Change in topological linking number during Xer recombination at the plasmid pSC101 psi site
James Iain Provan, Anna O. Tolmatcheva, David J. Sherratt, Sean D. Colloms
The paper measures the topological linkage change during Xer recombination at the psi site of plasmid pSC101, finding a +4 change consistent with a specific reaction mechanism.
bioRxiv · Jun 20, 2026 · PreprintBiochemistry