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Literature DB >> 6960226

Altered genetic code in Paramecium mitochondria: possible evolutionary trends.

Abstract

The sequence and presumptive structure of a tRNA trp gene from Paramecium tetraaurelia are given. The gene is located 1,500 bp downstream from the 13S rRNA gene, in about the middle of the genome. Paramecium tRNA trp has a completely normal TpsiC loop and stem, however its anticodon (UCA) constitutes an alteration in the "universal" genetic code, similar to those seen in fungal and mammalian mitochondria. Most features of Paramecium tRNA trp resemble other mitochondrial counterparts; however, its sequence is more homologous to the "unaltered" tRNA trp (anticodon CCA) from E. coli. Paramecium mitochondria may resemble a primitive stage of organelle evolution.

Entities: Species

Mesh：

Substances：
DNA
RNA, Transfer

Year: 1982 PMID： 6960226 DOI： 10.1007/bf00331123

Source DB: PubMed Journal: Mol Gen Genet ISSN： 0026-8925

27 in total

1. Use of the UGA terminator as a tryptophan codon in yeast mitochondria.

Authors: G Macino; G Coruzzi; F G Nobrega; M Li; A Tzagoloff
Journal: Proc Natl Acad Sci U S A Date: 1979-08 Impact factor: 11.205

2. A different genetic code in human mitochondria.

Authors: B G Barrell; A T Bankier; J Drouin
Journal: Nature Date: 1979-11-08 Impact factor: 49.962

3. Tryptophan transfer RNA as the UGA suppressor.

Authors: D Hirsh
Journal: J Mol Biol Date: 1971-06-14 Impact factor: 5.469

4. Evolutionary change in 5S RNA secondary structure and a phylogenic tree of 54 5S RNA species.

Authors: H Hori; S Osawa
Journal: Proc Natl Acad Sci U S A Date: 1979-01 Impact factor: 11.205

5. The structure of the gene for the large subunit of ribulose 1,5-bisphosphate carboxylase from spinach chloroplast DNA.

Authors: G Zurawski; B Perrot; W Bottomley; P R Whitfeld
Journal: Nucleic Acids Res Date: 1981-07-24 Impact factor: 16.971

6. Evolution of rRNA and origin of mitochondria.

Authors: H Küntzel; H G Köchel
Journal: Nature Date: 1981-10-29 Impact factor: 49.962

7. Sequence and organization of the human mitochondrial genome.

Authors: S Anderson; A T Bankier; B G Barrell; M H de Bruijn; A R Coulson; J Drouin; I C Eperon; D P Nierlich; B A Roe; F Sanger; P H Schreier; A J Smith; R Staden; I G Young
Journal: Nature Date: 1981-04-09 Impact factor: 49.962

8. Organization and closing of mitochondrial deoxyribonucleic acid from Paramecium tetraaurelia and Paramecium primaurelia.

Authors: D J Cummings; J L Laping
Journal: Mol Cell Biol Date: 1981-11 Impact factor: 4.272

9. Assembly of the mitochondrial membrane system: sequences of yeast mitochondrial valine and an unusual threonine tRNA gene.

Authors: M Li; A Tzagoloff
Journal: Cell Date: 1979-09 Impact factor: 41.582

10. The Zea mays mitochondrial gene coding cytochrome oxidase subunit II has an intervening sequence and does not contain TGA codons.

Authors: T D Fox; C J Leaver
Journal: Cell Date: 1981-11 Impact factor: 41.582

8 in total

7. The cytochrome oxidase subunit I gene of Tetrahymena: a 57 amino acid NH2-terminal extension and a 108 amino acid insert.

Authors: Z Ziaie; Y Suyama
Journal: Curr Genet Date: 1987 Impact factor: 3.886

Review 8. Unique features of animal mitochondrial translation systems. The non-universal genetic code, unusual features of the translational apparatus and their relevance to human mitochondrial diseases.

Authors: Kimitsuna Watanabe
Journal: Proc Jpn Acad Ser B Phys Biol Sci Date: 2010 Impact factor: 3.493