Chains and heterogens:
PDB Chain Sequences:
>4b4uA (A:) mgsshhhhhhssgenlyfqghmalvldgralakqieenllvrvealkaktgrtpilatil vgddgasatyvrmkgnacrrvgmdslkielpqettteqllaeieklnanpdvhgillqhp vpaqideracfdaislakdvdgvtclgfgrmamgeaaygsatpagimtilkennieiagk havvvgrsailgkpmammllqanatvtichsrtqnlpelvkqadiivgavgkaeliqkdw ikqgavvvdagfhprdgggvgdiqlqgieeiasaytpvpggvgpmtittlirqtveaaek alg
>4b4uA (A:) malvldgralakqieenllvrvealkaktgrtpilatilvgddgasatyvrmkgnacrrv gmdslkielpqettteqllaeieklnanpdvhgillqhpvpaqideracfdaislakdvd gvtclgfgrmamgeaaygsatpagimtilkennieiagkhavvvgrsailgkpmammllq anatvtichsrtqnlpelvkqadiivgavgkaeliqkdwikqgavvvdagfhprdgggvg diqlqgieeiasaytpvpggvgpmtittlirqtveaaekalg
>4b4uB (B:) mgsshhhhhhssgenlyfqghmalvldgralakqieenllvrvealkaktgrtpilatil vgddgasatyvrmkgnacrrvgmdslkielpqettteqllaeieklnanpdvhgillqhp vpaqideracfdaislakdvdgvtclgfgrmamgeaaygsatpagimtilkennieiagk havvvgrsailgkpmammllqanatvtichsrtqnlpelvkqadiivgavgkaeliqkdw ikqgavvvdagfhprdgggvgdiqlqgieeiasaytpvpggvgpmtittlirqtveaaek alg
>4b4uB (B:) fqghmalvldgralakqieenllvrvealkaktgrtpilatilvgddgasatyvrmkgna crrvgmdslkielpqettteqllaeieklnanpdvhgillqhpvpaqideracfdaisla kdvdgvtclgfgrmamgeaaygsatpagimtilkennieiagkhavvvgrsailgkpmam mllqanatvtichsrtqnlpelvkqadiivgavgkaeliqkdwikqgavvvdagfhprdg ggvgdiqlqgieeiasaytpvpggvgpmtittlirqtveaaekalg