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The C-terminal region of PCNA. (A) Backbone trace representation of the polypeptide backbone of yeast PCNA. Two views of scPCNA are shown in which the C-terminal 7 aa are colored red. (B) Alignment of the C-terminal amino acid sequences of PCNA and the β subunit from different organisms. The consensus between the prokaryotic and eukaryotic clamps also is shown.
