Chains and heterogens:
PDB Chain Sequences:
>1pr3A (A:) mknvgfigwrgmvgsvlmdrmsqendfenlnpvffttsqagqkapvfggkdagdlksafd ieelkkldiivtcqggdytnevypklkatgwdgywvdaasalkmkddaiivldpvnqhvi seglkkgiktfvggnctvslmlmaigglfekdlvewisvatyqaasgagaknmrellsqm glleqavsselkdpassildierkvtakmradnfptdnfgaalggslipwidkllpetgq tkeewkgyaetnkilglsdnpipvdglcvrigalrchsqaftiklkkdlpleeieqiias hnewvkvipndkeitlreltpakvtgtlsvpvgrlrklamgpeylaaftvgdqllwgaae pvrrilkqlva
>1pr3A (A:) mknvgfigwrgmvgsvlmdrmsqendfenlnpvffttsqalksafdieelkkldiivtcq ggdytnevypklkatgwdgywvdaasalkmkddaiivldpvnqhviseglkkgiktfvgg nctvslmlmaigglfekdlvewisvatyqaasgagaknmrellsqmglleqavsselkdp assildierkvtakmradnfptdnfgaalggslipwidkllpetgqtkeewkgyaetnki lglsdnpipvdglcvrigalrchsqaftiklkkdlpleeieqiiashnewvkvipndkei tlreltpakvtgtlsvpvgrlrklamgpeylaaftvgdqllwgaaepvrrilkqlva