Nucleic Acids Research, 1985, Vol. 13, No. 15 5717-5722
© 1985
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Nucleotide sequence of the Bacillus subtilis xylose isomerase gene: extensive homology between the Bacillus and Escherichia coli enzyme
Institut für Mikrobiologie, Universität Düsseldorf, Universitätasstrasse 1 4000 Düsseldorf, FRG
Received March 2, 1985. Revised July 16, 1985. Accepted July 16, 1985.
The xylose Isanerase gene from Bacillus subtilis was cloned from a genomlc BamH1 library by complementation of an isaomeraae defective Eacherichia coli strain as previously described.
The ATG initiation codon is preceded by B Shine-Dalgarnosequence and two hexamers being characteristic for the promoterregion of Bacillus genes. The structural gene consists a of 1320 base pairs, thus coding for a polypeptide chain of 440 amino acids with a molecular weight of 49 680. The polypeptide primary structure shous over 50% homology to that of the E. coli xylose isomerase.
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