
Structures and mechanisms of the Arabidopsis auxin transporter PIN3
2022年8月2日 · Arabidopsis thaliana PIN3 structures reveal the molecular mechanisms of the transport of indole-3-acetic acid and the inhibition of polar auxin transport by N-1-naphthylphthalamic acid.
PIN‐mediated polar auxin transport regulations in plant tropic ...
2021年7月13日 · In the early stages of lateral root emergence, PIN3 is expressed and symmetrically distributed at the plasma membrane of lateral root columella cells. Then, PIN3 quickly repolarizes to the bottom side to establish asymmetric auxin distribution and to …
生命之泉 | 顶端弯钩中生长素的极性运输 - 知乎
综合以上生长素输出载体和内运载体的研究结果,我们可以推测出一个顶端弯钩中生长素浓度梯度建立的模型:由于pin3,pin4和pin7的极性分布,使生长素由中柱向弯钩外侧的表皮细胞运输;随后,pins通过表皮细胞把生长素运至弯钩内侧;最后,弯钩内侧的aux1将 ...
PIN‐driven polar auxin transport in plant developmental plasticity…
2014年5月27日 · Important in auxin action is the family of PIN-FORMED (PIN) auxin transport proteins that generate auxin maxima and minima by driving polar cell-to-cell transport of auxin through their asymmetric subcellular distribution. Here, we review how regulatory proteins, the cytoskeleton, and membrane trafficking affect PIN expression and localization.
PID/WAG-mediated phosphorylation of the Arabidopsis PIN3 …
2018年7月6日 · Gravistimulation has been shown to induce changes in polar PIN3 localization in roots where PIN3 relocates towards the bottom side of the columella cells after the gravitropic...
Lateral relocation of auxin efflux regulator PIN3 mediates ... - Nature
2002年2月14日 · Our data indicate that PIN3 is a component of the lateral auxin transport system regulating tropic growth. In addition, actin-dependent relocalization of PIN3 in response to gravity provides a...
Plant Cell | 生长素极性运输和钙信号传导的新型调控因子CPK29
近日,韩国首尔大学 Hyung-Taeg Cho 教授团队在 The Plant Cell 杂志发表了题为 CALCIUM-DEPENDENT PROTEIN KINASE 29 modulates PIN-FORMED polarity and Arabidopsis development via its own phosphorylation code 的研究论文,通过蛋白互作筛选到一个可以磷酸化PIN蛋白HL结构域的钙信号相关蛋白 CPK29 (Ca2+-dependent protein kinase),并揭示了其影响PIN蛋白膜定位极性进而调控植物发育的重要功能。
拟南芥生长素转运蛋白 PIN3 的结构和机制,Nature - X-MOL
生长素转运蛋白的 PIN-FORMED (PIN) 蛋白家族介导极性生长素转运,在植物生长发育中起着至关重要的作用 1,2。 在这里,我们展示了来自 拟南芥 (AtPIN3) 的 PIN3 在 apo 状态下的低温电子显微镜结构,并与其底物吲哚-3-乙酸 (IAA) 和抑制剂 N形成复合物 -1-萘基邻苯二甲酸 (NPA),分辨率为 2.6–3.0 Å。 AtPIN3 作为同型二聚体存在,支架结构域中的跨膜螺旋 (TM) 1、2 和 7 参与二聚化。 二聚体 AtPIN3 在二聚体界面处形成一个大的、联合的面向细胞外的空腔,而每个亚基 …
Genetic screen for factors mediating PIN polarization in ...
2019年4月10日 · First gravity‐induced PIN 3 polarization to the bottom cell membranes leads to the auxin accumulation at the lower side of the organ, initiating bending and, later, auxin feedback‐mediated repolarization restores symmetric auxin distribution to terminate bending.
Polarization of PIN3-dependent auxin transport for hypocotyl ...
2011年5月13日 · Our data suggest that gravity-induced PIN3 polarization diverts the auxin flow to mediate the asymmetric distribution of auxin for gravitropic shoot bending. Plants display remarkable abilities to adapt their physiology and development in response to …
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