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. 2020 Mar 20;11:1254. doi: 10.1038/s41467-020-14992-9

Fig. 4. BCM1 interacts with GUN4 and stimulates MgCh activity via GUN4.

Fig. 4

a Y2H analyses of interactions between BCM1 and CBEs. The transformed yeast strains were analyzed on selective medium lacking Leu and Trp (SD/-L-T) or His, Leu, Trp and Ura (SD/-H-L-T-U) in the presence of 30 mM 3-amino-1,2,4-triazole (3-AT). The combination of NubG-GluTR and Cub-GBP was used as the positive control. The NubG was used as the negative control for NubG-BCM1. b BiFC assays for interactions between BCM1 and CBEs. Co-expression of BCM1ΔC20-YFPn with CHLH-YFPc served as the negative control, and the combination of GUN4-YFPn with CHLH-YFPc served as the positive control. Scale bars, 10 μm. c In vitro MgCh assay. Production of MgP in the assay was measured by HPLC and quantified relative to incubation time. Recombinant proteins used in the assay were stained with Coomassie Brilliant Blue (middle panel) and probed with GUN4 antibody (bottom panel), respectively. ND, not detected. Error bars represent SD of three biological replicates. Letters above histograms indicate significant differences as determined by Tukey’s HSD method (P < 0.05).