A plant mitochondrial gene encodes a protein involved in cytochrome c biogenesis.
Analysis of a transcribed region in the mitochondrial genome of Oenothera revealed an open reading frame (ORF) of 577 codons (orf577) that is also conserved in carrot, here encoding a protein of 579 amino acids (orf579). RNA editing alters the mRNA sequence of orf577 in Oenothera with 46 C to U transitions, many of which improve sequence similarity with the homologous Marchantia gene orf509. The deduced polypeptides show significant similarity with the ccl1-encoded protein involved in cytochrome c biogenesis in the photosynthetic bacterium Rhodobacter capsulatus. A highly conserved domain is also found in plastid ORFs, suggesting that these bacterial, chloroplast and mitochondrial genes encode polypeptides with analogous functions in assembly and maturation of cytochromes c.
Schuster
W
W
Institut für Genbiologische Forschung, Berlin, Germany.
Combettes
B
B
Flieger
K
K
Brennicke
A
A
D000595:Amino Acid Sequence; D001483:Base Sequence; D002736:Chloroplasts / Q000378:metabolism; D003574:Cytochrome c Group / Q000096:biosynthesis / Q000235:genetics*; D004272:DNA, Mitochondrial; D005798:Genes, Bacterial; D017343:Genes, Plant; D008928:Mitochondria / Q000201:enzymology*; D008969:Molecular Sequence Data; D016366:Open Reading Frames; D017393:RNA Editing; D015183:Restriction Mapping; D016354:Rhodobacter capsulatus / Q000235:genetics; D017386:Sequence Homology, Amino Acid; D014158:Transcription, Genetic
D003574:Cytochrome c Group; D004272:DNA, Mitochondrial