Positive Control mechanisms act by allowing gene products to be produced only when they are needed. Negative Control mechanisms act by coding gene products until the final product becomes abundant enough to act as a corepressor, thereby activating the regulator gene and shutting down transcription.
Οι μηχανισμοί θετικού ελέγχου δρουν επιτρέποντας την παραγωγή γονιδιακών προϊόντων μόνο όταν χρειάζονται. Οι μηχανισμοί αρνητικού ελέγχου δρουν κωδικοποιώντας γονιδιακά προϊόντα έως ότου το τελικό προϊόν γίνει επαρκές για να δράσει ως συν-αναστολέας, ενεργοποιώντας έτσι το ρυθμιστικό γονίδιο και διακόπτοντας τη μεταγραφή.
| Text | Positive Control mechanisms act by allowing gene products to be produced only when they are needed in a way analogous to competitive inhibition with the inhibitor being the repressor, the enzyme being the operator, and the substrate being the inducer... kind of Negative Control mechanisms act by coding gene products until the final product becomes abundant enough to act as a corepressor, thereby activating the regulator gene and shutting down transcription |
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Tags: biochemistry_7
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