Dynamic Pathway of Guanidine-III Riboswitch Folding Revealed by Single-Molecule FRET: Mg2+-Assisted Preorganization and Ligand-Induced Kinetic Trapping
Mengke Jiang, Yunqiang Bian, Lujun Zou, Tingting Liu, Zongzhou Ji, Weitong Ren, Zilong Guo, Yi Cao, Yonghua Jiao, Hai Pan
This study uses smFRET and MD simulations to reveal the dynamic conformational changes of the guanidine-III riboswitch, showing how Mg2+ and ligand binding stabilize and trap its folded state.
ACS Chemical Biology · Oct 21, 2025Peer-reviewedBiophysics