intron

Vector

...plasmid vector was prepared that contained the intron and parts of the exons downstream of a phage RNA polymerase promoter . Full article >>> The P elements were vector ed into D. melanogaster via a parasitic mite that targets both these species . This mite punctures the ex...

Template

...as a template RNA splicing - process in which intron sequence s are excised from RNA molecule s in the nucleus during formation of messenger RNA ... Full article >>> Sense DNA strand or partner strand that is complement ary to template for RNA transcription . Relat...

Suppression

... transposition . In germ cells , removal of the intron is allowed. The active transposase is made. This is an example of regulation by differential splice site suppression . Full article >>>...

Substrate

...linear (faster) and circular (slower) form of the intron are released. Full article >>> These researchers argue that the combinatorial nature of transcription al regulation allows a rich substrate for morphological diversity, since variation s in the level, pattern, or timing of gene e...

Stop codon

...top codon , loss of an exon , or inclusion of an intron . Mutation of a splice site reducing specificity. Full article >>> of representing candidate solutions in a robust way does not arise in nature, because the method of representation used by evolution , namely the genetic code , ...

Splicing factor

...to mature m RNA molecule s; that is, to cut out intron regions and splice the exon regions. Full article >>> The regulation and selection of splice sites is done by Serine/Arginine- residue proteins , or SR proteins . The use of alternative splicing factors leads to a modificati...

Spliceosome

...assembly that interacts with the ends of an RNA intron in splicing RNA ; releases an intron and joins two adjacent exons . Full article >>> Most GU-AG splicing is catalyzed ...

Splicing

...icing re action is self-contained; that is, the intron - with the help of associated proteins - splice...g - RNA - processing step in which all of the intron sequence s are removed and exon sequence s are kept therebv producing a much shorter RNA mol...

Somatic cells

...#62; In somatic cells , removal of the 5' most intron is prevented, so that a truncated protein , missing sequence encoded by the last exon , is produced P element pre-mRNA . The resulting truncated protein acts as a repressor of transposition . Full article >>> Most somatic c...

Somatic cell

...2; In somatic cell s , removal of the 5' most intron is prevented, so that a truncated protein , missing sequence encoded by the last exon , is produced P element pre-mRNA . The resulting truncated protein acts as a repressor of transposition . Full article >>> Most somatic ...

SnRNP

...he RNA components of snRNP s interact with the intron and may be involved in cata lysis . Full article..., splice the 3' end of the first exon , form the intron into a lariat, splice the 5' end of the next exon , ... Full article >>> Another s...

Somatic

...2; In somatic cells , removal of the 5' most intron is prevented, so that a truncated protein , missing sequence encoded by the last exon , is produced P element pre-mRNA . The resulting truncated protein acts as a repressor of transposition . Full article >>> sensory somati...

Self-splicing

.... Full article >>> Self-splicing intron that requires an external guanine -containing nucleotide for splicing ; releases the intron in a linear form. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ... Full article >>&...

Segment

...toplasm as a part of the mature m RNA ; see also intron . Back to the Top ... Full article >>> : A DNA segment coding for a specific polypeptide , and includes its own start and stop codon s. When an m RNA encodes two or more proteins , it is called polycistronic . Clade ... F...

RNA Splicing

...ng - RNA - processing step in which all of the intron sequence s are removed and exon sequence s ar...; RNA splicing is the normal process in which intron sequence s are removed from the pre-mRNA , producing the m RNA , which corresponds to the exons ...

RNA

...ng - RNA - processing step in which all of the intron sequence s are removed and exon sequence s are kept therebv producing a much shorter RNA molecule . second law of thermodynamics - the degree of dis order in the universe can only increase ... Full article >>> RNA : See Ribo...

Repressor

... transposition . In germ cells , removal of the intron is allowed. The active transposase is made. This is an example of regulation by differential splice site suppression . Full article >>>...

Reading frame

...ne (see also open reading frame ). Exon - intron boundary ... Full article >>> Frame-shift mutation s occur when the reading frame of the gene is shifted by addition or deletion of one or more bases . With the exception of mitochondria , all organ isms use the same gene...

Processing

...ng - RNA - processing step in which all of the intron sequence s are removed and exon sequence s are kept therebv producing a much shorter RNA molecule . second law of thermodynamics - the degree of dis order in the universe can only increase ... Full article >>> Exons -- porti...

Primer

...as a template RNA splicing - process in which intron sequence s are excised from RNA molecule s in the nucleus during formation of messenger RNA ... Full article >>> Most often used to describe the binding of a short primer or probe . Antibiotic . A class of natural and sy...

Primary transcript

...rt of the normal gene primary transcript , but intron sequence s are not found in the functional m RNA . Intron sequence s are removed from the primary transcript by a splicing mechanism. Full article >>> Extr action of sequence corresponding to the primary transcript of eac...

Pre-mRNA

...; RNA splicing is the normal process in which intron sequence s are removed from the pre-mRNA , producing the m RNA , which corresponds to the exons . Full article >>> Simple illustration of pre-mRNA to m RNA splicing . Introns sometimes allow for alternative splicing of a gen...

Plasmid

...on a plasmid DNA was engineered to contain an intron . The Ty element was placed next to a gal promoter . The gal promoter is inducible in yeast cells by the addition of galactose. Full article >>> In DNA cloning , the plasmid or phage chromosome used to carry the clone d ...

Open reading frame

...gene (see also open reading frame ). Exon - intron boundary ... Full article >>>...

Message

...ing the protein - coding sequence s of a gene ; intron sequence s are trans cribed into RNA but are cut out of the message before it is trans lated into protein . Full article >>> incomplete dominance Referring to the phenotypic expression for a given trait demonstrating a b...

Introns

...les night vision. Full article >>> intron An intervening or noncoding segment of a gene ; introns separate exons . introvert A tubular, eversible extension of the head, bearing the mouth at its tip. invagination An infolding of a layer of tissue to form a sac-like structure. Full...

Intron

...rt of the normal gene primary transcript , but intron sequence s are not found in the functional m RNA...ng theories as to the evolution ary origin of intron s , which is usually studied in a highly conserved family of genes such as the actin s. Full art...

Insert

...62;> intercalate - to insert or interpose intron - "intervening sequence ," a stretch of nucleic acid sequence spliced out from the primary RNA transcript before the RNA is trans ported to the cytoplasm as a mature m RNA ; ... Full article >>> To increase the number of...

Genomic DNA

...me containing all coding ( exon ) and noncoding ( intron and other) sequence s in contrast to c DNA . which contains only coding sequence s. Related Terms: Deoxyribonucleic acid ( DNA ) ... Full article >>> genomic DNA - nuclear DNA of the chromosomes . genomic equivalence - concep...

Genetic material

...otein -coding DNA sequence of a gene . Compare intron . Full article >>> germ plasm Genetic material that may be preserved for future agricultural, commercial, and ecological values ( plant seeds or parts or animal eggs, sperm , and embryo s). germ Embryo of a cereal grain. Full...

Fungi

...hese peptides , maturases, appear to function in intron removal. Their encoding in introns results in homeostatic regulation of their production. Full article >>> Two successive nuclear division s (with corresponding cell division s) that produce haploid gametes (in animals ) or ...

Exons

...plasmid vector was prepared that contained the intron and parts of the exons downstream of a phage...cing ... Full article >>> any non- intron section of the coding sequence of a gene ; together, the exons constitute the m RNA and are ...

Exon

exon any non- intron section of the coding sequence of a gene ; tog...otein -coding DNA sequence of a gene . Compare intron . Amino acid ... Full article >>> Exon The sequence in a spliced gene that i...

Exogenous DNA

...in -coding DNA sequence of a gene . See also: intron ... Full article >>> Exogenous DNA : DNA origin ating outside an organ ism. Exon : Those portions of a genomic DNA sequence which will be represented in the final, mature m RNA ie. A contig uous segment of genomic DNA ...

Evolutionarily conserved

...in -coding DNA sequence of a gene . See also: intron ... Full article >>> Evolutionarily conserved : See conserved sequence . Exogenous DNA : DNA origin ating outside an organ ism. Full article >>> In general, genes that are active have less bound histone , while ...

Eukaryotes

...e of the m RNA . Full article >>> intron In eukaryotes , bases of a gene trans cribed but later excised from the m RNA prior to exporting from the nucleus and subsequent translation of the message into a polypeptide . PICTURE ... Full article >>> The membrane i...

Domain

...al domain boundaries in the polypeptide , many intron insertion positions bear no relation to structural or functional domain s. Full article >>> 1999, chapter 16, used genetic programming to design an algorithm to identify trans membrane domain s of a protein . Full article >...

Consensus sequence

... sequence s are (the slash identifies the exon - intron or intron - exon junction): ... Full article >>> CONSENSUS SEQUENCE - A linear series of nu...

Coding sequence

...ing the protein - coding sequence s of a gene ; intron sequence s are trans cribed into RNA but are ...protein . Full article >>> any non- intron section of the coding sequence of a gene ; together, the exons constitute the m RNA and are ...

Alternative splicing

...A . RNA splicing is the normal process in which intron sequence s are removed from the pre-mRNA , producing the m RNA , which corresponds to the exons . Full article >>> In females, a positive autoregulatory feedback loop that functions through alternative splicing maintains the on s...

Actin

...as a template RNA splicing - process in which intron sequence s are excised from RNA molecule s in the nucleus during formation of messenger RNA ... Full article >>> actin g on many or all genes in all tissue s), or tissue -specific (i.e. present only in a particular cell t...