Chains and heterogens:
PDB Chain Sequences:
>1sq9A (A:) mskvfiatanagkahdadifsvsacnsftvscsgdgylkvwdnklldnenpkdksyshfv hksglhhvdvlqaierdafelclvattsfsgdllfyritredetkkvifekldlldsdmk khsfwalkwgasndrllshrlvatdvkgttyiwkfhpfadesnsltlnwsptlelqgtve spmtpsqfatsvdisergliatgfnngtvqiselstlrplynfesqhsminnsnsirsvk fspqgsllaiahdsnsfgcitlyetefgerigslsvpthssqaslgefahsswvmslsfn dsgetlcsagwdgklrfwdvktkerittlnmhcddieieedilavdehgdslaepgvfdv kflkkgwrsgmgadlneslccvcldrsirwfreaggk
>1sq9A (A:) kvfiatanagkahdadifsvsacnsftvscsgdgylkvwdnklldnenpkdksyshfvhk sglhhvdvlqaierdafelclvattsfsgdllfyritredetkkvifekldlldsdmkkh sfwalkwgasnshrlvatdvkgttyiwkfhpfadesnsltlnwsptlelqgtvespmtps qfatsvdisergliatgfnngtvqiselstlrplynfesqhnnsnsirsvkfspqgslla iahdsnsfgcitlyetefgerigslsvpgefahsswvmslsfndsgetlcsagwdgklrf wdvktkerittlnmhcddieieedilavdehgdslaepgvfdvkflkkgwrsgmgadlne slccvcldrsirwfreag