>3a4sA (A:) observed residues (from ATOM records)
gialsrlaqerkawrkdhpfgfvavptkpdgtmnlmnwecaipgkkgtpwegglfklrml
fkddypssppkckfepplfhpnvypsgtvclsileedkdwrpaitikqillgiqellnep
niqdpaqaeaytiycqnrveyekrvraqakkfaps