Table 1.

Proteins coimmunoprecipitated with RBL10-YFP-HA from chloroplast lysate (n=3).^*

#	Gene Annotation	Accession Number	MW kDa	Net Enrichment	Occurrence
1	PGK1 - phosphoglycerate kinase 1	AT3G12780	50	10.483	2
2	ATPC1 - ATPase, F1 complex, gamma subunit protein	AT4G04640	41	4.765	2
3	Transketolase	AT3G60750	80	4.765	2
4	LHCB3 - light-harvesting chlorophyll B-binding protein 3	AT5G54270	29	4.765	2
5	PSB27 - photosystem II family protein	AT1G03600	19	3.7131	2
6	ATPase, F0 complex, subunit B/B’, bacterial/chloroplast	AT4G32260	24	2.6612	2
7	ZKT - protein containing PDZ domain, a K-box domain, and a TPR region	AT1G55480	37	2.859	2
8	APX4 - ascorbate peroxidase 4	AT4G09010	38	1.8071	2
9	TOC159 - translocon at the OEM of chloroplasts 159	AT4G02510	161	1.9833	2
10	CPN60B, LEN1 - chaperonin 60 beta	AT1G55490	64	1.906	2
11	EDA9 - D-3-phosphoglycerate dehydrogenase	AT4G34200	63	1.906	2
12	SBPASE - sedoheptulose-bisphosphatase	AT3G55800	42	1.906	2
13	CLPC1 - CLPC homologue 1	AT5G50920	103	1.906	2
14	ATPB - ATP synthase subunit beta	ATCG00480	54	0.99167	2
15	RPS1 - ribosomal protein S1	AT5G30510	45	0.99167	3
16	RPL2.1 - ribosomal protein L2	ATCG00830	30	0.99167	2
17	Pyridine nucleotide-disulphide oxidoreductase family protein	AT1G74470	52	0.99167	2
18	Thioredoxin superfamily protein	AT3G11630	29	0.95299	2
19	PRK - phosphoribulokinase	AT1G32060	44	0.95299	2
20	FTSH1 - FTSH protease 1	AT1G50250	77	0.95299	2
21	ACP4 - acyl carrier protein 4	AT4G25050	15	0.95299	2
22	CPN20 - chaperonin 20	AT5G20720	27	0.95299	2

^*Proteins that were identified as at least twice as abundant in the anti-HA sample versus control are described here with their gene annotation, their gene ID, predicted molecular mass, the enrichment in the anti-HA sample compared to the control, and the recurrence out of three experimental replicates. Net enrichment = (normalized total peptide spectra in anti-HA sample – normalized total peptide spectra in control sample) / normalized total peptide spectra in control sample.