Results 101 to 110 of about 137,270 (354)

Coordinate regulation of G protein signaling via dynamic interactions of receptor and GAP.

PLoS Computational Biology, 2008
Signal output from receptor-G-protein-effector modules is a dynamic function of the nucleotide exchange activity of the receptor, the GTPase-accelerating activity of GTPase-activating proteins (GAPs), and their interactions. GAPs may inhibit steady-state
Marc Turcotte, Wei Tang, Elliott M Ross
doaj   +1 more source

Extracellular Vesicle‐Delivered tRF‐His‐GTG‐1 Reprograms Neutrophil Lipophagy and Triggers Inflammation in COVID‐19

Advanced Science, EarlyView.
This study identifies platelet‐derived extracellular vesicles as key immunometabolic regulators in COVID‐19. The delivery of tRF‐His‐GTG‐1 to neutrophils activates TLR8mTOR signaling, disrupts lipophagy, and amplifies NET‐mediated inflammation. Importantly, targeting this axis restores neutrophil homeostasis, offering a potential therapeutic strategy ...
Tsai‐Ling Liao, Po‐Yu Liu, Yi‐Ming Chen, Kuo‐Tung Tang, Hung‐Jen Liu, Der‐Yuan Chen   +5 more
wiley   +1 more source

The interaction of Ras with GTPase‐activating proteins

FEBS Letters, 1997
Ras plays a major role as a molecular switch in many signal transduction pathways which lead to cell growth and differentiation. The GTPase reaction of Ras is of central importance in the function of the switch since it terminates Ras‐effector interactions.
Wittinghofer, A., Scheffzek, K., Ahmadian, M.   +2 more
openaire   +3 more sources

Discovery of a Novel and Potent Kir4.1 Inhibitor as a Safe and Rapid‐Onset Antidepressant Agent in Mice

Advanced Science, EarlyView.
The preferred derivative JX3212 demonstrates strong inhibitory activity against Kir4.1 with favorable druggability and shows significant antidepressant efficacy in vivo. Abstract Major depressive disorder is a serious psychiatric disorder for which novel and fast‐acting antidepressants are required.
Sisi Wang, Xiaoyu Zhou, Mengdan Li, Chao Zhang, Haiyan Xu, Jingyi He, Li Zhan, Yueling Gu, Hao Gu, Tianyu Tu, Hanfang Liu, Taotao Lu, Yueming Zheng, Jian Li, Zhaobing Gao, Yixiang Xu   +15 more
wiley   +1 more source

Kinetic and Structural Analysis of the Mg2+ -binding Site of the Guanine Nucleotide-binding Protein p21 H-ras. [PDF]

, 1993
The coordination and binding of the Mg2+ ion in the nucleotide−binding site of p21 have been investigated using site−directed mutagenesis, kinetic methods, and phosphorous NMR.
Borasio, Gian Domenico, Goody, R. S., John, J., Rensland, H., Schlichting, I., Vetter, I., Wittinghofer, A.   +6 more
core  

Sterol transporters at membrane contact sites regulate TORC1 and TORC2 signaling. [PDF]

, 2017
Membrane contact sites (MCSs) function to facilitate the formation of membrane domains composed of specialized lipids, proteins, and nucleic acids. In cells, membrane domains regulate membrane dynamics and biochemical and signaling pathways.
Murley, Andrew, Niles, Bradley J, Nunnari, Jodi, Powers, Ted, Prinz, William A, Toulmay, Alexandre, Yamada, Justin   +6 more
core   +1 more source

Decoding Human Placental Cellular and Molecular Responses to Obesity and Fetal Growth

Advanced Science, EarlyView.
Women with obesity often deliver large‐for‐gestational‐age (LGA) infants. Single‐nucleus RNA sequencing of term placenta reveals that hypoxia and TNF‐α signaling in syncytiotrophoblasts are featured in maternal obesity, but inflammatory signatures in Hofbauer cells and response to lipid or carbohydrate metabolism in fibroblasts are specific to LGA.
Hong Jiang, Emilie Derisoud, Denise Parreira, Nayere Taebnia, Paulo R. Jannig, Reza Zandi Shafagh, Allan Zhao, Congru Li, Macarena Ortiz, Manuel Alejandro Maliqueo, Elisabet Stener‐Victorin, Volker M. Lauschke, Qiaolin Deng   +12 more
wiley   +1 more source

Tumor Suppression of Ras GTPase-Activating Protein RASA5 through Antagonizing Ras Signaling Perturbation in Carcinomas

iScience, 2019
Summary: Aberrant RAS signaling activation is common in cancers with even few Ras mutations, indicating alternative dysregulation other than genetic mutations.
Lili Li, Yichao Fan, Xin Huang, Jie Luo, Lan Zhong, Xing-sheng Shu, Li Lu, Tingxiu Xiang, Anthony T.C. Chan, Winnie Yeo, Ceshi Chen, Wai Yee Chan, Richard L. Huganir, Qian Tao   +13 more
doaj   +1 more source

GSK3-mediated raptor phosphorylation supports amino acid-dependent Q2 mTORC1-directed signalling [PDF]

, 2015
The mammalian or mechanistic target of rapamycin (mTOR) complex 1 (mTORC1) is a ubiquitously expressed multimeric protein kinase complex that integrates nutrient and growth factor signals for the co-ordinated regulation of cellular metabolism and cell ...
Alan Prescott, Averous, Avruch, Azoulay-Alfaguter, Bain, Bar-Peled, Bar-Peled, Bradford, Carriere, Carriere, Clare Stretton, Coghlan, Cross, Demetriades, Dibble, Doble, Fonseca, Foster, Frey, Ganley, Garcia-Martinez, Gwinn, Gwinn, Hajduch, Hara, Harinder S. Hundal, Hosokawa, Ian G. Ganley, Inoki, Inoki, Inoki, Jewell, Jung, Kelleher, Kim, Kim, Kwak, Lipina, MacAulay, Marchand, Martina, Meijer, Menon, Michael J. Munson, Oshiro, Oshiro, Parr, Peter M. Taylor, Pfaffl, Ramirez-Valle, Rebsamen, Sancak, Shin, Smith, Stretton, Sutherland, Thorsten M. Hoffmann, Wang, Wang, Yoon, Zoncu   +60 more
core   +3 more sources

Human Atlas of Tooth Decay Progression: Identification of Cellular Mechanisms Driving the Switch from Dental Pulp Repair Toward Irreversible Pulpitis

Advanced Science, EarlyView.
Tooth decay progression transforms the dental pulp response from repair to fibrosis. At early stages, stromal cells reprogram to repair the extra cellular matrix (ECM), blood vessels, and nerves, remodel and grow, keeping repair possible. In advanced decay, hypoxia, and vessel regression, in complement with an immune switch, fuel nerve degeneration and
Hoang Thai Ha, Sofya Kosmynina, Amandine Verocq, Keremsah Ozen, Ines Tekia, Hugo Bussy, Marie Ramirez, Dima Sabbah, Chloe Goemans, Valerie Vandenbempt, Esteban N. Gurzov, Sumeet Pal Singh, Nicolas Baeyens   +12 more
wiley   +1 more source