DNA Sequence of Xylose Isomerase Gene from Streptomyces diastaticus No. 7 Strain M1033
7号淀粉酶链霉菌M1033木糖异构酶基因序列分析

The DNA sequence of the xylose isomerase gene from Streptomyces di-astaticus No. 7 strain M1033 in Heinan province has been determined. The structure gene of the enzyme is composed of 1161bp and is corresponding to 387 amino acid residues. The GC content of the gene sequence is 72. 1 %. The probability of GC on third position of the codon is 98%. At the level of amino acid,the xylose isomerase display high homol-ogy with those from other Actinomycets strains, particularly those from three Streptomyces strains.