Results 81 to 90 of about 632,694 (239)

Flavonoid allosteric modulation of mutated visual rhodopsin associated with retinitis pigmentosa [PDF]

open access: yes, 2017
Dietary flavonoids exhibit many biologically-relevant functions and can potentially have beneficial effects in the treatment of pathological conditions. In spite of its well known antioxidant properties, scarce structural information is available on the ...
Garriga Solé, Pere   +5 more
core   +3 more sources

RINGdb: An integrated database for G protein-coupled receptors and regulators of G protein signaling

open access: yesBMC Genomics, 2006
Background Many marketed therapeutic agents have been developed to modulate the function of G protein-coupled receptors (GPCRs). The regulators of G-protein signaling (RGS proteins) are also being examined as potential drug targets.
Huang Hsien-Da   +5 more
doaj   +1 more source

Genetically Encoded Photo-cross-linkers Map the Binding Site of an Allosteric Drug on a G Protein-Coupled Receptor [PDF]

open access: yes, 2012
G protein-coupled receptors (GPCRs) are dynamic membrane proteins that bind extracellular molecules to transduce signals. Although GPCRs represent the largest class of therapeutic targets, only a small percentage of their ligand-binding sites are ...
Abrol, Ravinder   +5 more
core   +1 more source

G Protein–Coupled Receptor Rhodopsin [PDF]

open access: yesAnnual Review of Biochemistry, 2006
The rhodopsin crystal structure provides a structural basis for understanding the function of this and other G protein–coupled receptors (GPCRs). The major structural motifs observed for rhodopsin are expected to carry over to other GPCRs, and the mechanism of transformation of the receptor from inactive to active forms is thus likely conserved ...
openaire   +3 more sources

Threonine 180 Is Required for G-protein-coupled Receptor Kinase 3- and β-Arrestin 2-mediated Desensitization of the µ-Opioid Receptor in Xenopus Oocytes [PDF]

open access: yes, 2001
To determine the sites in the µ-opioid receptor (MOR) critical for agonist-dependent desensitization, we constructed and coexpressed MORs lacking potential phosphorylation sites along with G-protein activated inwardly rectifying potassium channels ...
Celvert, Jeremy P.   +4 more
core  

Regulators of G protein signalling proteins in the human myometrium [PDF]

open access: yes, 2009
The contractile state of the human myometrium is controlled by extracellular signals that promote relaxation or contraction. Many of these signals function through G proteincoupled receptors at the cell surface, stimulating heterotrimeric G proteins and ...
Abramow-Newerly   +52 more
core   +1 more source

The Interaction of Phospholipase C-{beta}3 with Shank2 Regulates mGluR-mediated Calcium Signal [PDF]

open access: yes, 2005
Phospholipase C-{beta} isozymes that are activated by G protein-coupled receptors (GPCR) and heterotrimeric G proteins carry a PSD-95/Dlg/ZO-1 (PDZ) domain binding motif at their C terminus. Through interactions with PDZ domains, this motif may endow the
Hwang, Jong-Ik   +5 more
core  

Probing the role of the cation–π interaction in the binding sites of GPCRs using unnatural amino acids [PDF]

open access: yes, 2009
We describe a general application of the nonsense suppression methodology for unnatural amino acid incorporation to probe drug–receptor interactions in functional G protein-coupled receptors (GPCRs), evaluating the binding sites of both the M2 muscarinic
Ballesteros   +31 more
core   +3 more sources

Functional classification of G-Protein coupled receptors, based on their specific ligand coupling patterns [PDF]

open access: yes, 2006
Functional identification of G-Protein Coupled Receptors (GPCRs) is one of the current focus areas of pharmaceutical research. Although thousands of GPCR sequences are known, many of them re- main as orphan sequences (the activating ligand is unknown ...
Bakır, Burcu, Sezerman, Uğur
core   +1 more source

Using green fluorescent protein to understand the mechanisms of G-protein-coupled receptor regulation

open access: yesBrazilian Journal of Medical and Biological Research, 1998
G protein-coupled receptor (GPCR) activation is followed rapidly by adaptive changes that serve to diminish the responsiveness of a cell to further stimulation.
S.S.G. Ferguson
doaj   +1 more source

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