Results 211 to 220 of about 464,635 (262)
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2017
Extracellular ATP-gated P2X receptors are trimeric non-selective cation channels important for many physiological events including immune response and neural transmission. These receptors belong to a unique class of ligand-gated ion channels composed of only six transmembrane helices and a relatively small extracellular domain that harbors three ATP ...
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Extracellular ATP-gated P2X receptors are trimeric non-selective cation channels important for many physiological events including immune response and neural transmission. These receptors belong to a unique class of ligand-gated ion channels composed of only six transmembrane helices and a relatively small extracellular domain that harbors three ATP ...
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Adhesion receptors in lymphocyte activation
Current Opinion in Immunology, 1994The past several years have seen significant progress in understanding the role of T lymphocyte coreceptors in adhesion and activation. New insights have been gained in several areas: the avidity regulation of beta 1 and beta 2 integrins and their role in signal transduction; the regulation of CD8 avidity; the role of Lck in CD4 coreceptor activity ...
T L, Collins +3 more
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Constitutively active muscarinic receptors
Life Sciences, 2001Mutations that increase constitutive activity and alter ligand binding have been used to investigate the structure and mechanism of activation of muscarinic receptors. These data are reviewed with reference to the recently published three-dimensional structure of rhodopsin.
T A, Spalding, E S, Burstein
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Transcriptional activation by nuclear receptors
Essays in Biochemistry, 2004Transcriptional activation by nuclear receptors (NRs) involves the recruitment of distinct classes of co-activators and other transcription-related factors to target promoters in the chromatin environment of the nucleus. Chromatin has a general repressive effect on transcription, but also provides opportunities for NRs to regulate transcription by ...
Mari Luz, Acevedo, W Lee, Kraus
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Activity of Muscle Receptors in the Kitten
Nature, 1960IN recent experiments1 it was found that the tonic stretch reflex is lacking in the distal muscles of the limbs of the newly born kitten. Evidence was also presented that the gradual appearance of this reflex is due to a postnatal development of its afferent link, because its efferent link can easily be activated from other sources than stretch ...
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Mineralocorticoid Receptors: Distribution and Activation
Heart Failure Reviews, 2005Mineralocorticoid receptors (MR) bind both mineralocorticoids and glucocorticoids with high affinity (deoxycorticosterone = corticosterone >/= aldosterone = cortisol), and are found in both Na(+) transporting epithelia (e.g. kidney, colon) and nonepithelial tissues (e.g. heart, brain).
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Proteinase‐activated receptors: Tethered ligands and receptor‐activating peptides
Drug Development Research, 2003AbstractProteinase‐activated receptors (PARs), newly‐discovered members of the G‐protein‐coupled receptor superfamily, comprising four cloned family members (PARs 1 to 4), are activated by the proteolytic unmasking of a “tethered ligand” sequence situated in the N‐terminal extracellular receptor domain.
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Activation of Progesterone Receptor by ATP
European Journal of Biochemistry, 1981Progesterone-receptor complex from freshly prepared hen oviduct cytosol acquired the ability to bind to isolated nuclei, DNA-cellulose and ATP-Sepharose when incubated with 5-10 mM ATP at 4 degrees C. The extent of this ATP-dependent activation was higher when compared with heat-activation achieved by warming the progesterone-receptor complex at 23 ...
V, Moudgil +5 more
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Platelet Activating Factor Receptors
2003Platelet activating factor (PAF) is a potent pro-inflammatory lipid mediator. Its effects are mediated through cell surface G protein-coupled receptors (GPCRs) that are distributed on numerous cells notably on endothelium [1]. An intracrine mode of action for PAF is proposed based on evidence for intracellular PAF binding sites [2] and retention of ...
A Marilise, Marrache +15 more
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