SMK6 mediates the C-to-U editing at multiple sites in maize mitochondria
作者: Shuo DingXin-Yuan LiuHong-Chun WangYong WangJiao-Jiao TangYan-Zhuo YangBao-Cai Tan
作者单位: 1Key Lab of Plant Development and Environment Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China
刊名: Journal of Plant Physiology, 2019, Vol.240
来源数据库: Elsevier Journal
DOI: 10.1016/j.jplph.2019.152992
关键词: SMK6PPR proteinMitochondriaEditingRIPs/MORFs
原始语种摘要: Abstract(#br)The recently identified PPR-E+/NVWA/DYW2 RNA editing complex provides insights into the mechanism of RNA editing in higher plant organelles. However, whether the complex works together with the previously identified editing factors RIPs/MORFs is unclear. In this paper, we identified a maize Smk6 gene, which encodes a mitochondrion-targeted PPR-E+protein with E1 and E2 domains at the C terminus. Loss of Smk6 function affects the C-to-U editing at nad1 -740, nad4L -110, nad7 -739, and mttB -138,139 sites, impairs mitochondrial activity and blocks embryogenesis and endosperm development. Genetic and molecular analysis indicated that SMK6 is the maize ortholog of the Arabidopsis SLO2, which is a component of the PPR-E+/NVWA/DYW2 editing complex. However, yeast two-hybrid analyses...
全文获取路径: Elsevier  (合作)
影响因子:2.699 (2012)

  • editing 编辑
  • maize 玉米
  • complex 超群
  • mitochondrion 线粒体
  • component 成分
  • protein 蛋白质
  • mitochondria 线粒体
  • endosperm 胚乳
  • targeted 对准目标的
  • unclear 不清楚的