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. 1979 Dec;26(3):996-9.
doi: 10.1128/iai.26.3.996-999.1979.

Cytotaxin receptors of neutrophils: evidence that F-methionyl peptides and pepstatin share a common receptor

R D Nelson, S K Ackerman, V D Fiegel, M P Bauman, S D Douglas

Cytotaxin receptors of neutrophils: evidence that F-methionyl peptides and pepstatin share a common receptor

R D Nelson et al. Infect Immun. 1979 Dec.

Abstract

Pepstatin, a chemotactic microbial pentapeptide, competes with f-Met-Leu-[3H]Phe for binding to human neutrophils. Furthermore, porcine neutrophils, which neither specifically bind nor respond chemotactically to the synthetic f-methionyl peptides, also fail to respond chemotactically to pepstatin. These results suggest that pepstatin shares a receptor on the neutrophil with f-methionyl peptides, despite their completely different amino acid compositions. The specificity of this cytotaxin receptor may therefore be broader than expected and depend on ligand characteristics distinct from primary structure.

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