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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1994-8-25
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pubmed:abstractText |
Urease from Staphylococcus saprophyticus was purified more than 800-fold by liquid chromatography reaching homogeneity, as shown by isoelectric focussing, at a maximum specific activity of 1979 U/mg. The molecular weight of the native enzyme was 420,000; it consisted of subunits with molecular weights of 72,400 (alpha), 20,400 (beta), 13,900 (gamma) in an estimated (alpha beta gamma)4 stoichiometry. In native gradient polyacrylamide gel electrophoresis urease exhibited a multiple activity band pattern with molecular weights ranging from 420,000 to 100,000. In the native enzyme, 4.09 (+/- 0.25) atoms of nickel per molecule were detected. The N-terminal amino acids of the urease subunits were identical to those from Staphylococcus xylosus, and amino acid analysis revealed high similarities in both enzymes; no cysteine was detected after acid hydrolysis of vinylpyridinylated urease. Electron micrographs of negatively stained urease specimens from both staphylococci showed identical size and structure.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0302-8933
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
161
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
393-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:8042901-Amino Acid Sequence,
pubmed-meshheading:8042901-Microscopy, Electron,
pubmed-meshheading:8042901-Molecular Sequence Data,
pubmed-meshheading:8042901-Nickel,
pubmed-meshheading:8042901-Sequence Homology, Amino Acid,
pubmed-meshheading:8042901-Species Specificity,
pubmed-meshheading:8042901-Staphylococcus,
pubmed-meshheading:8042901-Urease
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pubmed:year |
1994
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pubmed:articleTitle |
Urease from Staphylococcus saprophyticus: purification, characterization and comparison to Staphylococcus xylosus urease.
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pubmed:affiliation |
Lehrstuhl für Mikrobiologie, Universität des Saarlandes, Saarbrücken, Germany.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
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