>4ES5_1|Chains A, B, C, D|Polymerase basic subunit 2|Influenza A virus (336232) GSHMRISSSFSFGGFTFKRTSGSSVTKEEEVLTGNLQTLKIRVHEGYEEFTMVGQRATAILRKATRRLIQLIVSGRNEQSIAEAIIVAMVFSQEDCMIKAVRGDLNFVNRANQRLNPMHQLLRHFQKDAKVLFQNWGTEPIDNVMGMIGILPDMTPSTEMSLRGVRVSKM