Chains and heterogens:
PDB Chain Sequences:
>4ifvA (A:) mvpispietvpvklkpgmdgpkvkqwplteekikalveictemekegkiskigpenpynt pvfaikkkdstkwrklvdfrelnkrtqdfwevqlgiphpaglkkkksvtvldvgdayfsv pldedfrkytaftipsinnetpgiryqynvlpqgwkgspaifqssmtkilepfaaqnpdi viyqymddlyvgsdleigqhrtkieelrqhllrwglttpdkkhqkeppflwmgyelhpdk wtvqpivlpekdswtvndiqklvgklnwasqiypgikvrqlskllrgtkaltevipltee aelelaenreilkepvhgvyydpskdliaeiqkqgqgqwtyqiyqepfknlktgkyarmr gahtndvkqlteavqkittesiviwgktpkfklpiqketwetwwteywqatwipewefvn tpplvklwyqlekepivgaetfyvdgaanretklgkagyvtnkgrqkvvpltnttnqkte lqaiylalqdsglevnivtdsqyalgiiqaqpdkseselvnqiieqlikkekvylawvpa hkgiggneqvdklvsag
>4ifvA (A:) mvpispietvpvklkpgmdgpkvkqwplteekikalveictemekegkiskigpenpynt pvfaikkkdstkwrklvdfrelnkrtqdfwevqlgiphpaglkkkksvtvldvgdayfsv pldedfrkytaftipsinnetpgiryqynvlpqgwkgspaifqssmtkilepfaaqnpdi viyqymddlyvgsdleigqhrtkieelrqhllrwglttpdkkhqkeppflwmgyelhpdk wtvqpivlpekdswtvndiqklvgklnwasqiypgikvrqlskllrgtkaltevipltee aelelaenreilkepvhgvyydpskdliaeiqkqgqgqwtyqiyqepfknlktgkyarmr gahtndvkqlteavqkittesiviwgktpkfklpiqketwetwwteywqatwipewefvn tpplvklwyqlekepivgaetfyvdgaanretklgkagyvtnkgrqkvvpltnttnqkte lqaiylalqdsglevnivtdsqyalgiiqaqpdkseselvnqiieqlikkekvylawvpa hkgiggneqvdklvsa
>4ifvB (B:) gpispietvpvklkpgmdgpkvkqwplteekikalveictemekegkiskigpenpyntp vfaikkkdstkwrklvdfrelnkrtqdfwevqlgiphpaglkkkksvtvldvgdayfsvp ldedfrkytaftipsinnetpgiryqynvlpqgwkgspaifqssmtkilepfkkqnpdiv iyqymddlyvgsdleigqhrtkieelrqhllrwglttpdkkhqkeppflwmgyelhpdkw tvqpivlpekdswtvndiqklvgklnwasqiypgikvrqlskllrgtkalteviplteea elelaenreilkepvhgvyydpskdliaeiqkqgqgqwtyqiyqepfknlktgkyarmrg ahtndvkqlteavqkittesiviwgktpkfklpiqketwetwwteywqatwipewefvnt pplvklwyq
>4ifvB (B:) ietvpvklkpgmdgpkvkqwplteekikalveictemekegkiskigpenpyntpvfaik kkdstkwrklvdfrelnkrtqdfwevqlgiphpaglkkkksvtvldvgdayfsvpldedf rkytaftipsinnetpgiryqynvlpqgwkgspaifqssmtkilepfkkqnpdiviyqym ddlyvgsdleigqhrtkieelrqhllrwglflwmgyelhpdkwtvqpivlpekdswtvnd iqklvgklnwasqiypgikvrqlskllrgtkalteviplteeaelelaenreilkepvhg vyydpskdliaeiqkqgqgqwtyqiyqepfknlktgkyarmrgahtndvkqlteavqkit tesiviwgktpkfklpiqketwetwwteywqatwipewefvntpplvklwyq