Chains and heterogens:
PDB Chain Sequences:
>2r1rA (A:) llvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihetiik aaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhlledyt eeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaaclfsny pretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinatssai vkyvsqragiginagriralgspirggeafhtgcipfykhfqtavkscsqggvrggaatl fypmwhlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsdvpgl ydaffadqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhcnths pfdpaiapvrqsnlcleialptkplndvndengeialctlsafnlgainnldeleelail avraldalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlthktf eaiqyyllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwealre sikthglrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdyehlhd ayellwempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdlltaykf gvktlyyqntrdg
>2r1rB (B:) llvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihetiik aaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhlledyt eeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaaclfsny pretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinatssai vkyvsqragiginagriralgspirggeafhtgcipfykhfqtavkscsqggvrggaatl fypmwhlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsdvpgl ydaffadqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhcnths pfdpaiapvrqsnlcleialptkplndvndengeialctlsafnlgainnldeleelail avraldalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlthktf eaiqyyllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwealre sikthglrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdyehlhd ayellwempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdlltaykf gvktlyyqntrdg
>2r1rC (C:) llvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihetiik aaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhlledyt eeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaaclfsny pretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinatssai vkyvsqragiginagriralgspirggeafhtgcipfykhfqtavkscsqggvrggaatl fypmwhlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsdvpgl ydaffadqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhcnths pfdpaiapvrqsnlcleialptkplndvndengeialctlsafnlgainnldeleelail avraldalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlthktf eaiqyyllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwealre sikthglrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdyehlhd ayellwempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdlltaykf gvktlyyqntrdg