Purification and characterization of sortase, the transpeptidase that cleaves surface proteins of Staphylococcus aureus at the LPXTG motif
Surface proteins of Staphylococcus aureus are linked to the bacterial cell wall by sortase, an enzyme that cleaves polypeptides at the threonine of the LPXTG motif. Surface proteins can be released from staphylococci by treatment with hydroxylamine, resulting in the formation of threonine hydroxamate. Staphylococcal extracts, as well as purified sortase, catalyze the hydroxylaminolysis of peptides bearing an LPXTG motif, a reaction that can be inhibited with sulfhydryl-modifying reagents. Replacement of the single conserved cysteine at position 184 of sortase with alanine abolishes enzyme activity. Thus, sortase appears to catalyze surface-protein anchoring by means of a transpeptidation reaction that captures cleaved polypeptides as thioester enzyme intermediates.
Top-30
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4 publications, 0.78%
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Elsevier
99 publications, 19.26%
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Wiley
79 publications, 15.37%
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59 publications, 11.48%
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Springer Nature
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MDPI
23 publications, 4.47%
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20 publications, 3.89%
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14 publications, 2.72%
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14 publications, 2.72%
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13 publications, 2.53%
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Proceedings of the National Academy of Sciences (PNAS)
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Microbiology Society
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The Royal Society
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- We do not take into account publications without a DOI.
- Statistics recalculated weekly.