Fig. 2: Improvement in the fit of the structure of the spike glycoprotein of SARS-CoV-2 in the closed state (EMD-21452).
From: FSC-Q: a CryoEM map-to-atomic model quality validation based on the local Fourier shell correlation

In each panel, the left side shows the original fit and the right side shows the improved fit, using ISOLDE16. a Fragment composed of amino acids LEU-533 and VAL-534, and b THR-323 and GLU-324. Under each fragment, the average FSC-Q is shown.