Source:http://linkedlifedata.com/resource/umls/id/C0600493
MSH: The sequence at the 5' end of the messenger RNA that does not code for product. This sequence contains the ribosome binding site and other transcription and translation regulating sequences.,NCI: Sequences on the 5' end of messenger RNAs that are not translated into protein. 5'UTR extends from the transcription start site to just before the ATG translation initiation codon. This region contains the ribosome binding site and other transcription and translation regulating sequences.