>6ccnB (B:) observed residues (from ATOM records)
qkraiypgtfdpitnghidivtratqmfdhvilaiaaspskkpmftleervalaqqatah
lgnvevvgfsdlmanfarnqhatvlirglravadfeyemqlahmnrhlmpelesvflmps
kewsfissslvkevarhqgdvthflpenvhqalmaklavd