Chains and heterogens:
PDB Chain Sequences:
>1t69A (A:) meepeepadsgqslvpvyiyspeyvsmcdslakipkrasmvhslieayalhkqmrivkpk vasmeematfhtdaylqhlqkvsqegdddhpdsieyglgydcpategifdyaaaiggati taaqclidgmckvainwsggwhhakkdeasgfcylndavlgilrlrrkferilyvdldlh hgdgvedafsftskvmtvslhkfspgffpgtgdvsdvglgkgryysvnvpiqdgiqdeky yqicesvlkevyqafnpkavvlqlgadtiagdpmcsfnmtpvgigkclkyilqwqlatli lggggynlantarcwtyltgvilgktlsseipdhefftaygpdyvleitpscrpdrneph riqqilnyikgnlkhvv
>1t69A (A:) lvpvyiyspeyvsmcdslakipkrasmvhslieayalhkqmrivkpkvasmeematfhtd aylqhlqkvsqpdsieyglgydcpategifdyaaaiggatitaaqclidgmckvainwsg gwhhakkdeasgfcylndavlgilrlrrkferilyvdldlhhgdgvedafsftskvmtvs lhkfspgffpgtgdvsdvglgkgryysvnvpiqdgiqdekyyqicesvlkevyqafnpka vvlqlgadtiagdpmcsfnmtpvgigkclkyilqwqlatlilggggynlantarcwtylt gvilgktlsseipdhefftaygpdyvleitpscrpdrnephriqqilnyikgnlkhvv