>tr|A0A5C0XQ16|A0A5C0XQ16_PYRFU FAD synthase OS=Pyrococcus furiosus GN=ribL MGDNRKVRVVVGGVFDILHVGHVHFLKMAKELGDELIVIVAHDETVKRRKGRPPINPAED RAELLKSIRYVDDVVIGEPGEISIDLIKRLKPDVIALGPDQDFSCEELKKRLRKEGINAE VIRLPYLYKSDRAKTSKIIQRIIETFCE