<p><b>(a)</b> The DNA fragment encoding the red fluorescent protein mCherry was PCR amplified with flanking extensions of 16, 24, or 32 bp of homologous sequence overlaps to an SV40 promoter-driven mammalian expression vector which was digested, or PCR amplified. AQUA Cloning was performed with pre-incubations on ice, at room temperature (RT), or at 50°C. DNA mixtures were transformed into chemically competent <i>E</i>. <i>coli</i> Top10 cells and colonies were obtained the next day. <b>(b)</b> Typical numbers of colony forming units (CFU) obtained from each condition. The highest number of CFU was derived from a pre-incubation at room temperature and with 32 bp of shared homology with PCR originating DNA fragments (arrow). The accuracies for each condition were determined by analytical colony PCR from eight selected clones and were extrapolated to the total number of CFU (grey). Abbreviations: P<sub>SV40</sub>, simian virus 40 early promoter.</p
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