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 ...
Exon
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Definition of exon :
A region of a gene that is present in the final functional transcript (mRNA) from that gene.
Exon
An exon is the portion of a gene that codes for amino acids. In the cells of plants and animals, most gene sequences are broken up by one or more DNA sequences called introns.
Exon Trapping
To increase the size of trapped exons, Johan den Dunnen (Leiden University) proposed a cosmid-based exon-trapping vector.
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.
exon The DNA bases that code for an amino acid sequence. Exons are separated by introns that code for no amino acid sequences. PICTURE ...
exon A segment of an interrupted gene that is represented in the mature RNA product.
Experiment A set of microarray hybridizations that together comprise a single experiment designed to test a given hypothesis.
exon
The coding region of a eukaryotic gene that is expressed. Exons are separated from each other by introns.
exoskeleton ...
Exon. A DNA sequence that is ultimately translated into protein. See DNA.
Exonuclease. See Nuclease.
Express. To translate a gene's message into a molecular product.
Exon One of the parts of a gene whose sequence is present in the mature mRNA.
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.
Exon: The coding sequence of a eukaryotic gene (see also open reading frame).
Exon - intron boundary: Introns end with the dinucleotide ApG [3' splice site / acceptor] and start with the dinucleotide GpT [5' splice site / donor].
Exon shuffling A hypothesis that suggests that new proteins arose in evolution by rearranging exons that encoded discrete structural elements.
Exons Regions of pre-mrna that are retained in mature mrna.
exon
The Biology Project
University of Arizona
Thursday, October 24, 1996
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Exon
- Region of a eukaryotic gene that is expressed via mRNA
Exonuclease ...
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) ...
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.
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.
Exon (← links)
Relaxed mutant (← links)
Primary structures (← links)
Transcription factor (← links)
Nucleotide (← links)
Messenger rnas (← links)
Totiviridae (← links)
Totivirus (← links)
Tubercidin (← links) ...
Pathological heterogeneity is determined to a large extent by the location of mutations in tau Known mutations are either coding region or intronic mutations located close to the splice-donor site of the intron downstream of exon 10.
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.
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, ...
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.
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.
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 ...
Intron DNA sequence that interrupts the protein-coding sequence of a gene; an intron is transcribed into RNA but is cut out of the message before it is translated into protein.
See also: exon ...
 See also: Sequence, Gene, Trans, DNA, Protein
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