>sp|Q8X5S5|NRFF_ECO57 Formate-dependent nitrite reductase complex subunit NrfF OS=Escherichia coli O157:H7 GN=nrfF MYKGLLTLLLLFTCFARAQVVDTWQFANPQQQQQALNIASQLRCPQCQNQNLLESNAPVA VSMRHQVYSMVAEGKSEVEIIGWMTERYGDFVRYNPPLTGQTLVLWALPVVLLLLMALIL WRVRAKR