Chains and heterogens:
PDB Chain Sequences:
>1w52X (X:) kevcytplgcfsddkpwagtlqrplkslpwspeevntrfllytnknpdsyqlitardvat ikssnfqssrkthfvihgfrdrgedswpsdmckkilqvettncisvdwssgakaeytqav qnirivgaetayliqqlltelsynpenvhiighslgahtageagrrlegrvgrvtgldpa epcfqdaseevrldpsdaqfvdvihtdaspmlpslgfgmsqkvghmdffpnggkqmpgck rssfstfidingiwqgaqdylacnhlksfeyysssilnpdgflaypcdsydkfqengcfp cpaggcpkmghyadqykektsaveqtfflntgesgdytswryrvsitlagsgkangylkv tlrgsngnskqyeifkgslqpdssytldvdvnfiigkiqevkfvwnktvlnlskpqlgas ritvqsgadgteykfcgsgtvqdnveqslypc
>1w52X (X:) kevcytplgcfsddkpwagtlqrplkslpwspeevntrfllytnknpdsyqlitardvat ikssnfqssrkthfvihgfrdrgedswpsdmckkilqvettncisvdwssgakaeytqav qnirivgaetayliqqlltelsynpenvhiighslgahtageagrrlegrvgrvtgldpa epcfqdaseevrldpsdaqfvdvihtdaspmlpslgfgmsqkvghmdffpnggkqmpgck rsfidingiwqgaqdylacnhlksfeyysssilnpdgflaypcdsydkfqengcfpcpag gcpkmghyadqykektsaveqtfflntgesgdytswryrvsitlagsgkangylkvtlrg sngnskqyeifkgslqpdssytldvdvnfiigkiqevkfvwnktvlnlskpqlgasritv qsgadgteykfcgsgtvqdnveqslypc