>tr|F0NRA2|F0NRA2_SULIH Arginine decarboxylase proenzyme OS=Sulfolobus islandicus GN=SiH_1555 MSEQEVLQKNNSPEGKEDRIIGKHVFGNLYDIDAERLNDKEFLEKLVLEAVNIAHMKLVE IKAWSFGGKKGGVSVIALVEESHIALHTWNEYNYATLDVYTCGEDSDPQSAFAHIVNALN PKRYQMFYADRSSQ