2j3e

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Template:STRUCTURE 2j3e

Contents

Dimerization is important for the GTPase activity of chloroplast translocon components atToc33 and psToc159

Template:ABSTRACT PUBMED 17337454

Function

[TOC33_ARATH] GTPase involved in protein precursor import into chloroplasts. Seems to recognize chloroplast-destined precursor proteins and regulate their presentation to the translocation channel through GTP hydrolysis. Binds GTP, GDP, XTP, but not ATP. Probably specialized in the import of nuclear encoded photosynthetic preproteins from the cytoplasm to the chloroplast, especially during early development stages.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]

About this Structure

2j3e is a 1 chain structure with sequence from Arath. Full crystallographic information is available from OCA.

Reference

  • Yeh YH, Kesavulu MM, Li HM, Wu SZ, Sun YJ, Konozy EH, Hsiao CD. Dimerization is important for the GTPase activity of chloroplast translocon components atToc33 and psToc159. J Biol Chem. 2007 May 4;282(18):13845-53. Epub 2007 Mar 1. PMID:17337454 doi:10.1074/jbc.M608385200
  1. ↑ Yu TS, Li H. Chloroplast protein translocon components atToc159 and atToc33 are not essential for chloroplast biogenesis in guard cells and root cells. Plant Physiol. 2001 Sep;127(1):90-6. PMID:11553737
  2. ↑ Jelic M, Soll J, Schleiff E. Two Toc34 homologues with different properties. Biochemistry. 2003 May 20;42(19):5906-16. PMID:12741849 doi:http://dx.doi.org/10.1021/bi034001q
  3. ↑ Aronsson H, Combe J, Jarvis P. Unusual nucleotide-binding properties of the chloroplast protein import receptor, atToc33. FEBS Lett. 2003 Jun 5;544(1-3):79-85. PMID:12782294
  4. ↑ Weibel P, Hiltbrunner A, Brand L, Kessler F. Dimerization of Toc-GTPases at the chloroplast protein import machinery. J Biol Chem. 2003 Sep 26;278(39):37321-9. Epub 2003 Jul 16. PMID:12869544 doi:http://dx.doi.org/10.1074/jbc.M305946200
  5. ↑ Wallas TR, Smith MD, Sanchez-Nieto S, Schnell DJ. The roles of toc34 and toc75 in targeting the toc159 preprotein receptor to chloroplasts. J Biol Chem. 2003 Nov 7;278(45):44289-97. Epub 2003 Sep 1. PMID:12951325 doi:http://dx.doi.org/10.1074/jbc.M307873200
  6. ↑ Kubis S, Baldwin A, Patel R, Razzaq A, Dupree P, Lilley K, Kurth J, Leister D, Jarvis P. The Arabidopsis ppi1 mutant is specifically defective in the expression, chloroplast import, and accumulation of photosynthetic proteins. Plant Cell. 2003 Aug;15(8):1859-71. PMID:12897258
  7. ↑ Constan D, Patel R, Keegstra K, Jarvis P. An outer envelope membrane component of the plastid protein import apparatus plays an essential role in Arabidopsis. Plant J. 2004 Apr;38(1):93-106. PMID:15053763 doi:http://dx.doi.org/10.1111/j.1365-313X.2004.02024.x
  8. ↑ 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 Jan 23;580(2):649-55. Epub 2005 Dec 28. PMID:16412428 doi:http://dx.doi.org/S0014-5793(05)01538-3
  9. ↑ Hust B, Gutensohn M. Deletion of core components of the plastid protein import machinery causes differential arrest of embryo development in Arabidopsis thaliana. Plant Biol (Stuttg). 2006 Jan;8(1):18-30. PMID:16435266 doi:http://dx.doi.org/10.1055/s-2005-873044
  10. ↑ Oreb M, Zoryan M, Vojta A, Maier UG, Eichacker LA, Schleiff E. Phospho-mimicry mutant of atToc33 affects early development of Arabidopsis thaliana. FEBS Lett. 2007 Dec 22;581(30):5945-51. Epub 2007 Dec 3. PMID:18054337 doi:http://dx.doi.org/S0014-5793(07)01225-2

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