>3bukC (C:) observed residues (from ATOM records)
tcstglythsgecckacnlgegvaqpcganqtvcepcldsvtfsdvvsatepckpctecl
glqsmsapcveaddavcrcaygyyqdeetghceacsvcevgsglvfscqdkqntvceecp
egtysdeanhvdpclpctvcedterqlrectpwadaece