A 'Start Codon' is the codon that allows the beginning of translation and polypeptide synthesis. Start codons are almost always AUG and therefore bound to by a tRNAMet molecule, after which the following codons can bind to their complementary tRNA molecules and a peptide is subsequently synthesised. As a result of AUG start codons, all polypeptides start with a Methionine.
- ↑ D L Hartl, M Ruvolo. (2012) GENETICS, 8th edition: Jones and Bartlett Learning.