Chains and heterogens:
PDB Chain Sequences:
>1rlr_ (-) rdgsterinldkihrvldwaaeglhnvsisqvelrshiqfydgiktsdihetiikaaadl isrdapdyqylaarlaifhlrkkaygqfeppalydhvvkmvemgkydnhlledyteeefk qmdtfidhdrdmtfsyaavkqlegkylvqnrvtgeiyesaqflyilvaaclfsnypretr lqyvkrfydavstfkislptpimsgvrtptrqfsscvliecgdsldsinatssaivkyvs qragiginagriralgspirggeafhtgcipfykhfqtavkscsqggvrggaatlfypmw hlevesllvlknnrgvegnrvrhmdygvqinklmytrllkgeditlfspsdvpglydaff adqeeferlytkyekddsirkqrvkavelfslmmqerastgriyiqnvdhcnthspfdpa iapvrqsnlcleialptkplndvndengeialctlsafnlgainnldeldelailavral dalldyqdypipaakrgamgrrtlgigvinfayylakhgkrysdgsannlthktfeaiqy yllkasnelakeqgacpwfnettyakgilpidtykkdldtianeplhydwealresikth glrnstlsalmpsetssqisnatngiepprgyvsikaskdgilrqvvpdyehlhdayell wempgndgylqlvgimqkfidqsisantnydpsrfpsgkvpmqqllkdlltaykfgvktl yyqntrddiddlsnfql