Journal of Experimental Medicine, Vol 141, 1470-1475, Copyright © 1975 by Rockefeller University Press
Antigenic heterogeneity of gonococcal pili
TM Buchanan
Pili were isolated from two different strains of gonococci (33 and 2686)
and demonstrated to be pure by the criteria of electron microscopy and
polyacrylamide gel electrophoresis in sodium dodecyl sulfate. Each purified
pili preparation was studied for its ability to inhibit; (a) binding of
124-I-labeled purified 2686 pili by antibody to 2686 pili, and (b) binding
of 125-I-labeled purified 33 pili by antibody to 33 pili. In each instance
progressive inhibition of binding was produced by homologous pili type, but
no significant inhibition was observed using comparable weights of the
heterologous pili type. These results indicate that the pili of strains
2686 and 33 are antigenically different.