Chains and heterogens:
PDB Chain Sequences:
>3zraA (A:) gshmgqdiqlipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkws kslpgfrnlhiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkess fyslcltmwqipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyireli kaiglrqkgvvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmsevi aaqlpkilagmvkpllfhkk
>3zraA (A:) lipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkwskslpgfrnl hiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkessfyslcltmw qipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyirelikaiglrqkg vvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmseviaaqlpkila gmvkpllfhk
>3zraB (B:) gshmgqdiqlipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkws kslpgfrnlhiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkess fyslcltmwqipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyireli kaiglrqkgvvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmsevi aaqlpkilagmvkpllfhkk
>3zraB (B:) lipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkwskslpgfrnl hiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkessfyslcltmw qipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyirelikaiglrqkg vvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmseviaaqlpkila gmvkpllfhk