Chains and heterogens:
PDB Chain Sequences:
>3v4zA (A:) snamaekvavllggtsaerevsllsgqavlaglkeagidaygvdtkdfpvtqlkeqgfdk vfialhgrggedgtlqgvleflqlpytgsgvmasaltmdklrtklvwqalglpispyval nrqqfetlspeelvacvaklglplivkpshegssvgmskvdhaselqkalveafqhdsdv liekwlsgpeftvailgdevlpsiriqppgvfydydakylsdktqyfcpsglsdeseqql aalalqayhaldcsgwgrvdvmqdrdghfyllevntspgmtshslvpmaarqyglsfsql varilmlad
>3v4zA (A:) aekvavllggtsaerevsllsgqavlaglkeagidaygvdtkdfpvtqlkeqgfdkvfia lhgrggedgtlqgvleflqlpytgsgvmasaltmdklrtklvwqalglpispyvalnrqq fetlspeelvacvaklglplivkpshegssvgmskvdhaselqkalveafqhdsdvliek wlsgpeftvailgdevlpsiriqppgktqyfcpsglsdeseqqlaalalqayhaldcsgw grvdvmqdrdghfyllevntspgmtshslvpmaarqyglsfsqlvarilmlad
>3v4zB (B:) snamaekvavllggtsaerevsllsgqavlaglkeagidaygvdtkdfpvtqlkeqgfdk vfialhgrggedgtlqgvleflqlpytgsgvmasaltmdklrtklvwqalglpispyval nrqqfetlspeelvacvaklglplivkpshegssvgmskvdhaselqkalveafqhdsdv liekwlsgpeftvailgdevlpsiriqppgvfydydakylsdktqyfcpsglsdeseqql aalalqayhaldcsgwgrvdvmqdrdghfyllevntspgmtshslvpmaarqyglsfsql varilmlad
>3v4zB (B:) maekvavllggtsaerevsllsgqavlaglkeagidaygvdtkdfpvtqlkeqgfdkvfi alhgrggedgtlqgvleflqlpytgsgvmasaltmdklrtklvwqalglpispyvalnrq qfetlspeelvacvaklglplivkpshgmskvdhaselqkalveafqhdsdvliekwlsg peftvailgdevlpsiriqpptqyfcpsglsdeseqqlaalalqayhaldcsgwgrvdvm qdrdghfyllevntspgmtshslvpmaarqyglsfsqlvarilmlad