Medical Dictionary

start codon


Medical Definition of start codon

  1. :  a genetic codon in messenger RNA that stimulates the binding of a transfer RNA which starts protein synthesis <… the AUG codon for methionine functions as the start codon in the vast majority of mRNAs.—Harvey Lodish et al., Molecular Cell Biology, 6th edition, 2007>—called also initiation codon; compare stop codon

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