MTRR and infection: Given the prominent role of MtrR in modulating gonococcal resistance to antimicrobials, its control of genes involved in metabolism, its influence on the fitness of gonococci in an experimental infection model, and its proximity to gdhR, we tested the capacity of MtrR to regulate expression of gdhR in N. gonorrhoeae, as well as the ability of GdhR to regulate genes in the gdh locus (gdhR and gdhA).