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A segment of a gene situated between exons that is removed before translation of messenger RNA and does not function in coding for protein synthesis.

[intr(agenic), occurring within a gene (intra- + genic) + -on.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Genetics) biochem a stretch of DNA that interrupts a gene and does not contribute to the specification of a protein. Compare exon2
[C20: from intr(agenic) (regi)on]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈɪn trɒn)

a noncoding segment in DNA that interrupts a gene-coding sequence or nontranslated sequence. Compare exon.
[1975–80; perhaps intr (o)- + -on1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.intron - sequence of a eukaryotic gene's DNA that is not translated into a protein
deoxyribonucleic acid, desoxyribonucleic acid, DNA - (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information; "DNA is the king of molecules"
coding DNA, exon - sequence of a gene's DNA that transcribes into protein structures; "exons are interspersed with introns"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Hemispherx Biopharma announced that the University of Pittsburgh Medical Center has issued a final report supporting the safety of using Ampligen in combination therapy for the treatment of recurrent ovarian cancer in its Phase 1 trial using Ampligen with Intron A and celecoxib.
Breakpoint regions in chromosome 15 having PML gene include intron 3 (L-long isoform or bcr1 isoform), intron 6 (S-short isoform or bcr3 isoform) and exon 6 (V form or bcr2 isoform).
M2 PHARMA-November 20, 2018-Roivant Sciences signs global licensing agreement with iNtRON Biotechnology
M2 EQUITYBITES-November 20, 2018-Roivant Sciences signs global licensing agreement with iNtRON Biotechnology
Nine different polymorphic sites were observed in exon 3, 4 and 5, while 32 polymorphic sites are observed in intron 3, 4 and 9.
Therefore, bubaline leptin gene exon 2, part of the intron 1 and intron 2 region were amplified and sequenced to identify nucleotide variations in Anatolian water buffaloes.
HONG KONG, June 28, 2018 - (ACN Newswire) - Intron Technology Holdings Limited ("Intron Technology" or the "Group"), a fast-growing automotive electronics solutions provider in China which focuses on providing solutions targeting critical automotive electronic components applied in new energy, body control, safety and powertrain systems, has announced the details of the proposed listing of its shares on the Main Board of The Stock Exchange of Hong Kong Limited ("SEHK") by way of global offering (the "Global Offering").
The most frequent mutation c.5714+5G>A (intron 40) was detected in 19 alleles in 16 patients (13 heterozygous, 3 homozygous) accounting for 16.1% of the total number of alleles (n =118).
A VNTR in intron 4 of eNOS gene is responsible for production of more than 25% of basal plasma NO.
Thus the C allele of the PPAR[alpha] intron 7 polymorphism was found to be more frequent in patients with myocardial infarction and dyslipidemia [15].
AS events are classified into several types: exon skipping, alternative 3' splice site (3'SS), alternative 5' splice site (5'SS), intron retention, mutually exclusive exons, alternative promoter, and poly(A).