>sp|P16857|VNFG_AZOVI Nitrogenase vanadium-iron protein delta chain OS=Azotobacter vinelandii GN=vnfG MSQSHLDDLFAYVEERCLWQFFSRTWDREENIEGVLNQVGRLLTGQEPLRGTPQERLFYA DALAMANDVRERFPWASQVNKEEIEFLLDGLKSRLVDVTITRSTNRELNHHLY