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RNA Splicing Eukaryotic Post-transcriptional Gene Regulation Gene Expression without Bacterial Gene Regulation > Eukaryotic Post-transcriptional Gene Regulation Free to share, print, make copies and changes. Get yours at rect&utm_source=boundless

Introns are intervening sequences within a pre-mRNA molecule that do not code for proteins and are removed during RNA processing by a spliceosome. Exons are expressing sequences within a pre-mRNA molecule that are spliced together once introns are removed to form mature mRNA molecules that are translated into proteins. Alternative splicing allows for the production of various protein isoforms from one single gene coding. A spliceosome is a complex comprised of both RNA molecules and proteins which determine which introns to leave out and which exons to keep and bind together. RNA Splicing Free to share, print, make copies and changes. Get yours at expression-without-bacterial-gene-regulation-18/eukaryotic-post-transcriptional-gene-regulation-115/rna-splicing ?campaign_content=book_5887_section_115&campaign_term=Biology&utm_campaign=powerpoint&utm_medium=direct&utm_source=bou ndless Alternative Splicing View on Boundless.com Gene Expression without Bacterial Gene Regulation > Eukaryotic Post-transcriptional Gene Regulation

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Key terms exon a region of a transcribed gene present in the final functional RNA molecule intron a portion of a split gene that is included in pre-RNA transcripts but is removed during RNA processing and rapidly degraded spliceosome a dynamic complex of RNA and protein subunits that removes introns from precursor mRNA Free to share, print, make copies and changes. Get yours at Gene Expression without Bacterial Gene Regulation

Alternative Splicing There are five basic modes of alternative splicing. Free to share, print, make copies and changes. Get yours at Connexions. "Print." CC BY View on Boundless.comCC BY 3.0http://cnx.org/content/m44539/latest/Figure_15_04_02.jpgView on Boundless.com Gene Expression without Bacterial Gene Regulation

Mechanism of Splicing Alternative splicing can result in protein isoforms. Free to share, print, make copies and changes. Get yours at Wikimedia. "Splicing overview." CC BY-SA View on Boundless.comCC BY-SAhttp://commons.wikimedia.org/wiki/File:Splicing_overview.jpgView on Boundless.com Gene Expression without Bacterial Gene Regulation

Alternative Splicing Pre-mRNA can be alternatively spliced to create different proteins. Free to share, print, make copies and changes. Get yours at Connexions. "Basic CMYK." CC BY View on Boundless.comCC BY 3.0http://cnx.org/content/m44539/latest/Figure_16_05_03.jpgView on Boundless.com Gene Expression without Bacterial Gene Regulation

Free to share, print, make copies and changes. Get yours at Gene Expression without Bacterial Gene Regulation Which of the following best describes why humans have a similar gene number as do nematodes despite being a more complex organism? A) Nematodes have an excess of exons that are not used to produce proteins. B) Alternative splicing occurs in almost all human genes to produce multiple proteins. C) Splicing removes introns from the human genes to efficiently produce proteins. D) Splicing removes introns from the nematode genes to efficiently produce proteins.

Free to share, print, make copies and changes. Get yours at Boundless - LO. "Boundless." CC BY-SA BY-SA 3.0http:// Gene Expression without Bacterial Gene Regulation Which of the following best describes why humans have a similar gene number as do nematodes despite being a more complex organism? A) Nematodes have an excess of exons that are not used to produce proteins. B) Alternative splicing occurs in almost all human genes to produce multiple proteins. C) Splicing removes introns from the human genes to efficiently produce proteins. D) Splicing removes introns from the nematode genes to efficiently produce proteins.

Attribution Wikibooks. "Structural Biochemistry/Proteins/Signaling Control of Splicing Proteins." CC BY-SA BY-SA Connexions. "Eukaryotic Post-transcriptional Gene Regulation." CC BY BY Connexions. "Eukaryotic Post-transcriptional Gene Regulation." CC BY BY Wiktionary. "spliceosome." CC BY-SA BY-SA 3.0http://en.wiktionary.org/wiki/spliceosome Wikibooks. "Structural Biochemistry/Alternative Splicing." CC BY-SA BY-SA Wiktionary. "intron." CC BY-SA BY-SA 3.0http://en.wiktionary.org/wiki/intron Wiktionary. "exon." CC BY-SA BY-SA 3.0http://en.wiktionary.org/wiki/exon Free to share, print, make copies and changes. Get yours at Gene Expression without Bacterial Gene Regulation