>1c4zD (D:) observed residues (from ATOM records)
srrlmkeleeirkcgmknfrniqvdeanlltwqglivpdnppydkgafrieinfpaeypf
kppkitfktkiyhpnidekgqvclpvisaenwkpatktdqviqslialvndpqpehplra
dlaeeyskdrkkfcknaeeftkky