| amount | 1. To go up; to ascend. "So up he rose, and thence amounted straight." (Spenser) 2. To rise or reach by an accumulation of particular sums or quantities; to come (to) in the aggregate or whole; with to or unto. 3. To rise, reach, or extend in effect, substance, or influence; to be equivalent; to come practically (to); as, the testimony amounts to very little. Origin: OF. Amonter to increase, advance, ascend, fr. Amont (equiv. To L. Ad montem to the mountain) upward, F. Amont up the river. See Mount. Source: Websters Dictionary (01 Mar 1998) |
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| antibodies, catalytic | Antibodies that can catalyze a wide variety of chemical reactions. They are characterised by high substrate specificity and share many mechanistic features with enzymes. (12 Dec 1998) |
| catalytic | Relating to or effecting catalysis. (05 Mar 2000) |
| catalytic antibody | <chemistry> Antibody raised against a transition state analogue (e.g. A phosphate analogue of a carboxylic acid ester transition state) that can then catalyse the analogous chemical reaction, though not as effectively as a true enzyme. (16 Mar 1998) |
| catalytic centre | See: active centre. (05 Mar 2000) |
| catalytic model | <epidemiology> A (rather misleading name for a) type of compartmental model in which the force of infection is treated as a parameter to be estimated. (05 Dec 1998) |
| catalytic site | <chemistry> The site on an enzyme where the substrate or substrates (the reactants of a chemical or biochemical reaction) attach in order to convert to the product or products of the reaction, at a much higher speed than the substrate would need to convert to the product alone. (16 Mar 1998) |
| RNA, catalytic | RNA which contains an intron sequence that has an enzyme-like catalytic activity. This intron sequence has been shown to fold up to form a complex surface that can function like an enzyme in reactions with other RNA molecules and thus synthesise new molecules even in the absence of protein. (12 Dec 1998) |