Characterization and expression of a rice RAD23 gene

Plant Mol Biol. 1997 Jun;34(3):557-62. doi: 10.1023/a:1005870227632.

Abstract

In order to identify proteins that interact with plant transcriptional complexes, we performed a two-hybrid screen in yeast using a cDNA library from embryogenic rice suspension cultures and the plant transcriptional activator viviparous-1 (vp1) as 'bait'. In this screen, we detected an interaction between VP1 and a rice homologue of the Saccharomyces cerevisiae RAD23 gene (osRAD23). The RAD23 protein is associated with the general transcriptional machinery in yeast, and is believed to play a role in the processes of nucleotide excision repair in yeast and mammalian cells. This report is the first identification of a RAD23 homolog in plants. The osRAD23 amino acid sequence shares 50-60% similarity throughout its length with RAD23 sequences from yeast, mice, and man. osRAD23 contains a characteristic ubiquitin-like domain at its N-terminus, which is similar to other RAD23 genes. Analysis of the expressed sequence tag database identifies two different classes of RAD23 genes in both Arabidopsis and rice. Southern analysis of rice genomic DNA indicated the presence of at least two RAD23-like genes. A single transcript (1.5 kb) of osRAD23 was detected in total RNA from rice embryonic tissue, while three transcripts (1.8, 1.5 and 1.0 kb) were observed in total RNA from vegetative tissues of rice.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • DNA-Binding Proteins / biosynthesis*
  • DNA-Binding Proteins / chemistry
  • DNA-Binding Proteins / genetics
  • Gene Expression
  • Gene Library
  • Genes, Plant*
  • Humans
  • Mammals
  • Mice
  • Molecular Sequence Data
  • Oryza / genetics
  • Oryza / metabolism*
  • Plant Proteins / biosynthesis*
  • Plant Proteins / chemistry
  • Plant Proteins / genetics
  • Saccharomyces cerevisiae / genetics
  • Sequence Alignment
  • Sequence Homology, Amino Acid
  • Transcription, Genetic

Substances

  • DNA-Binding Proteins
  • Plant Proteins

Associated data

  • GENBANK/D24734
  • GENBANK/P05506
  • GENBANK/P32628
  • GENBANK/S16263
  • GENBANK/S44346
  • GENBANK/S44443
  • GENBANK/T20487
  • GENBANK/T76856
  • GENBANK/U63530
  • GENBANK/X92410
  • GENBANK/X92411