>sp|D1YZF2|RIBL_METPS FAD synthase OS=Methanocella paludicola GN=ribL MTRVVATGTFDILHPGHVLYLSEAGKLGDELYVIVARDSTIKHKRKPLVPENQRLFMVRA LKCVDHAMLGSEDDMFKPIREIDPDIITIGFNQHWDEEALQRQLIERGLKAKVVRITKCD TAPYASSRHIREKIKESDC