Activation of human neutrophils by type I collagen. Requirement of two different sequences

Publisher Website
Google Scholar
Abstract
Contact between type I collagen purified from several species and human polymorphonuclear neutrophils (PMNs) triggers the production of O2- by these cells. The activity of collagen is located in the .alpha.1(I)-CB6 cyanogen bromide-cleaved (CB)-peptide, which is the C-terminal CB-peptide of the .alpha.1(I) chain. Experiments based on the competitive inhibition of O2- production by simultaneous incubation of PMNs with type I collagen and synthetic peptides identical to the conserved sequences of this collagen demonstrated that the binding of collagen to PMNs and the subsequent activation of these cells depend on the simultaneous presence of two sequences: Arg-Gly-Asp [residues 915, 916 and 917 of the complete .alpha.1(I) chain, located in the helical part] Asp-Gly-Gly-Arg-Tyr-Tyr (residues 1034-1039, located in the C-terminal non-helical telopeptide).

This publication has 12 references indexed in Scilit: