thec:FFX45_09320 K15576 nitrate/nitrite transport system substrate-binding protein | (GenBank) ABC transporter substrate-binding protein thec:FFX45_09315 K15577 nitrate/nitrite transport system permease protein | (GenBank) ntrB; nitrate ABC transporter permease thec:FFX45_09310 K15578 nitrate/nitrite transport system ATP-binding protein [EC:7.3.2.4] | (GenBank) ATP-binding cassette domain-containing protein