Figure 2.

Distribution of Rama-Z scores by resolution for structures solved by X-ray diffraction and cryo-EM. Solid horizontal bars on each violin indicate the mean. The background color represents proposed Rama-Z ranges. Red (below −3 and above 3) is for geometrically improbable backbone geometry, yellow (from −3 to −2 and from 2 to 3) for unlikely yet possible, green (from −2 to 2) is for normal backbone geometry.