Jaquinod M, Villiers F, Kieffer-Jaquinod S, Hugouvieux V, Bruley C, Garin J, Bourguignon J. A Proteomics Approach Highlights a Myriad of Transporters in the Arabidopsis thaliana Vacuolar Membrane.
Plant Signal Behav 2007;
2:413-5. [PMID:
19704618 PMCID:
PMC2634231 DOI:
10.4161/psb.2.5.4415]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2007] [Accepted: 05/10/2007] [Indexed: 05/09/2023]
Abstract
To better understand plant vacuolar functions and identify new transporters present on the tonoplast, a proteomic work was initiated on Arabidopsis thaliana. A procedure was developed to prepare highly purified vacuoles from protoplasts isolated from Arabidopsis cell cultures, and a proteomics approach was designed to identify the protein components present in both the membrane and soluble fractions of the vacuoles. This procedure allowed the identification of 650 proteins, 2/3 of which copurify with the hydrophobic membrane fraction and 1/3 with the soluble fraction. With regard to function, only 20% of the proteins identified were previously known to be associated with vacuolar activities.
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