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Journal / Buchreihe / Preprint-Server Nach Häufigkeit alphabetisch sortiert: Biol. Chem
Journal / Buchreihe / Preprint-Server Nach Häufigkeit alphabetisch sortiert: ACS Chem. Biol doi: 10.1021/cb900269u
Journal / Buchreihe / Preprint-Server Nach Häufigkeit alphabetisch sortiert: J Gen Plant Pathol
Journal / Buchreihe / Preprint-Server Nach Häufigkeit alphabetisch sortiert: Biocell
Journal / Buchreihe / Preprint-Server Nach Häufigkeit alphabetisch sortiert: BMC Plant Biol.
Journal / Buchreihe / Preprint-Server Nach Häufigkeit alphabetisch sortiert: Meth Enzymol
Journal / Buchreihe / Preprint-Server Nach Häufigkeit alphabetisch sortiert: Biol. Chem
Journal / Buchreihe / Preprint-Server Nach Häufigkeit alphabetisch sortiert: Curr. Biol.
Autor Nach Häufigkeit alphabetisch sortiert: Stamm, G.
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Zang, J.; Klemm, S.; Pain, C.; Duckney, P.; Bao, Z.; Stamm, G.; Kriechbaumer, V.; Bürstenbinder, K.; Hussey, P. J.; Wang, P.; A novel plant actin-microtubule bridging complex regulates cytoskeletal and ER structure at ER-PM contact sites Curr. Biol. 31, 1251-1260, (2021) DOI: 10.1016/j.cub.2020.12.009
In plants, the cortical endoplasmic reticulum (ER) network is connected to the plasma membrane (PM) through the ER-PM contact sites (EPCSs), whose structures are maintained by EPCS resident proteins and the cytoskeleton.1-7 Strong co-alignment between EPCSs and the cytoskeleton is observed in plants,1,8 but little is known of how the cytoskeleton is maintained and regulated at the EPCS. Here, we have used a yeast-two-hybrid screen and subsequent in vivo interaction studies in plants by fluorescence resonance energy transfer (FRET)-fluorescence lifetime imaging microscopy (FLIM) analysis to identify two microtubule binding proteins, KLCR1 (kinesin-light-chain-related protein 1) and IQD2 (IQ67-domain 2), that interact with the actin binding protein NET3C and form a component of plant EPCS that mediates the link between the actin and microtubule networks. The NET3C-KLCR1-IQD2 module, acting as an actin-microtubule bridging complex, has a direct influence on ER morphology and EPCS structure. Their loss-of-function mutants, net3a/NET3C RNAi, klcr1, or iqd2, exhibit defects in pavement cell morphology, which we suggest is linked to the disorganization of both actin filaments and microtubules. In conclusion, our results reveal a novel cytoskeletal-associated complex, which is essential for the maintenance and organization of cytoskeletal structure and ER morphology at the EPCS and for normal plant cell morphogenesis.