Carbon catabolite repression, or simply catabolite repression, is an important part of global control system of various bacteria and other micro-organisms. Catabolite repression allows bacteria to adapt quickly to a preferred (rapidly metabolisable) carbon and energy source first. This is usually achieved through inhibition of synthesis of enzymes involved in catabolism of carbon sources other than the preferred one. The catabolite repression was first shown to be initiated by glucose and therefore sometimes referred to as the glucose effect. However, the term "glucose effect" is actually a misnomer since other carbon sources are known to induce catabolite repression. Catabolite repression by the catabolite activator protein is a well-known example of a modulon.
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Famous quotes containing the word repression:
“Since the death instinct exists in the heart of everything that lives, since we suffer from trying to repress it, since everything that lives longs for rest, let us unfasten the ties that bind us to life, let us cultivate our death wish, let us develop it, water it like a plant, let it grow unhindered. Suffering and fear are born from the repression of the death wish.”
—Eugène Ionesco (b. 1912)