Chains and heterogens:
PDB Chain Sequences:
>1pigA (A:) eyapqtqsgrtsivhlfewrwvdialecerylgpkgfggvqvsppnenvvvtnpsrpwwe ryqpvsyklctrsgnenefrdmvtrcnnvgvriyvdavinhmcgsgaaagtgttcgsycn pgsrefpavpysawdfndgkcktasggiesyndpyqvrdcqlvglldlalekdyvrsmia dylnklidigvagfridaskhmwpgdikavldklhnlntnwfpagsrpfifqevidlgge aissseyfgngrvtefkygaklgtvvrkwsgekmsylknwgegwgfmpsdralvfvdnhd nqrghgaggssiltfwdarlykvavgfmlahpygftrvmssyrwarnfvngedvndwigp pnnngvikevtinadttcgndwvcehrwreirnmvwfrnvvdgqpfanwwdngsnqvafg rgnrgfivfnnddwqlsstlqtglpggtycnvisgdkvgnsctgikvyvssdgtaqfsis nsaqdpfiaihaeskl