>1sg1X (X:) observed residues (from ATOM records) etcstglythsgecckacnlgegvaqpcganqtvcepcldnvtfsdvvsatepckpctec lglqsmsapcveaddavcrcaygyyqdeetghceacsvcevgsglvfscqdkqntvceec pegtysdeanhvdpclpctvcedterqlrectpwadaece