The rps4 gene in sugar beet mitochondria: Insertion/deletion mutations occur within the gene but do not disrupt the reading frame

Noriko Itchoda, Tomohiko Kubo, Amy Estiati, Masayuki P. Yamamoto, Hirokazu Handa, Tetsuo Mikami*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We have characterized a sugar beet mitochondrial gene, rps4, which is co-transcribed with the downstream gene nad6. The sugar beet RPS4 polypeptide has two deletions of 8 and 49 amino acid residues and a duplication of 14 residues in the middle of the reading frame, relative to the rapeseed and rice homologues. Nevertheless, transcripts of the rps4 were observed to be edited at 10 nucleotides, suggesting that the sugar beet rps4 is functional. Western blot analysis identified the translation product of 33kDa. The extensive rearrangements in rps4 were also found in spinach but not in pea, green pepper and rose.

Original languageEnglish
Pages (from-to)211-215
Number of pages5
JournalJournal of Plant Physiology
Volume159
Issue number2
DOIs
StatePublished - 2002

Keywords

  • Gene expression
  • Insertions/deletions
  • Mitochondria
  • Rps4
  • Sugar beet

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

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