Results 111 to 120 of about 177,246 (350)

An Effector of Hemoglobin Structure: The Guanosine 3', 5'-Triphosphate

Croatica Chemica Acta, 2012
The effect of guanosine 3', 5'-triphosphate (GTP) on the hemoglobin structure was studied by UV-visible, fluorescence and circular dichroism (CD) spectroscopies, and cyclic voltammetry. UV-visible absorption spectra showed an increase in absorbance in the regions of 420 nm and 280 nm.
Rezaei-Zarchi, Saeed, Imani, Saber, Soufian, Safieh, Panahi, Yunes, Saboury, Ali Akbar, Arefi, Mohammad Reza   +5 more
openaire   +3 more sources

Natural Products Targeting the EGFR/HER2 Axis in Tumorigenesis: Interpretation of Molecular Mechanisms and Recent Insights Into Synergistic Strategies for Cancer Therapy

Food Frontiers, EarlyView.
Schematic overview illustrating the anticancer mechanisms of selected natural products (resveratrol, quercetin, berberine) targeting EGFR and HER2 signaling pathways in tumor cells. These compounds inhibit receptor activation and downstream oncogenic cascades, including PI3K/Akt/mTOR, MAPK/ERK, and STAT3 pathways.
Iman Ramli, Anna Maria Posadino, Roberta Giordo, Antonio Barberis, Ylenia Spissu, Redouane Lemoui, William N. Setzer, Javad Sharifi‐Rad, Gianfranco Pintus   +8 more
wiley   +1 more source

What are guanosine triphosphate-binding proteins doing in mitochondria?

Biochimica et Biophysica Acta (BBA) - Molecular Cell Research, 1998
The discovery of GTP-binding proteins in mitochondria is a recent event. These regulatory proteins may be participating in membrane fusion and thereby playing important roles in the physiology of the mitochondrion. So far, it has been proposed that GTP-binding protein mediated membrane fusion may be involved in protein import, steroid hormone ...
openaire   +3 more sources

Effect of GTP and Ca2+ on inositol 1,4,5-trisphosphate induced Ca2+ release from permeabilized rat exocrine pancreatic acinar cells [PDF]

, 1991
The effects of Ca2+ and GTP on the release of Ca2+ from the inositol 1,4,5-trisphosphate (IP3) sensitive Ca2+ compartment were investigated with digitonin permeabilized rat pancreatic acinar cells.
Ammann, Amsterdam, Bayerdörffer, Berridge, Brass, Chueh, Comerford, Danoff, Dawson, Dawson, Föhr, Ghosh, Gill, Henne, Hurley, Imamura, Joseph, Kemmer, Kimura, Kleinecke, Prentki, Rossier, Simon, Stoehr, Streb, Streb, Suppattapone, Thomas, Ueda, Willems, Worley   +30 more
core   +1 more source

Hypoxanthine-guanine phosphoribosyltransferase and inosine 5’-monophosphate dehydrogenase activities in three mammalian species: aquatic (Mirounga angustirostris), semiaquatic (Lontra longicaudis annectens) and terrestrial (Sus scrofa)

Frontiers in Physiology, 2015
Aquatic and semiaquatic mammals have the capacity of breath hold (apnea) diving. Northern elephant seals (Mirounga angustirostris) have the ability to perform deep and long duration dives; during a routine dive, adults can hold their breath for 25 min ...
Myrna eBarjau Perez-Milicua, Tania eZenteno-Savin, Daniel E. Crocker, Juan Pablo Gallo   +3 more
doaj   +1 more source

The mechanisms in glucose metabolism of aging hippocampus

Ibrain, EarlyView.
Cognitive decline in elders stems from the irreversible loss and functional decline of neurons, with the hippocampus being particularly susceptible to age‐related neuronal deterioration. Glucose acts as the primary fuel for the brain, and a constant provision of glucose to the hippocampus is essential for memory and cognitive functions.
Rui He, Fuxing Zhao, Zhiyu Yang, Tingting Wang, Yaohui Zhang, Jinglan Quan, Gaohong Zhu   +6 more
wiley   +1 more source

Nucleotide-, chemotactic peptide- and phorbol ester-induced exocytosis in HL-60 leukemic cells [PDF]

, 1990
Undifferentiated and differentiated HL-60 leukemic cells possess nucleotide receptors which functionally couple to phospholipase C via pertussis toxin-sensitive guanine nucleotide-binding proteins (G-proteins).
Seifert, Roland, Wenzel-Seifert, Katharina   +1 more
core   +1 more source

Evolution of the bacterial nucleosidase PpnN and its relation to the stringent response

Microbial Cell, 2019
In our recent publication (Zhang et al., 2019), we demonstrate an interesting mode of regulation of purine metabolism unique to Proteobacteria. In this microreview, we would like to reflect on the ideas put forward, with special focus on protein domain ...
René Lysdal Bærentsen, Ditlev Egeskov Brodersen, Yong Everett Zhang   +2 more
doaj   +1 more source

In Vitro and Clinical Evaluation of Potential Interactions of Bemnifosbuvir with Drug Transporters

The Journal of Clinical Pharmacology, EarlyView.
Abstract Bemnifosbuvir is a novel oral guanosine nucleotide prodrug candidate for the treatment of chronic hepatitis C virus infection. Potential drug–drug interactions (DDIs) of bemnifosbuvir as a substrate or perpetrator with regard to ATP‐binding cassette (ABC) and solute carrier (SLC) transporters were evaluated in vitro and in clinical studies ...
Xiao‐Jian Zhou, Alex Vo, Gaetano Morelli, Maureen Montrond, Shannan Lynch, Keith Pietropaolo, Bruce Belanger, Arantxa Horga, Nancy Agrawal, Janet Hammond   +9 more
wiley   +1 more source

Development of Dipicolylamine-Modified Cyclodextrins for the Design of Selective Guest-Responsive Receptors for ATP

Molecules, 2018
The construction of supramolecular recognition systems based on specific host–guest interactions has been studied in order to design selective chemical sensors. In this study, guest-responsive receptors for ATP have been designed with cyclodextrins (CyDs)
Tatsuru Yamada, Shoji Fujiwara, Kyohhei Fujita, Yuji Tsuchido, Takeshi Hashimoto, Takashi Hayashita   +5 more
doaj   +1 more source