Medical Dictionary

start codon

noun

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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