How manganese empowered life with dioxygen (and vice versa)

UF Lingappa, DR Monteverde, JS Magyar… - Free Radical Biology …, 2019 - Elsevier
Throughout the history of life on Earth, abiotic components of the environment have shaped
the evolution of life, and in turn life has shaped the environment. The element manganese …

Biogenic manganese oxide nanoparticle formation by a multimeric multicopper oxidase Mnx

CA Romano, M Zhou, Y Song, VH Wysocki… - Nature …, 2017 - nature.com
Bacteria that produce Mn oxides are extraordinarily skilled engineers of nanomaterials that
contribute significantly to global biogeochemical cycles. Their enzyme-based reaction …

Mn (II) oxidation by the multicopper oxidase complex Mnx: a coordinated two-stage Mn (II)/(III) and Mn (III)/(IV) mechanism

AV Soldatova, CA Romano, L Tao… - Journal of the …, 2017 - ACS Publications
The bacterial manganese oxidase MnxG of the Mnx protein complex is unique among
multicopper oxidases (MCOs) in carrying out a two-electron metal oxidation, converting Mn …

Mn (II) oxidation by the multicopper oxidase complex Mnx: a binuclear activation mechanism

AV Soldatova, L Tao, CA Romano… - Journal of the …, 2017 - ACS Publications
The bacterial protein complex Mnx contains a multicopper oxidase (MCO) MnxG that,
unusually, catalyzes the two-electron oxidation of Mn (II) to MnO2 biomineral, via a Mn (III) …

Biogenic Manganese Oxide Synthesized by a Marine Bacterial Multicopper Oxidase MnxG Reveals Oxygen Evolution Activity

W Fu, FP Hyler, J Sanchez, TF Jaramillo… - ACS …, 2024 - ACS Publications
Solar energy provides one major pathway to addressing global energy issues. Inspired by
photosynthesis, nonbiological solar energy systems are designed for both absorbing light …

Cryo-EM Structure of the Mnx Protein Complex Reveals a Tunnel Framework for the Mechanism of Manganese Biomineralization

IV Novikova, AV Soldatova, TH Moser… - Journal of the …, 2024 - ACS Publications
The global manganese cycle relies on microbes to oxidize soluble Mn (II) to insoluble Mn
(IV) oxides. Some microbes require peroxide or superoxide as oxidants, but others can use …

Molecular response to the influences of Cu (II) and Fe (III) on forming biogenic manganese oxides by Pseudomonas putida MnB1

Q Li, M Shi, Q Liao, K Li, X Huang, Z Sun… - Journal of Hazardous …, 2024 - Elsevier
The biogeochemical cycle of biogenic manganese oxides (BioMnOx) is closely associated
with the environmental behavior and fate of various pollutants. It is significantly interfered by …

MopA, the Mn Oxidizing Protein From Erythrobacter sp. SD-21, Requires Heme and NAD+ for Mn(II) Oxidation

M Medina, A Rizo, D Dinh, B Chau, M Omidvar… - Frontiers in …, 2018 - frontiersin.org
Bacterial manganese (Mn) oxidation is catalyzed by a diverse group of microbes and can
affect the fate of other elements in the environment. Yet, we understand little about the …

Temporal Dynamics of Oxidation Capacity in Biogenic Manganese Oxides: Role of Superoxide Anion Intermediation

Y Xu, T Wu, G Zhang, Y Niu - ACS ES&T Water, 2024 - ACS Publications
Biogenic manganese (Mn) oxides, formed via microorganism activity, contribute markedly to
biogeochemical cycles. The active contribution to the decomposition and conversion of …

Substrate specificity and copper loading of the manganese-oxidizing multicopper oxidase Mnx from Bacillus sp. PL-12

CN Butterfield, BM Tebo - Metallomics, 2017 - academic.oup.com
Manganese (ii) oxidation in the environment is thought to be driven by bacteria because
enzymatic catalysis is many orders of magnitude faster than the abiotic processes. The …