An 85 kDa antigen from Neisseria meningitidis and Neisseria gonorrhoeae
has been cloned, sequenced and expressed. The antigen is common to
diverse strains, serogroups and serotypes of N. meningitidis, and also to
N. gonorrhoeae, N. polysaccharia and N. lactamica. The protein sequences
of N. meningitidis (serogroups A and B) and N. gonorrhoeae are highly
homologous.