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Cheng, Y. ; Perocchi, F.

Prediction of mitochondrial protein function by comparative physiology and phylogenetic profiling.

Methods Mol. Biol. 1264, 321-329 (2015)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
According to the endosymbiotic theory, mitochondria originate from a free-living alpha-proteobacteria that established an intracellular symbiosis with the ancestor of present-day eukaryotic cells. During the bacterium-to-organelle transformation, the proto-mitochondrial proteome has undergone a massive turnover, whereby less than 20 % of modern mitochondrial proteomes can be traced back to the bacterial ancestor. Moreover, mitochondrial proteomes from several eukaryotic organisms, for example, yeast and human, show a rather modest overlap, reflecting differences in mitochondrial physiology. Those differences may result from the combination of differential gain and loss of genes and retargeting processes among lineages. Therefore, an evolutionary signature, also called "phylogenetic profile", could be generated for every mitochondrial protein. Here, we present two evolutionary biology approaches to study mitochondrial physiology: the first strategy, which we refer to as "comparative physiology," allows the de novo identification of mitochondrial proteins involved in a physiological function; the second, known as "phylogenetic profiling," allows to predict protein functions and functional interactions by comparing phylogenetic profiles of uncharacterized and known components.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Comparative Genomics ; Comparative Physiology ; Mitochondrial Evolution ; Orthology ; Phylogenetic Profiling
ISSN (print) / ISBN 1064-3745
e-ISSN 1940-6029
Conference Title Mitochondrial Medicine
Journal Methods in Molecular Biology
Quellenangaben Volume: 1264, Issue: , Pages: 321-329 Article Number: , Supplement: ,
Publisher Springer
Publishing Place Berlin [u.a.]
Reviewing status Peer reviewed
Institute(s) Institute of Diabetes and Obesity (IDO)