>sp|Q21AR4|NAPA_RHOPB Periplasmic nitrate reductase OS=Rhodopseudomonas palustris GN=napA MTTPKLDRRQVLKLEAAAMAALAGGIAMPAAAANLVTERAVSELKWDKAACRFCGTGCSV MVATKENRVVATHGDTKSEVNRGLNCVKGYFLSKIMYGHDRLTQPMLRKTDGKYDKNGEF MPVSWDEAFDIMAEKFKAALKKRGPSGVGMFGSGQWTVWEGYAASKLFKAGFRSNNIDPN ARHCMASAVAGFMRTFGIDEPMGCYDDIEAADVFVLWGSNMAEMHPLLWTRVTDRRLSAP HVKVAVLSTFEHRSFDLADLGLVFKPQTDLAILNAIANHIIKTGRVNKDFVAKHTTFKRG QTDIGYGLRPEHPLQKAATGAAKANDATDMSFEDYAAFVADYTIEKASQISGVPAAKIEA LAELYADPNTKVTSFWTMGFNQHTRGVWANNLAYNLHLLTGKISEPGNSPFSLTGQPSAC GTAREVGTFSHRLPADMVVTNKKHRDIAEKIWKLPEGTIPDKPGYHAVLQSRMLKDGLLN AYWVQVNNNLQAGANANEETYPGFRNPDNFIVVSDAYPSVTALAADLILPTAMWVEKEGA YGNAERRTQFWHQLVSAPGQARSDLWQLMEFAKRFKIEEVWTEELLAKKPEVRGKTMYDV LYRNGQVDKYPSSDIEAGYLNDESKAFGYYVQKGLFEEYASFGRGHGHDLAPFDDYHRER GLRWPVVNGQETRWRFREGSDPYVQQGAGVQFYGFPDGRARIFALPYEPAAEAPDAEFPF WLSTGRVLEHWHSGTMTRRVPELYKAFPEAVCFMHPDDAAELKLRRGDEIKVESRRGFIR TRVETRGRNKPPRGLVFVPWFDEAQLINKVTLDATDPISLQTDYKKCAVRIERVTAS