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   Articles with "fefe hydrogenases" as a keyword



Tertiary phosphine‐supported diiron model complexes relevant to [FeFe]‐hydrogenases

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recommendations! Published in 2024 at "Applied Organometallic Chemistry"

DOI: 10.1002/aoc.7608

Abstract: In an effort to better probe the structure–function relationship on the biological [Fe4S4] cluster of [FeFe]‐hydrogenases, a new library of tertiary phosphine‐supported diiron dithiolate complexes [Fe2(μ‐adtNR)(CO)5{P(C6H4X)3}] (1–3) with various substituents (X = F vs. H vs. Me),… read more here.

Keywords: phosphine supported; tertiary phosphine; fefe hydrogenases; diiron model ... See more keywords

Artificial water-soluble systems inspired by [FeFe]-hydrogenases for electro- and photocatalytic hydrogen production

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recommendations! Published in 2020 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2019.11.206

Abstract: Abstract [FeFe]-hydrogenases efficiently catalyze the hydrogen evolution reactions (HERs) at rates of up to 104 s−1 with low overpotentials in aqueous media. Although the small-molecule diiron mimetics of the active site of [FeFe]-hydrogenases have been… read more here.

Keywords: fefe hydrogenases; systems inspired; water soluble; soluble systems ... See more keywords

The H-cluster of [FeFe] Hydrogenases: Its Enzymatic Synthesis and Parallel Inorganic Semisynthesis

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recommendations! Published in 2024 at "Accounts of Chemical Research"

DOI: 10.1021/acs.accounts.4c00231

Abstract: Conspectus Nature’s prototypical hydrogen-forming catalysts—hydrogenases—have attracted much attention because they catalyze hydrogen evolution at near zero overpotential and ambient conditions. Beyond any possible applications in the energy sphere, the hydrogenases feature complicated active sites, which… read more here.

Keywords: fefe hydrogenases; cluster; biosynthesis; synthesis ... See more keywords

[Fe2(μ-S2)(CN)2(CO)4]2-, [Fe2(μ-SH)2(CN)2(CO)4]2-, and [Fe2(μ-SH)(μ-SCH2NH2)(CN)2(CO)4]2- Related to the Biosynthesis of the [2Fe]H Site of the [FeFe]Hydrogenases.

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recommendations! Published in 2025 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.5c03496

Abstract: This paper discusses diiron complexes implicated as intermediates in the biosynthesis of the [2Fe]H site of the [FeFe]-hydrogenases. These complexes include [Fe2(μ-SH)(μ-SR)(CN)2(CO)4]2- (R = H, CH2NH2 [2H,R]2-), which are available from the new precursor [Fe2(μ-S2)(CN)2(CO)4]2-… read more here.

Keywords: fe2; fe2 fe2; fefe hydrogenases; 2fe site ... See more keywords

A Conserved Binding Pocket in HydF is Essential for Biological Assembly and Coordination of the Diiron Site of [FeFe]-Hydrogenases.

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recommendations! Published in 2024 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.4c01635

Abstract: The active site cofactor of [FeFe]-hydrogenases consists of a cubane [4Fe-4S]-cluster and a unique [2Fe-2S]-cluster, harboring unusual CO- and CN--ligands. The biosynthesis of the [2Fe-2S]-cluster requires three dedicated maturation enzymes called HydG, HydE and HydF.… read more here.

Keywords: fefe hydrogenases; cluster; 2fe precursor; site ... See more keywords

Thermodynamic Hydricity of [FeFe]-Hydrogenases.

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recommendations! Published in 2019 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.8b13084

Abstract: After remaining elusive for many years, terminal hydride states have now been identified in several native and mutant [FeFe]-hydrogenases. In this Perspective, hydride states of [FeFe]-hydrogenases are considered on the basis of hydricity, a thermodynamic… read more here.

Keywords: hydride; fefe hydrogenases; hydricity; thermodynamic hydricity ... See more keywords
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Shedding light on proton and electron dynamics in [FeFe] hydrogenases.

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recommendations! Published in 2020 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.9b13075

Abstract: [FeFe] hydrogenases are highly efficient catalysts for reversible dihydrogen evolution. H2 turnover involves different catalytic intermediates including a recently characterized hydride state of the active site (H-cluster). Applying cryogenic infrared and electron paramagnetic resonance spectroscopy… read more here.

Keywords: electron dynamics; fefe hydrogenases; electron; proton electron ... See more keywords

Accumulating the hydride state in the catalytic cycle of [FeFe]-hydrogenases

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recommendations! Published in 2017 at "Nature Communications"

DOI: 10.1038/ncomms16115

Abstract: H2 turnover at the [FeFe]-hydrogenase cofactor (H-cluster) is assumed to follow a reversible heterolytic mechanism, first yielding a proton and a hydrido-species which again is double-oxidized to release another proton. Three of the four presumed… read more here.

Keywords: state; fefe hydrogenases; hydride state; state catalytic ... See more keywords

Air-stable [FeFe] hydrogenases

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recommendations! Published in 2018 at "Nature Catalysis"

DOI: 10.1038/s41929-018-0137-y

Abstract: Hydrogenases are appealing catalysts for fuel cells, as these highly efficient H2-oxidation enzymes do not contain expensive precious metals and operate under very mild and safe conditions. Unfortunately, [FeFe] hydrogenases — the most active class… read more here.

Keywords: fuel cells; coordination; fefe hydrogenases; air ... See more keywords

Binding of exogenous cyanide reveals new active-site states in [FeFe] hydrogenases

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recommendations! Published in 2023 at "Chemical Science"

DOI: 10.1039/d2sc06098a

Abstract: [FeFe] hydrogenases are highly efficient metalloenyzmes for hydrogen conversion. Their active site cofactor (the H-cluster) is composed of a canonical [4Fe-4S] cluster ([4Fe-4S]H) linked to a unique organometallic di-iron subcluster ([2Fe]H). In [2Fe]H the two… read more here.

Keywords: new active; binding exogenous; site states; active site ... See more keywords

Crystallographic and spectroscopic assignment of the proton transfer pathway in [FeFe]-hydrogenases.

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recommendations! Published in 2018 at "Nature Communications"

DOI: 10.2210/pdb6gm1/pdb

Abstract: The unmatched catalytic turnover rates of [FeFe]-hydrogenases require an exceptionally efficient proton-transfer (PT) pathway to shuttle protons as substrates or products between bulk water and catalytic center. For clostridial [FeFe]-hydrogenase CpI such a pathway has… read more here.

Keywords: fefe hydrogenases; proton; proton transfer; transfer pathway ... See more keywords