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'American Society for Biochemistry & Molecular Biology (ASBMB)'
Doi
Abstract
Quantitative mass spectrometry based spatial proteomics involves elaborate, expensive and time consuming experimental procedures and considerable effort is invested in the generation of such data. Multiple research groups have described a variety of approaches to establish high quality proteome-wide datasets. However, data analysis is as critical as data production for reliable and insightful biological interpretation, and no consistent and robust solutions have been offered to the community so far. Here, we introduce the requirements for rigorous spatial proteomics data analysis as well as the statistical machine learning methodologies needed to address them, including supervised and semi-supervised machine learning, clustering and novelty detection. We present freely available software solutions that implement innovative state-of-the-art analysis pipelines and illustrate these tools using several case studies, from multiple organisms, experimental designs, mass spectrometry platforms and quantitation techniques. We also propose sound analysis strategies to identify dynamic changes in sub-cellular localisation by comparing and contrasting data describing different biological conditions. We conclude by discussing future needs and developments in spatial proteomics data analysis
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