>tr|M9U9Z3|M9U9Z3_SULIS Arginine decarboxylase proenzyme OS=Sulfolobus islandicus LAL14/1 GN=SiL_1465 MSEQEVLQKNNSPEGKEDRIIGKHVFGNLYDIDAERLNDKEFLEKLVLEAVNIAHMKLVE IKAWSFGGKKGGVSVIALVEESHIALHTWNEYNYATLDVYTCGEDSDPQSAFAHIVNALN PKRYQMFYADRSSQ