Chains and heterogens:
PDB Chain Sequences:
>4wa3A (A:) qfmqntealcdvkgfapfskdngirigsrghvfvirepfvscsptecrtffltqgsllnd khsngtekdrspyrtlmsveigqspnvyqarfeavawsatachdgkkwmtigvtgpdaka vavvhyggiptdvinswagdilrtqessctcilgecywvmtdgpanrqaqyrafkakqgk iigqveisfngghieecscypndgkvecvcrdnwtgtnrpvlvispdlsyrvgylcagls sdtprgedsqftgsctspvgnqgygvkgfgfrqgndvwmgrtisrtsrsgfeilkvrngw vqtskeqikrqvvvdnlnrsgysgsftlpveltkrdclvpcfwvemirgkpaektiwtss ssivmcgvdhevadwswhdgailpfdid