Figure 8.

Subunit Compositions of TRAPP Complexes in Arabidopsis and Animals Are Similar.

Overview of the shared and specific TRAPPII and TRAPPIII subunits in different kingdoms, with this report supporting the similar TRAPP complex composition in plants. For simplicity, original yeast subunit nomenclature is used, and the names in parentheses are the names of animal homologs for each subunit. Animal-specific names are listed if the subunits are not present in yeast. Yeast and animal TRAPPII and TRAPPIII complexes were well defined in previous studies (Riedel et al., 2018; Thomas et al., 2018; reviewed by Kim et al., 2016; Sacher et al., 2019). TRAPPII composition in plants was determined from the TRIPP IP-MS results presented in this study (Figure 2C; Supplemental Table 2). The asterisk (*) represents suggested TRAPPIII composition in plants based on the observation that AtTRS33 pulled down all TRAPP subunits (Table 1), whereas TRIPP pulled down only the TRAPPII complex, but not TRAPPIII-specific subunits (Figure 2; Supplemental Table 2), using the animal homologous TRAPPIII complex as a reference.