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Amino acid sequence alignments of dUTPases between different herpesviruses and humans. (Top) Schematic drawing of the structures of PRV UL50 and human cellular dUTPase. (Bottom) Deduced amino acid sequence alignments of the C-terminal ends of functional dUTPase derived from humans, PRV UL50, HSV-1 UL50, KSHV ORF54, and MHV68 ORF54. The functional region (aa 225 to 253) of PRV UL50 responsible for anti-IFN activity is marked by a red rectangle.
