Start codon

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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.

[1]

  1. D L Hartl, M Ruvolo. (2012) GENETICS, 8th edition: Jones and Bartlett Learning.