Chains and heterogens:
PDB Chain Sequences:
>1m4sA (A:) stpsiviasaartavgsfngafantpahelgatvisavleragvaagevnevilgqvlpa gegqnparqaamkagvpqeatawgmnqlcgsglravalgmqqiatgdasiivaggmesms maphcahlrggvkmgdfkmidtmikdgltdafygyhmgttaenvakqwqlsrdeqdafav asqnkaeaaqkdgrfkdeivpfivkgrkgditvdadeyirhgatldsmaklrpafdkegt vtagnasglndgaaaallmseaeasrrgiqplgrivswatvgvdpkvmgtgpipasrkal eragwkigdldlveaneafaaqacavnkdlgwdpsivnvnggaiaighpigasgarilnt llfemkrrgarkglatlcigggmgvamciesl
>1m4sB (B:) stpsiviasaartavgsfngafantpahelgatvisavleragvaagevnevilgqvlpa gegqnparqaamkagvpqeatawgmnqlcgsglravalgmqqiatgdasiivaggmesms maphcahlrggvkmgdfkmidtmikdgltdafygyhmgttaenvakqwqlsrdeqdafav asqnkaeaaqkdgrfkdeivpfivkgrkgditvdadeyirhgatldsmaklrpafdkegt vtagnasglndgaaaallmseaeasrrgiqplgrivswatvgvdpkvmgtgpipasrkal eragwkigdldlveaneafaaqacavnkdlgwdpsivnvnggaiaighpigasgarilnt llfemkrrgarkglatlcigggmgvamciesl
>1m4sC (C:) stpsiviasaartavgsfngafantpahelgatvisavleragvaagevnevilgqvlpa gegqnparqaamkagvpqeatawgmnqlcgsglravalgmqqiatgdasiivaggmesms maphcahlrggvkmgdfkmidtmikdgltdafygyhmgttaenvakqwqlsrdeqdafav asqnkaeaaqkdgrfkdeivpfivkgrkgditvdadeyirhgatldsmaklrpafdkegt vtagnasglndgaaaallmseaeasrrgiqplgrivswatvgvdpkvmgtgpipasrkal eragwkigdldlveaneafaaqacavnkdlgwdpsivnvnggaiaighpigasgarilnt llfemkrrgarkglatlcigggmgvamciesl
>1m4sD (D:) stpsiviasaartavgsfngafantpahelgatvisavleragvaagevnevilgqvlpa gegqnparqaamkagvpqeatawgmnqlcgsglravalgmqqiatgdasiivaggmesms maphcahlrggvkmgdfkmidtmikdgltdafygyhmgttaenvakqwqlsrdeqdafav asqnkaeaaqkdgrfkdeivpfivkgrkgditvdadeyirhgatldsmaklrpafdkegt vtagnasglndgaaaallmseaeasrrgiqplgrivswatvgvdpkvmgtgpipasrkal eragwkigdldlveaneafaaqacavnkdlgwdpsivnvnggaiaighpigasgarilnt llfemkrrgarkglatlcigggmgvamciesl