. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "narh_ecoli"^^ . "b1225"^^ . "Nitrate reductase A subunit beta"^^ . "JW1216"^^ . "Quinol-nitrate oxidoreductase subunit beta"^^ . "narH"^^ . . . "Respiratory nitrate reductase 1 beta chain"^^ .