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exon Definition

ex·on (ek′sän)

noun

a sequence in the genetic code that supplies the information for protein formation

exon Usage Examples

Converse of object

  • code: Highly conserved features, such as coding exons or repeats should be masked to reduce the number of false positive hits.
  • contain: It also appears that there is a highly similar mouse homologue to that gene, however containing a few extra exons.
  • amplify: The mixes can be used to amplify all exons stated in the tables provided.
  • splice: It appears that about 5 % of alternatively spliced internal exons in the human genome originate in an Alu sequence.
  • predict: More specifically, these are genes where the matching cDNAs match some bases of every predicted exon.
  • lack: Except for lacking exons, these pseudogenes contained several nucleotide substitutions, insertions and deletions.

Converse of subject

  • encode: It includes 486 amino acids, encoded by three exons.

Adjective modifier

  • different: Often, a single gene can encode several different mRNA transcripts, caused by the cell- or tissue-specific combination of different exons.
  • first: Firstly, we clustered cDNAs based on first exons to predict TSS roughly.
  • last: This SNP is located in a splicing region, just before the last exon, and might originate a splicing variant with functional consequences.
  • internal: A second pipeline is under development to catch failures, targeting internal exons of Vega genes.
  • small: There are a number of very small exons in both plants and animals.
  • many: If its genomic position is known how many exons does it have, what are the flanking markers and the genomic environment.

Modifies a noun

  • shuffling: The introduction of new, useful, genes as well as occasional beneficial effects of mutation and exon shuffling are rare chance events.
  • sequence: For each ORF, exon sequence is amplified by PCR using gene-specific primer pairs.
  • deletion: RESULTS: Small deletions, insertions and whole exon deletion in the RB1 gene were detected from genomic DNA.
  • mutation: Three of these four HCCs did not have p53 exon mutations.

Noun used with modifier

  • gene: Typically a mutation in one of these genes causes exon skipping with the deletion of exon 6 from the corresponding mRNA.

Preposition: of

  • gene: Mutation screening of all 65 exons of the fibrillin-1 gene in 60 patients with Marfan syndrome: report of 12 novel mutations.

Preposition: from

  • gene: Get another exon from this gene ( * No * )?