Research TopicsGenomes and GenesSpecies | TOC33SummaryGene Symbol: TOC33 Description: translocon at the outer envelope membrane of chloroplasts 33 Alias: ATTOC33, PLASTID PROTEIN IMPORT 1, PPI1, T6A9.32, translocon at the outer envelope membrane of chloroplasts 33, translocon at the outer envelope membrane of chloroplasts 33 Species: thale cress Products: TOC33 Top Publications
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Publications
- Aronsson H, Combe J, Jarvis P. Unusual nucleotide-binding properties of the chloroplast protein import receptor, atToc33. FEBS Lett. 2003;544:79-85 pubmedArabidopsis Toc33 (atToc33) is a GTP-binding protein of the chloroplast outer envelope membrane. We studied its nucleotide-binding properties in vitro, and found that it binds GTP, GDP and XTP, with similar efficiencies, but not ATP...
- Bauer J, Hiltbrunner A, Weibel P, Vidi P, Alvarez Huerta M, Smith M, et al. Essential role of the G-domain in targeting of the protein import receptor atToc159 to the chloroplast outer membrane. J Cell Biol. 2002;159:845-54 pubmedTwo homologous GTP-binding proteins, atToc33 and atToc159, control access of cytosolic precursor proteins to the chloroplast...
- Aronsson H, Combe J, Patel R, Agne B, Martin M, Kessler F, et al. Nucleotide binding and dimerization at the chloroplast pre-protein import receptor, atToc33, are not essential in vivo but do increase import efficiency. Plant J. 2010;63:297-311 pubmed publisher..It is a GTPase with motifs characteristic of such proteins, and its loss in the plastid protein import 1 (ppi1) mutant interferes with the import of photosynthesis-related pre-proteins, causing a chlorotic ..
- Koenig P, Oreb M, Rippe K, Muhle Goll C, Sinning I, Schleiff E, et al. On the significance of Toc-GTPase homodimers. J Biol Chem. 2008;283:23104-12 pubmed publisher..overall fold and nucleotide binding, as seen in the monomeric x-ray crystallographic structure of the Arabidopsis Toc33 arginine-alanine replacement variant at 2.0A...
- Oreb M, Höfle A, Koenig P, Sommer M, Sinning I, Wang F, et al. Substrate binding disrupts dimerization and induces nucleotide exchange of the chloroplast GTPase Toc33. Biochem J. 2011;436:313-9 pubmed publisher..of chloroplasts/inner envelope membrane of chloroplasts)] is controlled by two homologous receptor GTPases, Toc33 and Toc159, whose reversible dimerization is proposed to regulate translocation of incoming proteins in a GTP-..
- Reinbothe S, Pollmann S, Springer A, James R, Tichtinsky G, Reinbothe C. A role of Toc33 in the protochlorophyllide-dependent plastid import pathway of NADPH:protochlorophyllide oxidoreductase (POR) A. Plant J. 2005;42:1-12 pubmed..outer envelope protein Oep16 (named Ptc16) and a 33-kDa protein (Ptc33) related to the GTP-binding proteins Toc33 and Toc34 of Arabidopsis...
- Rahim G, Bischof S, Kessler F, Agne B. In vivo interaction between atToc33 and atToc159 GTP-binding domains demonstrated in a plant split-ubiquitin system. J Exp Bot. 2009;60:257-67 pubmed publisherThe GTPases atToc33 and atToc159 are pre-protein receptor components of the translocon complex at the outer chloroplast membrane in Arabidopsis...
- Agne B, Infanger S, Wang F, Hofstetter V, Rahim G, Martin M, et al. A toc159 import receptor mutant, defective in hydrolysis of GTP, supports preprotein import into chloroplasts. J Biol Chem. 2009;284:8670-9 pubmed publisher..The data also indicate that preprotein import requires at least one additional GTPase other than Toc159. ..
- Dhanoa P, Richardson L, Smith M, Gidda S, Henderson M, Andrews D, et al. Distinct pathways mediate the sorting of tail-anchored proteins to the plastid outer envelope. PLoS ONE. 2010;5:e10098 pubmed publisher..TA proteins, including the 33-kDa and 34-kDa GTPases of the translocon at the outer envelope of chloroplasts (Toc33 and Toc34) and a novel 9-kDa protein of unknown function that we define here as an outer envelope TA protein (OEP9)..
- Aronsson H, Jarvis P. Dimerization of TOC receptor GTPases and its implementation for the control of protein import into chloroplasts. Biochem J. 2011;436:e1-2 pubmed publisher..of the TOC (translocon at the outer envelope membrane of chloroplasts) complex are the receptor proteins Toc33 and Toc159...
- Aronsson H, Combe J, Patel R, Jarvis P. In vivo assessment of the significance of phosphorylation of the Arabidopsis chloroplast protein import receptor, atToc33. FEBS Lett. 2006;580:649-55 pubmedb>atToc33 is a transit peptide receptor of the chloroplast outer envelope membrane, and possesses GTPase activity...
- Inaba T, Alvarez Huerta M, Li M, Bauer J, Ewers C, Kessler F, et al. Arabidopsis tic110 is essential for the assembly and function of the protein import machinery of plastids. Plant Cell. 2005;17:1482-96 pubmed..Together, these data suggest that Tic110 plays a general role in the import of nuclear-encoded preproteins as a common component of Tic complexes. ..
- von Loeffelholz O, Kriechbaumer V, Ewan R, Jonczyk R, Lehmann S, Young J, et al. OEP61 is a chaperone receptor at the plastid outer envelope. Biochem J. 2011;438:143-53 pubmed publisher..We therefore propose that OEP61 is a novel chaperone receptor at the chloroplast outer envelope, mediating Hsp70-dependent protein targeting to chloroplasts. ..
- Oreb M, Zoryan M, Vojta A, Maier U, Eichacker L, Schleiff E. Phospho-mimicry mutant of atToc33 affects early development of Arabidopsis thaliana. FEBS Lett. 2007;581:5945-51 pubmedThe precursor protein receptor at the chloroplast outer membrane atToc33 is a GTPase, which can be inactivated by phosphorylation in vitro, being arrested in the GDP loaded state...
- Reddick L, Vaughn M, Wright S, Campbell I, Bruce B. In vitro comparative kinetic analysis of the chloroplast Toc GTPases. J Biol Chem. 2007;282:11410-26 pubmed..Here we present the first systematic kinetic characterization of four Toc GTPases (cytosolic domains of atToc33, atToc34, psToc34, and the GTPase domain of atToc159) to permit their direct comparison...
- Sommer M, Rudolf M, Tillmann B, Tripp J, Sommer M, Schleiff E. Toc33 and Toc64-III cooperate in precursor protein import into the chloroplasts of Arabidopsis thaliana. Plant Cell Environ. 2013;36:970-83 pubmed publisher..phenotype, which is distinct from the phenotype of ppi1, the previously described mutant of the TOC34 homolog TOC33. Furthermore, chloroplast import of the model precursor proteins pOE33 and pSSU into chloroplasts is reduced in ..