| receptors, cyclic AMP | Cell surface proteins that bind cyclic AMP with high affinity and trigger intracellular changes which influence the behaviour of cells. The best characterised cyclic AMP receptors are those of the slime mold dictyostelium discoideum. The transcription regulator cyclic AMP receptor protein of prokaryotes is not included nor are the eukaryotic cytoplasmic cyclic AMP receptor proteins which are the regulatory subunits of cyclic AMP-dependent protein kinases. (12 Dec 1998) |
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| receptors, cytoadhesin | A group of integrins that includes the platelet outer membrane glycoprotein gpiib-iiia (platelet glycoprotein gpiib-iiia complex) and the vitronectin receptor (receptors, vitronectin). They play a major role in cell adhesion and serve as receptors for fibronectin, von willebrand factor, and vitronectin. (12 Dec 1998) |
| receptors, cytokine | Cell surface proteins that bind cytokines and trigger intracellular changes influencing the behaviour of cells. (12 Dec 1998) |
| receptors, cytoplasmic and nuclear | Proteins in the cytoplasm or nucleus that specifically bind signalling molecules and trigger changes which influence the behaviour of cells. The major groups are the steroid hormone receptors, which usually are found in the cytoplasm, and the thyroid hormone receptors, which usually are found in the nucleus. Receptors, unlike enzymes, generally do not catalyze chemical changes in their ligands. (12 Dec 1998) |
| receptors, dopamine | Cell-surface proteins that bind dopamine with high affinity and trigger intracellular changes influencing the behaviour of cells. (12 Dec 1998) |
| receptors, dopamine d1 | A class of dopamine receptors identified by their binding profiles for synthetic ligands, their molecular biology, and, perhaps, by their mode of action. (12 Dec 1998) |
| receptors, dopamine d2 | A class of dopamine receptors identified by their binding profiles for synthetic ligands, their molecular biology, and, perhaps, their mode of action. (12 Dec 1998) |
| receptors, drug | Proteins that bind specific drugs with high affinity and trigger intracellular changes influencing the behaviour of cells. Drug receptors are generally thought to be receptors for some endogenous substance not otherwise specified. (12 Dec 1998) |
| receptors, eicosanoid | Cell surface proteins that bind eicosanoids with high affinity and trigger intracellular changes influencing the behaviour of cells. Among the eicosanoid receptors are receptors for the prostaglandins, thromboxanes, and leukotrienes. (12 Dec 1998) |
| receptors, endothelin | Cell surface proteins that bind endothelin with high affinity and trigger intracellular changes which influence the behaviour of cells. (12 Dec 1998) |
| receptors, epidermal growth factor-urogastrone | Glycoproteins of about 170 kD that have protein kinase activity and span the plasma membranes of growing cells, including tumours. They are activated by the binding of epidermal growth factor-urogastrone which then initiates DNA and protein synthesis. They are not found on mitotically quiescent cells except in the stomach where they control the synthesis and release of digestive enzymes and gastric acid. Transforming growth factor alpha also binds to and activates these receptors. (12 Dec 1998) |
| receptors, erythropoietin | Cell surface proteins that bind erythropoietin with high affinity and trigger intracellular changes influencing the behaviour of cells. (12 Dec 1998) |
| receptors, estradiol | Cytoplasmic proteins that bind estradiol, migrate to the nucleus, and regulate DNA transcription. (12 Dec 1998) |
| receptors, fc | Molecules found on the surface of some, but not all, B-lymphocytes, T-lymphocytes, and macrophages, which recognise and combine with the fc (crystallizable) portion of immunoglobulin molecules. (12 Dec 1998) |
| receptors, fibroblast growth factor | Specific molecular sites or structures on cell membranes that react with fibroblast growth factors (both the basic and acidic forms), their analogs, or their antagonists to elicit or to inhibit the specific response of the cell to these factors. These receptors frequently possess tyrosine kinase activity. (12 Dec 1998) |