Which of the following is NOT a function of Aa-tRNA-synthetase?Group of answer choicesTo catalyse the formation of peptide bonds.Specific recognition of amino acids and tRNAs.Hydrolysis of ATP to make AMP-amino acid and pyrophosphate.To create a high energy bond between tRNA and amino acids.To attach amino acids with the right tRNA.
Question
Which of the following is NOT a function of Aa-tRNA-synthetase?Group of answer choicesTo catalyse the formation of peptide bonds.Specific recognition of amino acids and tRNAs.Hydrolysis of ATP to make AMP-amino acid and pyrophosphate.To create a high energy bond between tRNA and amino acids.To attach amino acids with the right tRNA.
Solution
The function that is NOT a role of Aminoacyl-tRNA synthetase (Aa-tRNA-synthetase) is:
- To catalyse the formation of peptide bonds.
Here's why:
-
Aminoacyl-tRNA synthetase is an enzyme that plays a crucial role in protein synthesis. It attaches the correct amino acid to its corresponding tRNA molecule. This process is also known as 'charging' the tRNA.
-
The enzyme recognizes both the amino acid and the tRNA, ensuring that each tRNA molecule is paired with the correct amino acid.
-
The attachment of the amino acid to the tRNA requires energy, which is provided by the hydrolysis of ATP to AMP and pyrophosphate.
-
However, the formation of peptide bonds, which link amino acids together to form proteins, is not carried out by Aminoacyl-tRNA synthetase. This is the job of the ribosome during the process of translation.
Similar Questions
In the activation of an amino acid for protein synthesisGroup of answer choicestwo separate enzymes are required, one to form the aminoacyl adenylate, the other to attach the amino acid to the tRNAmethionine is first formylated and then attached to a specific tRNAthe amino acid is attached to the 5 end of the tRNA through a phosphodiester bondthere is at least one specific aminoacyltRNA synthetase and one specific tRNA for each amino acidAll of the above
Which of the following enzymes catalyzes the reaction that activates amino acids? A. ATP sintetasies / ATP synthetases B. Amino-asiel-tRNA sintetase / Aminoacyl-tRNA synthetase C. Peptidases / Peptidases D. Translokases / Translocases
Aminoacyl-tRNA synthetases (amino acid activating enzymes): Group of answer choicesin conjunction with another enzyme attach the amino acid to the tRNA.interact directly with free ribosomes.“recognize” specific tRNA molecules and specific amino acids.occur in multiple forms for each amino acid.require GTP to activate the amino acid.
The enzymes that reloads empty tRNA molecules with the proper amino acid.Group of answer choicesspliceosomeRNA polymeraseaminoacyl-tRNA synthetasepolyribosometranscription factor
The process in which amino acids are attached to tRNA molecules is called A. Amino acid activation B. Codon activation C. Anticodon activation D. tRNA activation
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.