Genomic and metagenomic surveys of hydrogenase distribution indicate H2 is a widely utilised energy source for microbial growth and survival

C Greening, A Biswas, CR Carere, CJ Jackson… - The ISME …, 2016 - academic.oup.com
Recent physiological and ecological studies have challenged the long-held belief that
microbial metabolism of molecular hydrogen (H2) is a niche process. To gain a broader …

Proton transfer in the catalytic cycle of [NiFe] hydrogenases: insight from vibrational spectroscopy

PA Ash, R Hidalgo, KA Vincent - ACS catalysis, 2017 - ACS Publications
Catalysis of H2 production and oxidation reactions is critical in renewable energy systems
based around H2 as a clean fuel, but the present reliance on platinum-based catalysts is not …

Outer-sphere effects on the O2 sensitivity, catalytic bias and catalytic reversibility of hydrogenases

C Léger, V Fourmond, A Fasano - Chemical Science, 2024 - pubs.rsc.org
The comparison of homologous metalloenzymes, in which the same inorganic active site is
surrounded by a variable protein matrix, has demonstrated that residues that are remote …

Reversible glutamate coordination to high-valent nickel protects the active site of a [NiFe] hydrogenase from oxygen

CJ Kulka-Peschke, AC Schulz, C Lorent… - Journal of the …, 2022 - ACS Publications
NAD+-reducing [NiFe] hydrogenases are valuable biocatalysts for H2-based energy
conversion and the regeneration of nucleotide cofactors. While most hydrogenases are …

Oxygen-Tolerant H2 Production by [FeFe]-H2ase Active Site Mimics Aided by Second Sphere Proton Shuttle

ME Ahmed, S Dey, MY Darensbourg… - Journal of the American …, 2018 - ACS Publications
The instability of [FeFe]-H2ases and their biomimetics toward O2 renders them inefficient to
implement in practical H2 generation (HER). Previous investigations on synthetic models as …

Oxygen-tolerant proton reduction catalysis: much O 2 about nothing?

DW Wakerley, E Reisner - Energy & Environmental Science, 2015 - pubs.rsc.org
Proton reduction catalysts are an integral component of artificial photosynthetic systems for
the production of H2. This perspective covers such catalysts with respect to their tolerance …

Ultrafast 2D-IR spectroscopy of [NiFe] hydrogenase from E. coli reveals the role of the protein scaffold in controlling the active site environment

SLD Wrathall, B Procacci, M Horch, E Saxton… - Physical Chemistry …, 2022 - pubs.rsc.org
Ultrafast two-dimensional infrared (2D-IR) spectroscopy of Escherichia coli Hyd-1 (EcHyd-1)
reveals the structural and dynamic influence of the protein scaffold on the Fe (CO)(CN) 2 unit …

Understanding the structure and dynamics of hydrogenases by ultrafast and two-dimensional infrared spectroscopy

M Horch, J Schoknecht, SLD Wrathall… - Chemical …, 2019 - pubs.rsc.org
Hydrogenases are valuable model enzymes for sustainable energy conversion approaches
using H2, but rational utilization of these base-metal biocatalysts requires a detailed …

O2-tolerant [NiFe]-hydrogenases of Ralstonia eutropha H16: Physiology, molecular biology, purification, and biochemical analysis

O Lenz, L Lauterbach, S Frielingsdorf - Methods in enzymology, 2018 - Elsevier
Abstract Dioxygen-tolerant [NiFe]-hydrogenases are defined by their ability to catalyze the
reaction, H 2⇌ 2H++ 2e− even in the presence of O 2. Catalytic and probably also …

Comprehensive reaction mechanisms at and near the Ni–Fe active sites of [NiFe] hydrogenases

H Tai, Y Higuchi, S Hirota - Dalton Transactions, 2018 - pubs.rsc.org
[NiFe] hydrogenase (H2ase) catalyzes the oxidation of dihydrogen to two protons and two
electrons and/or its reverse reaction. For this simple reaction, the enzyme has developed a …