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A gene coding for an RPS2 protein is present in the mitochondrial genome of several cereals, but not in dicotyledons
- Source :
- Molecular and General Genetics MGG. 258:530-537
- Publication Year :
- 1998
- Publisher :
- Springer Science and Business Media LLC, 1998.
-
Abstract
- A gene coding for a protein that shows homologies to prokaryotic ribosomal protein S2 is present in the mitochondrial (mt) genome of wheat (Triticum aestivum). The wheat gene is transcribed as a single mRNA which is edited by C-to-U conversions at seven positions, all resulting in alteration of the encoded amino acid. Homologous gene sequences are also present in the mt genomes of rice and maize, but we failed to identify the corresponding sequences in the mtDNA of all dicotyledonous species tested; in these species the mitochondrial RPS2 is probably encoded in the nucleus. The protein sequence deduced from the wheat rps2 gene sequence has a long C-terminal extension when compared to other prokaryotic RPS2 sequences. This extension presents no similarity with any known sequence and is not conserved in the maize or rice mitochondrial rps2 gene. Most probably, after translation, this peptide extension is processed by a specific peptidase to give rise to the mature wheat mitochondrial RPS2.
- Subjects :
- Ribosomal Proteins
Mitochondrial DNA
DNA, Plant
Sequence analysis
Molecular Sequence Data
Restriction Mapping
Biology
Genes, Plant
MT-RNR1
DNA, Mitochondrial
Genome
HSPA2
Genetics
Amino Acid Sequence
RNA, Messenger
Cloning, Molecular
Molecular Biology
Gene
Triticum
HSPA9
Base Sequence
Sequence Homology, Amino Acid
food and beverages
Sequence Analysis, DNA
Plants
RNA, Plant
AKT1S1
RNA Editing
Edible Grain
Subjects
Details
- ISSN :
- 14321874 and 00268925
- Volume :
- 258
- Database :
- OpenAIRE
- Journal :
- Molecular and General Genetics MGG
- Accession number :
- edsair.doi.dedup.....07c08bac939c866759fd389c5591c60f