Title: major histocompatibility complex class I molecule Long Title: IUPAC Gold Book - major histocompatibility complex class I molecule DOI: 10.1351/goldbook.13431 Status: current Definition Surface protein encoded by the major histocompatibility complex (MHC) expressed on all nucleated cells, presenting antigen-derived peptides. Related Terms - antigen presentation: https://goldbook.iupac.org/terms/view/12887 - major histocompatibility complex (MHC): https://goldbook.iupac.org/terms/view/13430 Source - PAC, 2012, 84, 1113. 'IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)' on page 1209 (https://doi.org/10.1351/PAC-REC-11-06-03) Other Outputs - html: https://goldbook.iupac.org/terms/view/13431/html - json: https://goldbook.iupac.org/terms/view/13431/json - xml: https://goldbook.iupac.org/terms/view/13431/xml Citation: Citation: 'major histocompatibility complex class I molecule' 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.13431 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: 2026-05-10T08:17:45+00:00