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UniProtKB annotation for enzymes (A) and pseudoenzyme (B) entries. (A) For active enzymes (example: UniProtKB O43293), UniProt provides information about catalytic activity, cofactor, kinetics, the type and position of sites important for the catalysis, and enzyme-related keywords in dedicated fields. (B) For pseudoenzymes (example: UniProtKB Q9C0I1), the lack of catalytic activity is explained in a “Caution” comment and reflected in the protein name using “inactive”.
