>sp|A8AE11|NAPA_CITK8 Periplasmic nitrate reductase OS=Citrobacter koseri GN=napA MKLSRRSFMKANAVAAAAAAAGLSVPGVARAVVGQQEAIKWDKAPCRFCGTGCGVLVGTQ QGRIVACQGDPDAPVNRGLNCIKGYFLPKIMYGKDRLTQPMLRMKDGQYNKEGEFTPISW DQAFDVMEEKFKASLKEKGPEAIGMFGSGQWTVWEGYAAAKLFKAGFRSNNIDPNARHCM ASAVVGFMRTFGMDEPMGCYDDIEQADAFVLWGSNMAEMHPILWSRITNRRLSDPNVNVA VLSTFQHRSFELADNGIVFTPQSDLVILNYIANYIIQNNAINQDFFSKYVNLRKGTTDIG YGLRPTHPLEKAAKNPGSDASEPMSFDEYKAFVAEYTLEKTAEMTGVPKDQLEQLAQLYA DPKKKVISYWTMGFNQHTRGVWANNLVYNLHLLTGKISQPGCGPFSLTGQPSACGTAREV GTFSHRLPADMVVTNEKHRDICEKHWQIPTGTIPAKIGLHAVAQDRALKDGKLNVYWVMC NNNMQAGPNINEERMPGWRDPRNFVIVSDPYPTVSALAADLILPTAMWVEKEGAYGNAER RTQFWRQQIKAPGEAKSDLWQLVQFARRFKTEEVWPEDLLAQKPELRGKTLYDVLFATPA VSKFPLTDLAEDQLNDESRELGFYLQKGLFEEYAWFGRGHGHDLAPFDDYHKARGLRWPV VDGKETQWRYSEGHDPYVKAGEGYKFYGKPDGKAVIFALPFEPAAEAPDKEYDLWLSTGR VLEHWHTGSMTRRVPELHRAFPEAVLFIHPLDAKTRDLRRGDKVKVISRRGEVISVVETR GRNRPPQGLVYMPFFDAAQLVNNLTLDATDPLSKETDFKKCAVKLAKV