FIGURE 1.
Structure of Arabidopsis thaliana PRORP1 (PDB 4g24), generated in PyMOL (The PyMOL Molecular Graphics System, Version 1.7.4, Schrödinger, LLC). (A) Overall architecture of AtPRORP1. PPR motifs are in green and numbered from the N-terminal end, a plant-specific helical insertion in yellow (α12–13), central domain in red, and NYN domain in blue. Mn2+ ions displayed as pink spheres and Zn2+ ion displayed as a gray sphere. The region marked by the dashed box is expanded in panel B. (B) AtPRORP1 PPR domain motifs 2–4, generated in PyMOL. For each PPR motif, position 1 is colored yellow, position 3 is colored cyan, position 6 is colored purple, and position 10 is colored pink.