The correct AUG start codon (green) differs from all other AUG triplets (red) through its position in a single-strand (unstructured) region of the messenger RNA (black). Advanced Search Home ...

Methionine is specified by the codon AUG, which is also known as the start codon. Consequently, methionine is the first amino acid to dock in the ribosome during the synthesis of proteins.

(1) Translation begins when a ribosome (gray) docks on a start codon (red) of an mRNA molecule in the cytoplasm. (2) Next, tRNA molecules attached to amino acids (spheres) dock at the ...

This degeneracy provides a layer of protection against mutations, as some mutations in the third nucleotide of a codon may not change the amino acid that is specified. Protein synthesis begins with a ...