Results 41 to 50 of about 369,161 (297)

Use of a distant reporter group as evidence for a conformational change in a sensory receptor [PDF]

open access: yes, 1977
A highly sensitive method for demonstrating ligand-induced conformational changes in protein molecules in solution is described. The method utilizes an environmentally sensitive reporter group that is known to be distant from the active site.
Hartig, P. R.   +2 more
core  

Allosteric Activation of the Par-6 PDZ Via a Partial Unfolding Transition [PDF]

open access: yes, 2013
Proteins exist in a delicate balance between the native and unfolded states, where thermodynamic stability may be sacrificed to attain the flexibility required for efficient catalysis, binding, or allosteric control.
Kovrigin, Evgeni L.   +3 more
core   +2 more sources

Making tau amyloid models in vitro: a crucial and underestimated challenge

open access: yesFEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Advances in thiosemicarbazone metal complexes as anti-lung cancer agents

open access: yesFrontiers in Pharmacology, 2022
The great success of cisplatin as a chemotherapeutic agent considerably increased research efforts in inorganic biochemistry to identify more metallic drugs having the potential of treating lung cancer.
Xian-Guang Bai, Yunyun Zheng, Jinxu Qi
doaj   +1 more source

Ligand interactions and protein conformational changes of phosphopyridoxyl‐labeled Escherichia coli phosphoenolpyruvate carboxykinase determined by fluorescence spectroscopy [PDF]

open access: yesEuropean Journal of Biochemistry, 2002
Escherichia coli phosphoenolpyruvate (PEP) carboxykinase catalyzes the decarboxylation of oxaloacetate and transfer of the γ‐phosphoryl group of ATP to yield PEP, ADP, and CO2. The interaction of the enzyme with the substrates originates important domain movements in the protein.
Encinas, MV   +3 more
openaire   +5 more sources

Cyclic nucleotide-gated channels: structural basis of ligand efficacy and allosteric modulation [PDF]

open access: yes, 1997
Most working proteins, including metabolic enzymes, transcription regulators, and membrane receptors, transporters, and ion channels, share the property of allosteric coupling. The term 'allosteric' means that these proteins mediate indirect interactions
Lester, Henry A.   +2 more
core   +1 more source

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

The Opposite Functions of CD30 Ligand Isoforms

open access: yesCurrent Issues in Molecular Biology
TNFSF8/CD30 ligand is a TNF superfamily member expressed on several major immune cell types, including activated monocytes, B, and T cells. The signaling of CD30 ligand through its cognate CD30 receptor has been shown to have effects on cell ...
Ignat Printsev   +2 more
doaj   +1 more source

Novel Hydrogel-Advanced Modified Clay Nanocomposites as Possible Vehicles for Drug Delivery and Controlled Release

open access: yesNanomaterials, 2017
Present study refers to the synthesis of new advanced materials based on poly(methacrylic acid) (PMAA) with previously reported own advanced modified clays by edge covalent bonding.
Raluca Ianchis   +12 more
doaj   +1 more source

Measuring ligand efficacy at the mu-opioid receptor using a conformational biosensor. [PDF]

open access: yes, 2018
The intrinsic efficacy of orthosteric ligands acting at G-protein-coupled receptors (GPCRs) reflects their ability to stabilize active receptor states (R*) and is a major determinant of their physiological effects.
Livingston, Kathryn E   +4 more
core  

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