Submitted by György Chityil ... on Fri, 01/19/2018 - 23:26 Hierarchy: NounDescription: {{genetics}} The sequence at the 5' end of an mRNA molecule that is not translated into protein.Ngram: leader sequenceNgram Text: leader sequenceSource: WiktionaryIssue: 0Wiktionary tag: geneticsNgram Count: 2