>1cu6A (A:) observed residues (from ATOM records)
mnifemlrideglrlkiykdtegyytigighlltkspslnaakseldkaigrntngvitk
deaeklfnqdvdaavrgilrnaklkpvydsadavrraalinmvfqmgetgvagftnslrm
lqqkrwdeaavnlaksrwynqtpnrakrvittfrtgtwdayk