Plasmid-encoded lysine decarboxylation in Proteus morganii
نویسندگان
چکیده
منابع مشابه
Bacteriophage typing of Proteus mirabilis, Proteus vulgaris, and Proteus morganii.
A bacteriphage typing scheme for differentiating Proteus isolated from clinical specimens was developed. Twenty-one distinct patterns of lysis were seen when 15 bacteriophages isolated on 8 Proteus mirabilis, 1 P. vulgaris, and 1 P. morganii were used to type 162 of 189 (85.7%) P. mirabilis and P. vulgaris isolates. Seven phages isolated on 3 P. morganii were used to type 13 of 19 (68.4%) P. mo...
متن کاملPhysical properties of plasmid Mor174, which determines bacteriocin production in Proteus morganii 174.
Plasmid Mor174 has a molecular weight of 3.6 X 10(6) and a buoyant density of 1.6994 g/cm3. The covalently closed circular form has a sedimentation coefficient of 22S. These are 30 to 40 plasmid copies per genome equivalent, but growth in chloramphenicol results in amplification of the copy number to 600. In Proteus morganii 174, Mor174 coexists with a cryptic plasmid of molecular weight 15.8 X...
متن کاملProperties of cephalosporinase from Proteus morganii.
The cephalosporin beta-lactamase (cephalosporinase) was purified from a strain of Proteus morganii which showed resistance to cephalosporins. The optimal pH was about 8.5, and the optimal temperature was 40 degrees C. The isoelectric point was 8.7 and the molecular weight was estimated to be about 41,000 from sodium dodecyl sulfate-acrylamide gel electrophoresis. The enzyme activity was inhibit...
متن کاملAspartate Decarboxylation Encoded on the Plasmid in the Soy Sauce Lactic Acid Bacterium, Tetragenococcus halophila D10.
Tetragenococcus halophila D10 decarboxylates aspartate to alanine, but T. halophila D10 derivatives generated by a curing treatment could not (Asd(-) derivatives). We observed by electrophoresis three plasmid bands in T. halophila D10; all Asd(-) derivatives lost the largest of these bands. This plasmid, pD1, has two SalI sites. We cloned and sequenced the 10 kb SalI fragment. The DNA sequence ...
متن کاملPurification and properties of beta-lactamase from Proteus morganii.
The cephalosporin beta-lactamase was purified from a strain of Proteus morganii that showed resistance to beta-lactam antibiotics and produced the enzyme constitutively. The purified enzyme preparation gave a single protein band on polyacrylamide gel electrophoresis and consisted of a single polypeptide of molecular weight 38,000 to 40,000 from gel filtration of Sephadex G-100 and sodium dodecy...
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ژورنال
عنوان ژورنال: Journal of Clinical Microbiology
سال: 1981
ISSN: 0095-1137,1098-660X
DOI: 10.1128/jcm.14.4.365-369.1981