Figure 1. Structure of photocleavable nucleotide-fluorophore conjugates and photocleavage reaction with products.

Figure 2. HPLC chromatograms of: a) aa-dUTP, b) BODIPY-FL-PC-aadUTP, c) BODIPY-FL-PC-aadUTP + UV, d) Cy5-PC-aadUTP, e) Cy5-PC-aadUTP + UV.