Allostery
Definition
A biochemical phenomenon or structural property of certain proteins (specifically enzymes and receptors) whereby the binding of an effector molecule (ligand) at a specific site (allosteric site) indices a spatial conformational change in another area of the molecule, directly altering its affinity and biological activity at the active site.
Bilingual Equivalents
- Allostery
- Allosteric regulation
Grammatical & Source Details
| Inflection Type | Feminine abstract noun, presenting standard singular-plural and genitive-dative case modifications. |
| Formation | Neoclassical scientific compound merging Greek roots 'allos' (other) and 'stereos' (space/solid), tracking international biochemical lexicons. |
| Spelling / Pronunciation | [ˌæ.loʊ.ˈstɛ.ri] |
| Source | Handbook of Enzymology, Molecular Biochemistry, and Cellular Signaling Systems |
Contextual Usage Examples
RO: Fenomenul de alosterie explică modul în care hemoglobina își mărește afinitatea pentru oxigen pe măsură ce moleculele se leagă succesiv.
EN: The phenomenon of allostery explains how hemoglobin increases its affinity for oxygen as the molecules bind successively.
RO: O alosterie negativă acționează ca un mecanism structural de feedback inhibitor, oprind producția excesivă de metaboliți în celulă.
EN: A negative allostery acts as a structural feedback inhibition mechanism, stopping the excessive production of metabolites in the cell.
RO: Biochimistul a analizat această alosterie structurală pentru a proiecta medicamente țintite care blochează exclusiv situsul reglator.
EN: The biochemist analyzed this structural allostery to design targeted drugs that exclusively block the regulatory site.
Idioms & Phrases
Situs de alosterie / Allosteric binding site
RO: Regiune specifică de pe suprafața unei proteine, distinctă de situsul catalitic activ, unde se fixează moleculele regulatoare.
EN: A specific region on a protein's surface, distinct from the active catalytic site, where regulatory molecules latch onto.
Alosterie structurală enzimatică / Structural enzymatic allostery
RO: Mecanism macromolecular prin care rețeaua tridimensională de aminoacizi transmite impulsul cinetic între subunități proteice.
EN: A macromolecular mechanism through which the three-dimensional amino acid network transmits the kinetic impulse between protein subunits.
Inhibiție prin alosterie / Allosteric inhibition
RO: Proces metabolic de reducere a activității enzimatice cauzat de schimbarea formei geometrice a moleculei după fixarea unui inhibitor.
EN: A metabolic process of reducing enzymatic activity caused by the alteration of the molecule's geometric shape after an inhibitor binds.
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