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intron

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.03 sec.
intron /in·tron/ (in´tron) a noncoding sequence between two coding sequences within a gene, processed out in the formation of mature mRNA.
in·tron (ntrn)
n.
A segment of a gene situated between exons that does not function in coding for protein synthesis.
intron
untranslated, intervening sequences that are interspersed between coding sequences of a particular gene of almost all eukaryocytic genes and which are excised from the primary RNA transcript to yield mRNA.
intron-exon junction
introns are removed by the catalytic action of small nuclear riboproteins (snRNPs) which bind to special recognition sequences at the 5,(donor junction) and 3,(receptor junction) to form a complex called a spliceosome.
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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.
Genetic variation in genes associated with arsenic metabolism: ... by Klimecki, Walter T. / Environmental Health Perspectives
Before these genes form any protein, cells cut out all the introns and splice together the remaining exons.
Making the Cut by TRAVIS, JOHN / Science News
4%, driven by Remicade, Zetia/Vytorin and the Intron franchise
Research and Markets: Understand How Schering-Plough's Ethical Sales ... by Business Wire
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