>2d3sA (A:) observed residues (from ATOM records)
ktisfnfnqfhqneeqlklqrdarissnsvleltkvvngvptwnstgralyakpvqvwds
ttgnvasfetrfsfsirqpfprphpadglvffiappntqtgegggyfgiynplspypfva
vefdtfrntwdpqiphigidvnsvistktvpftldnggianvvikydastkilhvvlvfp
slgtiytiadivdlkqvlpesvnvgfsaatgdpsgkqrnatethdilswsfsaslpg