Lesser M, Fung K, Almenoff PL, Rosenbaum C, Cardozo C. Hydrolysis of N-formylmethionyl chemotactic peptides by endopeptidase 24.11 and endopeptidase 24.15.
Peptides 1996;
17:13-6. [PMID:
8822504 DOI:
10.1016/0196-9781(95)02061-6]
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Abstract
Endopeptidase 24.11 (EP 24.11), a membrane-bound cell surface enzyme, modulates chemotactic responsiveness of neutrophils to f-Met-Leu-Phe. It is unknown if the enzyme degrades potent formylmethionyl tetrapeptides or if an enzyme with similar activities, endopeptidase 24.15 (EP 24.15), degrades formylated chemotactic peptides. In a study of five formylmethionyl tetrapeptides and f-Met-Leu-Phe, we found that EP 24.11 had high affinity for all peptides evaluated, although it did not effectively degrade f-Met-Ile-Leu-Phe. EP 24.15 had high affinity for three of the tetrapeptides, and for f-Met-Leu-Phe, although, for unclear reasons, it did not degrade f-Met-Ile-Leu-Phe or f-Met-Leu-Phe, the apparent natural products of Staphylococcus aureus and Escherichia coli, respectively.
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