[gamma-Glutamyl-transferase activity in the family "Neisseriaceae" (author's transl)].

Members of the family Neisseriaceae (554 strains) were screened for gamma-glutamyl-transferase (gamma GT) activity. gamma GT was produced by Neisseria meningitidis but not produced by any strain of N. gonorrhoeae, N. lactamica and Branhamella catarrhalis. Most non-proteolytic Acinetobacter calcoaceticus produced gamma GT whereas most A. lwoffii failed to produce gamma GT.