Tunable protein synthesis by transcript isoforms in human cells

Eukaryotic genes generate multiple RNA transcript isoforms though alternative transcription, splicing, and polyadenylation. However, the relationship between human transcript diversity and protein production is complex as each isoform can be translated differently. We fractionated a polysome profile...

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Main Authors: Stephen N Floor, Jennifer A Doudna
Format: Article
Language:English
Published: eLife Sciences Publications Ltd 2016-01-01
Series:eLife
Subjects:
Online Access:https://elifesciences.org/articles/10921
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author Stephen N Floor
Jennifer A Doudna
author_facet Stephen N Floor
Jennifer A Doudna
author_sort Stephen N Floor
collection DOAJ
description Eukaryotic genes generate multiple RNA transcript isoforms though alternative transcription, splicing, and polyadenylation. However, the relationship between human transcript diversity and protein production is complex as each isoform can be translated differently. We fractionated a polysome profile and reconstructed transcript isoforms from each fraction, which we term Transcript Isoforms in Polysomes sequencing (TrIP-seq). Analysis of these data revealed regulatory features that control ribosome occupancy and translational output of each transcript isoform. We extracted a panel of 5′ and 3′ untranslated regions that control protein production from an unrelated gene in cells over a 100-fold range. Select 5′ untranslated regions exert robust translational control between cell lines, while 3′ untranslated regions can confer cell type-specific expression. These results expose the large dynamic range of transcript-isoform-specific translational control, identify isoform-specific sequences that control protein output in human cells, and demonstrate that transcript isoform diversity must be considered when relating RNA and protein levels.
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spelling doaj.art-8d6f034d626241e794e7f95d113e2a3a2022-12-22T04:29:20ZengeLife Sciences Publications LtdeLife2050-084X2016-01-01510.7554/eLife.10921Tunable protein synthesis by transcript isoforms in human cellsStephen N Floor0Jennifer A Doudna1Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, United StatesDepartment of Molecular and Cell Biology, University of California, Berkeley, Berkeley, United States; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, United States; Innovative Genomics Initiative, University of California, Berkeley, Berkeley, United States; Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, United States; Department of Chemistry, University of California, Berkeley, Berkeley, California, United StatesEukaryotic genes generate multiple RNA transcript isoforms though alternative transcription, splicing, and polyadenylation. However, the relationship between human transcript diversity and protein production is complex as each isoform can be translated differently. We fractionated a polysome profile and reconstructed transcript isoforms from each fraction, which we term Transcript Isoforms in Polysomes sequencing (TrIP-seq). Analysis of these data revealed regulatory features that control ribosome occupancy and translational output of each transcript isoform. We extracted a panel of 5′ and 3′ untranslated regions that control protein production from an unrelated gene in cells over a 100-fold range. Select 5′ untranslated regions exert robust translational control between cell lines, while 3′ untranslated regions can confer cell type-specific expression. These results expose the large dynamic range of transcript-isoform-specific translational control, identify isoform-specific sequences that control protein output in human cells, and demonstrate that transcript isoform diversity must be considered when relating RNA and protein levels.https://elifesciences.org/articles/10921transcript isoformstranslational controldeep sequencingengineered translationRNA processingRNA-seq
spellingShingle Stephen N Floor
Jennifer A Doudna
Tunable protein synthesis by transcript isoforms in human cells
eLife
transcript isoforms
translational control
deep sequencing
engineered translation
RNA processing
RNA-seq
title Tunable protein synthesis by transcript isoforms in human cells
title_full Tunable protein synthesis by transcript isoforms in human cells
title_fullStr Tunable protein synthesis by transcript isoforms in human cells
title_full_unstemmed Tunable protein synthesis by transcript isoforms in human cells
title_short Tunable protein synthesis by transcript isoforms in human cells
title_sort tunable protein synthesis by transcript isoforms in human cells
topic transcript isoforms
translational control
deep sequencing
engineered translation
RNA processing
RNA-seq
url https://elifesciences.org/articles/10921
work_keys_str_mv AT stephennfloor tunableproteinsynthesisbytranscriptisoformsinhumancells
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