| cooperativity | Phenomenon displayed by enzymes or receptors that have multiple binding sites. Binding of one ligand alters the affinity of the other site. Both positive and negative cooperativity are known, positive cooperativity gives rise to a sigmoidal binding curve. Cooperativity is often invoked to account for nonlinearity of binding data, although it is by no means the only possible cause. (18 Nov 1997) |
|---|---|
| cooperativity model | A model used to explain the property of cooperativity observed in certain enzymes; e.g., allosterism or hysteresis. (05 Mar 2000) |
| positive cooperativity | Cooperativity in which successive ligand molecules appear to bind with increasing affinity. (05 Mar 2000) |
| negative cooperativity | Cooperativity in which successive ligand molecules appear to bind with decreasing affinity. (05 Mar 2000) |
| models, anatomic | Three-dimensional representation to show anatomic structures. (12 Dec 1998) |
| models, biological | Theoretical representations that simulate the behaviour or activity of biological processes or diseases. For disease models in living animals, disease models, animal is available. Biological models include the use of mathematical equations, computers, and other electronic equipment. (12 Dec 1998) |
| models, cardiovascular | Theoretical representations that simulate the behaviour or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment. (12 Dec 1998) |
| models, chemical | Theoretical representations that simulate the behaviour or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment. (12 Dec 1998) |
| models, econometric | The application of mathematical formulas and statistical techniques to the testing and quantifying of economic theories and the solution of economic problems. (12 Dec 1998) |
| models, economic | Statistical models of the production, distribution, and consumption of goods and services, as well as of financial considerations. For the application of statistics to the testing and quantifying of economic theories models, econometric is available. (12 Dec 1998) |
| models, educational | Theoretical models which propose methods of learning or teaching as a basis or adjunct to changes in attitude or behaviour. These educational interventions are usually applied in the fields of health and patient education but are not restricted to patient care. (12 Dec 1998) |
| models, genetic | Theoretical representations that simulate the behaviour or activity of genetic processes or phenomena. They include the use of mathematical equations, computers, and other electronic equipment. (12 Dec 1998) |
| models, immunological | Theoretical representations that simulate the behaviour or activity of immune system, processes, or phenomena. They include the use of mathematical equations, computers, and other electrical equipment. (12 Dec 1998) |
| models, molecular | Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures. (12 Dec 1998) |
| models, neurological | Theoretical representations that simulate the behaviour or activity of the neurological system, processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment. (12 Dec 1998) |