Chains and heterogens:
PDB Chain Sequences:
>1u4qA (A:) mankqqnfntgikdfdfwlseveallasedygkdlasvnnllkkhqlleadisahedrlk dlnsqadslmtssafdtsqvkdkretingrfqriksmaaarraklneshrlhqffrdmdd eeswikekkllvssedygrdltgvqnlrkkhkrleaelaahepaiqgvldtgkklsddnt igkeeiqqrlaqfvdhwkelkqlaaargqrleesleyqqfvanveeeeawinekmtlvas edygdtlaaiqgllkkheafetdftvhkdrvndvcangedlikknnhhvenitakmkglk gkvsdlekaaaqrkakldensa
>1u4qA (A:) ankqqnfntgikdfdfwlseveallasedygkdlasvnnllkkhqlleadisahedrlkd lnsqadslmtssafdtsqvkdkretingrfqriksmaaarraklneshrlhqffrdmdde eswikekkllvssedygrdltgvqnlrkkhkrleaelaahepaiqgvldtgkklsddnti gkeeiqqrlaqfvdhwkelkqlaaargqrleesleyqqfvanveeeeawinekmtlvase dygdtlaaiqgllkkheafetdftvhkdrvndvcangedlikknnhhvenitakmkglkg kvsdlekaaaqrkaklde
>1u4qB (B:) mankqqnfntgikdfdfwlseveallasedygkdlasvnnllkkhqlleadisahedrlk dlnsqadslmtssafdtsqvkdkretingrfqriksmaaarraklneshrlhqffrdmdd eeswikekkllvssedygrdltgvqnlrkkhkrleaelaahepaiqgvldtgkklsddnt igkeeiqqrlaqfvdhwkelkqlaaargqrleesleyqqfvanveeeeawinekmtlvas edygdtlaaiqgllkkheafetdftvhkdrvndvcangedlikknnhhvenitakmkglk gkvsdlekaaaqrkakldensa
>1u4qB (B:) qqnfntgikdfdfwlseveallasedygkdlasvnnllkkhqlleadisahedrlkdlns qadslmtssafdtsqvkdkretingrfqriksmaaarraklneshrlhqffrdmddeesw ikekkllvssedygrdltgvqnlrkkhkrleaelaahepaiqgvldtgkklsddntigke eiqqrlaqfvdhwkelkqlaaargqrleesleyqqfvanveeeeawinekmtlvasedyg dtlaaiqgllkkheafetdftvhkdrvndvcangedlikknnhhvenitakmkglkgkvs dlekaaaqrkakldens