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Arabidopsis DNA Pol λ and PCNA2, but Not PCNA1, Interact in the Nucleus.
Images of BY-2 protoplasts 24 h after cotransfection with plasmids encoding the fusion proteins AtDNA pol λ-YFPC and AtPCNA1-YFPN or with AtDNA pol λ-YFPC and AtPCNA2-YFPN constructs. DNA pol λ interacts in vivo with PCNA2 (A) but not with PCNA1 (C). Respective bright-field differential interference contrast (DIC) images are shown ([B] and [D]). Bars = 25 μm.
