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The presence of excess amounts of the final product of the enzyme pathway. This feedback mechanism helps regulate the overall production of the enzyme in response to the cell's current needs, preventing unnecessary synthesis when the product is already abundant.
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What enzyme is inhibited by a nerve agent?
Acetylcholinesterase is the enzyme inhibited by nerve agents. This enzyme is responsible for breaking down the neurotransmitter acetylcholine, and when inhibited, leads to an accumulation of acetylcholine at nerve synapses causing overstimulation of muscles and nerves.
What is enzyme synthesis?
Enzyme synthesis is the process by which cells make enzymes through transcription and translation of the enzyme's gene into a functional protein. This involves the production of mRNA from DNA in the nucleus, and the subsequent translation of this mRNA into the enzyme in the cytoplasm. Enzymes are essential for catalyzing biochemical reactions in cells.
What are inducible and non inducible enzymes?
Inducible enzymes are enzymes whose production is turned on in response to certain signals or molecules, while non-inducible enzymes are constitutively produced regardless of external signals. Inducible enzymes allow organisms to efficiently regulate their metabolism in response to changing environmental conditions, while non-inducible enzymes are always present and active to maintain essential cellular functions.
What enzyme catalyzes the attachment of an amino acid to tRNA?
Aminoacyl-tRNA synthetase is the enzyme responsible for catalyzing the attachment of an amino acid to tRNA. This process is vital for protein synthesis, ensuring that the correct amino acid is paired with its corresponding tRNA molecule.
How cell may vary the amount of enzyme?
Cells can regulate enzyme levels through transcriptional control (activating or repressing gene expression), post-translational modifications (phosphorylation, glycosylation), enzyme degradation, and substrate availability. Different factors such as cellular signals, environmental conditions, and feedback mechanisms can influence the amount of enzyme produced in response to the cell's needs.
How is the synthesis of a constitutive enzyme stopped?
The synthesis of a constitutive enzyme is typically regulated at the transcriptional level. When the cell has sufficient levels of the enzyme, transcription is inhibited by regulatory proteins or feedback mechanisms. This helps maintain a balance between enzyme production and cellular needs.
What enzyme is inhibited by a nerve agent?
Acetylcholinesterase is the enzyme inhibited by nerve agents. This enzyme is responsible for breaking down the neurotransmitter acetylcholine, and when inhibited, leads to an accumulation of acetylcholine at nerve synapses causing overstimulation of muscles and nerves.
Which hormone is inhibited during treatment for BPH?
Alpha-5-reductase is the enzyme that is inhibited in the treatment of BPH. This enzyme is responsible for changing testosterone into dihydrotestosterone (which is stronger).
If an enzyme has been inhibited noncompetitively?
If an enzyme has been inhibited noncompetitively, the inhibitor binds to the enzyme at a site other than the active site, altering the enzyme's shape and reducing its activity. This type of inhibition is not overcome by increasing the substrate concentration.
If a toxic drug inhibited mRNA synthesis what would be most directly affected?
protein synthesis
What is a sentence for inhibited?
His fear of failure inhibited him from taking risks in his career.
What happens if an inhibitor is irreversible?
If an inhibitor is irreversible, it permanently binds to the target enzyme, effectively deactivating it. This can lead to long-lasting effects on enzyme activity and cannot be easily reversed. New enzyme synthesis is typically required to restore enzyme function.
What is the co enzyme required for fatty acid synthesis?
acetyl CoA or Acetyl Co-enzyme A is required for fatty acid synthesis
What is enzyme synthesis?
Enzyme synthesis is the process by which cells make enzymes through transcription and translation of the enzyme's gene into a functional protein. This involves the production of mRNA from DNA in the nucleus, and the subsequent translation of this mRNA into the enzyme in the cytoplasm. Enzymes are essential for catalyzing biochemical reactions in cells.
What is the mechanism of action of sulfonamides?
Sulfonamides inhibit dihydropteroate synthetase so that the bacteria's nucleotide synthesis is inhibited.
What enzyme is responsible for RNA synthesis?
RNA polymerase
What is inhibition and why enzymes need to be inhibited?
Inhibition is the process of slowing down or stopping an enzyme's activity. Enzymes may need to be inhibited to regulate metabolic pathways, prevent the overproduction of certain substances, or to act as a defense mechanism against toxins or pathogens.
