Involved in organellar RNA editing. Required for the processing of RNA editing sites in mitochondria. Heterodimer with MORF1 (PubMed:22411807, PubMed:25583991). Homodimer and heterodimers with MORF8/RIP1, MORF4/RIP4 and MORF5/RIP5 (PubMed:25583991). Retarded growth. Belongs to the MORF family.