Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 109, Issue 1, Pages 185-190Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1118560109
Keywords
cell expansion; cellulose; cell walls
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Funding
- Department of Biochemistry and Molecular Biology, Pennsylvania State University
- National Science Foundation [1121375]
- Department of Energy [DOE-FG02-03ER20133]
- Center for LignoCellulose Structure and Formation
- Energy Frontier Research Center
- Department of Energy, Office of Science
- Div Of Molecular and Cellular Bioscience
- Direct For Biological Sciences [1121375] Funding Source: National Science Foundation
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Cellulose synthase (CESA) complexes can be observed by live-cell imaging to move with trajectories that parallel the underlying cortical microtubules. Here we report that CESA interactive protein 1 (CSI1) is a microtubule-associated protein that bridges CESA complexes and cortical microtubules. Simultaneous in vivo imaging of CSI1, CESA complexes, and microtubules demonstrates that the association of CESA complexes and cortical microtubules is dependent on CSI1. CSI1 directly binds to microtubules as demonstrated by in vitro microtubule-binding assay.
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