cyp:PCC8801_4396 K15576 nitrate/nitrite transport system substrate-binding protein | (GenBank) nitrate transport protein cyp:PCC8801_4395 K15577 nitrate/nitrite transport system permease protein | (GenBank) nitrate ABC transporter, inner membrane subunit cyp:PCC8801_4394 K15578 nitrate/nitrite transport system ATP-binding protein [EC:7.3.2.4] | (GenBank) nitrate ABC transporter, ATPase subunits C and D