>3ISY_1|Chain A|Intracellular proteinase inhibitor|Bacillus subtilis (1423) GMENQEVVLSIDAIQEPEQIKFNMSLKNQSERAIEFQFSTGQKFELVVYDSEHKERYRYSKEKMFTQAFQNLTLESGETYDFSDVWKEVPEPGTYEVKVTFKGRAENLKQVQAVQQFEVK