Functional and Evolutionary Analysis of the CASPARIAN STRIP MEMBRANE DOMAIN PROTEIN Family 1[C][W]

Détails

ID Serval
serval:BIB_A7FE6477E1FB
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Functional and Evolutionary Analysis of the CASPARIAN STRIP MEMBRANE DOMAIN PROTEIN Family 1[C][W]
Périodique
Plant Physiology
Auteur(s)
Roppolo D., Boeckmann B., Pfister A., Boutet E., Rubio M.C., Dénervaud-Tendon V., Vermeer J.E.M., Gheyselinck J., Xenarios I., Geldner N.
ISSN
1532-2548 (Electronic)
ISSN-L
0032-0889
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
165
Numéro
4
Pages
1709-1722
Langue
anglais
Résumé
CASPARIAN STRIP MEMBRANE DOMAIN PROTEINS (CASPs) are four-membrane-span proteins that mediate the deposition of Casparian strips in the endodermis by recruiting the lignin polymerization machinery. CASPs show high stability in their membrane domain, which presents all the hallmarks of a membrane scaffold. Here, we characterized the large family of CASP-like (CASPL) proteins. CASPLs were found in all major divisions of land plants as well as in green algae; homologs outside of the plant kingdom were identified as members of the MARVEL protein family. When ectopically expressed in the endodermis, most CASPLs were able to integrate the CASP membrane domain, which suggests that CASPLs share with CASPs the propensity to form transmembrane scaffolds. Extracellular loops are not necessary for generating the scaffold, since CASP1 was still able to localize correctly when either one of the extracellular loops was deleted. The CASP first extracellular loop was found conserved in euphyllophytes but absent in plants lacking Casparian strips, an observation that may contribute to the study of Casparian strip and root evolution. In Arabidopsis (Arabidopsis thaliana), CASPL showed specific expression in a variety of cell types, such as trichomes, abscission zone cells, peripheral root cap cells, and xylem pole pericycle cells.
Pubmed
Web of science
Open Access
Oui
Création de la notice
11/07/2016 10:04
Dernière modification de la notice
20/08/2019 15:12
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