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Retraction for Sorek et al., "Activation Status-Coupled Transient S Acylation Determines Membrane Partitioning of a Plant Rho-Related GTPase".
Mol Cell Biol
August 2017
Department of Plant Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.
The Arabidopsis COBRA protein facilitates cellulose crystallization at the plasma membrane.
J Biol Chem
December 2014
From the Energy Biosciences Institute, the Plant and Microbial Biology Department, and Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, 21589 Jeddah, Saudi Arabia.
Mutations in the Arabidopsis COBRA gene lead to defects in cellulose synthesis but the function of COBRA is unknown. Here we present evidence that COBRA localizes to discrete particles in the plasma membrane and is sensitive to inhibitors of cellulose synthesis, suggesting that COBRA and the cellulose synthase complex reside in close proximity on the plasma membrane. Live-cell imaging of cellulose synthesis indicated that, once initiated, cellulose synthesis appeared to proceed normally in the cobra mutant.
View Article and Find Full Text PDFActivation status-coupled transient S acylation determines membrane partitioning of a plant Rho-related GTPase.
Mol Cell Biol
March 2007
Department of Plant Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.
ROPs or RACs are plant Rho-related GTPases implicated in the regulation of a multitude of signaling pathways that function at the plasma membrane by virtue of posttranslational lipid modifications. The relationship between ROP activation status and membrane localization has not been established. Here we demonstrate that endogenous ROPs, as well as a transgenic His(6)-green fluorescent protein (GFP)-AtROP6 fusion protein, were partitioned between Triton X-100-soluble and -insoluble membranes.
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