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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: Bioorg Med Chem Lett. 2010 Jan 4;20(3):841. doi: 10.1016/j.bmcl.2009.12.097

Figure 1.

Figure 1

Fluorescence microscopy images of E. coli KY895 expressing A.) an exogenous 2’-deoxyribonucleoside kinase from Drosophila melanogaster or B.) glycinamide ribonucleotide formyltransferase from E. coli (negative control) upon incubation with compound 1 (λex = 331 nm, λem = 413 nm). In the presence of a kinase, intracellular accumulation of 1 is observed as reflected in higher fluorescence intensity.