Skip Navigation

Plant and Cell Physiology 2004 45(11):1633-1639; doi:10.1093/pcp/pch185
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Rosenblad, M. A.
Right arrow Articles by Samuelsson, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Rosenblad, M. A.
Right arrow Articles by Samuelsson, T.
Agricola
Right arrow Articles by Rosenblad, M. A.
Right arrow Articles by Samuelsson, T.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© 2004 Oxford University Press

Identification of Chloroplast Signal Recognition Particle RNA Genes

Magnus Alm Rosenblad and Tore Samuelsson1

Department of Medical Biochemistry, Goteborg University, Box 440, SE-405 30 Goteborg, Sweden

The signal recognition particle (SRP) is a ribonucleoprotein complex responsible for targeting proteins to the ER membrane in eukaryotes, the plasma membrane in bacteria and the thylakoid membrane in chloroplasts. In higher plants two different SRP-dependent mechanisms have been identified: one post-translational for proteins imported to the chloroplast and one co-translational for proteins encoded by the plastid genome. The post-translational chloroplast SRP (cpSRP) consists of the protein subunits cpSRP54 and cpSRP43. An RNA component has not been identified and does not seem to be required for the post-translational cpSRP. The co-translational mechanism is known to involve cpSRP54, but an RNA component has not yet been identified. Several chloroplast genomes have been sequenced recently, making a phylogenetically broad computational search for cpSRP RNA possible. We have analysed chloroplast genomes from 27 organisms. In higher plant chloroplasts, no SRP RNA genes were identified. However, eight plastids from red algae and Chlorophyta were found to contain an SRP RNA gene. These results suggest that SRP RNA forms a complex in these plastids with cpSRP54, reminiscent of the eubacterial SRP.

1 Corresponding author: E-mail, Tore.Samuelsson{at}medkem.gu.se; Fax, +46-31-41-61-08.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 ScienceHome page
K. F. Stengel, I. Holdermann, P. Cain, C. Robinson, K. Wild, and I. Sinning
Structural Basis for Specific Substrate Recognition by the Chloroplast Signal Recognition Particle Protein cpSRP43
Science, July 11, 2008; 321(5886): 253 - 256.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
T. Tzvetkova-Chevolleau, C. Hutin, L. D. Noel, R. Goforth, J.-P. Carde, S. Caffarri, I. Sinning, M. Groves, J.-M. Teulon, N. E. Hoffman, et al.
Canonical Signal Recognition Particle Components Can Be Bypassed for Posttranslational Protein Targeting in Chloroplasts
PLANT CELL, May 1, 2007; 19(5): 1635 - 1648.
[Abstract] [Full Text] [PDF]

Home page
 Nucleic Acids ResHome page
E. S. Andersen, M. A. Rosenblad, N. Larsen, J. C. Westergaard, J. Burks, I. K. Wower, J. Wower, J. Gorodkin, T. Samuelsson, and C. Zwieb
The tmRDB and SRPDB resources
Nucleic Acids Res., January 1, 2006; 34(suppl_1): D163 - D168.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.