Fig. 5. The labelling of SPIN1 (20 ng μL^–1) by probes 1, 2 or 3 (2 μM) was inhibited by the H3K4Me₃ peptide (30 μM), whereas probe 1-mediated labelling of Sirt3 was not affected by the peptide, indicating that Sirt3 is not a specific binder of H3K4Me₃.