Chains and heterogens:
PDB Chain Sequences:
>3zr7A (A:) gshmgqdiqlipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkws kslpgfrnlhiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkess fyslcltmwqipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyireli kaiglrqkgvvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmsevi aaqlpkilagmvkpllfhkk
>3zr7A (A:) lipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkwskslpgfrnl hiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkessfyslcltmw qipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyirelikaiglrqkg vvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmseviaaqlpkila gmvkpllfhk
>3zr7B (B:) gshmgqdiqlipplinllmsiepdviyaghdntkpdtssslltslnqlgerqllsvvkws kslpgfrnlhiddqitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkess fyslcltmwqipqefvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyireli kaiglrqkgvvsssqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmsevi aaqlpkilagmvkpllfhkk
>3zr7B (B:) lipplinllmsiepdviyaghdntssslltslnqlgerqllsvvkwskslpgfrnlhidd qitliqyswmslmvfglgwrsykhvsgqmlyfapdlilneqrmkessfyslcltmwqipq efvklqvsqeeflcmkvllllntipleglrsqtqfeemrssyirelikaiglrqkgvvss sqrfyqltklldnlhdlvkqlhlyclntfiqsralsvefpemmseviaaqlpkilagmvk pllfhk