Martijn Huijnen, theme Mitochondrial diseases, and colleagues developed COmplexome Profiling ALignment (COPAL) to systematically asses the effect of Barth syndome on mitochondrial protein complexes.They published their findings in Bioinformatics.
Complexome profiling combines native gel electrophoresis with mass spectrometry to obtain the inventory, composition and abundance of multiprotein assemblies in an organelle. Applying complexome profiling to determine the effect of a mutation on protein complexes requires separating technical and biological variations from the variations caused by that mutation.
They have developed the COmplexome Profiling ALignment (COPAL) tool that aligns multiple complexome profiles with each other. It includes the abundance profiles of all proteins on two gels, using a multidimensional implementation of the dynamic time warping algorithm to align the gels. Subsequent progressive alignment allows them to align multiple profiles with each other. They tested COPAL on complexome profiles from control mitochondria and from Barth syndrome (BTHS) mitochondria, which have a mutation in tafazzin gene that is involved in remodelling the inner mitochondrial membrane phospholipid cardiolipin. By comparing the variation between BTHS mitochondria and controls with the variation among either, they assessed the effects of BTHS on the abundance profiles of individual proteins. Combining those profiles with gene set enrichment analysis allows detecting significantly affected protein complexes. Most of the significantly affected protein complexes are located in the inner mitochondrial membrane (MICOS, prohibitins), or are attached to it (the large ribosomal subunit).
Related news items
A personal touch of Jaap ten Oever20 June 2019
In order to promote interaction amongst colleagues within RIMLS, we have a ‘personal touch’ series setting employees in the spotlight. A light-hearted manner to learn about the colleagues you know and those you don’t. This week: Jaap ten Oever.read more
Radboudumc Master Prize for Mark van Goor18 June 2019
Mark van Goor, theme Renal disorders, received the Radboudumc Master Prize for his MSc thesis entitled “High-resolution structure of the renal calcium channel TRPV5 revealed with cryo-EM”, which was based on his internship at the lab of Prof. Yifan Cheng, USA.read more
Pathogenic fungus can make artificial leather waterproof18 June 2019
Paul Verweij and Sybren de Hoog, theme Infectious diseases and global health, won the Bio Art & Design Award to further develop the development of waterproof synthetic leather.read more
A warm welcome for Hypatia fellow Daniele Tauriello18 June 2019
It is our pleasure to welcome a new research group leader and Hypatia fellow at RIMLS: Daniele Tauriello (dept Cell Biology).read more
Exome sequencing in routine diagnostics: a generic test for 254 patients with primary immunodeficiencies18 June 2019
Exome sequencing may provide a genetic diagnosis in a significant number of patients in a single genetic test. Alexander Hoischen and Mihai Netea, theme Infectious diseases and global health, and colleagues, published their results in Genome Medicine.read more
Lowering cholesterol is not enough to reduce hyperactivity of the immune system14 June 2019
In Cell Metabolism, Siroon Bekkering, theme Vascular damage, and colleagues, provide a novel potential explanation for the residual cardiovascular risk, related to persistent activation of the immune system in patients with hypercholesterolemia who are treated with statins.read more