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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.]


(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]


(ˈɪn trɒn)

a noncoding segment in DNA that interrupts a gene-coding sequence or nontranslated sequence. Compare exon.
[1975–80; perhaps intr (o)- + -on1]
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"
References in periodicals archive ?
However, transcriptional enhancer elements present in the intron increase the basal activity of the [beta]-casein promoter.
Statistical analyses were conducted and correlation coefficients between different variables (total gene length, exon length and intron length) were compared across taxa.
15) Finally, one of the RNA components of the spliceosome (snRNA U5) can functionally substitute for a particular portion of the group II intron (ID3 subdomain stem-loop).
We believe that PEG- INTRON is one of the most advanced medications to treat Hepatitis C on the market today.
Carrat and some of the other investigators reported receiving research grants or travel grants from and/or serving as a consultant to Schering-Plough, which markets Peg-Intron, Intron A, and Rebetol.
Additionally, in February 2001 Schering-Plough launched PEG- INTRON in the United States as a once-weekly monotherapy for the treatment of hepatitis C.
In July, the FDA approved a stand-alone package of Rebetol, which was previously available only in a package with Intron A (marketed as Rebetron).
The safety and efficacy of REBETOL Capsules with interferons other than INTRON A have not been established.
By distributing VFR's entire portfolio, INTRON is offering its customers a variety of resistor configurations and package types to meet their different needs: discrete resistors and resistor networks in surface mount and through-hole (leaded) configurations, customized chip resistor networks, precision trimming potentiometers, and discrete chips for use in hybrid circuits.
Walter and colleagues spied on the splicing process by attaching fluorescent tags to exons on either side of an intron in a short section of RNA they designed specifically for such studies.
Characterization (total gene length, intron and exon number and length, ratio of coding nucleotides to total gene size, details of exons) of CD36 gene was done following information at the NCBI website.