>1cs4B (B:) observed residues (from ATOM records) yhqsydcvcvmfasipdfkefytesdvnkegleclrllneiiadfddllskpkfsgveki ktigstymaatglsairqymhigtmvefayalvgkldainkhsfndfklrvginhgpvia gvigaqkpqydiwgntvnvasrmdstgvldkiqvteetslilqtlgytctcrgiinvkgk gdlktyfvnt