Glossary entry

English term or phrase:

Low Affinity

English answer:

Dorlands Medical Dictionary says..

Added to glossary by Rafaqat Dogar
Mar 15, 2004 08:14
20 yrs ago
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English term

Low Affinity

English Medical Medical: Pharmaceuticals Pharmacodynamic properties
The sentence is as follow:

As a result saquinavir fits closely into the HIV-1 proteinase active sites, in vitro acting as a reversible and selective inhibitor, with approximately a 50,000-fold lower affinity for human proteinases.

Thanks a lot.

Responses

+5
3 mins
Selected

Dorlands Medical Dictionary says..

"1. a special attraction for a specific element, organ, or structure. 2. chemical a. 3. in immunology, a thermodynamic pression of the strength of interaction between a single antigen-binding site and a single antigenic determinant (and thus of the stereochemical compatibility between them), most accurately applied to interactions among simple, uniform antigenic determinants such as haptens. Expressed as the association constant (K liters mole-1), which, owing to the heterogeneity of affinities in a population of antibody molecules of a given specificity, actually represents an average value (mean intrinsic association constant)."

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Note added at 4 mins (2004-03-15 08:18:51 GMT)
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\"causal relationship\"

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Note added at 10 mins (2004-03-15 08:24:56 GMT)
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for chemical affinity Dorlands adds \"the tendency of an atom or compound to combine by chemical reaction with atoms or compounds of unlike composition\"
Peer comment(s):

agree David Sirett : In other words, it binds to human proteinases 50,000 times less strongly than to HIV-1 proteinase.
25 mins
agree Jörgen Slet : David has expressed it much more clearly though :)
38 mins
agree EKM
56 mins
agree Vicky Papaprodromou
1 hr
agree Martinique : Bravo, David!
2 hrs
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4 KudoZ points awarded for this answer. Comment: "Thank you indeed."
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