Transcription Blockage Leads to New Beginnings

Environmental agents are constantly challenging cells by damaging DNA, leading to the blockage of transcription elongation. How do cells deal with transcription-blockage and how is transcription restarted after the blocking lesions are removed? Here we review the processes responsible for the remova...

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Main Authors: Leonardo C. Andrade-Lima, Artur Veloso, Mats Ljungman
Format: Article
Language:English
Published: MDPI AG 2015-07-01
Series:Biomolecules
Subjects:
Online Access:http://www.mdpi.com/2218-273X/5/3/1600
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author Leonardo C. Andrade-Lima
Artur Veloso
Mats Ljungman
author_facet Leonardo C. Andrade-Lima
Artur Veloso
Mats Ljungman
author_sort Leonardo C. Andrade-Lima
collection DOAJ
description Environmental agents are constantly challenging cells by damaging DNA, leading to the blockage of transcription elongation. How do cells deal with transcription-blockage and how is transcription restarted after the blocking lesions are removed? Here we review the processes responsible for the removal of transcription-blocking lesions, as well as mechanisms of transcription restart. We also discuss recent data suggesting that blocked RNA polymerases may not resume transcription from the site of the lesion following its removal but, rather, are forced to start over from the beginning of genes.
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spelling doaj.art-d1ddb81ce0b641ee89dd9e337e0de21f2022-12-21T22:54:00ZengMDPI AGBiomolecules2218-273X2015-07-01531600161710.3390/biom5031600biom5031600Transcription Blockage Leads to New BeginningsLeonardo C. Andrade-Lima0Artur Veloso1Mats Ljungman2Department of Radiation Oncology and Translational Oncology Program, University of Michigan Medical School, Ann Arbor, MI 48109, USADepartment of Radiation Oncology and Translational Oncology Program, University of Michigan Medical School, Ann Arbor, MI 48109, USADepartment of Radiation Oncology and Translational Oncology Program, University of Michigan Medical School, Ann Arbor, MI 48109, USAEnvironmental agents are constantly challenging cells by damaging DNA, leading to the blockage of transcription elongation. How do cells deal with transcription-blockage and how is transcription restarted after the blocking lesions are removed? Here we review the processes responsible for the removal of transcription-blocking lesions, as well as mechanisms of transcription restart. We also discuss recent data suggesting that blocked RNA polymerases may not resume transcription from the site of the lesion following its removal but, rather, are forced to start over from the beginning of genes.http://www.mdpi.com/2218-273X/5/3/1600DNA damageDNA repairRNA polymerase IIrecovery of RNA synthesis
spellingShingle Leonardo C. Andrade-Lima
Artur Veloso
Mats Ljungman
Transcription Blockage Leads to New Beginnings
Biomolecules
DNA damage
DNA repair
RNA polymerase II
recovery of RNA synthesis
title Transcription Blockage Leads to New Beginnings
title_full Transcription Blockage Leads to New Beginnings
title_fullStr Transcription Blockage Leads to New Beginnings
title_full_unstemmed Transcription Blockage Leads to New Beginnings
title_short Transcription Blockage Leads to New Beginnings
title_sort transcription blockage leads to new beginnings
topic DNA damage
DNA repair
RNA polymerase II
recovery of RNA synthesis
url http://www.mdpi.com/2218-273X/5/3/1600
work_keys_str_mv AT leonardocandradelima transcriptionblockageleadstonewbeginnings
AT arturveloso transcriptionblockageleadstonewbeginnings
AT matsljungman transcriptionblockageleadstonewbeginnings