Chains and heterogens:
PDB Chain Sequences:
>2x1yA (A:) mnqnllvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihe tiikaaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhll edyteeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaacl fsnypretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinat ssaivkyvsqragiginagriralgspirggeafhtgcipfykhfqtavkscsqggvrgg aatlfypmwhlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsd vpglydaffadqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhc nthspfdpaiapvrqsnlcleialptkplndvndengeialctlsafnlgainnldelee lailavraldalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlt hktfeaiqyyllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwe alresikthglrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdye hlhdayellwempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdllt aykfgvktlyyqntrdgaedaqddlvpsiqddgcesgacki
>2x1yA (A:) nllvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihetii kaaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhlledy teeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaaclfsn ypretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinatssa ivkyvsqragiginagriralgspfhtgcipfykhfqtavkscsqggvrggaatlfypmw hlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsdvpglydaff adqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhcnthspfdpa iapvrqsnlcleialptkplndvndengeialctlsafnlgainnldeleelailavral dalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlthktfeaiqy yllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwealresikth glrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdyehlhdayell wempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdlltaykfgvktl yyqntrdg
>2x1yB (B:) mnqnllvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihe tiikaaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhll edyteeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaacl fsnypretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinat ssaivkyvsqragiginagriralgspirggeafhtgcipfykhfqtavkscsqggvrgg aatlfypmwhlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsd vpglydaffadqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhc nthspfdpaiapvrqsnlcleialptkplndvndengeialctlsafnlgainnldelee lailavraldalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlt hktfeaiqyyllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwe alresikthglrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdye hlhdayellwempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdllt aykfgvktlyyqntrdgaedaqddlvpsiqddgcesgacki
>2x1yB (B:) nllvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihetii kaaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhlledy teeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaaclfsn ypretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinatssa ivkyvsqragiginagriralgspfhtgcipfykhfqtavkscsqggvrggaatlfypmw hlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsdvpglydaff adqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhcnthspfdpa iapvrqsnlcleialptkplndvndengeialctlsafnlgainnldeleelailavral dalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlthktfeaiqy yllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwealresikth glrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdyehlhdayell wempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdlltaykfgvktl yyqntrdg
>2x1yC (C:) mnqnllvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihe tiikaaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhll edyteeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaacl fsnypretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinat ssaivkyvsqragiginagriralgspirggeafhtgcipfykhfqtavkscsqggvrgg aatlfypmwhlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsd vpglydaffadqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhc nthspfdpaiapvrqsnlcleialptkplndvndengeialctlsafnlgainnldelee lailavraldalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlt hktfeaiqyyllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwe alresikthglrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdye hlhdayellwempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdllt aykfgvktlyyqntrdgaedaqddlvpsiqddgcesgacki
>2x1yC (C:) nllvtkrdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihetii kaaadlisrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhlledy teeefkqmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaaclfsn ypretrlqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinatssa ivkyvsqragiginagriralgspfhtgcipfykhfqtavkscsqggvrggaatlfypmw hlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsdvpglydaff adqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhcnthspfdpa iapvrqsnlcleialptkplndvndengeialctlsafnlgainnldeleelailavral dalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlthktfeaiqy yllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwealresikth glrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdyehlhdayell wempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdlltaykfgvktl yyqntrdg