Figure 4.

Example QENS spectra measured on IN16B (q = 1.7 Å⁻¹), and q-wise fit (Eq. 4) at two temperatures, for unphosphorylated (uP) and phosphorylated (P) rOPN, normalized to their maximum for a better comparison. For clarity, the data are rebinned for |ħω| > 1 μeV. The wings of the spectra—|ħω| > 15 μeV—are the same for both rOPN forms at both temperatures, within the error bars (1 SD of uncertainty).