>1y12A (A:) observed residues (from ATOM records)
avdmfikigdvkgeskdkthaeeidvlawswgmsqsgsmhmggggagkvnvqdlsftkyi
dkstpnlmmacssgkhypqakltirkaggenqveyliitlkevlvssvstggsggedrlt
envtlnfaqvqvdyqpqkadgakdggpvkygwnirqnvqa