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  • 1
    ISSN: 1573-0972
    Keywords: Glucose isomerase ; protoplast fusion ; Streptomyces ; xylanase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Streptomyces D3, derived from protoplast fusion between Streptomyces cyaneus 190-1 and Streptomyces griseoruber 42-9, has the ability to produce high levels of xylose isomerase when grown on hemicellulosic materials such as xylan as the carbon source. Comparison between the partial nucleotide sequences of the 16S ribosomal RNA genes from S. cyaneus 190-1, S. griseoruber 42-9, and fusant D3 showed that the 16S rRNA gene of fusant D3 was identical to that of S. cyaneus 190-1. Partial sequence analysis of the xylose isomerase genes also indicated that the gene of fusant D3 was identical to that of S. cyaneus 190-1. The partial DNA fragments for the xylanase genes (xlnA and xlnB) of fusant D3 were amplified by PCR, and subjected to Southern hybridization analysis. The results revealed that the xlnB gene of fusant D3 was similar to that of S. cyaneus 190-1, but that the xlnA gene of fusant D3 was similar to that of S. griseoruber 42-9. These results suggest that the majority of the genome of fusant D3 may be derived from S. cyaneus 190-1.
    Type of Medium: Electronic Resource
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