Title: entatic state
Long Title: IUPAC Gold Book - entatic state
DOI: 10.1351/goldbook.ET06763
Status: current

Definition
A state of an atom or group which, due to its binding in a protein, has its geometric or electronic condition adapted for function.

Note
It is derived from entasis (Greek), meaning tension.

Source
- PAC, 1997, 69, 1251. 'Glossary of terms used in bioinorganic chemistry (IUPAC Recommendations 1997)' on page 1272 (https://doi.org/10.1351/pac199769061251)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/ET06763/html
- json: https://goldbook.iupac.org/terms/view/ET06763/json
- xml: https://goldbook.iupac.org/terms/view/ET06763/xml

Citation: Citation: 'entatic state' 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.ET06763
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.
Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .
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: 2026-05-10T01:12:40+00:00