How does the tRNA synthetase enzyme charge a tRNA with the correct amino acid?
A. Different tRNA synthetases recognize specific sequences in the final three nucleotides on the 3' end of the tRNA and attach the matching amino acid.
B. Each different tRNA synthetase has one region that recognizes the tRNA anticodon and a second region that attaches the matching amino acid to the CCA at the 3' end of the tRNA.
C. A single tRNA synthetase in the cell is responsible for recognizing specific anticodon sequences and adding the correct amino acid to each tRNA.
D. Different tRNA synthetases recognize specific sequences in the D and T loops of the tRNA and attach the matching amino acid.
Ans: B. Each different tRNA synthetase has one region that recognizes the tRNA anticodon and a second region that attaches the matching amino acid to the CCA at the 3' end of the tRNA.
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