
Dictionary » E » Exon ExonDefinition noun, plural: exons (molecular biology) 1. The protein-coding region in the DNA. 2. The nucleic acid sequence in the DNA, or RNA transcript following genetic splicing.
Genes contain exons which are regions coding for proteins and which are interrupted by the unused sequences called introns. Exons have been found to include both sequences coding for amino acids and untranslated sequences. The introns are removed and the exons are joined together to form the final functional mRNA.
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Results from our forumRe: no repeat sequences in exons of genes?... the gene of interest.....remember its very unlikely to hit a piece of protein coding DNA, due to the fact that introns are way way way bigger than exons - 10-100x bigger at least in most cases i estimate. In fact there are pseudogenes in the human genome which are very strong evidence of this type ...
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Re:... this can be done from a cDNA clone quite accurately (not completely so), it is one of the most difficult problems in biology to predict what the exons used are without the cDNA sequence. In fact, this is one of the most powerful arguments to say there are an infinite number of genes, not 30,000, ...
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can protein size be predicted given genome info?... with a total genome size of 3 x 10 exp 6 base pairs. In this prokaryote, about 90% of the genome is actually protein-encoding (equivalent to our exons). Assume human to encode 30,000 proteins from a genome of a genome of 3 x 10 exp 9 base pairs. In human, about 1.5% of the genome is exon. From ...
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no repeat sequences in exons of genes?... insert a mRNA back into DNA and cause diseases but nowhere in my book did it mention what would happen if a repeat sequence would be put into an exon. My theory would be that if inserted into the exon the repeat sequence would cause a frameshift mutation and cause problems with the splicing and ...
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HELP!!!!!! PCRIf i want to carry out a PCR for gene TP53 and i have selected my exon but exon is small and my designed primer is outside (flanking) the exon (i.e.introns) woukd my primer locations be both side of the mutation can any one explain me my qustion and also ...
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