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2° to 32.2°C higher than the control, J1. With respect to protein recognition, gel shift assays reveal that the DNA-binding proteins HMGBb1 and HMGB1 bind the hairpin four-way junctions with affinity levels similar to control, J1. To evaluate nuclease resistance, four-way junctions are incubated with DNase I, exonuclease III (Exo III) and T5 exonuclease (T5 Exo). The enzymes probe nucleic acid cleavage that occurs non-specifically (DNase I) and in a 5'→3' (T5 Exo) and 3'→5' direction (Exo III). The nuclease digestion assays clearly show