Table 3.

Octo-tricopeptide repeat proteins identified and studied in C. reinhardtii.

Type of protein	Name	Number of OPR motifs	Target	Function	Reference
OPR	CCS2	10	Possibly ccsA	Involved in assembly of cytochrome c complex.	Cline et al., 2017
	MBC1 (OPR56)	ND	psbC	Stabilization of psbC mRNA	Cavaiuolo et al., 2017
	MBI1	17	psbI	Stabilization of psbI 5'UTR	Wang et al., 2015
	MCG1	12	petG	Stabilization of petG 5'UTR	Wang et al., 2015
	MCD1	7	petD	Stabilization of the petD 5'UTR	Murakami et al., 2005
	MDA1	13	atpA	Stabilization and processing of the atpA transcript.	Drapier et al., 1998, 2002; Viola et al., 2019
	MTHI1	9	atpH, atpI	Stabilization and translation of atpH mRNA. Translation activation and stabilization atpI mRNA.	Ozawa et al., 2020
	RAA1	5	psaA	Trans-splicing of psaA mRNA	Rochaix et al., 2004; Merendino et al., 2006; Lefebvre-Legendre et al., 2016
	RAA3	5	psaA	Trans-splicing of psaA mRNA	Rivier et al., 2001; Reifschneider et al., 2016
	RAA8 (OPR120)	6	psaA	Trans-splicing of psaA mRNA	Marx et al., 2015; Lefebvre-Legendre et al., 2016; Reifschneider et al., 2016
	RAT2	2	psaA	Trans-splicing of psaA mRNA and processing of 3' end of tscA RNA	Eberhard et al., 2011; Marx et al., 2015; Lefebvre-Legendre et al., 2016; Reifschneider et al., 2016
	TAA1	7	psaA	Translation and stabilization of psaA mRNA.	Lefebvre-Legendre et al., 2015; Reifschneider et al., 2016
	TAB1	10	psaB	Translation of the psaB mRNA.	Stampacchia et al., 1997; Wostrikoff et al., 2004; Rahire et al., 2012
	TBC2	9	psbC	Translation of psbC mRNA	Auchincloss et al., 2002; Zerges et al., 2003; Rahim et al., 2016
	TDA1	8	atpA	Translation of atpA mRNA	Eberhard et al., 2011; Viola et al., 2019
	OPR1 (Cre01.g001501)	ND	psaA	Trans-splicing of psaA mRNA	Reifschneider et al., 2016
	OPR104 (Cre17.g698750)	ND	psaA	Trans-splicing of psaA mRNA	Reifschneider et al., 2016
OPR-NCL	NCC1	9	atpA	Destabilization of atpA transcripts	Boulouis et al., 2015
	NCC2	9	petA	Destabilization of petA transcripts	Boulouis et al., 2015