Discovery and characterization of human exonic transcriptional regulatory elements

We sought exonic transcriptional regulatory elements by shotgun cloning human cDNA fragments into luciferase reporter vectors and measuring the resulting expression levels in liver cells. We uncovered seven regulatory elements within coding regions and three within 3' untranslated regions (UTRs...

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Veröffentlicht in:PloS one 2012-09, Vol.7 (9), p.e46098-e46098
Hauptverfasser: Khan, Arshad H, Lin, Andy, Smith, Desmond J
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description We sought exonic transcriptional regulatory elements by shotgun cloning human cDNA fragments into luciferase reporter vectors and measuring the resulting expression levels in liver cells. We uncovered seven regulatory elements within coding regions and three within 3' untranslated regions (UTRs). Two of the putative regulatory elements were enhancers and eight were silencers. The regulatory elements were generally but not consistently evolutionarily conserved and also showed a trend toward decreased population diversity. Furthermore, the exonic regulatory elements were enriched in known transcription factor binding sites (TFBSs) and were associated with several histone modifications and transcriptionally relevant chromatin. Evidence was obtained for bidirectional cis-regulation of a coding region element within a tubulin gene, TUBA1B, by the transcription factors PPARA and RORA. We estimate that hundreds of exonic transcriptional regulatory elements exist, an unexpected finding that highlights a surprising multi-functionality of sequences in the human genome.
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We estimate that hundreds of exonic transcriptional regulatory elements exist, an unexpected finding that highlights a surprising multi-functionality of sequences in the human genome.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>23029400</pmid><doi>10.1371/journal.pone.0046098</doi><oa>free_for_read</oa></addata></record>
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subjects 3' Untranslated Regions
Binding Sites
Biology
Cell Line
Chromatin
Chromatin - genetics
Chromatin - metabolism
Cloning
Cloning vectors
Deoxyribonuclease I - metabolism
Deoxyribonucleic acid
DNA
DNA, Complementary - genetics
Enhancers
Expression vectors
Gene expression
Gene sequencing
Genome, Human
Genomes
Genomics
Hepatocytes
Histones - genetics
Histones - metabolism
Humans
Liver
Pharmacology
Proteins
Regulatory Elements, Transcriptional
Regulatory sequences
RNA polymerase
Rodents
Silencers
Transcription factors
Transcription Factors - metabolism
Tubulin
Tubulin - genetics
title Discovery and characterization of human exonic transcriptional regulatory elements
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