Table 1.

Arabidopsis OMM TA proteins^a.

^aAll of the proteins listed are bona fide Arabidopsis OMM proteins, based on (Duncan et al., 2011, 2013) and Klodmann et al. (2011), and are also known or predicted to possess a TA topology, based on their identification in various proteomics- and bioinformatics-based searches in Arabidopsis (Kriechbaumer et al., 2009; Pedrazzini, 2009; Dhanoa et al., 2010). The proteins are grouped by TOM proteins and all other proteins, and then listed alphabetically. See text for additional details.

^bCommon nomenclature of Arabidopsis mitochondrial outer membrane TA proteins based on published literature and The Arabidopsis Information Resource (TAIR) (http://www.arabidopsis.org). Proteins indicated with an asterisk were experimentally characterized in terms of their intracellular localization and TA topology; see Figures 1, 2, and text for additional details.

^cAbbreviations are: APX-5, ascorbate peroxidase isoform 5; Cb5-6, cytochrome b₅ isoform 6; FIS1, fission 1; MIRO1/2, mitochondrial RHO GTPase 1 and 2; PAP2, purple acid phosphatase 2; PMD1/2, peroxisomal and mitochondrial division factor 1 and 2; TOM, translocase of the mitochondrial outer membrane (subunits 5, 6, 7, 9, and 20 and isoforms thereof); TraB, domain motif based on Enterococcus faecalis traB (An and Clewell, 1994).

^dArabidopsis gene identifier (AGI) number represents the systematic designation given to each locus, gene, and its corresponding protein product(s) by TAIR.

^eShown for each protein is its deduced C-terminal tail sequence, including its putative TMD (underlined), based on the TMD prediction program TOPCONS and visual inspection, and its downstream CTS. Shaded are the dibasic amino acid residues in the dibasic targeting signal motif, -R-R/K/H-X^{X≠E} (Hwang et al., 2004).