Chains and heterogens:
PDB Chain Sequences:
>1xh1A (A:) eyspntqqgrtsivhlfewrwvdialecerylapkgfggvqvsppnenvaiynpfrpwwe ryqpvsyklctrsgnedefrnmvtrcnnvgvriyvdavinhmcgnavsagtsstcgsyfn pgsrdfpavpysgwdfndgkcktgsgdienyndatqvrdcrltglldlalekdyvrskia eymnhlidigvagfrldaskhmwpgdikaildklhnlnsnwfpagskpfiyqevidlgge pikssdyfgngrvtefkygaklgtvirkwngekmsylknwgegwgfvpsdralvfvdshd nqrghgaggasiltfwdarlykmavgfmlahpygftrvmssyrwprqfqngndvndwvgp pnnngvikevtinpdttcgndwvcehrwrqirnmvifrnvvdgqpftnwydngsnqvafg rgnrgfivfnnddwsfsltlqtglpagtycdvisgdkingnctgikiyvsddgkahfsis nsaedpfiaihaeskl