MeSH definition : Biologically active molecules which are covalently bound to the enzymes or binding
proteins normally acting on them. Binding occurs due to activation of the label by
ultraviolet light. These labels are used primarily to identify binding sites on proteins.;
Biologically active molecules which are covalently bound to the enzymes or binding
proteins normally acting on them. Binding occurs due to activation of the label by
ultraviolet light. These labels are used primarily to identify binding sites on proteins.