在auxin反应中Aux/IAA蛋白的未解决的作用
Monika Kubalová1,2, Martina Schmidtová1, Matyáš Fendrych1,2
1Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czech Republic.
Physiologia plantarum
|April 23, 2025
概括
辅酶/英多尔-3-酸 (Aux/IAA) 蛋白通过控制基因转录来调节植物生长. 这篇评论探讨了它们的核,细胞质和细胞质的作用,强调了蛋白质的稳定性和信号网络动态.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 素/印醇-3-酸 (Aux/IAA) 蛋白质是植物发育的关键调节剂.
- 它们主要在核辅酶信号通路中起作用,控制基因转录.
- 它们的作用超越了核功能,涉及细胞质和细胞质的途径.
研究的目的:
- 审查Aux/IAA蛋白在auxin感知通路中的多方面的作用.
- 总结了解Aux/IAA蛋白稳定性调节方面的进展.
- 突出Aux/IAAs在非正规信号和环境反应中的参与.
主要方法:
- 文献综述了奥克辛信号研究的近期进展.
- 分析Aux/IAA蛋白在核,细胞质和细胞形成途径中的功能.
- 专注于翻译后调节和非正规的Aux/IAA角色.
主要成果:
- 辅助/IAA蛋白参与核,细胞质和细胞质细胞的辅助信号通路.
- 辅助/IAA稳定性的翻译后调节对于辅助素反应至关重要.
- 非正规的Aux/IAAs在转录和细胞增生信号传递中发挥作用.
- 辅助/IAAs影响TIR1/AFB受体活性和细胞质辅助素通路.
结论:
- 辅助蛋白/IAA蛋白是辅助蛋白驱动的发育和环境反应的中心媒介.
- 了解Aux/IAA动态是解读复杂的auxin信号网络的关键.
- 需要进一步的研究,以充分阐明辅助/IAA的不同角色.
相关概念视频
Cell Signaling in Plants
5.4K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.4K
Plant Hormones
23.1K
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
23.1K
Photosystem II
69.3K
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
69.3K
Regulation of the Unfolded Protein Response
2.3K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.3K
Role of Microtubules in Cell Wall Deposition
2.3K
Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
2.3K
RNA Polymerase II Accessory Proteins
9.0K
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
9.0K


