Chains and heterogens:
PDB Chain Sequences:
>1g4uR (R:) mqaikcvvvgdgavgktcllisyttnafpgeyiptvfdnysanvmvdgkpvnlglwdtag qedydrlrplsypqtdvslicfslvspasfenvrakwypevrhhcpntpiilvgtkldlr ddkdtieklkekkltpitypqglamakeigavkylecsaltqrglktvfdeairavlcpp
>1g4uS (S:) skqplldialkglkrtlpqleqmdgnslrenfqemasgngplrslmtnlqnlnkipeakq lndyvttltniqvgvarfsqwgtcggeverwvdkastheltqavkkihviakelknvtae lekieagapmpqtmsgptlglarfavssipinqqtqvklsdgmpvpvntltfdgkpvala gsypkntpdaleahmkmllekecsclvvltsedqmqakqlppyfrgsytfgevhtnsqkv ssasqgeaidqynmqlscgekrytipvlhvknwpdhqplpstdqleyladrvknsnqnga pgrsssdkhlpmihclggvgrtgtmaaalvlkdnphsnleqvradfrdsrnnrmledasq fvqlkamqaqllm
>1g4uS (S:) skqplldialkglkrtlpqleqmdgnslrenfqemasgngplrslmtnlqnlnkipeakq lndyvttltniqvgvarfsqwgtcggeverwvdkastheltqavkkihviakelknvtae lekieagapmpqtmsgptlglarfavssipinqqtqvklsdgmpvpvntltfdgkpvala gsypkntpdaleahmkmllekecsclvvltsedqmqakqlppyfrgsytfgevhtnsqkv ssasqgeaidqynmqlscgekrytipvlhvknwpdhqplpstdqleyladrvknkhlpmi hclggvgrtgtmaaalvlkdnphsnleqvradfrdsrnnrmledasqfvqlkamqaqllm