Results 131 to 140 of about 2,237,466 (287)

Entrapment of hemocyanin conformers as a tool for the definition of the structural model of cooperativity [PDF]

, 2013
Allostery has been established as a fundamental mechanism of regulation in most biological processes (Changeux, 2012). The most studied allosteric protein is hemoglobin, that has long been considered a paradigm for the investigation of allostery and ...
Minute, Fabrizio
core  

A Synthetic Platform for Antibody Junctional Diversification Beyond Natural Constraints

Advanced Science, EarlyView.
ARESEC is a synthetic platform that reconstructs functional V(D)J recombination in HEK293T cells. By introducing RSS elements and co‐expressing RAG1/2 and TdT across all three antibody CDRs, it enables programmable junctional diversification and direct generation of high‐affinity variants targeting PD‐1/PD‐L1, overcoming the evolutionary constraints of
Wang Liu, Jun Yang, Yuhang Zhang, Xiaoli Xue   +3 more
wiley   +1 more source

New Paradigm for Allosteric Regulation of Escherichia coli Aspartate Transcarbamoylase

, 2016
For nearly 60 years, the ATP activation and the CTP inhibition of Escherichia coli aspartate trans­carbamoylase (ATCase) has been the textbook example of allosteric regulation.
Alexis W. Peterson (512501), Jennifer K. Truong (1886563), Gregory M. Cockrell (1886569), Yunan Zheng (1886560), Wenyue Guo (1294725), Evan R. Kantrowitz (1886566)   +5 more
core   +1 more source

Targeting the PHB2–ACSL3 Lipid‐Remodeling Axis Overcomes Cisplatin Resistance by Restoring Ferroptosis in Gastric Cancer

Advanced Science, EarlyView.
ABSTRACT Platinum‐based chemotherapy resistance remains a major obstacle in gastric cancer (GC) treatment. Through integrated transcriptomic profiling of cisplatin‐resistant xenografts and pharmacogenomic interrogation of the NCI‐60 dataset, we identified Prohibitin‐2 (PHB2) as a previously unrecognized determinant of chemoresistance.
Liang Xu, Wanying Xiang, Xinyue Wang, Yue Pan, Jing Gao, Jiezhen Yang, Yufei Wang, Zhipu Zhu, Man Tong, Lei Jin, Yan Ye   +10 more
wiley   +1 more source

Corynoxine Inhibits Tumor Growth via Targeting NQO1 and Modulating the PTPA–NQO1/PP2A Switch to Activate PP2A

Advanced Science, EarlyView.
Corynoxine exerts potent broad‐spectrum anticancer activity by directly targeting NQO1. This interaction dissociates the oncogenic NQO1‐PTPA complex, releasing PTPA to robustly activate the tumor suppressor PP2A. Consequently, downstream Raf/MEK/ERK and PI3K/AKT signaling pathways are suppressed, downregulating c‐Myc and driving tumor regression ...
Guoqing Hou, Li Lin, Mengjie Xia, Ruohan Liang, Yueyue Zhang, Linna Du, Xuan Cao   +6 more
wiley   +1 more source

Allosteric regulation and catalysis emerge via a common route

, 2008
Allosteric regulation of protein function is a mechanism by which an event in one place of a protein structure causes an effect at another site, much like the behavior of a telecommunications network in which a collection of transmitters, receivers and ...
Goodey, Nina, Benkovic, Stephen J., Stephen J Benkovic, Nina M Goodey   +3 more
core   +1 more source

Macrophage RSAD2 Couples mtDNA Synthesis With a Self‐Amplifying Inflammatory Circuit to Orchestrate Tissue Repair

Advanced Science, EarlyView.
Macrophage RSAD2 dually regulates CMPK2—the rate‐limiting enzyme for mitochondrial DNA synthesis—by suppressing its ubiquitination and promoting its phosphorylation via Csnk2a2 recruitment. This amplifies mtDNA production, which simultaneously activates a cGAS‐STING‐IRF3‐RSAD2 feedforward loop and the NLRP3 inflammasome, driving a self‐sustaining ...
Haomiao Yuan, Shukui Du, Chunfei Li, Xinjie Li, Shuyang Mu, Anran Qu, Hengxu Yan, Chongchong Xu, Jinnong Yang, Jingkai Sun, Yijun Wang, Jiayang Xiao, Fuyuan Zhang, Linlin Wang, Tiegang Li, Rui Zhao, Dawei Guan   +16 more
wiley   +1 more source

Study of Allosteric Regulation of Escherichia coli Aspartate Transcarbamoylase [PDF]

, 2013
Thesis advisor: Evan R. KantrowitzFor nearly 60 years the ATP activation and the CTP inhibition of Escherichia coli aspartate transcarbamoylase (ATCase) has been the textbook example of allosteric regulation.
Zheng, Yunan
core  

DyProL: Dynamic Ensemble Representation Learning for Protein–Nucleic Acid Binding Site Prediction

Advanced Science, EarlyView.
Protein function is represented as a dynamic conformational ensemble rather than a single static structure. A multi‐conformation geometric attention framework aligns, clusters, and learns representative states to capture residue‐ and ensemble‐level signals. Integrating structural dynamics improves interpretable protein‐NA binding prediction and reveals
Pengpai Li, Yiman Liu, Liya Liang, Rongming Liu   +3 more
wiley   +1 more source

Studies on the mechanism of allosteric regulation of M. tuberculosis ATP-phosphoribosyltransferase [PDF]

, 2018
Allosteric regulation is an efficient way of controlling enzymatic activity. In Mycobacterium tuberculosis (Mtb), the causative agent of human tuberculosis, ATPphosphoribosyltransferase (ATP-PRT) catalyses the first and committed step of the biosynthesis
Sintra Pisco, João
core   +1 more source