The deaminoacylated tRNA leaves the ribosome as the growing polypeptide passes through the tunnel of the large ribosomal subunit from the ________.

Question

Quizplus · Accepted Answer

The deaminoacylated tRNA exits from the E site of the ribosome, which is the location where the uncharged tRNA is located before it is released from the ribosome. The growing polypeptide chain passes through the tunnel of the large ribosomal subunit, which consists of the 50S subunit in prokaryotes and the 60S subunit in eukaryotes. The small ribosomal subunit, which consists of the 30S subunit in prokaryotes and the 40S subunit in eukaryotes, plays a role in aligning the mRNA and the tRNA during translation. Protein factors, such as elongation factors, assist in the binding of the correct tRNA to the A site of the ribosome and the translocation of the mRNA-tRNA complex. The P site of the ribosome is the location where the peptidyl-tRNA is situated during translation.

The Deaminoacylated TRNA Leaves the Ribosome as the Growing Polypeptide