AUG-GGU-CAA-UAA. Each one of these codons corresponds to a specific amino acid. Because there are four possible nucleotides, ...
Tryptophan is unique because it is the only amino acid specified by a single codon. The remaining 19 amino acids are specified by between two and six codons each. The codons UAA, UAG, and UGA are ...
The tRNA that corresponds to the second codon can then bind to the A site ... at the end of a protein-coding sequence in mRNA: UAA, UAG, and UGA. No tRNAs recognize these codons.