Chains and heterogens:
PDB Chain Sequences:
>2bucA (A:) srrtytltdylkstfrvkfytlqwisdheylykqennillfnaeygnssiflenstfdel gystndysvspdrqfilfeynyvkqwrhsytasydiydlnkrqliteeripnntqwitws pvghklayvwnndiyvknepnlssqritwtgkenviyngvtdwvyeeevfsaysalwwsp ngtflayaqfndtevplieysfysdeslqypktvripypkagaenptvkffvvdtrtlsp nasvtsyqivppasvligdhylcgvtwvteerislqwirraqnysiidicdydestgrwi ssvarqhieisttgwvgrfrpaephftsdgnsfykiisneegykhichfqtdksnctfit kgawevigiealtsdylyyisnehkgmpggrnlyriqlndytkvtclscelnpercqyys asfsnkakyyqlrcfgpglplytlhssssdkelrvlednsaldkmlqdvqmpskkldvin lhgtkfwyqmilpphfdkskkypllievyagpcsqkvdtvfrlswatylasteniivasf dgrgsgyqgdkimhainrrlgtfevedqieatrqfskmgfvddkriaiwgwsyggyvtsm vlgagsgvfkcgiavapvskweyydsvyterymglptpednldyyrnstvmsraenfkqv eyllihgtaddnvhfqqsaqlskalvdagvdfqtmwytdedhgiasnmahqhiythmshf lkqcfslp
>2bucB (B:) srrtytltdylkstfrvkfytlqwisdheylykqennillfnaeygnssiflenstfdel gystndysvspdrqfilfeynyvkqwrhsytasydiydlnkrqliteeripnntqwitws pvghklayvwnndiyvknepnlssqritwtgkenviyngvtdwvyeeevfsaysalwwsp ngtflayaqfndtevplieysfysdeslqypktvripypkagaenptvkffvvdtrtlsp nasvtsyqivppasvligdhylcgvtwvteerislqwirraqnysiidicdydestgrwi ssvarqhieisttgwvgrfrpaephftsdgnsfykiisneegykhichfqtdksnctfit kgawevigiealtsdylyyisnehkgmpggrnlyriqlndytkvtclscelnpercqyys asfsnkakyyqlrcfgpglplytlhssssdkelrvlednsaldkmlqdvqmpskkldvin lhgtkfwyqmilpphfdkskkypllievyagpcsqkvdtvfrlswatylasteniivasf dgrgsgyqgdkimhainrrlgtfevedqieatrqfskmgfvddkriaiwgwsyggyvtsm vlgagsgvfkcgiavapvskweyydsvyterymglptpednldyyrnstvmsraenfkqv eyllihgtaddnvhfqqsaqlskalvdagvdfqtmwytdedhgiasnmahqhiythmshf lkqcfslp
>2bucC (C:) srrtytltdylkstfrvkfytlqwisdheylykqennillfnaeygnssiflenstfdel gystndysvspdrqfilfeynyvkqwrhsytasydiydlnkrqliteeripnntqwitws pvghklayvwnndiyvknepnlssqritwtgkenviyngvtdwvyeeevfsaysalwwsp ngtflayaqfndtevplieysfysdeslqypktvripypkagaenptvkffvvdtrtlsp nasvtsyqivppasvligdhylcgvtwvteerislqwirraqnysiidicdydestgrwi ssvarqhieisttgwvgrfrpaephftsdgnsfykiisneegykhichfqtdksnctfit kgawevigiealtsdylyyisnehkgmpggrnlyriqlndytkvtclscelnpercqyys asfsnkakyyqlrcfgpglplytlhssssdkelrvlednsaldkmlqdvqmpskkldvin lhgtkfwyqmilpphfdkskkypllievyagpcsqkvdtvfrlswatylasteniivasf dgrgsgyqgdkimhainrrlgtfevedqieatrqfskmgfvddkriaiwgwsyggyvtsm vlgagsgvfkcgiavapvskweyydsvyterymglptpednldyyrnstvmsraenfkqv eyllihgtaddnvhfqqsaqlskalvdagvdfqtmwytdedhgiasnmahqhiythmshf lkqcfslp
>2bucD (D:) srrtytltdylkstfrvkfytlqwisdheylykqennillfnaeygnssiflenstfdel gystndysvspdrqfilfeynyvkqwrhsytasydiydlnkrqliteeripnntqwitws pvghklayvwnndiyvknepnlssqritwtgkenviyngvtdwvyeeevfsaysalwwsp ngtflayaqfndtevplieysfysdeslqypktvripypkagaenptvkffvvdtrtlsp nasvtsyqivppasvligdhylcgvtwvteerislqwirraqnysiidicdydestgrwi ssvarqhieisttgwvgrfrpaephftsdgnsfykiisneegykhichfqtdksnctfit kgawevigiealtsdylyyisnehkgmpggrnlyriqlndytkvtclscelnpercqyys asfsnkakyyqlrcfgpglplytlhssssdkelrvlednsaldkmlqdvqmpskkldvin lhgtkfwyqmilpphfdkskkypllievyagpcsqkvdtvfrlswatylasteniivasf dgrgsgyqgdkimhainrrlgtfevedqieatrqfskmgfvddkriaiwgwsyggyvtsm vlgagsgvfkcgiavapvskweyydsvyterymglptpednldyyrnstvmsraenfkqv eyllihgtaddnvhfqqsaqlskalvdagvdfqtmwytdedhgiasnmahqhiythmshf lkqcfslp