Volume 16, Issue 3 pp. 491-503
Research Article

Arabidopsis thaliana root cell wall proteomics: Increasing the proteome coverage using a combinatorial peptide ligand library and description of unexpected Hyp in peroxidase amino acid sequences

Huan Nguyen-Kim

Huan Nguyen-Kim

Laboratoire de Recherche en Sciences Végétales, UMR 5546, UPS, Université de Toulouse, BP 42617 Castanet-Tolosan, France

UMR 5546, CNRS, BP 42617 Castanet-Tolosan, France

Search for more papers by this author
Hélène San Clemente

Hélène San Clemente

Laboratoire de Recherche en Sciences Végétales, UMR 5546, UPS, Université de Toulouse, BP 42617 Castanet-Tolosan, France

UMR 5546, CNRS, BP 42617 Castanet-Tolosan, France

Search for more papers by this author
Thierry Balliau

Thierry Balliau

CNRS, PAPPSO, UMR 0320/UMR 8120 Génétique Végétale Quantitative et Evolution, Le Moulon, Gif sur Yvette, France

INRA, PAPPSO, UMR 0320/UMR 8120 Génétique Végétale Quantitative et Evolution, Le Moulon, Gif sur Yvette, France

Search for more papers by this author
Michel Zivy

Michel Zivy

CNRS, PAPPSO, UMR 0320/UMR 8120 Génétique Végétale Quantitative et Evolution, Le Moulon, Gif sur Yvette, France

INRA, PAPPSO, UMR 0320/UMR 8120 Génétique Végétale Quantitative et Evolution, Le Moulon, Gif sur Yvette, France

Search for more papers by this author
Christophe Dunand

Christophe Dunand

Laboratoire de Recherche en Sciences Végétales, UMR 5546, UPS, Université de Toulouse, BP 42617 Castanet-Tolosan, France

UMR 5546, CNRS, BP 42617 Castanet-Tolosan, France

Search for more papers by this author
Cécile Albenne

Cécile Albenne

Laboratoire de Recherche en Sciences Végétales, UMR 5546, UPS, Université de Toulouse, BP 42617 Castanet-Tolosan, France

UMR 5546, CNRS, BP 42617 Castanet-Tolosan, France

Search for more papers by this author
Elisabeth Jamet

Corresponding Author

Elisabeth Jamet

Laboratoire de Recherche en Sciences Végétales, UMR 5546, UPS, Université de Toulouse, BP 42617 Castanet-Tolosan, France

UMR 5546, CNRS, BP 42617 Castanet-Tolosan, France

Correspondence: Dr. Elisabeth Jamet, Laboratoire de Recherche en Sciences Végétales, UMR 5546, UPS/CNRS, Université de Toulouse, BP 42617, F 31326, Castanet-Tolosan, France

E-mail: [email protected]

Fax: +33(0)534-32-38-02

Search for more papers by this author
First published: 17 November 2015
Citations: 40

Colour Online: See the article online to view Figs. 1–4 in colour.

Abstract

Plant cell walls (CWs) contain a large proportion of polysaccharides (90–95% of CW mass) and proteins (5–10%) that play major roles in CW plasticity during development and in response to environmental cues. Here, we present CW proteomics data of Arabidopsis thaliana roots. Plants were cultivated in hydroponic conditions. CW protein (CWP) extracts were prepared and analyzed in two different ways in order to enlarge the coverage of the root CW proteome: proteins were analyzed either directly or following an affinity chromatography on a combinatorial peptide ligand library (CPLL) to reduce the concentration dynamic range. Proteins were identified by LC-MS/MS and bioinformatics. Altogether, 424 proteins having predicted signal peptides have been identified (CWPs). CPLL permitted to identify low-abundant CWPs never described before, thus enlarging the coverage of the root CW proteome. The number of oxidoreductases is particularly high and includes a large collection of class III peroxidases (CIII Prxs; 38 out of the 73 A. thaliana CIII Prxs). For the first time, hydroxyproline residues were localized at conserved positions in CIII Prx amino acid sequences.