Chains and heterogens:
PDB Chain Sequences:
>2alrA (A:) aascvllhtgqkmpliglgtwksepgqvkaavkyalsvgyrhidcaaiygnepeigealk edvgpgkavpreelfvtsklwntkhhpedvepalrktladlqleyldlylmhwpyaferg dnpfpknadgticydsthyketwkalealvakglvqalglsnfnsrqiddilsvasvrpa vlqvechpylaqneliahcqarglevtaysplgssdrawrdpdepvlleepvvlalaeky grspaqillrwqvqrkvicipksitpsrilqnikvfdftfspeemkqlnalnknwryivp mltvdgkrvprdaghplypfndpy
>2alrA (A:) aascvllhtgqkmpliglgtwksepgqvkaavkyalsvgyrhidcaaiygnepeigealk edvgpgkavpreelfvtsklwntkhhpedvepalrktladlqleyldlylmhwpyaferg dnpfpknadgticydsthyketwkalealvakglvqalglsnfnsrqiddilsvasvrpa vlqvechpylaqneliahcqarglevtaysplgvlleepvvlalaekygrspaqillrwq vqrkvicipksitpsrilqnikvfdftfspeemkqlnalnknwryivpmltvdgkrvprd aghplypfndpy