P450Rdb: A manually curated database of reactions catalyzed by cytochrome P450 enzymes

•P450Rdb compiles a comprehensive catalog of over 1,600 reactions catalyzed by P450s.•P450Rdb has collected a diverse collection of more than 590 P450s from over 200 species.•P450Rdb systematically organizes all reactions based on their chemical reaction type and site.•P450Rdb provides a user-friendly interface on P450s and their associated reactions.•P450Rdb is beneficial for research in synthetic biology, pharmacology, and the chemical industry.