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Discontinuous mechanism of transcription elongation
During transcription elongation, three flexibly connected parts of RNA polymerase of Escherichia coli advance along the template so that the front-end domain is followed by the catalytic site which in turn is followed by the RNA product binding site. The advancing enzyme was found to maintain the sa...
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Published in: | Science (American Association for the Advancement of Science) 1994-08, Vol.265 (5173), p.793-796 |
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creator | NUDLER, E GOLDFARB, A KASHLEV, M |
description | During transcription elongation, three flexibly connected parts of RNA polymerase of Escherichia coli advance along the template so that the front-end domain is followed by the catalytic site which in turn is followed by the RNA product binding site. The advancing enzyme was found to maintain the same conformation throughout extended segments of the transcribed region. However, when the polymerase traveled across certain DNA sites that seemed to briefly anchor the front-end domain, cyclic shifting of the three parts, accompanied by buildup and relief of internal strain, was observed. Thus, elongation proceeded in alternating laps of monotonous and inchworm-like movement with the flexible RNA polymerase configuration being subject to direct sequence control. |
doi_str_mv | 10.1126/science.8047884 |
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The advancing enzyme was found to maintain the same conformation throughout extended segments of the transcribed region. However, when the polymerase traveled across certain DNA sites that seemed to briefly anchor the front-end domain, cyclic shifting of the three parts, accompanied by buildup and relief of internal strain, was observed. Thus, elongation proceeded in alternating laps of monotonous and inchworm-like movement with the flexible RNA polymerase configuration being subject to direct sequence control.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.8047884</identifier><identifier>PMID: 8047884</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Washington, DC: American Association for the Advancement of Science</publisher><subject>Bacteria ; Base Sequence ; Binding Sites ; Biological and medical sciences ; Deoxyribonucleic acid ; DNA ; DNA-Directed RNA Polymerases - metabolism ; Escherichia coli ; Escherichia coli Proteins ; Fundamental and applied biological sciences. Psychology ; Models, Genetic ; Molecular and cellular biology ; Molecular genetics ; Molecular Sequence Data ; Movement ; Peptide Elongation Factors - metabolism ; Principals ; Protein Conformation ; Ribonucleic acid ; RNA ; RNA, Messenger - metabolism ; RNA-Binding Proteins - metabolism ; Templates, Genetic ; Transcription Factors - metabolism ; Transcription, Genetic - physiology ; Transcription. Transcription factor. Splicing. Rna processing ; Transcriptional Elongation Factors ; Transcripts (Written Records)</subject><ispartof>Science (American Association for the Advancement of Science), 1994-08, Vol.265 (5173), p.793-796</ispartof><rights>1994 INIST-CNRS</rights><rights>Copyright American Association for the Advancement of Science Aug 5, 1994</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c475t-d27cfb30a3f474a0c6deaf488f86b1e5828423414f391e50a14ad344bd6f43c83</citedby><cites>FETCH-LOGICAL-c475t-d27cfb30a3f474a0c6deaf488f86b1e5828423414f391e50a14ad344bd6f43c83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/213548670/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$H</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/213548670?pq-origsite=primo$$EHTML$$P50$$Gproquest$$H</linktohtml><link.rule.ids>314,780,784,2884,2885,21378,21394,27924,27925,33611,33612,33877,33878,43733,43880,74093,74269</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4175982$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/8047884$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>NUDLER, E</creatorcontrib><creatorcontrib>GOLDFARB, A</creatorcontrib><creatorcontrib>KASHLEV, M</creatorcontrib><title>Discontinuous mechanism of transcription elongation</title><title>Science (American Association for the Advancement of Science)</title><addtitle>Science</addtitle><description>During transcription elongation, three flexibly connected parts of RNA polymerase of Escherichia coli advance along the template so that the front-end domain is followed by the catalytic site which in turn is followed by the RNA product binding site. The advancing enzyme was found to maintain the same conformation throughout extended segments of the transcribed region. However, when the polymerase traveled across certain DNA sites that seemed to briefly anchor the front-end domain, cyclic shifting of the three parts, accompanied by buildup and relief of internal strain, was observed. Thus, elongation proceeded in alternating laps of monotonous and inchworm-like movement with the flexible RNA polymerase configuration being subject to direct sequence control.</description><subject>Bacteria</subject><subject>Base Sequence</subject><subject>Binding Sites</subject><subject>Biological and medical sciences</subject><subject>Deoxyribonucleic acid</subject><subject>DNA</subject><subject>DNA-Directed RNA Polymerases - metabolism</subject><subject>Escherichia coli</subject><subject>Escherichia coli Proteins</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Models, Genetic</subject><subject>Molecular and cellular biology</subject><subject>Molecular genetics</subject><subject>Molecular Sequence Data</subject><subject>Movement</subject><subject>Peptide Elongation Factors - metabolism</subject><subject>Principals</subject><subject>Protein Conformation</subject><subject>Ribonucleic acid</subject><subject>RNA</subject><subject>RNA, Messenger - metabolism</subject><subject>RNA-Binding Proteins - metabolism</subject><subject>Templates, Genetic</subject><subject>Transcription Factors - metabolism</subject><subject>Transcription, Genetic - physiology</subject><subject>Transcription. Transcription factor. Splicing. 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The advancing enzyme was found to maintain the same conformation throughout extended segments of the transcribed region. However, when the polymerase traveled across certain DNA sites that seemed to briefly anchor the front-end domain, cyclic shifting of the three parts, accompanied by buildup and relief of internal strain, was observed. Thus, elongation proceeded in alternating laps of monotonous and inchworm-like movement with the flexible RNA polymerase configuration being subject to direct sequence control.</abstract><cop>Washington, DC</cop><pub>American Association for the Advancement of Science</pub><pmid>8047884</pmid><doi>10.1126/science.8047884</doi><tpages>4</tpages></addata></record> |
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subjects | Bacteria Base Sequence Binding Sites Biological and medical sciences Deoxyribonucleic acid DNA DNA-Directed RNA Polymerases - metabolism Escherichia coli Escherichia coli Proteins Fundamental and applied biological sciences. Psychology Models, Genetic Molecular and cellular biology Molecular genetics Molecular Sequence Data Movement Peptide Elongation Factors - metabolism Principals Protein Conformation Ribonucleic acid RNA RNA, Messenger - metabolism RNA-Binding Proteins - metabolism Templates, Genetic Transcription Factors - metabolism Transcription, Genetic - physiology Transcription. Transcription factor. Splicing. Rna processing Transcriptional Elongation Factors Transcripts (Written Records) |
title | Discontinuous mechanism of transcription elongation |
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