Chains and heterogens:
PDB Chain Sequences:
>1q19A (A:) msnsfcvvykgsdtdinniqrdfdgkgealsngylfieqnghyqkcemergtayligsly nrtfliglagvwegeaylandaellallftrlganalalaegdfcffidepngeltvite srgfspvhvvqgkkawmtnslklvtaaegegalwfeeealvcqslmradtytpvknaqrl kpgavhvlthdsegysfvesrtlttpasnqllalprepllalidrylnapledlaprfdt vgiplsggldsslvtalasrhfkklntysigtelsnefefsqqvadalgthhqmkilset evingiiesiyyneifdglsaeiqsglfnvyrqaqgqvscmltgygsdllfggilkpgaq ydnpnqllaeqvyrtrwtgefathgascygidirhpfwshslislchalhpdykifdnev knilreyadslqllpkdivwrkkigihegssvnqafanvlgstvdnyqtksrftyrvyqa flrgrlsitdvtpsqlkdlikkd
>1q19A (A:) snsfcvvykgsdtdinniqrdfdgkgealsngylfieqnghyqkcemergtayligslyn rtfliglagvwegeaylandaellallftrlganalalaegdfcffidepngeltvites rgfspvhvvqgkkawmtnslklvtaaegegalwfeeealvcqslmradtytpvknaqrlk pgavhvlthdsegysfvesrtlttpasnqllalprepllalidrylnapledlaprfdtv giplsggldsslvtalasrhfkklntysigtelsnefefsqqvadalgthhqmkilsete vingiiesiyyneifdglsaeiqsglfnvyrqaqgqvscmltgygsdllfggilkpgaqy dnpnqllaeqvyrtrwtgefathgascygidirhpfwshslislchalhpdykifdnevk nilreyadslqllpkdivwrkkigihegssvnqafanvlgstvdnyqtksrftyrvyqaf lrgrlsitdvtpsqlkdlik
>1q19B (B:) msnsfcvvykgsdtdinniqrdfdgkgealsngylfieqnghyqkcemergtayligsly nrtfliglagvwegeaylandaellallftrlganalalaegdfcffidepngeltvite srgfspvhvvqgkkawmtnslklvtaaegegalwfeeealvcqslmradtytpvknaqrl kpgavhvlthdsegysfvesrtlttpasnqllalprepllalidrylnapledlaprfdt vgiplsggldsslvtalasrhfkklntysigtelsnefefsqqvadalgthhqmkilset evingiiesiyyneifdglsaeiqsglfnvyrqaqgqvscmltgygsdllfggilkpgaq ydnpnqllaeqvyrtrwtgefathgascygidirhpfwshslislchalhpdykifdnev knilreyadslqllpkdivwrkkigihegssvnqafanvlgstvdnyqtksrftyrvyqa flrgrlsitdvtpsqlkdlikkd
>1q19B (B:) snsfcvvykgsdtdinniqrdfdgkgealsngylfieqnghyqkcemergtayligslyn rtfliglagvwegeaylandaellallftrlganalalaegdfcffidepngeltvites rgfspvhvvqgkkawmtnslklvtaaegegalwfeeealvcqslmradtytpvknaqrlk pgavhvlthdsegysfvesrtlttpasnqllalprepllalidrylnapledlaprfdtv giplsggldsslvtalasrhfkklntysigtelsnefefsqqvadalgthhqmkilsete vingiiesiyyneifdglsaeiqsglfnvyrqaqgqvscmltgygsdllfggilkpgaqy dnpnqllaeqvyrtrwtgefathgascygidirhpfwshslislchalhpdykifdnevk nilreyadslqllpkdivwrkkigihegssvnqafanvlgstvdnyqtksrftyrvyqaf lrgrlsitdvtpsqlkdlik
>1q19C (C:) msnsfcvvykgsdtdinniqrdfdgkgealsngylfieqnghyqkcemergtayligsly nrtfliglagvwegeaylandaellallftrlganalalaegdfcffidepngeltvite srgfspvhvvqgkkawmtnslklvtaaegegalwfeeealvcqslmradtytpvknaqrl kpgavhvlthdsegysfvesrtlttpasnqllalprepllalidrylnapledlaprfdt vgiplsggldsslvtalasrhfkklntysigtelsnefefsqqvadalgthhqmkilset evingiiesiyyneifdglsaeiqsglfnvyrqaqgqvscmltgygsdllfggilkpgaq ydnpnqllaeqvyrtrwtgefathgascygidirhpfwshslislchalhpdykifdnev knilreyadslqllpkdivwrkkigihegssvnqafanvlgstvdnyqtksrftyrvyqa flrgrlsitdvtpsqlkdlikkd
>1q19C (C:) snsfcvvykgsdtdinniqrdfdgkgealsngylfieqnghyqkcemergtayligslyn rtfliglagvwegeaylandaellallftrlganalalaegdfcffidepngeltvites rgfspvhvvqgkkawmtnslklvtaaegegalwfeeealvcqslmradtytpvknaqrlk pgavhvlthdsegysfvesrtlttpasnqllalprepllalidrylnapledlaprfdtv giplsggldsslvtalasrhfkklntysigtelsnefefsqqvadalgthhqmkilsete vingiiesiyyneifdglsaeiqsglfnvyrqaqgqvscmltgygsdllfggilkpgaqy dnpnqllaeqvyrtrwtgefathgascygidirhpfwshslislchalhpdykifdnevk nilreyadslqllpkdivwrkkigihegssvnqafanvlgstvdnyqtksrftyrvyqaf lrgrlsitdvtpsqlkdlik
>1q19D (D:) msnsfcvvykgsdtdinniqrdfdgkgealsngylfieqnghyqkcemergtayligsly nrtfliglagvwegeaylandaellallftrlganalalaegdfcffidepngeltvite srgfspvhvvqgkkawmtnslklvtaaegegalwfeeealvcqslmradtytpvknaqrl kpgavhvlthdsegysfvesrtlttpasnqllalprepllalidrylnapledlaprfdt vgiplsggldsslvtalasrhfkklntysigtelsnefefsqqvadalgthhqmkilset evingiiesiyyneifdglsaeiqsglfnvyrqaqgqvscmltgygsdllfggilkpgaq ydnpnqllaeqvyrtrwtgefathgascygidirhpfwshslislchalhpdykifdnev knilreyadslqllpkdivwrkkigihegssvnqafanvlgstvdnyqtksrftyrvyqa flrgrlsitdvtpsqlkdlikkd
>1q19D (D:) snsfcvvykgsdtdinniqrdfdgkgealsngylfieqnghyqkcemergtayligslyn rtfliglagvwegeaylandaellallftrlganalalaegdfcffidepngeltvites rgfspvhvvqgkkawmtnslklvtaaegegalwfeeealvcqslmradtytpvknaqrlk pgavhvlthdsegysfvesrtlttpasnqllalprepllalidrylnapledlaprfdtv giplsggldsslvtalasrhfkklntysigtelsnefefsqqvadalgthhqmkilsete vingiiesiyyneifdglsaeiqsglfnvyrqaqgqvscmltgygsdllfggilkpgaqy dnpnqllaeqvyrtrwtgefathgascygidirhpfwshslislchalhpdykifdnevk nilreyadslqllpkdivwrkkigihegssvnqafanvlgstvdnyqtksrftyrvyqaf lrgrlsitdvtpsqlkdlik