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ProteomeXchange and PRIDE: Making proteomics data accessible and reusable

Compared to other data intensive disciplines such as genomics, public deposition and storage of mass spectrometry (MS)-based proteomics data is still less developed due to, among other reasons, the inherent complexity of the data and the variety of data types and experimental workflows. In order to address this need several public repositories for MS proteomics experiments have been developed, each with different purposes in mind. The most established resources are the Global Proteome Machine Database (GPMDB), PeptideAtlas and the PRoteomics IDEntifications (PRIDE) database. Additionally, there are other useful (in many cases recently developed) resources such as ProteomicsDB, MassIVE, Chorus, MaxQB, PASSEL, MOPED and the Human Proteinpedia. In addition, the ProteomeXchange consortium has been recently developed for enabling a better integration of public repositories and the coordinated sharing of proteomics information, maximizing its benefit to the scientific community. Here, we will review each of the major proteomics resources independently and some tools that enable the integration, mining and reuse of the data. We will also discuss some of the major challenges and current pitfalls in the integration and sharing of the data.