RT Journal Article SR Electronic T1 Critical Assessment of Metaproteome Investigation (CAMPI): A Multi-Lab Comparison of Established Workflows JF bioRxiv FD Cold Spring Harbor Laboratory SP 2021.03.05.433915 DO 10.1101/2021.03.05.433915 A1 Tim Van Den Bossche A1 Benoit J. Kunath A1 Kay Schallert A1 Stephanie S. Schäpe A1 Paul E. Abraham A1 Jean Armengaud A1 Magnus Ø. Arntzen A1 Ariane Bassignani A1 Dirk Benndorf A1 Stephan Fuchs A1 Richard J. Giannone A1 Timothy J. Griffin A1 Live H. Hagen A1 Rashi Halder A1 Céline Henry A1 Robert L. Hettich A1 Robert Heyer A1 Pratik Jagtap A1 Nico Jehmlich A1 Marlene Jensen A1 Catherine Juste A1 Manuel Kleiner A1 Olivier Langella A1 Theresa Lehmann A1 Emma Leith A1 Patrick May A1 Bart Mesuere A1 Guylaine Miotello A1 Samantha L. Peters A1 Olivier Pible A1 Pedro T. Queiros A1 Udo Reichl A1 Bernhard Y. Renard A1 Henning Schiebenhoefer A1 Alexander Sczyrba A1 Alessandro Tanca A1 Kathrin Trappe A1 Jean-Pierre Trezzi A1 Sergio Uzzau A1 Pieter Verschaffelt A1 Martin von Bergen A1 Paul Wilmes A1 Maximilian Wolf A1 Lennart Martens A1 Thilo Muth YR 2021 UL http://biorxiv.org/content/early/2021/08/17/2021.03.05.433915.abstract AB Metaproteomics has matured into a powerful tool to assess functional interactions in microbial communities. While many metaproteomic workflows are available, the impact of method choice on results remains unclear.Here, we carried out the first community-driven, multi-laboratory comparison in metaproteomics: the critical assessment of metaproteome investigation study (CAMPI). Based on well-established workflows, we evaluated the effect of sample preparation, mass spectrometry, and bioinformatic analysis using two samples: a simplified, laboratory-assembled human intestinal model and a human fecal sample.We observed that variability at the peptide level was predominantly due to sample processing workflows, with a smaller contribution of bioinformatic pipelines. These peptide-level differences largely disappeared at the protein group level. While differences were observed for predicted community composition, similar functional profiles were obtained across workflows.CAMPI demonstrates the robustness of present-day metaproteomics research, serves as a template for multi-laboratory studies in metaproteomics, and provides publicly available data sets for benchmarking future developments.Competing Interest StatementThe authors have declared no competing interest.