Tryptophan as a Probe of Photosystem I Electron Transfer

Photosystem I (PSI) is one of the two membrane-associated reaction centers involved in oxygenic photosynthesis. In photosynthesis, solar energy is converted to chemical energy in the form of a transmembrane charge separation. PSI oxidizes cytochrome c6 or plastocyanin and reduces ferredoxin. In cyanobacterial PSI, there are 10 tryptophan residues with indole side chains located less than 10 Å

Abstract 14797: Fyn is a Sensor and Regulator of Nox4

Fyn expression was significantly decreased in failing human hearts compared to in control patient hearts. Conclusions: Fyn is activated by oxidative stress and serves as a negative feedback regulator of Nox4 in CMs. Fyn negatively regulates cell death in the failing heart as a sensor and regulator of Nox4-derived ROS.

Steven P Stratton — University of Arizona

Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin carcinogenesis

Basic Principles and Emerging Concepts in the Redox

Sep 01, 2011· The redox sensor, however, is not an inhibitory protein such as Keap1 , but an enzyme: the proline hydroxylase that hydroxylates the transcription factor HIF-1α and targets it for ubiquitination . Similarly, the transcription factor β-catenin in the Wnt pathway is steadily ubiquitinated and degraded under resting conditions.

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Today’s RESEARCH,

identified. Using an experimental system of solar simulated light (SSL) to mimic solar UV, we demonstrated that Fyn is a primary redox sensor for SSL-induced signal transduction. Reactive oxygen species (ROS) generated by SSL exposure directly oxidize Cys488 on Fyn, resulting in …

Fyn knockdown inhibits migration and invasion in

Kim JE, Roh E, Lee MH, Yu DH, Kim DJ, Lim TG, Jung SK, Peng C, Cho YY, Dickinson S, et al: Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin carcinogenesis. Oncogene. 35:4091–4101. 2016. View Article: Google Scholar: PubMed/NCBI. 14

Fyn - Saito - 2010 - Cancer - Wiley Online Library

Abstract. Fyn is 59‐kDa member of the Src family of kinases that is historically associated with T‐cell and neuronal signaling in development and normal cellular physiology. Whereas Src has been heavily studied in cancer, less attention has been traditionally awarded to the other Src kinases such as Fyn.

IJMS | Free Full-Text | Inhibitory Effect of Opuntia

Opuntia humifusa is a type of cactus whose fruits have been used in folk medicine for the treatment of several diseases. In the present study, we aimed to determine whether O. humifusa fruit water extract (OHE) has inhibitory effects against solar ultraviolet (sUV)-induced matrix metalloproteinase-1 (MMP-1) expression. In ex vivo human skin, we found that OHE suppressed sUV radiation-induced

Silibinin is a Potent Sensitizer of Ultraviolet A

Introduction. Solar ultraviolet (UV) radiation is the major environmental etiologic factor in the development of non-melanoma skin cancer, which is the most frequently diagnosed neoplastic condition in humans (1, 2).A radiation (UVA) has been considered less carcinogenic and mutagenic because of its limited direct DNA damage potential as the constituent nucleotide bases do not absorb

Fyn regeneration - PubMed Central (PMC)

Oct 15, 2012· Anna Huttenlocher and colleagues at the University of Wisconsin-Madison previously found that wounding zebrafish larvae induced the generation of reactive oxygen species (ROS), especially hydrogen peroxide, which activated the Src family kinase (SFK) Lyn in neutrophils ().). “Lyn functions as a redox sensor to detect hydrogen peroxide and direct neutrophils to the wound site,” …

Whole-Exome Sequencing Validates a Preclinical Mouse …

Very recently, a similar model (with a slightly different irradiation schedule) was employed by Kim and colleagues who found that Fyn, a member of the Src family of protein tyrosine kinases, acts as a redox sensor in a signal transduction cascade induced by exposure to solar-simulated UVR. Using whole-exome sequencing of genomic DNA isolated from microdissected tumor tissue, we now show that the …

Suppression of the solar ultraviolet-induced skin

Apr 10, 2020· Kim JE, Roh E, Lee MH, Yu DH, Kim DJ, Lim TG, et al. Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin carcinogenesis. Oncogene. 2016;35:4091–101.

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The role of UV-induced DNA damage response and zinc

SOLAR UV LIGHT IRRADIATION AND ITS CELL BIOLOGICAL CONSEQUENCES Solar UV exposure is one of the most important environmental factors affecting skin physiology 1. UV radiation, expanding the 200 to 400 nm wavelengths of the electromagnetic spectrum, is a high-energy component of solar radiation (Figure 3.). UVR is divided into

Fyn Is a Redox Sensor Involved in Solar Ultraviolet Light

Solar ultraviolet (UV) light is a major etiological factor in skin carcinogenesis, with solar UV-stimulated signal transduction inducing pathological changes and skin damage. The primary sensor of solar UV-induced cellular signaling has not been identified. We use an experimental system of solar simulated light (SSL) to mimic solar UV and we demonstrate that Fyn is a primary redox sensor involved in SSL …

Janine G Einspahr — University of Arizona

Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin carcinogenesis Kim, J. E., Roh, E., Light Signal Transduction. Ultraviolet Rays. …

Ultraviolet A light induces DNA damage and estrogen-DNA

Jan 07, 2020· The cornea is in the direct path of ultraviolet (UV) light, and the central cornea receives a substantially greater penetration of UV light compared to the peripheral regions (5, 6). Specifically, the ultraviolet A (UVA) light (320 to 400 nm) represents 95% of incident solar radiation and is absorbed by all layers of the cornea (epithelium

Fyn is a redox sensor involved in solar ultraviolet light

We use an experimental system of solar simulated light (SSL) to mimic solar UV and we demonstrate that Fyn is a primary redox sensor involved in SSL-induced signal transduction. Reactive oxygen species (ROS) generated by SSL exposure directly oxidize Cys488 of Fyn, resulting in …

Mee Hyun Lee's research works | Zhengzhou University

Reference: Fyn specifically Regulates the activity of red cell glucose-6-phosphate-dehydrogenase Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin

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Evidence for antioxidant nutrientsâ induced …

similarity suggests that the ultraviolet induction of DNA photoproducts and/or their repair may be causally involved in these other consequences of UV exposure. In addition to direct damage to DNA and proteins, perturbations of the cellular redox-equilibrium also occur as a

Profibrotic epithelial TGF-β1 signaling involves NOX4

Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin carcinogenesis. Oncogene 35: 4091–4101, 2016 . doi: 10.1038/onc.2015.471 . Crossref | PubMed | …

Steven STRATTON | PhD | The University of Arizona, Arizona

Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin carcinogenesis

Redox regulation of tyrosine kinase signalling: more than

Oct 10, 2019· For example, Fyn and Yes represent ubiquitously expressed SFK members that also contain a CXXXXXXXMXXCW motif , and activation of Fyn in keratinocytes in response to solar UV-light exposure was found to involve oxidation of C488 (homologous to Src C487), which was thought to represent a potential redox sensing mechanism to induce protective cellular apoptosis and prevent …

Fyn regeneration | Journal of Cell Biology | Rockefeller

Anna Huttenlocher and colleagues at the University of Wisconsin-Madison previously found that wounding zebrafish larvae induced the generation of reactive oxygen species (ROS), especially hydrogen peroxide, which activated the Src family kinase (SFK) Lyn in neutrophils ().). “Lyn functions as a redox sensor to detect hydrogen peroxide and direct neutrophils to the wound site,” explains

Profibrotic epithelial TGF-β1 signaling involves NOX4

Fyn is a redox sensor involved in solar ultraviolet light-induced signal transduction in skin carcinogenesis. Oncogene 35: 4091–4101, 2016. doi: 10.1038/onc.2015.471. Crossref | PubMed | ISI | …

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Light acts as a stressor and influences abiotic and biotic

Blue/UV-A light is perceived by cryptochromes (Figure 1) which contain a flavin adenine dinucleotide (FAD) as chromophore (reviewed in Wang & Lin, 2020). The cryptochromes are activated through inter-conversion of flavin redox states (Bouly et al., 2007) caused by photoex-citation (Liu, Liu, Zhao, Pepper, & Lin, 2011) resulting in the production

Cosmetics | Free Full-Text | Skin Redox Balance

Skin redox balance is a gentle equilibrium between reactive oxygen species (ROS) and their detoxification. Skin is a major target for oxidative stresses and damage [1,2] since it is continually exposed to ROS from the environment, as well as from endogenous sources.ROS are involved in basic cellular processes such as signal transduction, gene expression, and apoptosis [3,4,5,6,7] and …

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Whole exome sequencing validates a preclinical mouse …

Dec 06, 2016· schedule) was employed by Kim et al. (20) who found that Fyn, a member of the Src family of protein tyrosine kinases, acts as a redox sensor in a signal transduction cascade induced by exposure to solar-simulated UVR. Using whole exome sequencing of genomic DNA isolated from microdissected tumor tissue, we now

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Wavelengths of light and photosynthetic pigments (article

Properties of light. How chlorophylls and other pigments absorb light. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

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[PDF]

Today’s RESEARCH,

The primary sensor of solar UV-induced cellular signaling has not been identified. Using an experimental system of solar simulated light (SSL) to mimic solar UV, we demonstrated that Fyn is a primary redox sensor for SSL-induced signal transduction. Reactive oxygen species (ROS) generated by

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