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intron

intron

6 8.4
A part of a gene that does not make protein and is cut out from RNA before it is used
  • noun
  • /ˈɪntrɒn/
  • Specialized
translation icon : intrón
  • Some conserved intron retention events exhibit high cross-species sequence conservation based on multiple sequence alignments (Figure S1 in File S1).
  • intron-exon
  • gene introns

Examples

  • And what happens in splicing is that the introns are chopped out, OK?

  • The tyrosinase gene contains several introns, so for DNA amplification by PCR, we selected primers represented on different exons of the gene.

    Academic text (1992)
  • Lots of organisms have lots and lots of introns, and those introns are often very big.

  • Then you could ask him why he believes that all intron sequences (about 20% of our genome) are functional.

    Blog text (18)
  • The structure of the full gene with its long introns can also be readily attained.

    Academic text (2009)
  • Intron gain might promote the increased expression (thick black arrow) of a transferred gene.

    Academic text (2018)
  • CiRNAs were first discovered by Zhang and colleagues in human cells and are derived only from introns.

    Academic text (2017)
  • To validate the intron-exon structure predicted by the computer software, full-length cDNA was cloned for the candidate gene.

    Academic text (2018)
  • The difference in lengths of conserved retained introns vs. nonconserved retained introns (i.e., unique to only one species) varies across the nine species examined.

    Academic text (2017)
  • In the process of gene expression, introns are removed from the RNA transcript before translation.

Antonyms

exon
  • Specialized
3 9.6

A part of a gene that contains instructions to make a protein

Surface Forms

intron singular
introns plural

Etymology

Intron comes from the part intra- meaning 'inside' and the ending -on used in biology. So, an intron is an 'inside' piece of a gene that is cut out and does not become protein.