>1xcfA (A:) observed residues (from ATOM records)
meryeslfaqlkerkegafvpfvtlgdlgieqslkiidtlieagadalelgipfvtpaqc
femlaiirekhptipigllmyanlvfnkgidefyarcekvgvdsvlvadvpveesapfrq
aalrhnvapificppnadddllrqiasygrgftyllsraaalplnhlvaklkeynaappl
qgfgisapdqvkaaidagaagaisgsaivkiieqhinepekmlaalkvfvqpmkaatr