Chains and heterogens:
PDB Chain Sequences:
>1mpgA (A:) mytlnwqppydwswmlgflaaravssvetvadsyyarslavgeyrgvvtaipdiarhtlh inlsaglepvaaeclakmsrlfdlqcnpqivngalgrlgaarpglrlpgcvdafeqgvra ilgqlvsvamaakltarvaqlygerlddfpeyicfptpqrlaaadpqalkalgmplkrae alihlanaalegtlpmtipgdveqamktlqtfpgigrwtanyfalrgwqakdvflpddyl ikqrfpgmtpaqirryaerwkpwrsyallhiwytegwqpdea
>1mpgB (B:) mytlnwqppydwswmlgflaaravssvetvadsyyarslavgeyrgvvtaipdiarhtlh inlsaglepvaaeclakmsrlfdlqcnpqivngalgrlgaarpglrlpgcvdafeqgvra ilgqlvsvamaakltarvaqlygerlddfpeyicfptpqrlaaadpqalkalgmplkrae alihlanaalegtlpmtipgdveqamktlqtfpgigrwtanyfalrgwqakdvflpddyl ikqrfpgmtpaqirryaerwkpwrsyallhiwytegwqpdea