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Intermolecular crosslinking. LC-MS/MS peptide map profile obtained of the dimer crosslinked gel band of N-terminal domain of Mo-MLV integrase. The dimer was digested with 0.8 μg of trypsin at 37°C overnight. The image shows the ionization and sequence of the LC peak (indicated in the inset) corresponding at the intermolecular peptide 67–73 and 86–95 with K68 and K88 crosslinked with BS3.
