Results 11 to 20 of about 2,866 (140)

Inhibition of Subsets of G Protein-coupled Receptors by Empty Mutants of G Protein α Subunits in Go, G11, and G16 [PDF]

open access: yes, 2000
We previously reported that the xanthine nucleotide binding Goα mutant, GoαX, inhibited the activation of Gi-coupled receptors. We constructed similar mutations in G11α and G16α and characterized their nucleotide binding and receptor interaction.
Gu, Lingjie, Simon, Melvin I., Yu, Bo
core   +1 more source

Guanosine 5'-O-(3-thiotriphosphate) inhibits capping of reovirus mRNA.

open access: yesJournal of Biological Chemistry, 1982
RNA synthesized by reovirus cores was not capped or methylated when GTP was replaced by guanosine 5'-O-(3-thiotriphosphate) [gamma-S]GTP as a reaction substrate. Full length transcripts were synthesized in the presence of [gamma-S]GTP which indicated that capping could be dissociated from the process of transcription.
A E, Reeve, A J, Shatkin, R C, Huang
openaire   +2 more sources

Interaction of the Xanthine Nucleotide Binding Goα Mutant with G Protein-coupled Receptors [PDF]

open access: yes, 1998
We constructed a double mutant version of the α subunit of Go that was regulated by xanthine nucleotides instead of guanine nucleotides (GoαX). We investigated the interaction between GoαX and G protein-coupled receptors in vitro.
Simon, Melvin I., Yu, Bo
core   +1 more source

A Peptide Core Motif for Binding to Heterotrimeric G Protein α Subunits [PDF]

open access: yes, 2005
Recently, in vitro selection using mRNA display was used to identify a novel peptide sequence that binds with high affinity to G{alpha}i1. The peptide was minimized to a 9-residue sequence (R6A-1) that retains high affinity and specificity for the GDP ...
Adhikari, Anirban   +4 more
core   +2 more sources

Guanosine 5'-O-(3-thiotriphosphate), a potent nucleotide inhibitor of microtubule assembly.

open access: yesJournal of Biological Chemistry, 1984
Guanosine 5'-O-(3-thiotriphosphate) (GTP gamma S) and the two diastereoisomers of guanosine 5'-O-(2-thiotriphosphate) (GTP beta S) were prepared enzymatically, and their interactions with tubulin and microtubule-associated proteins (MAPs) in 0.1 M 2-(N-morpholino)ethanesulfonate, 0.5 mM MgCl2 were examined.
E, Hamel, C M, Lin
openaire   +2 more sources

Ca2+-Stimulated Catecholamine Release from alpha-Toxin Permeabilized PC12 Cells [PDF]

open access: yes, 1987
Two possible cellular pathways of catecholamines from the chromaffin vesicles of PC 12 cells to the surrounding medium are explored in this study. The direct one circumventing the cytoplasm can be activated in a-toxin-permeabilized cells with micromolar ...
Ahnert-Hilger, G.   +2 more
core   +1 more source

Antiplatelet Activity, P2Y1 and P2Y12 Inhibition, and Metabolism in Plasma of Stereoisomers of Diadenosine 5′,5′″-P1,P4-dithio-P2,P3-chloromethylenetetraphosphate [PDF]

open access: yes, 2014
Background: Diadenosine tetraphosphate (Ap4A), a constituent of platelet dense granules, and its P1,P4-dithio and/or P2,P3-chloromethylene analogs, inhibit adenosine diphosphate (ADP)-induced platelet aggregation.
Barnard, Marc R.   +8 more
core   +3 more sources

ATP-independent Control of Vac8 Palmitoylation by a SNARE Subcomplex on Yeast Vacuoles [PDF]

open access: yes, 2005
Yeast vacuole fusion requires palmitoylated Vac8. We previously showed that Vac8 acylation occurs early in the fusion reaction, is blocked by antibodies against Sec18 (yeast N-ethylmaleimide-sensitive fusion protein (NSF)), and is mediated by the R-SNARE
Cristodero, Marina   +5 more
core   +1 more source

Isotype-specific activation of cystic fibrosis transmembrane conductance regulator-chloride channels by cGMP-dependent protein kinase II [PDF]

open access: yes, 1995
Type II cGMP-dependent protein kinase (cGKII) isolated from pig intestinal brush borders and type I alpha cGK (cGKI) purified from bovine lung were compared for their ability to activate the cystic fibrosis transmembrane conductance ...
Bijman, J. (Jan)   +7 more
core   +2 more sources

Large-Scale Discovery of ERK2 Substrates Identifies ERK-Mediated Transcriptional Regulation by ETV3 [PDF]

open access: yes, 2011
The mitogen-activated protein kinase (MAPK) extracellular signal–regulated kinase 2 (ERK2) is ubiquitously expressed in mammalian tissues and is involved in a wide range of biological processes.
Carlson, Scott M.   +6 more
core   +1 more source

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