Exon

exon
any non-intron section of the coding sequence of a gene; together, the exons constitute the mRNA and are translated into protein
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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Exon skipping has also been demonstrated to occur during RNA processing of the ornithine aminotransferase and minute virus of mouse mRNAs.
Known mechanisms of regulating splicing do not account for feedback from translation.
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In many genes, each exon contains part of the open reading frame (ORF) that codes for a specific portion of the complete protein, however, the term exon is often misused to refer only to coding sequences for the final protein.
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Each exon codes for a specific portion of the complete protein. In some species (including humans), a gene's exons are separated by long regions of DNA (called introns or sometimes "junk DNA") that have no apparent function.
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Exon Trapping
To increase the size of trapped exons, Johan den Dunnen (Leiden University) proposed a cosmid-based exon-trapping vector.
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Exon
The protein-coding DNA sequence of a gene. Compare intron.
Amino acid ...
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Exon
The sequence in a spliced gene that is retained after removal of the introns to provide the mature mRNA that is translated by the ribosome.
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exon The DNA bases that code for an amino acid sequence. Exons are separated by introns that code for no amino acid sequences. PICTURE ...
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EXON The portion of a gene that is actually translated into protein (see INTRON, SPLICING).
EXONUCLEASE - An enzyme which hydroylzes DNA beginning at one end of a strand, releasing nucleotides one at a time (thus, there are 3' or 5' exonucleases) ...
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exon
The coding region of a eukaryotic gene that is expressed. Exons are separated from each other by introns.
exoskeleton ...
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Exon: Those portions of a genomic DNA sequence which WILL be represented in the final, mature mRNA. The term "exon" can also be used for the equivalent segments in the final RNA.
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exon - segment of DNA sequence in a gene that will be transcribed in the nucleus, spliced to other exons, and transported to the cytoplasm as a part of the mature mRNA; see also intron.
Back to the Top ...
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exon Part of the mRNA as transcribed from the DNA that contains a portion of the information necessary for final gene product.
exopod, exopodite. Lateral branch of a biramous crustacean appendage.
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Exon: Those portions of a genomic DNA sequence which will be represented in the final, mature mRNA ie. A contiguous segment of genomic DNA that codes for a polypeptide in a gene.
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Exon shuffling
: A hypothesis that suggests that new proteins arose in evolution by rearranging exons that encoded discrete structural elements.
Exonuclease ...
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gene splicing The enzymatic attachment of one exon to another. general acid-base catalysis Catalysis involving a proton transfer from/to a molecule other than water. Compare to specific acid-base catalysis.
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I've mentioned the term exon shuffling in several of my posts, so I might as well get around to explaining what the hell I'm talking about.
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Protein-mediated: spliceosomes, huge molecular structures composed of small nuclear ribonuclear proteins (snRNPs (pronounced "snurps")), splice the 3' end of the first exon, form the intron into a lariat, splice the 5' end of the next exon, ...
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For example, early in the differentiation of a B cell (a lymphocyte that synthesizes an antibody) the cell first uses an exon that encodes a transmembrane domain that causes the molecule to be retained at the cell surface.
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The programs that try to predict genes look for what we call "splicing sites," the sites that are used to splice one exon onto another exon in an RNA. We've got a little information about the nature of splicing sites.
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A DNA segment of largely unknown function within a gene that specifically interupts the coding (exon) sequences of that gene.
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RNA splicing - RNA-processing step in which all of the intron sequences are removed and exon sequences are kept therebv producing a much shorter RNA molecule.
second law of thermodynamics - the degree of disorder in the universe can only increase ...
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