Title: on-rate
Long Title: IUPAC Gold Book - on-rate
DOI: 10.1351/goldbook.14172
Status: current

Definition
Rate of formation of the enzyme-substrate (\(\ce{ES}\)) or ligand–receptor (\(\ce{LR}\)) complex.

Source
- PAC, 2011, 83, 1129. 'Glossary of terms used in biomolecular screening (IUPAC Recommendations 2011)' on page 1150 (https://doi.org/10.1351/PAC-REC-09-05-03)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/14172/html
- json: https://goldbook.iupac.org/terms/view/14172/json
- xml: https://goldbook.iupac.org/terms/view/14172/xml

Citation: Citation: 'on-rate' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14172
License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.
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Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-05-11T09:49:05+00:00