Chains and heterogens:
PDB Chain Sequences:
>1l7kA (A:) msikirdfglgsdlisltnkagvtisftnlgarivdwqkdgkhlilgfdsakeylekday pgatvgptagrikdglvkisgkdyilnqnegpqtlhggeesihtklwtyevtdlgaevqv kfslvsndgtngypgkiemsvthsfdddnkwkihyeaisdkdtvfnptghvyfnlngdas esvenhglrlaasrfvplkdqteivrgdivdikntdldfrqekqlsnafnsnmeqvqlvk gidhpflldqlgldkeqarltlddtsisvftdqpsiviftanfgdlgtlyhekkqvhhgg itfecqvspgseqipelgdislkagekyqattiyslhtklehhhhhh
>1l7kA (A:) sikirdfglgsdlisltnkagvtisftnlgarivdwqkdgkhlilgfdsakeylekdayp gatvgptagrikdglvkisgkdyilnqnegpqtlhggeesihtklwtyevtdlgaevqvk fslvsndgtngypgkiemsvthsfdddnkwkihyeaisdkdtvfnptghvyfnlngdase svenhglrlaasrfvplkdqteivrgdivdikntdldfrqekqlsnafnsnmeqvqlvkg idhpflldqlgldkeqarltlddtsisvftdqpsiviftanfgdlgtlyhekkqvhhggi tfecqvspgseqipelgdislkagekyqattiyslhtkl
>1l7kB (B:) msikirdfglgsdlisltnkagvtisftnlgarivdwqkdgkhlilgfdsakeylekday pgatvgptagrikdglvkisgkdyilnqnegpqtlhggeesihtklwtyevtdlgaevqv kfslvsndgtngypgkiemsvthsfdddnkwkihyeaisdkdtvfnptghvyfnlngdas esvenhglrlaasrfvplkdqteivrgdivdikntdldfrqekqlsnafnsnmeqvqlvk gidhpflldqlgldkeqarltlddtsisvftdqpsiviftanfgdlgtlyhekkqvhhgg itfecqvspgseqipelgdislkagekyqattiyslhtklehhhhhh
>1l7kB (B:) sikirdfglgsdlisltnkagvtisftnlgarivdwqkdgkhlilgfdsakeylekdayp gatvgptagrikdglvkisgkdyilnqnegpqtlhggeesihtklwtyevtdlgaevqvk fslvsndgtngypgkiemsvthsfdddnkwkihyeaisdkdtvfnptghvyfnlngdase svenhglrlaasrfvplkdqteivrgdivdikntdldfrqekqlsnafnsnmeqvqlvkg idhpflldqlgldkeqarltlddtsisvftdqpsiviftanfgdlgtlyhekkqvhhggi tfecqvspgseqipelgdislkagekyqattiyslhtklehhhhhh