Title: Single amino acid substitution between SHV-1 beta-lactamase and cefotaxime-hydrolyzing SHV-2 enzyme. | Journal: FEBS letters. 1988 Apr;231(1):217-20 | Authors: Barthélémy M, Péduzzi J, Ben Yaghlane H, Labia R. | Abstract: SHV-2 beta-lactamase was purified from an overproducing variant of a clinical isolate of Escherichia coli resistant to cefotaxime. Pure protein was digested by trypsin and Lys-C endoproteinase. Proteolytic peptides, isolated by reverse-phase HPLC, were submitted to manual Edman degradation and aligned by homology with the sequence of SHV-1 beta-lactamase. A putative amino acid sequence was deduced. Structural comparison revealed that SHV-2 differed from SHV-1 by only one amino acid, Gly----Ser, at position 213 of the mature protein. | See full PubMed entry: http://www.ncbi.nlm.nih.gov/pubmed/3129309 |
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