Chains and heterogens:
PDB Chain Sequences:
>4gb1A (A:) tymnnteaicdakgfapfskdngirigsrghifvirepfvscspiecrtffltqgsllnd khsngtvkdrspfrtlmsvevgqspnvyqarfeavawsatachdgkkwmtvgvtgpdska vavihyggvptdvvnswagdilrtqessctciqgdcywvmtdgpanrqaqyriykanqgr iigqtdisfngghieecscypndgkvecvcrdnwtgtnrpvlvispdlsyrvgylcagip sdtprgedtqftgsctspmgnqgygvkgfgfrqgtdvwmgrtisrtsrsgfeilrikngw tqtskeqirkqvvvdnlnwsgysgsftlpvelsgkdclvpcfwvemirgkpeektiwtss ssivmcgvdyevadwswhdgailpfdidkm
>4gb1A (A:) tymnnteaicdakgfapfskdngirigsrghifvirepfvscspiecrtffltqgsllnd khsngtvkdrspfrtlmsvevgqspnvyqarfeavawsatachdgkkwmtvgvtgpdska vavihyggvptdvvnswagdilrtqessctciqgdcywvmtdgpanrqaqyriykanqgr iigqtdisfngghieecscypndgkvecvcrdnwtgtnrpvlvispdlsyrvgylcagip sdtprgedtqftgsctspmgnqgygvkgfgfrqgtdvwmgrtisrtsrsgfeilrikngw tqtskeqirkqvvvdnlnwsgysgsftlpvelsgkdclvpcfwvemirgkpeektiwtss ssivmcgvdyevadwswhdgailpfdi