| molecular function |
|---|
| | GO:0004930 | | G-protein coupled receptor activity | | Combining with an extracellular signal and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex. |
| | GO:0004935 | | adrenergic receptor activity | | Combining with epinephrine or norepinephrine and transmitting the signal across the membrane by activating the alpha-subunit of an associated heterotrimeric G-protein complex. |
| | GO:0004938 | | alpha2-adrenergic receptor activity | | Combining with epinephrine or norepinephrine to initiate a change in cell activity via activation of a G protein, with pharmacological characteristics of alpha2-adrenergic receptors; the activity involves transmitting the signal to the Gi alpha subunit of a heterotrimeric G protein. |
| | GO:0051379 | | epinephrine binding | | Interacting selectively and non-covalently with epinephrine, a hormone produced by the medulla of the adrenal glands that increases heart activity, improves the power and prolongs the action of muscles, and increases the rate and depth of breathing. It is synthesized by the methylation of norepinephrine. |
| | GO:0005515 | | protein binding | | Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules). |
| | GO:0004871 | | signal transducer activity | | Conveys a signal across a cell to trigger a change in cell function or state. A signal is a physical entity or change in state that is used to transfer information in order to trigger a response. |
| biological process |
|---|
| | GO:0007186 | | G-protein coupled receptor signaling pathway | | A series of molecular signals that proceeds with an activated receptor promoting the exchange of GDP for GTP on the alpha-subunit of an associated heterotrimeric G-protein complex. The GTP-bound activated alpha-G-protein then dissociates from the beta- and gamma-subunits to further transmit the signal within the cell. The pathway begins with receptor-ligand interaction, or for basal GPCR signaling the pathway begins with the receptor activating its G protein in the absence of an agonist, and ends with regulation of a downstream cellular process, e.g. transcription. The pathway can start from the plasma membrane, Golgi or nuclear membrane (PMID:24568158 and PMID:16902576). |
| | GO:0071883 | | activation of MAPK activity by adrenergic receptor signaling pathway | | The series of molecular signals generated as a consequence of an adrenergic receptor binding to its physiological ligand, followed by the activation of a MAP kinase. |
| | GO:0032148 | | activation of protein kinase B activity | | Any process that initiates the activity of the inactive enzyme protein kinase B. |
| | GO:0071880 | | adenylate cyclase-activating adrenergic receptor signaling pathway | | The series of molecular signals generated as a consequence of an adrenergic receptor binding to its physiological ligand, where the pathway proceeds with activation of adenylyl cyclase and a subsequent increase in the concentration of cyclic AMP (cAMP). |
| | GO:0007267 | | cell-cell signaling | | Any process that mediates the transfer of information from one cell to another. This process includes signal transduction in the receiving cell and, where applicable, release of a ligand and any processes that actively facilitate its transport and presentation to the receiving cell. Examples include signaling via soluble ligands, via cell adhesion molecules and via gap junctions. |
| | GO:0035625 | | epidermal growth factor-activated receptor transactivation by G-protein coupled receptor signaling pathway | | The process in which an epidermal growth factor-activated receptor is activated via signaling events from a G-protein coupled receptor. This is an example of cross-talk between the EGF and GPCR signaling pathways. |
| | GO:0032811 | | negative regulation of epinephrine secretion | | Any process that stops, prevents, or reduces the frequency, rate or extent of the regulated release of epinephrine. |
| | GO:0010700 | | negative regulation of norepinephrine secretion | | Any process that decreases the frequency, rate or extent of the regulated release of norepinephrine. |
| | GO:0030168 | | platelet activation | | A series of progressive, overlapping events triggered by exposure of the platelets to subendothelial tissue. These events include shape change, adhesiveness, aggregation, and release reactions. When carried through to completion, these events lead to the formation of a stable hemostatic plug. |
| | GO:0045666 | | positive regulation of neuron differentiation | | Any process that activates or increases the frequency, rate or extent of neuron differentiation. |
| | GO:0006940 | | regulation of smooth muscle contraction | | Any process that modulates the frequency, rate or extent of smooth muscle contraction. |
| | GO:0019229 | | regulation of vasoconstriction | | Any process that modulates the frequency, rate or extent of reductions in the diameter of blood vessels. |
| | GO:0007165 | | signal transduction | | The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell. |
| cellular component |
|---|
| | GO:0016021 | | integral component of membrane | | The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane. |
| | GO:0005887 | | integral component of plasma membrane | | The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane. |
| | GO:0016020 | | membrane | | A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it. |
| | GO:0005886 | | plasma membrane | | The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. |
Description
