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The z-score plot of unrefined and refined 3D structure of vaccine by ProSA-web. (a) The z-score of the starting model is −4.03, (b) The z-score of model after refinement steps is −4.9. The z-score indicates overall model quality and is depicted as a black spot. The z-score plot contains the z-scores of all experimentally determined protein chains in current protein data bank (PDB) from NMR spectroscopy (charcoal) and X-ray crystallography (silver). 3D, three-dimensional.
