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Proteome-wide association studies identify biochemical modules associated with a wing size phenotype in Drosophila melanogaster
Okada, Hirokazu; Ebhardt, H. Alexander; Vonesch, Sibylle Chantal; Aebersold, Ruedi; Hafen, Ernst
The manner by which genetic diversity within a population generates individual phenotypes is a fundamental question of biology. To advance the understanding of the genotype–phenotype relationships towards the level of biochemical processes, we perform a proteome-wide association study (PWAS) of a complex quantitative phenotype. We quantify the variation of wing imaginal disc proteomes in Drosophila genetic reference panel (DGRP) lines using SWATH mass spectrometry. In spite of the very large genetic variation (1/36 bp) between the lines, proteome variability is surprisingly small, indicating strong molecular resilience of protein expression patterns. Proteins associated with adult wing size form tight co-variation clusters that are enriched in fundamental biochemical processes. Wing size correlates with some basic metabolic functions, positively with glucose metabolism but negatively with mitochondrial respiration and not with ribosome biogenesis. Our study highlights the power of PWAS to filter functional variants from the large genetic variability in natural populations. European Research Council SystemsX.ch Swiss National Science Foundation
Keyword(s): PWAS; Proteome; Genetic diversity
Publication Date:
2018
Type: Journal article
Peer-Reviewed: Unknown
Language(s): English
Contributor(s): Hafen, Ernst; Aebersold, Ruedi
Institution: University College Dublin
Publisher(s): Springer Nature
First Indexed: 2019-05-11 06:33:32 Last Updated: 2019-05-11 06:33:32