Chains and heterogens:
PDB Chain Sequences:
>2x1iA (A:) melpcayglllhptslpgpwgvgvlgeeargflrflkeagarywqvlplgptgygdspyq sfsafagnpylidlrplvdrgfvrledpgfpegrvdygllyawkwpalraafqgfrqkas peekedfarfqeeeawwlrdyalfmtlkshhgglpwnawplalrtreeralkeaeaslae eiafhaftqwlffrqwgalkeeaealgiafigdmpifvaedsaevwahpewfhldeegrp tvvagvppdyfsetgqrwgnplyrwevleeegfsfwiarlrkalelfhlvridhfrgfea yweipascptavegrwvkapgeklfariqeafgripilaedlgvitpevealrdrfglpg mkvlqfafdngmenpflphnypehgrvvvytgthdndttlgwyrtatpherdflkrylad wgitfreeaevpwalmrlgmasrarlavypvqdvlalgsearmnypgrpsgnwawrlrpg eikeehgerllslaeatgrv
>2x1iA (A:) pcayglllhptslpgpwgvgvlgeeargflrflkeagarywqvlplgptgygdspyqsfs afagnpylidlrplvdrgfvrledpgfpegrvdygllyawkwpalraafqgfrqkaspee kedfarfqeeeawwlrdyalfmtlkshhgglpwnawplalrtreeralkeaeaslaeeia fhaftqwlffrqwgalkeeaealgiafigdmpifvaedsaevwahpewfhldeegrptvv agvppdyfsetgqrwgnplyrwevleeegfsfwiarlrkalelfhlvridhfrgfeaywe ipascptavegrwvkapgeklfariqeafgripilaedlgvitpevealrdrfglpgmkv lqfafdngmenpflphnypehgrvvvytgthdndttlgwyrtatpherdflkryladwgi tfreeaevpwalmrlgmasrarlavypvqdvlalgsearmnypgrpsgnwawrlrpgeik eehgerllslaeatgrv