Chains and heterogens:
PDB Chain Sequences:
>4apuA (A:) gshmgqdiqlipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkws kslpgfrnlhiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkess fyslcltmwqipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyireli kaiglrqkgvvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmsevi aaqlpkilagmvkpllfhkk
>4apuA (A:) lipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkwskslpgfrnl hiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkessfyslcltmw qipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyirelikaiglrqkg vvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmseviaaqlpkila gmvkpllfhk
>4apuB (B:) gshmgqdiqlipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkws kslpgfrnlhiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkess fyslcltmwqipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyireli kaiglrqkgvvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmsevi aaqlpkilagmvkpllfhkk
>4apuB (B:) lipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkwskslpgfrnl hiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkessfyslcltmw qipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyirelikaiglrqkg vvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmseviaaqlpkila gmvkpllfhk