Pentatricopeptide repeat (PPR) proteins as sequence-specificity factors in post-transcriptional processes in organelles

Biochem Soc Trans. 2007 Dec;35(Pt 6):1643-7. doi: 10.1042/BST0351643.


PPR (pentatricopeptide repeat) genes form a large family particularly prevalent in higher plants and targeted to organelles. They are involved in many post-transcriptional processes such as splicing, editing, processing and translation. Current data suggest that PPR proteins are involved in targeting effectors to the correct sites on the correct transcripts but the molecular mechanisms for RNA binding and effector recruitment by PPR proteins are not understood yet.

Publication types

  • Review

MeSH terms

  • Animals
  • Humans
  • Organelles / genetics*
  • Organelles / metabolism
  • Plant Development
  • Plant Proteins / genetics*
  • Plant Proteins / metabolism
  • Plants / genetics
  • Plants / metabolism
  • RNA Processing, Post-Transcriptional / genetics*
  • RNA, Plant / genetics
  • RNA, Plant / metabolism


  • Plant Proteins
  • RNA, Plant