A complete library of amino acid alterations at R306 in Streptomyces clavuligerus deacetoxycephalosporin C synthase demonstrates its structural role in the ring-expansion activity.
… The MICHAELIS constants for benzylpenicillin, ampicillin, phenethicillin, 6-aminopenicillanic acid and cephaloridine were determined.<BR>The enzyme showed a broad specificity of the action against both penicillin and cephalosporin derivatives, and the ratio of this activity as penicillinase and cephalosporinase did not change through the purification steps. …
forum Join the Word of the Day Mailing List For webmasters TheFreeDictionary Google Bing? Word / Article Starts with Ends with Text ... pheneticillin pheneticillin A type of penicillin little used in clinical practice. phenethicillin a ...