4IUD:
reference: Reversible [4Fe-3S] cluster morphing in an O2-tolerant [NiFe] hydrogenase., Frielingsdorf S, Fritsch J, Schmidt A, Hammer M, Lowenstein J, Siebert E, Pelmenschikov V, Jaenicke T, Kalms J, Rippers Y, Lendzian F, Zebger I, Teutloff C, Kaupp M, Bittl R, Hildebrandt P, Friedrich B, Lenz O, Scheerer P, Nat Chem Biol. 2014 May;10(5):378-85. doi: 10.1038/nchembio.1500. Epub 2014 Apr, 6. PMID: 24705592

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