>1ffeA (A:) observed residues (from ATOM records)
rttrddlingnsascrdvifiyargatetgnlgtlgpsiasnlesafgkdgvwiqgvgga
yratlgdnalprgtssaairemlglfqqantkcpdatliaggysqgaalaaasiedldsa
irdkiagtvlfgytknlqnrgripnypadrtkvfcntgdlvctgslivaaphlaygpdar
gpapefliekvravrgs