bookmark RedoxDB forum (1) Provides information about protein oxidative modification verified by experimental studies. For each modified cysteine, the exact position, modification type and flanking sequence are provided. Additional information, including gene name, organism, sequence, literature references and links to UniProt and PDB, is also supplied. The database supports several functions including data search, blast and browsing. RedoxDB not only includes data from case-by-case studies but also integrates high-throughput data from proteomics studies. RedoxDB is useful for both experimental studies and computational analyses of protein oxidative modification.