gene variant mutant K57N variant of H-NS PMID:21255333 a H-NS variant mutant with a single substitution at K57N. Created by error prone PCR.It was selected for 10 fold reduction of biofilm formation and observed that this is achieved through interaction with NAPs Cnu and StpA in E. coli BW25113. H-NS K57N enhanced the excision of defective E. coli prophage Rac. colombos:hns_b1237.K57N_VARIANT