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intron

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
in·tron  (ntrn)
n.
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.]

intron [ˈɪntrɒn]
n
(Life Sciences & Allied Applications / Genetics) Biochem a stretch of DNA that interrupts a gene and does not contribute to the specification of a protein Compare exon2
[from intr(agenic) (regi)on]

intron  (ntrn)
A segment of a gene situated between exons that does not function in coding for protein synthesis. After transcription of a gene to messenger RNA, the transcriptions of introns are removed, and the exons are spliced together by enzymes before translation and assembly of amino acids into proteins. Compare exon.
ThesaurusLegend:  Synonyms Related Words Antonyms
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"


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? Mentioned in ? References in periodicals archive
 
Two polymorphisms, 3207 and 3253, are present within a region of intron 1 that has been defined as an enhancer element; this element may be absolutely necessary for gene transcription (Jonsson et al.
Before these genes form any protein, cells cut out all the introns and splice together the remaining exons.
4%, driven by Remicade, Zetia/Vytorin and the Intron franchise
 
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