Chains and heterogens:
PDB Chain Sequences:
>4cunA (A:) rapapatphapdhspapnsptltrppegpkfprvknwelgsitydtlcaqsqqdgpctpr rclgslvlprklqtrpspgpppaeqllsqardfinqyyssikrsgsqaheerlqeveaev astgtyhlreselvfgakqawrnaprcvgriqwgklqvfdardcssaqemftyicnhiky atnrgnlrsaitvfpqrapgrgdfriwnsqlvryagyrqqdgsvrgdpanveitelciqh gwtpgngrfdvlplllqapdeapelfvlppelvlevplehptlewfaalglrwyalpavs nmlleigglefsaapfsgwymsteigtrnlcdphryniledvavcmdldtrttsslwkdk aaveinlavlhsfqlakvtivdhhaatvsfmkhldneqkarggcpadwawivppisgslt pvfhqemvnyilspafryqpdpw
>4cunA (A:) gpkfprvknwelgsitydtlcaqsqqdgpctprrclgslvlprpaeqllsqardfinqyy ssikrsgsqaheerlqeveaevastgtyhlreselvfgakqawrnaprcvgriqwgklqv fdardcssaqemftyicnhikyatnrgnlrsaitvfpqrapgrgdfriwnsqlvryagyr qqdgsvrgdpanveitelciqhgwtpgngrfdvlplllqapdeapelfvlppelvlevpl ehptlewfaalglrwyalpavsnmlleigglefsaapfsgwymsteigtrnlcdphryni ledvavcmdldtrttsslwkdkaaveinlavlhsfqlakvtivdhhaatvsfmkhldneq karggcpadwawivppisgsltpvfhqemvnyilspafryqpdpw
>4cunB (B:) rapapatphapdhspapnsptltrppegpkfprvknwelgsitydtlcaqsqqdgpctpr rclgslvlprklqtrpspgpppaeqllsqardfinqyyssikrsgsqaheerlqeveaev astgtyhlreselvfgakqawrnaprcvgriqwgklqvfdardcssaqemftyicnhiky atnrgnlrsaitvfpqrapgrgdfriwnsqlvryagyrqqdgsvrgdpanveitelciqh gwtpgngrfdvlplllqapdeapelfvlppelvlevplehptlewfaalglrwyalpavs nmlleigglefsaapfsgwymsteigtrnlcdphryniledvavcmdldtrttsslwkdk aaveinlavlhsfqlakvtivdhhaatvsfmkhldneqkarggcpadwawivppisgslt pvfhqemvnyilspafryqpdpw
>4cunB (B:) kfprvknwelgsitydtlcaqsqqdgpctprrclgslvlprklpaeqllsqardfinqyy ssikrsgsqaheerlqeveaevastgtyhlreselvfgakqawrnaprcvgriqwgklqv fdardcssaqemftyicnhikyatnrgnlrsaitvfpqrapgrgdfriwnsqlvryagyr qqdgsvrgdpanveitelciqhgwtpgngrfdvlplllqapdeapelfvlppelvlevpl ehptlewfaalglrwyalpavsnmlleigglefsaapfsgwymsteigtrnlcdphryni ledvavcmdldtrttsslwkdkaaveinlavlhsfqlakvtivdhhaatvsfmkhldneq karggcpadwawivppisgsltpvfhqemvnyilspafryqpdpw