>1a3sA (A:) observed residues (from ATOM records)
msgialsrlaqerkawrkdhpfgfvavptknpdgtmnlmnwecaipgkkgtpwegglfkl
rmlfkddypssppkckfepplfhpnvypsgtvclsileedkdwrpaitikqillgiqell
nepniqdpaqaeaytiycqnrveyekrvraqakkfaps