Results 111 to 120 of about 14,319 (272)

Roles of G proteins and their GTPase-activating proteins in platelets

Bioscience Reports
AbstractPlatelets are small anucleate blood cells supporting vascular function. They circulate in a quiescent state monitoring the vasculature for injuries. Platelets adhere to injury sites and can be rapidly activated to secrete granules and to form platelet/platelet aggregates.
Lorna O'Donoghue, Albert Smolenski
openaire   +2 more sources

Phospholipases as GTPase activity accelerating proteins (GAPs) in plants [PDF]

Plant Signaling & Behavior, 2016
GTPase activity accelerating proteins (GAPs) are key regulators of the G-protein signaling cycle. By facilitating effective hydrolysis of the GTP bound on Gα proteins, GAPs control the timing and amplitude of the signaling cycle and ascertain the availability of the inactive heterotrimer for the next round of activation.
openaire   +3 more sources

RAB3B Dictates mTORC1/S6 Signaling in Chordoma and Predicts Response to mTORC1‐Targeted Therapy

Advanced Science, EarlyView.
RAB3B is unveiled as a prominent oncogenic regulator in chordoma, which can block the DUSP12‐mediated dephosphorylation of p‐S6 (S235/236). The combination of RAB3B and p‐S6 indicates a good prognostic value and predicts mTORC1 inhibitors response for chordoma patients.
Jianxuan Gao, Jiali Jin, Runzhi Huang, Siqiao Wang, Sihui Song, Yu Zhang, Yongai Li, Jun Lin, Zhengyan Chang, Zongqiang Huang, Wei Sun, Huabin Yin, Dianwen Song, Jianru Xiao, Ping Wang, Tong Meng   +15 more
wiley   +1 more source

The RhoGAP activity of CYK-4/MgcRacGAP functions non-canonically by promoting RhoA activation during cytokinesis

eLife, 2015
Cytokinesis requires activation of the GTPase RhoA. ECT-2, the exchange factor responsible for RhoA activation, is regulated to ensure spatiotemporal control of contractile ring assembly.
Donglei Zhang, Michael Glotzer
doaj   +1 more source

Photo‐Biomodulation of the Hippocampus Using Near‐Infrared Laser to Enhance Cognitive Function in Mice

Advanced Science, EarlyView.
Here a transcranial photo‐biomodulation approach is developed using near‐infrared (NIR) laser on hippocampus of mice, revealing significant improvements in learning and memory ability of mice under normal and disease conditions. The improvement results from the high‐density cell‐induced NIR local energy deposition, neuronal activation, and axonogenesis
Wei‐Tong Pan, Han‐Wen Gu, Yan‐Bo Zhou, Sophie Ma, Daqing Ma, Pan‐Miao Liu, Jian‐Jun Yang   +6 more
wiley   +1 more source

Structure and evolution of neuronal wiring receptors and ligands

Developmental Dynamics, Volume 252, Issue 1, Page 27-60, January 2023., 2023
Abstract One of the fundamental properties of a neuronal circuit is the map of its connections. The cellular and developmental processes that allow for the growth of axons and dendrites, selection of synaptic targets, and formation of functional synapses use neuronal surface receptors and their interactions with other surface receptors, secreted ...
Elena Cortés, Joseph S. Pak, Engin Özkan   +2 more
wiley   +1 more source

Differential stimulation of the GTPase activity of G-proteins by polylysine

Biochemical Pharmacology, 1992
Polylysine, polyornithine and, to a lesser extent, polyarginine were found to stimulate the GTPase activity of the purified recombinant alpha subunit of the human G(i)-3 transducing protein alpha i-3. Optimal stimulation of 4- to 5-fold was obtained with polylysine concentrations between 1 and 20 microM, higher concentrations being inhibitory ...
Antonelli, Marcelo, Olate, Juan, Graf, Rolf, Allende, Catherine C., Allende, Jorge E.   +4 more
openaire   +4 more sources

PRMT1‐Mediated SWI/SNF Complex Recruitment via SMARCC1 Drives IGF2BP2 Transcription to Enhance Carboplatin Resistance in Head and Neck Squamous Cell Carcinoma

Advanced Science, EarlyView.
PRMT1 drives carboplatin resistance and tumor progression in head and neck squamous cell carcinoma (HNSCC) through a novel, methyltransferase‐independent mechanism. It recruits the SWI/SNF complex to activate IGF2BP2, promoting tumor growth and carboplatin resistance. PBX2 upregulates PRMT1, reinforcing this pathway. This study uncovers a non‐catalytic
Shixian Liu, Wentao Zhang, Weiwei Liu, Zhao Ding, Ruijing Zhang, Yuefeng Han, Zihao Niu, Mengdie Zhang, Hui Li, Dapeng Li, Zixi Wang, Jie Peng, Yu Wu, Yanxun Han, Zihui Xie, Jing Wu, Liang Qin, Zhongdong Hu, Xu Chen, Yunlong Hu, Yehai Liu, Shiyin Ma, Xiaojun Zha   +22 more
wiley   +1 more source

The E3 Ubiquitin Ligase ARIH1 Facilitates Colorectal Cancer Progression by Promoting Oxidative Phosphorylation via the Mitochondrial Translocation of K63‐Linked Ubiquitinated PHB1

Advanced Science, EarlyView.
The RBR E3 ubiquitin ligase ARIH1, which is upregulated in colorectal cancer cells, promotes cell growth and metastasis and correlates with an unfavorable CRC prognosis. Mechanistically, ARIH1 catalyzes K63‐linked ubiquitination of PHB1, enhancing the interaction between PHB1 and Akt.
Ying Tong, Zhenling Wang, Yong Wang, Yang Chen, Hongqiang Zhang, Yunfei Lu, Lei Xu, Hengyang Shen, Changzhi Huang, Min Zhao, Wenjie Li, Shuai Wang, Yu Shao, Zan Fu   +13 more
wiley   +1 more source

The FGF13‐Caveolin‐1 Axis: A Key Player in the Pathogenesis of Doxorubicin‐ and D‐Galactose‐Induced Premature Cardiac Aging

Advanced Science, EarlyView.
The FGF13 level is significantly downregulated in premature aging murine hearts subject to D‐galactose and Doxorubicin. FGF13 overexpression and deficiency exacerbated and alleviated Doxorubicin/D‐galactose‐induced myocardial aging characteristics and functional impairment, respectively.
Enzhao Shen, Yuecheng Wu, Weijian Ye, Sihang Li, Junjie Zhu, Meifan Jiang, Zhicheng Hu, Gaoyong Cao, Xiaojing Yi, Fan Li, Zhouhao Tang, Xiaokun Li, Kwang Youl Lee, Litai Jin, Xu Wang, Weitao Cong   +15 more
wiley   +1 more source