How does the enzyme ATP(CTP):tRNA nucleotidyletransferase aid in quality control of formation of tRNA?
A) It puts a CCA on the 5' end
B) It puts a CCA on the 3' end
C) It puts a CCACCA on the 3' end of defective tRNA molecules or tRNA-like molelcules that are not true tRNA
D) None of these

Question

Quizplus · Accepted Answer

ATP(CTP):tRNA nucleotidyletransferase adds a CCACCA sequence to the 3' end of defective tRNA molecules or tRNA-like molecules that are not true tRNA. This helps in quality control of tRNA formation by preventing these molecules from being used in protein synthesis.

How Does the Enzyme ATP(CTP):tRNA Nucleotidyletransferase Aid in Quality Control