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Shotgun proteome profile of Populus developing xylem.

Identifieur interne : 003486 ( Main/Exploration ); précédent : 003485; suivant : 003487

Shotgun proteome profile of Populus developing xylem.

Auteurs : Udaya C. Kalluri [États-Unis] ; Gregory B. Hurst ; Patricia K. Lankford ; Priya Ranjan ; Dale A. Pelletier

Source :

RBID : pubmed:19743414

Descripteurs français

English descriptors

Abstract

Understanding the molecular pathways of plant cell wall biosynthesis and remodeling is central to interpreting biological mechanisms underlying plant growth and adaptation as well as leveraging that knowledge towards development of improved bioenergy feedstocks. Here, we report the application of shotgun MS/MS profiling to the proteome of Populus developing xylem. Nearly 6000 different proteins were identified from the xylem proteome. To identify low-abundance DNA-regulatory proteins from the developing xylem, a selective nuclear proteome profiling method was developed. Several putative transcription factors and chromatin remodeling proteins were identified using this method, such as NAC domain, CtCP-like and CHB3-SWI/SNF-related proteins. Public databases were mined to obtain information in support of subcellular localization, transcript-level expression and functional categorization of identified proteins. In addition to finding protein-level evidence of candidate cell wall biosynthesis genes from xylem (wood) tissue such as cellulose synthase, sucrose synthase and polygalacturonase, several other potentially new candidate genes in the cell wall biosynthesis pathway were discovered. Further application of such proteomics methods will aid in plant systems biology modeling efforts by enhancing the understanding not only of cell wall biosynthesis but also of other plant developmental and physiological pathways.

DOI: 10.1002/pmic.200800854
PubMed: 19743414


Affiliations:


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Le document en format XML

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<name sortKey="Kalluri, Udaya C" sort="Kalluri, Udaya C" uniqKey="Kalluri U" first="Udaya C" last="Kalluri">Udaya C. Kalluri</name>
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<nlm:affiliation>Environmental Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA. kalluriudayc@ornl.gov</nlm:affiliation>
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<term>Cell Wall (chemistry)</term>
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<term>Plant Proteins (genetics)</term>
<term>Populus (chemistry)</term>
<term>Populus (genetics)</term>
<term>Populus (growth & development)</term>
<term>Proteome (analysis)</term>
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<term>Tandem Mass Spectrometry (MeSH)</term>
<term>Transcription, Genetic (MeSH)</term>
<term>Xylem (chemistry)</term>
<term>Xylem (genetics)</term>
<term>Xylem (growth & development)</term>
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<term>Paroi cellulaire (composition chimique)</term>
<term>Populus (composition chimique)</term>
<term>Populus (croissance et développement)</term>
<term>Populus (génétique)</term>
<term>Protéines nucléaires (analyse)</term>
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<term>Protéines végétales (génétique)</term>
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<term>Protéome (génétique)</term>
<term>Protéomique (méthodes)</term>
<term>Spectrométrie de masse en tandem (MeSH)</term>
<term>Transcription génétique (MeSH)</term>
<term>Xylème (composition chimique)</term>
<term>Xylème (croissance et développement)</term>
<term>Xylème (génétique)</term>
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<term>Paroi cellulaire</term>
<term>Populus</term>
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<term>Populus</term>
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<term>Protéines végétales</term>
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<term>Transcription, Genetic</term>
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<div type="abstract" xml:lang="en">Understanding the molecular pathways of plant cell wall biosynthesis and remodeling is central to interpreting biological mechanisms underlying plant growth and adaptation as well as leveraging that knowledge towards development of improved bioenergy feedstocks. Here, we report the application of shotgun MS/MS profiling to the proteome of Populus developing xylem. Nearly 6000 different proteins were identified from the xylem proteome. To identify low-abundance DNA-regulatory proteins from the developing xylem, a selective nuclear proteome profiling method was developed. Several putative transcription factors and chromatin remodeling proteins were identified using this method, such as NAC domain, CtCP-like and CHB3-SWI/SNF-related proteins. Public databases were mined to obtain information in support of subcellular localization, transcript-level expression and functional categorization of identified proteins. In addition to finding protein-level evidence of candidate cell wall biosynthesis genes from xylem (wood) tissue such as cellulose synthase, sucrose synthase and polygalacturonase, several other potentially new candidate genes in the cell wall biosynthesis pathway were discovered. Further application of such proteomics methods will aid in plant systems biology modeling efforts by enhancing the understanding not only of cell wall biosynthesis but also of other plant developmental and physiological pathways.</div>
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