Threonine side chain conformational population distribution of a type I antifreeze protein on interacting with ice surface studied via 13C-15N dynamic REDOR NMR

► Low temperature dynamic REDOR NMR to study the conformational population distribution of an antifreeze protein in interacting with ice surface. ► Theoretical derivation of dynamic REDOR curves of conformational interconversion. ► χ-squared statistical analysis of REDOR data to characterize the conformational population distribution.