Results 71 to 80 of about 270,701 (335)

Inactivation of Cytochrome-c with Glucose Oxidase

Journal of Enzyme Inhibition and Medicinal Chemistry, 2004
A novel reaction of cytochrome-c from the horse heart with the enzyme glucose oxidase from Aspergillus niger (EC 1.1.3.4), in acidic media is described. Glucose oxidase is able to induce a rapid, profound and irreversible physico-chemical change in cytochrome-c, under anaerobic conditions and in the presence of glucose.
Julijan Kandrač, Draginja Peričin, Vladimir Leskovac, Svetlana Trivić   +3 more
openaire   +4 more sources

Intracytoplasmic Copper Homeostasis Controls Cytochrome c Oxidase Production

mBio, 2014
Copper is an essential micronutrient used as a metal cofactor by a variety of enzymes, including cytochrome c oxidase (Cox). In all organisms from bacteria to humans, cellular availability and insertion of copper into target proteins are tightly ...
S. Ekici, S. Turkarslan, Grzegorz Pawlik, A. Dancis, N. Baliga, H. Koch, F. Daldal   +6 more
semanticscholar   +1 more source

Automated Transcranial Photobiomodulation in Healthy Rats: Effects on Working Memory and Brain Markers

Advanced Therapeutics, EarlyView.
Transcranial photobiomodulation (PBM) enhances spatial working memory in healthy rats under both continuous and alternating stimulation protocols. At the neural level, PBM modulates cytochrome c oxidase activity, increases prefrontal and hippocampal synaptic markers, and induces region‐specific c‐Fos expression. These effects suggest improved cognitive
Candela Zorzo, Lucía Rodríguez‐Fernández, Emily Gabriela Castillo‐Escalona, Juan A. Martínez, Laura Mañas, Natalia Arias, Jorge L. Arias   +6 more
wiley   +1 more source

Phenotypic assessment of Cox10 variants and their implications for Leigh Syndrome

BMC Research Notes
Objectives Cox10 is an enzyme required for the activity of cytochrome c oxidase. Humans who lack at least one functional copy of Cox10 have a form of Leigh Syndrome, a genetic disease that is usually fatal in infancy. As more human genomes are sequenced,
Thomas-Shadi Voges, Eun Bi Lim, Abigail MacKenzie, Kyle Mudler, Rebecca DeSouza, Nmesoma E. Onyejekwe, Stephen D. Johnston   +6 more
doaj   +1 more source

Prognostic relevance of cytochrome C oxidase in primary glioblastoma multiforme.

PLoS ONE, 2013
Patients with primary glioblastoma multiforme (GBM) have one of the lowest overall survival rates among cancer patients, and reliable biomarkers are necessary to predict patient outcome.
Corinne E Griguer, Alan B Cantor, Hassan M Fathallah-Shaykh, G Yancey Gillespie, Amber S Gordon, James M Markert, Ivan Radovanovic, Virginie Clement-Schatlo, Chevis N Shannon, Claudia R Oliva   +9 more
doaj   +1 more source

Radical formation in cytochrome c oxidase

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2011
The formation of radicals in bovine cytochrome c oxidase (bCcO), during the O(2) redox chemistry and proton translocation, is an unresolved controversial issue. To determine if radicals are formed in the catalytic reaction of bCcO under single turnover conditions, the reaction of O(2) with the enzyme, reduced by either ascorbate or dithionite, was ...
Kyoko Shinzawa-Itoh, Gary J. Gerfen, Syun Ru Yeh, Shinya Yoshikawa, Denis L. Rousseau, Tsuyoshi Egawa, Michelle Yu   +6 more
openaire   +3 more sources

Presbycusis: Pathology, Signal Pathways, and Therapeutic Strategy

Advanced Science, EarlyView.
In ARHL, the stria vascularis, acting as a cochlear battery, gradually loses its ability to maintain the endocochlear potential, leading to impaired hair cell function and progressive hearing loss. Single‐cell sequencing reveals age‐related cellular changes in the cochlea, providing insights into the underlying mechanisms of aging and potential ...
Xiaoxu Zhao, Tian Shen, Shengda Cao, Ziyi Liu, Wendu Pang, Meixuan Li, Jingjing Liu, Wen Li, Yunhao Wu, Chengcheng Liu, Ming Xia, Xiaolong Fu, Cheng Cheng   +12 more
wiley   +1 more source

Gentle Label‐Free Nonlinear Optical Imaging Relaxes Linear‐Absorption‐Mediated Triplet

Advanced Science, EarlyView.
The phototoxicity in nonlinear optical microscopy arises mainly from linear absorption of intrinsic biomolecules rather than nonlinear absorption. This mechanism is supported by a reproducible phototoxicity assay based on widely available chicken breast.
Geng Wang, Lianhuang Li, Janet E. Sorrells, Jianxin Chen, Haohua Tu   +4 more
wiley   +1 more source

The Iron–Sulfur Cluster of Bacterioferritin‐Associated Ferredoxin (Bfd): a “Biological Fuse” that Prevents Oxidative Damage to Cells?

Angewandte Chemie, EarlyView.
When cellular iron is low, bacterioferritin (Bfr) releases its stored iron through a reductive process dependent on the [2Fe–2S] ferredoxin Bfd. Why accessing stored iron should depend on an iron‐requiring protein when iron is scarce is unclear. Here, we show that the Bfd [2Fe–2S] cluster is sensitive to oxidative stress, suggesting that it may act as ...
Justin M. Bradley, Aiden M. Carter, Zinnia Bugg, Simon C. Andrews, Nick E. Le Brun   +4 more
wiley   +2 more sources

Accounting for ALA Natural Mutations Enhances the Efficiency of Graphene Oxide Nanopriming in Bar‐Modified Arabidopsis

Advanced Science, EarlyView.
Nanopriming enhances plant resilience to environmental challenges; however, its effectiveness across diverse genetic backgrounds, including genetic modifications and natural variations, remains uncertain. These findings demonstrate that nanopriming improves efficacy when natural genetic variations are considered, particularly in genetically modified ...
Yining Wu, Rui Sun, Yueting Cui, Jun Qiao, Chengdong Zhang   +4 more
wiley   +1 more source