Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Quiz 2 receptors
| Phosphorylation | The chemical process of adding a phosphate group to a molecular compound. |
| G protein-coupled receptor kinase | An enzyme that catalyzes phosphorylations within cells in response to G-proteins |
| Arrestin | Proteins that inhibit G protein-coupled receptors following phosphorylation of G protein-coupled receptor kinases |
| Tyrosine kinase | Enzymes that act as on/off switches by transferring their attached phosphate group to other molecules in the cell to activate or deactivate them |
| Calmodulin | A molecule that binds to calcium and mediates calcium's secondary messenger actions |
| Glycosylation | A chemical reaction that attaches carbohydrate to proteins or other molecules |
| Catecholamines | A group of molecules dervied from amino acid tyrosine including epinephrine, norepinephrine, and dopamine |
| Ionotropic receptors | Proteins receptors within the plasma membrane that form an ion channel pore |
| Metabotropic receptors | Protein receptors within the plasma membrane that stimulate changes within the cell often via G proteins and activation of secondary messengers |
| Hormone response element | A short sequence of DNA within the promoter region of a gene that binds to a hormone-receptor complex to control gene expression |
| Cyclic AMP | A secondary messenger derived from ATP that initiates multiple biochemical reactions within the cells in response to hormone-receptor binding |
| Signal transduction | A process in which an external signal outside a cell is converted into biochemical changes within the cell |
| G Protein | Guanine nucleotide-binding proteins are intracellular membrance-associated proteins that initiate biochemical reactions within the cell when receptors are activated by chemical signals |
| Iodothyronine deiodinases | An enzyme that removes iodine from thyronin molecules |
| Enzyme-coupled receptors | Receptors within plasma membrane that upon contact with a chemical messenger cause the intracellular part of the receptor to catalyze a reaction |
| Prohormone | A committed precursor of a hormone, usually having mininal hormonal effect by itself |
| Small nuclear ribonucleoproteins (sNRPs-snurps) | Enzymes that remove introns from the pre-mRNA before it leaves the nucleus |
| Clathrin | A surface protein found on cellular vesicles. It has a recognition site for the appropriate molecule to be transported within the correct vesicle to outside of the cell |
| Adenyl Cyclase | An enzyme that catalyzes ATP to cAMP in response to G-proteins |
| Phospholiapse C | Membrane-associated enzymes, which cleave fatty acids and are involved in signal transduction |
| Internalization | A process by which membrane receptors are lost due to endocytosis and recycling of receptors |
| Ligand | A molecule that binds to a receptor such as a hormone or a neurotransmitter |
| Microsomes | Intracellular calcium stores |
Created by:
Jackline2