...
首页> 外文期刊>Plant signaling & behavior >CGI-58, a key regulator of lipid homeostasis and signaling in plants, also regulates polyamine metabolism.
【24h】

CGI-58, a key regulator of lipid homeostasis and signaling in plants, also regulates polyamine metabolism.

机译:CGI-58是植物脂质体内稳态和信号传导的关键调节剂,它还调节多胺代谢。

获取原文
获取原文并翻译 | 示例
           

摘要

Comparative Gene Identification-58 (CGI-58) is an alpha / beta hydrolase-type protein that regulates lipid homeostasis and signaling in eukaryotes by interacting with and stimulating the activity of several different types of proteins, including a lipase in mammalian cells and a peroxisomal ABC transporter (PXA1) in plant cells. Here we show that plant CGI-58 also interacts with spermidine synthase 1 (SPDS1), an enzyme that plays a central role in polyamine metabolism by converting putrescine into spermidine. Analysis of polyamine contents in Arabidopsis thaliana plants revealed that spermidine levels were significantly reduced, and putrescine increased, in both cgi-58 and cgi-58/pxa1 mutant plants, relative to pxa1 mutant or wild-type plants. Evaluation of polyamine-related gene expression levels, however, revealed similar increases in transcript abundance in all mutants, including cgi-58, pxa1, and cgi-58/pxa1, in comparison to wild type. Taken together, the data support a model whereby CGI-58 and PXA1 contribute to the regulation of polyamine metabolism at the transcriptional level, perhaps through a shared lipid-signaling pathway, and that CGI-58 also acts independently of PXA1 to increase spermidine content at a post-transcriptional level, possibly through protein-protein interaction with SPDS1.CAS Registry Numbers 110-60-1 124-20-9
机译:比较基因识别-58(CGI-58)是一种α/β水解酶类型的蛋白,通过与几种不同类型的蛋白相互作用并刺激其活性来调节真核生物中的脂质稳态和信号传导,包括哺乳动物细胞中的脂肪酶和过氧化物酶体植物细胞中的ABC转运蛋白(PXA1)。在这里,我们显示植物CGI-58还与亚精胺合酶1(SPDS1)相互作用,该酶通过将腐胺转化为亚精胺而在多胺代谢中起着核心作用。拟南芥植物中多胺含量的分析表明,相对于pxa1突变体或野生型植物,cgi-58和cgi-58 / pxa1突变体植物中亚精胺的含量均显着降低,而腐胺含量则有所提高。然而,对多胺相关基因表达水平的评估显示,与野生型相比,所有突变体(包括cgi-58,pxa1和cgi-58 / pxa1)的转录本丰度都有相似的增加。综上所述,数据支持一个模型,其中CGI-58和PXA1可能通过共享的脂质信号通路在转录水平上调节多胺代谢,并且CGI-58也独立于PXA1发挥作用,从而增加了亚精胺的含量。转录后的水平,可能是通过蛋白质与SPDS1的蛋白质相互作用而产生的。CAS登记号110-60-1 124-20-9

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号