>sp|C3NGS9|ARGDC_SULIN Arginine decarboxylase proenzyme OS=Sulfolobus islandicus GN=YN1551_1244 MSEQEVLQKNNSPEGKEDRIIGKHVFGNLYDIDAERLNDKEFLEKLVLEAVNIAHMKLVE IKAWSFGGKKGGVSVIALVEESHIALHTWNEYNYATLDVYTCGEDSDPQSAFAHIVNALN PKRYQMFYADRSSQ