Chains and heterogens:
PDB Chain Sequences:
>2exaA (A:) manvdeyitqlpaganlalmvqkvgasapaidyhsqqmalpastqkvitalaaliqlgpd frftttletkgnvengvlkgdlvarfgadptlkrqdirnmvatlkksgvnqidgnvlidt sifashdkapgwpwndmtqcfsappaaaivdrncfsvslysapkpgdmafirvasyypvt mfsqvrtlprgsaeaqyceldvvpgdlnrftltgclpqrseplplafavqdgasyagail kyelkqagitwsgtllrqtqvnepgtvvaskqsaplhdllkimlkksdnmiadtvfrmig harfnvpgtwragsdavrqilrqqagvdigntiiadgsglsrhnliapatmmqvlqyiaq hdnelnfismlplagydgslqyraglhqagvdgkvsaktgslqgvynlagfittasgqrm afvqylsgyavepadqrnrriplvrfesrlykdiyqnn
>2exaA (A:) yitqlpaganlalmvqkvgasapaidyhsqqmalpastqkvitalaaliqlgpdfrfttt letkgnvengvlkgdlvarfgadptlkrqdirnmvatlkksgvnqidgnvlidtsifash dkapgwpwndmtqcfsappaaaivdrncfsvslysapkpgdmafirvasyypvtmfsqvr tlprgsaeaqyceldvvpgdlnrftltgclpqrseplplafavqdgasyagailkyelkq agitwsgtllrqtqvnepgtvvaskqsaplhdllkimlkksdnmiadtvfrmigharfnv pgtwragsdavrqilrqqagvdigntiiadgsglsrhnliapatmmqvlqyiaqhdneln fismlplagydgslqyraglhqagvdgkvsaktgslqgvynlagfittasgqrmafvqyl sgyariplvrfesrlykdiyqnn