Because insertion mutations in phoP are polar on phoQ , we constructed strains that expressed the PhoQ protein in the absence of PhoP to test whether resistance to defensin requires only the phoQ gene product .
because insertion mutations in phop are polar on phoq , we constructed strains that expressed the phoq protein in the absence of phop to test whether resistance to defensin requires only the phoq gene product .
O B-other_name B-other_name O B-DNA_domain_or_region O O O B-DNA_domain_or_region O O O O O O O B-protein_molecule I-protein_molecule O O O O B-protein_molecule O O O O O O O O O B-DNA_domain_or_region O O O