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