Analysis of NADH dehydrogenase proteins, ATPase subunit 9, cytochrome b, and ribosomal protein L14 encoded in the mitochondrial DNA of Paramecium

Nucleic Acids Res. 1990 Jan 11;18(1):163-71. doi: 10.1093/nar/18.1.163.

Abstract

The mitochondrial (mt) encoded ndh1, ndh3, ndh4, ndh5, rpl14, cyt b and atp9 gene products were identified by sequence comparisons with known proteins. Amino acid sequence comparisons between predicted Paramecium mt gene products and proteins in current databases were quantitated approximately by the means of similarity scores for pairs of aligned sequences. The comparisons show that the Paramecium gene products are very divergent from all others with the exception of those from a closely related ciliate, Tetrahymena. The similarity scores of comparisons between a Paramecium mt DNA encoded protein, cytochrome b for example, and the homologous protein from a group of organisms as diverse as other protozoans, vertebrates, fungi, plants, and prokaryotes were all about the same. The Paramecium gene products appear to be equally divergent from proteins representing a number of different kingdoms and organelles.

Publication types

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

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Cytochrome Reductases / genetics*
  • Cytochrome b Group / genetics*
  • DNA, Mitochondrial / genetics*
  • Genes
  • Molecular Sequence Data
  • NADH Dehydrogenase / genetics*
  • Paramecium / genetics*
  • Proton-Translocating ATPases / genetics*
  • Ribosomal Proteins / genetics

Substances

  • Cytochrome b Group
  • DNA, Mitochondrial
  • Ribosomal Proteins
  • ribosomal protein L14
  • Cytochrome Reductases
  • NADH Dehydrogenase
  • Proton-Translocating ATPases