>1u31A (A:) observed residues (from ATOM records)
pmeisgthteinldnaidmireansiiitpgyglcaakaqypiadlvkmlteqgkkvrfg
ihpvagrmpgqlnvllaeagvpydivlemdeinhdfpdtdlvlvigandtvnsaaqedpn
siiagmpvlevwkskqvivmkrslgvgyaavdnpifykpntamllgdakktcdalqakvr
es