Chains and heterogens:
PDB Chain Sequences:
>1b2yA (A:) qyspntqqgrtsivhlfewrwvdialecerylapkgfggvqvsppnenvaiynpfrpwwe ryqpvsyklctrsgnedefrnmvtrcnnvgvriyvdavinhmcgnavsagtsstcgsyfn pgsrdfpavpysgwdfndgkcktgsgdienyndatqvrdcrltglldlalekdyvrskia eymnhlidigvagfrldaskhmwpgdikaildklhnlnsnwfpagskpfiyqevidlgge pikssdyfgngrvtefkygaklgtvirkwngekmsylknwgegwgfvpsdralvfvdnhd nqrghgaggasiltfwdarlykmavgfmlahpygftrvmssyrwprqfqngndvndwvgp pnnngvikevtinpdttcgndwvcehrwrqirnmvifrnvvdgqpftnwydngsnqvafg rgnrgfivfnnddwsfsltlqtglpagtycdvisgdkingnctgikiyvsddgkahfsis nsaedpfiaihaeskl
>1b2yA (A:) yspntqqgrtsivhlfewrwvdialecerylapkgfggvqvsppnenvaiynpfrpwwer yqpvsyklctrsgnedefrnmvtrcnnvgvriyvdavinhmcgnavsagtsstcgsyfnp gsrdfpavpysgwdfndgkcktgsgdienyndatqvrdcrltglldlalekdyvrskiae ymnhlidigvagfrldaskhmwpgdikaildklhnlnsnwfpagskpfiyqevidlggep ikssdyfgngrvtefkygaklgtvirkwngekmsylknwgegwgfvpsdralvfvdnhdn qrghgaggasiltfwdarlykmavgfmlahpygftrvmssyrwprqfqngndvndwvgpp nnngvikevtinpdttcgndwvcehrwrqirnmvifrnvvdgqpftnwydngsnqvafgr gnrgfivfnnddwsfsltlqtglpagtycdvisgdkingnctgikiyvsddgkahfsisn saedpfiaihaeskl