Lipinski KA, et al. (2010) Maintenance and expression of the S. cerevisiae mitochondrial genome-From genetics to evolution and systems biology. Biochim Biophys Acta 1797(6-7):1086-1098
Abstract: As a legacy of their endosymbiotic eubacterial origin, mitochondria possess a residual genome, encoding only a few proteins and dependent on a variety of factors encoded by the nuclear genome for its maintenance and expression. As a facultative anaerobe with well understood genetics and molecular biology, S. cerevisiae is the model system of choice for studying nucleo-mitochondrial genetic interactions. Maintenance of the mitochondrial genome is controlled by a set of nuclear-coded factors forming intricately interconnected circuits responsible for replication, recombination, repair and transmission to buds. Expression of the yeast mitochondrial genome is regulated mostly at the post-transcriptional level, and involves many general and gene-specific factors regulating splicing, RNA processing and stability and translation. A very interesting aspect of the yeast mitochondrial system is the relationship between genome maintenance and gene expression. Deletions of genes involved in many different aspects of mitochondrial gene expression, notably translation, result in an irreversible loss of functional mtDNA. The mitochondrial genetic system viewed from the systems biology perspective is therefore very fragile and lacks robustness compared to the remaining systems of the cell. This lack of robustness could be a legacy of the reductive evolution of the mitochondrial genome, but explanations involving selective advantages of increased evolvability have also been postulated.CI - Copyright (c) 2009. Published by Elsevier B.V.
Type: Journal Article
PubMed ID: 20056105
Topics addressed in this paper
Number of different genes curated to this paper: 60
Jump to Summary Chart for:
To find other papers on a gene and topic, click on the colored ball in the appropriate box.
displays other papers with information about that topic for that gene.
displays other papers in SGD that are associated with that topic. The topic is addressed in these papers but does not describe a specific gene or chromosomal feature.
To go to the Locus page for a gene, click on the gene name.