DNA sequences that interrupt the protein-coding sequence of a gene; introns are transcribed into mRNA but the sequences are eliminated from the RNA before it is used to make protein.
intervening sequence. Noncoding DNA sequences that interrupt the coding sequences of some genesin eukaryotic cells. Introns are transcribed into RNA but are splice out of mature mRNAs.
A sequence of DNA that is not part of a gene and is interspersed between exons.
the non-coding spaces between the exons (coding regions) of DNA in a gene myc gene-an oncogene which, when overexpressed and paired with another oncogene, triggers tumorous cell growth. This gene is found in both humans and mice and serves vital functions in normal cells. Oncogenes are designated by a three-letter abbreviation.
A segment of DNA that is transcribed into RNA but is removed enzymatically from the RNA molecule before the mRNA enters the cytoplasm and is translated; also known as an intervening sequence.
the DNA sequence in a eukaryotic gene that is not translated into a protein.
a section of a gene that does not code in the making of mRNA, it is cut out. (see exon)
A non-coding section of DNA within a gene that is not translated to a peptide. Intervening sequences between exons. Introns are featured in the primary transcript (pre-mRNA) but removed by splicing during nuclear RNA processing/editing.
a section of DNA which occurs in a gene. A change in the intron does not affect the structure of that gene. It is also known as an intervening sequence.
A section of a gene that does not contain any instructions for making a protein. Introns separate exons -- the coding sections -- from each other.
Each of the segments of a gene that are not transcribed into messenger RNA and that are found between exons.
A sequence of a gene which is transcribed but which is excised by a splicing reaction before the mature mRNA is translated. Found in Eukarya, Archae, Bacteria, eukaryotic viruses, and phage. Introns are common in eukaryotes, but rarer in prokaryotes.
region of DNA that does not code for the synthesis of a protein
( intervening sequence) A DNA segment of a transcribed gene, the transcript of which is removed in the process of RNA maturation and, therefore, does not appear in the mature RNA molecule. Resides between exons.
Part of a primary transcript (or the DNA encoding it) that is removed by splicing during RNA processing and is not included in the mature, functional mRNA, rRNA, or tRNA; also called intervening sequence.
A noncoding segment of DNA located within a gene.
A portion of a DNA molecule that, because of RNA splicing, is not involved in coding for part of a polypeptide molecule. (Contrast with exon.)
Segments of DNA in a gene that do not code proteins.
A DNA sequence found within a gene that is removed during RNA processing and is not translated into the gene's protein product.
A non-coding sequence of DNA within a gene that is removed by RNA splicing in the nucleus, leaving a mature mRNA that is then translated in the cytoplasm.
Region of DNA which, although located within a gene, does not specify a gene product. Introns are spliced out during transcription. At present the function of an intron is not known.
sequence of a eukaryotic gene's DNA that is not translated into a protein
a generally non-coding sequence of DNA that is initially copied into RNA, but then cut out of the final RNA transcript
an intervening sequence in a gene that does not encode a portion of the protein sequence
a non-coding segment of DNA removed by spliceosomes before the mRNA leaves nucleus
a segment of DNA that is transcribed, but later removed from within the transcript by splicing together the sequences (exons) on either side of it
a specially constructed series of DNA
Non-coding parts of a gene that are 'edited out', and so do not contribute to making the final protein product of the gene. Introns are scattered between the exons of a gene. Their biological function is unknown.
A DNA sequence, or the RNA sequence transcribed from it, that interrupts the sequences coding for a gene product (exons).
A sequence of DNA within a gene that is initially copied into messenger RNA, but is cut out before the messenger RNA is translated and does not have a function in coding for proteins. in vitro fertilisation (IVF) Methods of carrying out fertilisation outside the body, frequently used to assist couples unable to conceive naturally.
The DNA base sequences interrupting the protein-coding sequences of a gene in genomic DNA; these sequences are transcribed into RNA but are cut out (spliced out) of the messenger RNA (mRNA) before it is translated into a protein molecule.
Gene segment between exons, not encoding protein.
The non-coding portions of genes that are found between coding exons. Sequences from introns are spliced out before the gene message is translated into protein.
IN-tron Bases of a gene that are transcribed but are excised from the mRNA before translation into protein. 330
A sequence of DNA that does not code. Introns are sometimes called "junk DNA."
Noncoding DNA segments within a gene, some of which may help regulate the timing and extent of the gene's expression.
Segment of DNA, in eukayotes, which is interspersed among the protein-coding sequences (exons) in a gene. It is excised from the mRNA transcript in order to convert it into a mature messenger RNA molecule containing only coding sequences that can be translated into the amino acid sequence of a coded polypeptide.
A DNA sequence within a discontinous gene that has no protein-coding function. The intron is transcribed into mRNA but is cut out of the message before it is translated into protein.
A noncoding region of a gene that is transcribed, but later spliced out, and therefore is not represented in the final mRNA.
In eukaryotes, bases of a gene transcribed but later excised from the mRNA prior to exporting from the nucleus and subsequent translation of the message into a polypeptide. PICTURE
Introns are portions of genomic DNA which ARE transcribed (and thus present in the primary transcript) but which are later spliced out. They are not present in the mature mRNA. Note that although the 3' flanking region is often transcribed, it is removed by endonucleolytic cleavage and not by splicing. It is not an intron.
a DNA sequence that interrupts the coding sequences (exons) for a gene product. After information from the genes is transcribed into new strands of hnRNA, the introns are spliced out of the RNA molecule, and are not represented in the mature mRNA. Although the functions of introns are unknown, it has been postulated that some introns have a role in regulating gene expression.
In eukaryotic cells, a sequence of DNA that is contained in the gene but does not encode for protein.
A non-coding sequence of DNA within a gene that must be spliced out of a primary transcript to yield a mature, translatable mRNA (see Exon). Intron sequences do not appear in the translated polypeptide.
Part of a gene that is initially transcribed into the primary RNA transcript but then removed from it when the exon sequences on either side of it are spliced together. Also called an intervening sequence.
A nucleotide sequence intervening between exons (coding regions) that is excised from a gene transcript during RNA processing.
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
Non-coding sequence of DNA removed from mature messenger RNA prior to translation Related Terms: RNA ; coding region ; exon ; intronic mutation ; splicing ; transcription ; translation
the portion of the coding sequence of a gene that is not translated into protein.
Noncoding portion of the gene that is spliced out from the nascent RNA transcript in the process of making an mRNA transcript. Frequently includes regulator elements (i.e. binding sites) in addition to those of the promoter.
Non-coding sequence segment within a gene, first transcribed into a RNA, but afterwards removed in the process of RNA maturing (splicing) to mRNA.
in split genes, a segment that is transcribed into nuclear RNA, but is subsequently removed from within the transcript and rapidly degraded
A region of a gene that does not code for a protein.
Noncoding DNA sequence within gene. Initially transcribed into messenger RNA but later snipped out
the parts of the DNA sequence that interrupt the protein coding sequence, therefore often referred to as "non-coding regions." This part of the DNA sequence is transcribed into RNA, but cut out before the protein sequence is translated.
Nucleotide sequences in DNA that are eliminated during the formation of mature mRNA. Also called an intervening sequence.
These are interspersed with introns, longer sections of "extra" or "nonsense" DNA. (IOCeleraGenome)Íntron Os segmentos removidos da molécula do RNA mensageiro correspondem a trechos do gene chamados íntrons; os segmentos que restam se chamam exons. (POFapesp3)
An intervening DNA segment within the gene that is precisely excised following transcription prior to use of the mRNA for protein synthesis.
A gene region that is not translated into protein. Introns are interspersed with coding regions called exons.
The DNA base sequence interrupting the protein coding sequence of a gene; this sequence is transcribed into RNA but is cut out of the message before it is translated into protein.
A noncoding intervening sequence in a gene. The sequences are transcribed into RNA, but are eliminated from the message before it is translated into protein.
A segment of DNA that does not code for protein; the intervening sequence of nucleotides between coding sequences or exons.
Part of the DNA of a gene that does not code for protein.
An intervening sequence of DNA found in some plant genes, which must usually be removed before gene expression can take place.
A DNA sequence - usually with no currently identified function - that interrupts the protein-coding sequence of a gene.
A non-coding sequence located between exons of a gene.
non-coding part of a gene.
The portion of a DNA sequence which interrupts the protein coding sequences of the gene. Most introns begin with the nucleotides GT and end with the nucleotides AG. Figure 6 Translation/Transcription
A segment of RNA transcript that is edited out by the cell and that stays in the nucleus. Introns appear to have a role in controlling gene expression in eukaryotes. Prokaryotes do not have introns. Contrast exon. on. An atom or molecule with an unequal number of protons and electrons. Thus the atom or molecule has either a net positive or a negative charge.
A segment of DNA that is transcribed into mRNA but is then cut off from the RNA, leaving behind the exon sequences to be translated into polypeptides. Back to Homepage
a block of DNA within a gene not encoding a protein. Edited, spliced, out during transcription into mRNA. Originally thought not to contain any information, but more and more this appears not to be the case. Some intron sequences have been shown to regulate gene expression during development (eg c elegans, Lin 14)
The part of the genetic sequence which is not translated into the final gene product or message.
a length of DNA which is interspersed among the protein-coding sequences ( exons) in a gene. Introns are transcribed (see transcription) into mRNA but are then cut out of the mRNA sequence before protein synthesis occurs. See splicing.
Region of DNA which generates that part of precursor RNA which is spliced out during transcription and does not form mature mRNA and therefore does not specify the primary structure of the gene product.
Introns are sections of DNA colinear to the RNA sequence that will be spliced out after transcription, but before the RNA is translated. Introns are common in eukaryotic RNAs of all types, but are found in prokaryotic tRNA and rRNA genes only. The regions of a gene that remain in spliced mRNA are called exons.