Loss of both Holliday junction processing pathways is synthetically lethal in the presence of gonococcal pilin antigenic variation.
Sechman EV, Kline KA, Seifert HS. Loss of both Holliday junction processing pathways is synthetically lethal in the presence of gonococcal pilin antigenic variation. Mol Microbiol. 2006 Jul; 61(1):185-93.