Definition, Meaning & Synonyms

start-codon

Noun
/stɑrt ˈkɒdɒn/
Definition
A sequence of nucleotides in messenger RNA that marks the starting point of protein synthesis.
Examples
  • The start codon AUG specifically codes for the amino acid methionine.
  • In genetic engineering, understanding the start codon can aid in designing more effective genes.
Meaning
The start codon is crucial in the process of translation; it signals the ribosome to begin translating the mRNA into an amino acid chain.
Synonyms
  • Initiation codon
  • Start signal