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Ligases

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Question

After the formation of peptide bond, the methionine and tRNA are separated by an enzyme known as ______________.

A

tRNA deacylase

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B

DNA ligase

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C

Aminoacyl synthetase

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D

None of the above

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Solution

The correct option is A tRNA deacylase
A. tRNA deacylase
Solution : After the formation of peptide bond, the methionine and tRNA are separated by an enzyme called tRNA deacylase. This prevents any misreading during peptide bond formation in translational machinery.
So the correct answeris " tRNA deacylase".

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Similar questions

Q. Arrange the following events in the order of synthesis of a protein
i) A peptide bond forms
ii) A tRNA matches its anticodon to the codon in the A- site
iii) The movement of second tRNA complex from A-site to P-site
iv) The large subunit attaches to the small subunit and the initiator tRNA fits in the P-site
v) A small subunit binds to the mRNA
vi) The activated amino acid tRNA complex attaches the initiation codon on mRNA

Q. Select an option that shows the correct sequence of the events involved in the translation mechanism.
a. Binding of mRNA to a smaller subunit of ribosome
b. Aminoacylation of tRNA
c. Binding of initiator tRNA to the P-site of the ribosome
d. Formation of polypeptide
e. Formation of a peptide bond between first and second amino acids at the A site

Q. Non-proteinaceous enzyme that acts as a catalyst for the formation of peptide bond is
OR
"All enzymes are proteins." This statement is now modified because an apparent exception to this biological truth is

Q. (a) Name the enzyme responsible for the transcription of tRNA and the amino acid the initiator tRNA gets linked with.
(b) Explain the role of initiator tRNA in initiation of protein synthesis.

Q. Which of the following act as a substrate for an enzyme that charges tRNA molecules?
I. Amino acid
II. ATP
III. tRNA
IV. snRNA

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