ROOT PHOTOTROPISM2（RPT2）蛋白是拟南芥向光性反应的信号转导重要因子，定位在质膜上并与phot1形成复合物。 日本Niigata University的Tatsuya Sakai等的研究表明，光诱导的RPT2是拟南芥下胚轴向光性生长光感适应的基础，并且 rpt2 功能丧失突变体对极低强度蓝光显示出较高的光敏性【4】， 但是目前关于RPT2调控phot1功能的机制尚不清楚。

We found that RPT2 proteins are degraded via a ubiquitin-proteasome pathway when phot1 is inactive and are stabilized under blue light in a phot1-dependent manner. We propose that RPT2 is a molecular rheostat that maintains a moderate …

2022年1月7日 · Previous studies have shown that the proteins RPT2 (for ROOT PHOTOTROPISM2) and NPH3 (for NONPHOTOTROPIC HYPOCOTYL3) transduce signals downstream of phototropins to induce the phototropic response. However, the involvement of RPT2 and NPH3 in stomatal opening and in chloroplast relocation mediated by …

2000年2月1日 · A newly isolated gene, RPT2, controls one of these pathways. The RPT2 gene is light inducible; encodes a novel protein with putative phosphorylation sites, a nuclear localization signal, a BTB/POZ domain, and a coiled-coil domain; and belongs to a large gene family that includes the recently isolated NPH3 gene.

2021年10月21日 · RPT2 interacts with both phot1 and NPH3 31,32, it is proposed to influence NPH3 phosphorylation status and promote the reconstitution of the phot1–NPH3 complex to sustain signalling under higher...

2011年12月9日 · Through genetic analysis of the Arabidopsis thaliana gene pair encoding RPT2, we show that this subunit plays a critical role in 26S proteasome assembly, histone dynamics, and plant development. rpt2a rpt2b double null mutants are blocked in both male and female gamete transmission, demonstrating that the subunit is essential.

The plasma-membrane associated protein, ROOT PHOTOTROPISM 2 (RPT2) is a key signalling component involved in chloroplast accumulation movement, leaf positioning, and phototropism, all of which are regulated redundantly by the ultraviolet/blue light-activated AGC kinases phototropin 1 and 2 (phot1 and phot2).

2024年10月26日 · root phototropism2（rpt2）蛋白是拟南芥向光性反应的信号转导关键因子，定位在质膜上并与phot1形成复合物。 研究发现，光诱导的RPT2是拟南芥下胚轴向光性生长光感适应的基础，并且rpt2功能丧失突变体对极低强度蓝光显示出较高的光敏性。

2023年2月16日 · ROOT PHOTOTROPISM 2 (RPT2) is a key signalling component involved in chloroplast accumulation movement, leaf positioning, and phototropism, which are regulated by phototropin receptor kinases (phot1 ...

质膜相关蛋白 root phototropism 2 (rpt2) 是参与叶绿体积累运动、叶片定位和向光性的关键信号成分，所有这些都受到紫外线/蓝光激活的 agc 激酶趋光蛋白 1 和 2 的冗余调节（照片 1 和照片 2）。