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. Author manuscript; available in PMC: 2021 Apr 6.
Published in final edited form as: Nat Rev Chem. 2020 Jul 22;4(10):542–549.

Fig. 1 |. The [FeFe] hydrogenase H-cluster and its biosynthetic origins.

Fig. 1 |

a | The present model of the [FeFe] hydrogenase H-cluster bioassembly accounts for the molecular origins of all atoms in the [2Fe]H subcluster. b | The X-ray structure of the H-cluster in Clostridium pasteurianum [FeFe] hydrogenase (CpI) (Protein Data Bank identifier: 4XDC)9. SAM, S-adenosylmethionine.