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

Shundai Li, Lei Lei, Chris R Somerville, Ying Gu

Center for LignoCellulose Structure and Formation, Department of Biochemistry and Molecular Biology, Pennsylvania State University, University Park, PA 16802, USA.

Proceedings of the National Academy of Sciences of the United States of America 2012 Jan 3

filter terms:

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.

Citation

Shundai Li, Lei Lei, Chris R Somerville, Ying Gu. Cellulose synthase interactive protein 1 (CSI1) links microtubules and cellulose synthase complexes. Proceedings of the National Academy of Sciences of the United States of America. 2012 Jan 3;109(1):185-90