When the lac operon controls the expression of proteins in the E.coli cell that can break down lactose into two sugars, glucose and galactose. When lactose is present, it binds to the repressor that typically sits on the lac operon, changing the repressor's conformation such that it can no longer bind to the lac operon. Because of this, RNA polymerase can now transcribe the gene into mRNA, <span>which in turn is translated into the proteins that can break down lactose.</span>
The correct answer is: They are released into the cytosol.
A a sequence consisting of 5-30 hydrophobic amino acids on the N-terminus, which is called signal peptide or signal sequence is responsible for directing the transport of the synthesized protein. Proteins that contain such sequence are destined for secretion form the cell (vesicular), for the plasma membrane, the lumen or membrane of either the (ER), Golgi or endosomes. So, when the protein lack the sequence, it is released in the cytosol.
Different steps of the oxidative decarboxylation of pyruvate by the pyruvate dehydrogenase pdh complex are given by placing them in the order as followed.
<h3>What is Oxidative decarboxylation?</h3>
The Oxidative decarboxylation reactions are oxidation reactions wherein a carboxylate institution is removed, forming carbon dioxide. They regularly arise in organic systems: there are numerous examples withinside the citric acid cycle. This sort of response probable began out early on the starting place of life.
- Pyruvate reacts with TPP and is decarboxylated, forming hydroxyethyl-TPP.
- The lipoamide arm movements to the energetic E underline three in which the decreased lipoamide is oxidized through FAD, forming the energetic lipoamide and triangle down ADH2 .
- ADH_ is reoxidized to FAD, lowering NAD to NADH.every so often known as thiamine.
- The acetyl lipoamide arm of E_ movements to the energetic of E_ , in which the acetyl institution is transferred to CoA forming acetyl-CoA and the decreased shape of lipoamide.
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