Chains and heterogens:
PDB Chain Sequences:
>1x39A (A:) dyvlykdatkpvedrvadllgrmtlaekigqmtqierlvatpdvlrdnfigsllsgggsv prkgatakewqdmvdgfqkacmstrlgipmiygidavhgqnnvygatifphnvglgatrd pylvkrigeatalevratgiqyafapciavcrdprwgrcyesysedrrivqsmtelipgl qgdvpkdftsgmpfvagknkvaacakhfvgdggtvdginenntiinreglmnihmpaykn amdkgvstvmisysswngvkmhanqdlvtgylkdtlkfkgfvisdwegidrittpagsdy sysvkasilagldmimvpnkyqqfisiltghvnggvipmsriddavtrilrvkftmglfe npyadpamaeqlgkqehrdlareaarkslvllkngktstdapllplpkkapkilvagsha dnlgyqcggwtiewqgdtgrttvgttileavkaavdpstvvvfaenpdaefvksggfsya ivavgehpytetkgdnlnltipepglstvqavcggvrcatvlisgrpvvvqpllaasdal vaawlpgsegqgvtdalfgdfgftgrlprtwfksvdqlpmnvgdahydplfrlgyglttn at