ferredoxin 

https://doi.org/10.1351/goldbook.FT06771
A protein containing more than one iron and acid-labile sulfur, that displays electron-transfer activity but not classical enzyme function.
Source:
PAC, 1997, 69, 1251. (Glossary of terms used in bioinorganic chemistry (IUPAC Recommendations 1997)) on page 1275 [Terms] [Paper]
Citation: 'ferredoxin' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.FT06771 RIS BibTex EndNote
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Last revised: February 24, 2014