Which mRNA codon usually signals the beginning of protein synthesis?

3 Answers

• AUG is the universal start codon.(AUG also codes for methionine besides being a start codon) But in some very very very rare cases, GUG and UUG also act as start codons.

• AUG usually indicates the beginning of protein synthesis

• AUG

  but in the mitochondrial language it means methionine