期刊
DEVELOPMENT
卷 134, 期 5, 页码 967-977出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/dev.02792
关键词
ARP2-ARP3; actin; SCAR/ WAVE; trichomes; Arabidopsis
资金
- Biotechnology and Biological Sciences Research Council [BB/C516601/1] Funding Source: Medline
- Medical Research Council [G117/569] Funding Source: Medline
- Biotechnology and Biological Sciences Research Council [BB/C516601/1] Funding Source: researchfish
- Medical Research Council [G117/569] Funding Source: researchfish
- MRC [G117/569] Funding Source: UKRI
The actin-nucleating ARP2-ARP3 complex controls cell shape in plants in many different cell types. Its activity is controlled by a multimeric complex containing BRK1 (also known as HSPC300), NAP1, SRA1, ABI and SCAR/WAVE. In this study, we focus on the function of the five putative SCAR homologues in Arabidopsis and we provide biochemical evidence that AtSCAR2 can activate the ARP2-ARP3 complex in vitro. Among the single mutants, mutations in only AtSCAR2 result in a subtle or weak phenotype similar to ARP2, ARP3 and other 'distorted' mutants. Double-mutant analysis revealed a redundancy with AtSCAR4. Systematic application of the yeast two-hybrid system and Bimolecular Fluorescence Complementation (BiFC) revealed a complex protein-interaction network between the ARP2-ARP3 complex and its genetically defined regulators. In addition to protein interactions known in other systems, we identified several new interactions, suggesting that SPIKE1 may be an integral component of the SCAR/WAVE complex and that SCAR proteins in plants might act as direct effectors of ROP GTPases.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据