Chains and heterogens:
PDB Chain Sequences:
>1h12A (A:) afnnnpssvgayssgtyrnlaqemgktniqqkvnstfdnmfgynntqqlyypytengvyk ahyikainpdegddirtegqswgmtaavmlnkqeefdnlwrfakayqknpdnhpdakkqg vyawklklnqngfvykvdegpapdgeeyfafallnasarwgnsgefnyyndaitmlntik nklmenqiirfspyidnltdpsyhipafydyfannvtnqadknywrqvatksrtllknhf tkvsgsphwnlptflsrldgspvigyifngqanpgqwyefdawrvimnvgldahlmgaqa whksavnkalgflsyaktnnskncyeqvysyggaqnrgcagegqkaanavallastnagq aneffnefwslsqptgdyryyngslymlamlhvsgnfkfynntfn
>1h12A (A:) afnnnpssvgayssgtyrnlaqemgktniqqkvnstfdnmfgynntqqlyypytengvyk ahyikainpdegddirtegqswgmtaavmlnkqeefdnlwrfakayqknpdnhpdakkqg vyawklklnqngfvykvdegpapdgeeyfafallnasarwgnsgefnyyndaitmlntik nklmenqiirfspyidnltdpsyhipafydyfannvtnqadknywrqvatksrtllknhf tkvsgsphwnlptflsrldgspvigyifngqanpgqwyefdawrvimnvgldahlmgaqa whksavnkalgflsyaktnnskncyeqvysyggaqnrgcagegqkaanavallastnagq aneffnefwslsqptgdyryyngslymlamlhvsgnfkfynntf