>2a1iA (A:) observed residues (from ATOM records) nsiivsprqrgnpvlkfvrnvpwefgdvipdyvlgqstcalflslryhnlhpdyihgrlq slgknfalrvllvqvdvkdpqqalkelakmciladctlilawspeeagryletykayeqk padllmekl