Tyrosine repressor gene of a bacterium belonging to the genus Erwinia

Abstract

Using as a host Escherichia coli which expresses lactose operon under the control of the promoter/enhancer of tyrosine phenol lyase gene derived from Erwinia herbicola, a DNA fragment coding for tyrosine repressor (tyrR) having an amino acid sequence depicted in SEQ ID NO: 2 in Sequence Listing is obtained from the chromosome gene library of Erwinia herbicola.

Dependencies are inferred from the claim text.