Article (Scientific journals)
Higher plant-like subunit composition of mitochondrial complex I from Chlamydomonas reinhardtii: 31 conserved components among eukaryotes
Cardol, Pierre; Vanrobaeys, F.; Devreese, B. et al.
2004In Biochimica et Biophysica Acta. Bioenergetics, 1658 (3), p. 212-224
Peer Reviewed verified by ORBi
 

Files


Full Text
Cardol P et al 2004.pdf
Publisher postprint (611.53 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
complex 1; Chlamydomonas mitochondria; proteomics; bioinformatics
Abstract :
[en] The rotenone-sensitive NADH:ubiquinone oxidoreductase (complex I) is the most intricate membrane-bound enzyme of the mitochondrial respiratory chain. Notably the bovine enzyme comprises up to 46 subunits, while 27 subunits could be considered as widely conserved among eukaryotic complex I. By combining proteomic and genomic approaches, we characterized the complex I composition from the unicellular green alga Chlamydomonas reinhardtii. After purification by blue-native polyacrylamide gel electrophoresis (BN-PAGE), constitutive subunits were analyzed by SDS-PAGE coupled to tandem mass spectrometry (MS) that allowed the identification of 30 proteins. We compared the known complex I components from higher plants, mammals, nematodes and fungi with this MS data set and the translated sequences from the algal genome project. This revealed that the Chlamydomonas complex I is likely composed of 42 proteins, for a total molecular mass of about 970 kDa. In addition to the 27 typical components, we have identified four new complex I subunit families (bovine ESSS, PFFD, B16.6, B12 homologues), extending the number of widely conserved eukaryote complex I components to 31. In parallel, our analysis showed that a variable number of subunits appears to be specific to each eukaryotic kingdom (animals, fungi or plants). Protein sequence divergence in these kingdom-specific sets is significant and currently we cannot exclude the possibility that homology between them exists, but has not yet been detected. (C) 2004 Elsevier B.V. All rights reserved.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Cardol, Pierre  ;  Université de Liège - ULiège > Département des sciences de la vie > Biochimie végétale
Vanrobaeys, F.
Devreese, B.
Van Beeumen, J.
Matagne, René-Fernand ;  Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Remacle, Claire  ;  Université de Liège - ULiège > Département des sciences de la vie > Génétique
Language :
English
Title :
Higher plant-like subunit composition of mitochondrial complex I from Chlamydomonas reinhardtii: 31 conserved components among eukaryotes
Publication date :
04 October 2004
Journal title :
Biochimica et Biophysica Acta. Bioenergetics
ISSN :
0005-2728
eISSN :
1879-2650
Publisher :
Elsevier Science Bv, Amsterdam, Netherlands
Volume :
1658
Issue :
3
Pages :
212-224
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 January 2010

Statistics


Number of views
71 (4 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
102
Scopus citations®
without self-citations
79
OpenCitations
 
94

Bibliography


Similar publications



Contact ORBi