Amylooligosaccharides from Mycobacterium smegmatis
نویسندگان
چکیده
منابع مشابه
Amylooligosaccharides from Mycobacterium smegmatis.
In early stationary phase of growth, Mycobacterium smegmatis cultures accumulate amylooligosaccharides (alpha 1 leads to 4-glucooligosaccharides) up to the undecasaccharide. Although M. smegmatis also makes an acylated polymethylpolysaccharide that is predominantly and alpha 1 leads to 4-glucan, we conclude that these oligosaccharides are precursors of glycogen rather than lopopolysaccharide.
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DNA topoisomerase I has been purified from Mycobacterium smegmatis to near homogeneity using different column chromatographic techniques. The enzyme activity relaxes form I DNA into form IV DNA, requiring Mg2+, but not ATP or any other cofactors for its activity. Several properties of the enzyme were found to be similar to that of the prototype enzyme, Escherichia coli topoisomerase I.
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1979
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.139.1.302-304.1979