Chains and heterogens:
PDB Chain Sequences:
>3busA (A:) maaptpeevrqmyddftdpfariwgenlhfgywedagadvsvddatdrltdemialldvr sgdrvldvgcgigkpavrlatardvrvtgisisrpqvnqanarataaglanrvtfsyada mdlpfedasfdavwaleslhhmpdrgralremarvlrpggtvaiadfvllapvegakkea vdafragggvlslggideyesdvrqaelvvtstvdisaqarpslvktaeafenarsqvep fmgaegldrmiatfrglaevpeagyvligarkp
>3busA (A:) iwgenlhfgywedagadvsvddatdrltdemialldvrsgdrvldvgcgigkpavrlata rdvrvtgisisrpqvnqanarataaglanrvtfsyadamdlpfedasfdavwaleslhhm pdrgralremarvlrpggtvaiadfvllapvegakkeavdafragggvlslggideyesd vrqaelvvtstvdisaqarpslvktaeafenarsqvepfmgaegldrmiatfrglaevpe agyvligarkp
>3busB (B:) maaptpeevrqmyddftdpfariwgenlhfgywedagadvsvddatdrltdemialldvr sgdrvldvgcgigkpavrlatardvrvtgisisrpqvnqanarataaglanrvtfsyada mdlpfedasfdavwaleslhhmpdrgralremarvlrpggtvaiadfvllapvegakkea vdafragggvlslggideyesdvrqaelvvtstvdisaqarpslvktaeafenarsqvep fmgaegldrmiatfrglaevpeagyvligarkp
>3busB (B:) enlhfgywesvddatdrltdemialldvrsgdrvldvgcgigkpavrlatardvrvtgis isrpqvnqanarataaglanrvtfsyadamdlpfedasfdavwaleslhhmpdrgralre marvlrpggtvaiadfvllapvegakkeavdafragggvlslggideyesdvrqaelvvt stvdisaqarpslvktaeafenarsqvepfmgaegldrmiatfrglaevpeagyvligar kp