Codon Initiator Codon A codon that directs initiation of protein translation (Translation, Genetic) by stimulating the binding of initiator tRNA (RNA, TRANSFER, MET). In prokaryotes, the codons AUG or GUG can act as initiators while in eukaryotes, AUG is the only initiator codon. Initiation Codons Start Codon http://purl.bioontology.org/ontology/MESH/D018387 MESH:D018387 Sufficient Codon, Initiation Start Codons SCDO:0004716 Initiation Codon Initiator Codons Codon, Initiator