>1z41A (A:) observed residues (from ATOM records)
arklftpitikdmtlknrivmspmcmysshekdgkltpfhmahyisraigqvgliiveas
avnpqgritdqdlgiwsdehiegfaklteqvkeqgskigiqlahagrkaelegdifapsa
iafdeqsatpvemsaekvketvqefkqaaarakeagfdvieihaahgyliheflsplsnh
rtdeyggspenryrflreiidevkqvwdgplfvrvsasdytdkgldiadhigfakwmkeq
gvdlidcssgalvhadinvfpgyqvsfaekireqadmatgavgmitdgsmaeeilqngra
dlifigrellrdpffartaakqlnteipapvqyergw