Domain composition of ORRM1 and ORRM6 and models for the editing complexes at the plastid RNA editing sites affected by mutations in ORRM1 and ORRM6. (a) Domain composition of full‐length ORRM1 and ORRM6 proteins. (b) Model for the editing complexes at the 21 ORRM1‐dependent plastid RNA editing sites: accD‐C1568, clpP‐C559, matK‐C640, ndhB‐C467, ndhB‐C586, ndhB‐C746, ndhB‐C830, ndhB‐C836, ndhB‐C872, ndhB‐C1255, ndhD‐C2, ndhD‐C674, ndhD‐C878, ndhD‐C887, ndhG‐C50, rpoA‐C200, rpoB‐C338, rpoB‐C551, rpoB‐C2432, rps12‐intron, and rps14‐C149. (c) Model for the editing complexes at the two ORRM6‐dependent plastid RNA editing sites: accD‐C794 and psbF‐C77. The PPR protein at accD‐C794 and psbF‐C77 is RARE1 and LPA66, respectively. For simplicity, only one name is shown for proteins with multiple names (e.g., “RIP1” for RIP1/MORF8). Black lines represent transcripts; the letter C in white pentagons represents the cytidine target