Protein synthesis begins with a start codon and ends with a stop codon. The most common start codon is AUG, which also codes for the amino acid methionine. The three stop codons are UAA, UAG, and UGA.
Figure 2 shows the 64 codon combinations and the amino acids or stop signals ... At the start of the initiation phase of translation, the ribosome attaches to the mRNA strand and finds the ...
This portion of mRNA is located between the first nucleotide that is transcribed and the start codon (AUG) of the coding region, and it does not affect the sequence of amino acids in a protein ...