>1r4fA (A:) observed residues (from ATOM records)
saknvvldhdgnlddfvamvllasntekvrligalctdadcfvengfnvtgkimclmhnn
mnlplfpigksaatavnpfpkewrclaknmddmpilnipenvelwdkikaenekyegqql
ladlvmnseekvticvtgplsnvawcidkygekftskveecvimggavdvrgnvflpstd
gtaewniywdpasaktvfgcpglrrimfsldstntvpvrspyvqrfgeqtnfllsilvgt
mwamyaadaltaayvvdqkvanvdpvpidvvvdkqpnegatvrtdaenypltfvarnpea
effldmllrsarac