Sequence-identification benchmarks for 909 cryo-EM models of ribosomal proteins. (a) Comparison of the method performances for an identification of models built de novo against small (proteomes) and large (PDB100) sequence databases. (b) Comparison of the method performances for models built de novo and those based on refined deposited coordinates. Histograms of the median local resolution of the test-set proteins are shown in grey (in arbitrary units). The continuous curves are logistic regression estimates of a probability that an identified sequence will have at least 80% sequence identity to the target sequence.