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exon
1[ ek-son ]
noun
- (in Britain) one of four yeomen of the guard who act as commanding officers in the absence of higher authority.
exon
2[ ek-son ]
noun
- any portion of an interrupted gene that is represented in the RNA product and is translated into protein.
exon
1/ ˈɛksɒn /
noun
- one of the four officers who command the Yeomen of the Guard
exon
2/ ˈɛksɒn /
noun
- any segment of a discontinuous gene the segments of which are separated by introns Compare intron
exon
/ ĕk′sŏn /
- A segment of a gene that contains information used in coding for protein synthesis. Genetic information within genes is discontinuous, split among the exons that encode for messenger RNA and absent from the DNA sequences in between, which are called introns . Genetic splicing, catalyzed by enzymes, results in the final version of messenger RNA, which contains only genetic information from the exons.
- Compare intron
exon
- Stretches of DNA in genes that code for proteins . In eukaryotes , exons in a given gene are generally separated from each other by stretches of DNA that do not contain instructions for constructing proteins. ( Compare intron .)
Derived Forms
- exˈonic, adjective
Word History and Origins
Origin of exon1
Word History and Origins
Origin of exon1
Origin of exon2
Example Sentences
As introns are removed during splicing, one exon also gets axed from the resulting SMN2 RNA—exon 7.
Scientists took a few hundred thousand random molecules and tested each one in cells to see which ones increase SMN2 exon 7 splicing.
Although the final drug, Evrysdi, is safe and effective, scientists are still debating how it functions at the molecular level—in particular, how it singles out SMN2 exon 7 among the vast number of other exons.
The cell then snips out these extraneous bits, leaving only exons to form mature RNA that can make proteins.
In 1837 he was appointed exon of the Yeomen of the Guard, which he held up to 1849.
Exon librum istum cum pari suo, in festo Annuntiationis Dominice.
But, it will be seen, the 'tenuit' of Domesday is equated by the 'emit' of the Exon book.
We have not seen dominicum used as a substantive; but in the Exon.
I do not believe that there could be found under heaven another man like this exon.
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