Cloning of Xanthomonas DNA that expresses d-xylose catabolic enzymes
A gene bank of the d-xylose utilizing, cellulolytic Xanthomonas (XA1-1) DNA, inserted into the Hind III site of pKT230, was screened for clones which encoded d-xylose isomerase. One clone (pND70) was identified which complemented d-xylose isomerase negative mutants of Escherichia coli and this clone...
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Veröffentlicht in: | Journal of biotechnology 1987, Vol.6 (2), p.159-165 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A gene bank of the
d-xylose utilizing, cellulolytic
Xanthomonas (XA1-1) DNA, inserted into the
Hind III site of pKT230, was screened for clones which encoded
d-xylose isomerase. One clone (pND70) was identified which complemented
d-xylose isomerase negative mutants of
Escherichia coli and this clone contained an insert of XA1-1 DNA of approximately 15 kb. Enzyme assays showed that pND70 appeared to encode
d-xylose permease, and xylulose kinase in addition to
d-xylose isomerase. Specific activities of all 3 enzymes from
E. coli JA200 (pND70) grown in
d-xylose were double those detected in XA1-1 when also grown on
d-xylose. |
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ISSN: | 0168-1656 1873-4863 |
DOI: | 10.1016/0168-1656(87)90053-8 |