why stop codons doesn't code for an amino acids
1 answer
Stop codons do not code for amino acids because they signal the termination of protein synthesis. There are three types of stop codons (UAA, UAG, and UGA) that do not have corresponding tRNAs with anticodons to recognize them and carry an amino acid. Instead, when a ribosome encounters a stop codon during translation, it signals for the release factor proteins to bind to the ribosome and dissociate it from the mRNA, preventing the addition of any amino acid. This process ensures that the newly synthesized protein is complete and functional.