>2dtwB (B:) observed residues (from ATOM records)
ktisfnfnqfhqneeqlklqrdarissnsvleltkvvngvptwnstgralyakpvqvwds
ttgnvasfetrfsfsirqpfprphpadglvffiappntqtgegggyfgiynplspypfva
vefdtfrntwdpqiphigidvnsvistktvpftldnggianvvikydastkilhvvlvfp
slgtiytiadivdlkqvlpesvnvgfsaatgdpsgkqrnatethdilswsfsaslpg