthesized coding region for the cytotoxin α‐sarcin in Escherichia coli using a secretion cloning vector
- 1 August 1990
- journal article
- Published by Wiley in European Journal of Biochemistry
- Vol. 192 (1) , 127-131
- https://doi.org/10.1111/j.1432-1033.1990.tb19205.x
Abstract
The coding region for the cytotoxin alpha-sarcin from Aspergillus giganteus has been chemically synthesized by the ligation of 19 overlapping oligodeoxyribonucleotides. An Escherichia coli clone producing the cytotoxin was constructed by inserting the synthesized gene directly downstream to the region coding for the signal peptide of the OmpA protein (a major outer membrane protein of E. coli), using the secretion cloning vector pIN-III-OmpA2. The enzyme encoded by the chemically synthesized gene expressed in E. coli displayed properties identical to those of native alpha-sarcin isolated from A. giganteus with respect to its chemistry, antigenicity and ribonucleolytic activity in qualitative assays.Keywords
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