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Cellulose synthase interactive protein 1 (CSI1) links microtubules and cellulose synthase complexes.

ABSTRACT: 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.

SUBMITTER: Li S

PROVIDER: S-EPMC3252916 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature

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Cellulose synthase interactive protein 1 (CSI1) links microtubules and cellulose synthase complexes.

Li Shundai S Lei Lei L Somerville Chris R CR Gu Ying Y

Proceedings of the National Academy of Sciences of the United States of America 20111221 1

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 microtubul ...[more]

PMID: 22190487

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