In: Biology
A tRNA molecule has the anticodon sequence 3' GUU 5'. What amino acid will it be carrying?
a. | Asn | |
b. | Leu | |
c. | Gln | |
d. | Val |
When the ribosome reaches a stop codon on the mRNA, no corresponding tRNA enters the A site. If the translation reaction were to be experimentally stopped at this point, before the binding of release factors, which of the following would you be able to isolate?
separated ribosomal subunits, a polypeptide and free tRNA | ||
an assembled ribosome with a separated polypeptide | ||
separated ribosomal subunits with a polypeptide attached to the tRNA | ||
an assembled ribosome with a polypeptide attached to the tRNA in the P site. |
1. c) Gln
The corresponding codon for anticodon 3'GUU5' is 5' CAA 3' and the corresponding amino acid is Gln.
2. d) an assembled ribosome with a polypeptide attached to the tRNA in the P site.
Release factor is a protein that facilitates the termination of translation by recognizing the termination codon. They release the newly synthesized peptide from the ribosome.