Trends in cell & molecular biology最新文献

筛选
英文 中文
Structural Analysis of the Key Intermediate Formed during Transcription through a Nucleosome. 核小体转录过程中关键中间体的结构分析。
Trends in cell & molecular biology Pub Date : 2013-01-01
H-W Chang, A K Shaytan, F-K Hsieh, O I Kulaeva, M P Kirpichnikov, V M Studitsky
{"title":"Structural Analysis of the Key Intermediate Formed during Transcription through a Nucleosome.","authors":"H-W Chang,&nbsp;A K Shaytan,&nbsp;F-K Hsieh,&nbsp;O I Kulaeva,&nbsp;M P Kirpichnikov,&nbsp;V M Studitsky","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Transcription through chromatin by different RNA polymerases produces different biological outcomes and is accompanied by either nucleosome survival at the original location (Pol II-type mechanism) or backward nucleosome translocation along DNA (Pol III-type mechanism). It has been proposed that differences in the structure of the key intermediates formed during transcription dictate the fate of the nucleosomes. To evaluate this possibility, structure of the key intermediate formed during transcription by Pol III-type mechanism was studied by DNase I footprinting and molecular modeling. The Pol III-type mechanism is characterized by less efficient formation of the key intermediate required for nucleosome survival (Ø-loop, Pol II-type mechanism), most likely due to steric interference between the RNA polymerase and DNA in the Ø-loop. The data suggest that the lower efficiency of Ø-loop formation induces formation of a lower nucleosomal barrier and nucleosome translocation during transcription by Pol III-type mechanism.</p>","PeriodicalId":23241,"journal":{"name":"Trends in cell & molecular biology","volume":"8 ","pages":"13-23"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4214391/pdf/nihms548583.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32786545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Decoding in Candidatus Riesia pediculicola, close to a minimal tRNA modification set? 在马梗候选酵母中解码,接近最小tRNA修饰集?
Trends in cell & molecular biology Pub Date : 2012-01-01
Valérie de Crécy-Lagard, Christian Marck, Henri Grosjean
{"title":"Decoding in Candidatus Riesia pediculicola, close to a minimal tRNA modification set?","authors":"Valérie de Crécy-Lagard,&nbsp;Christian Marck,&nbsp;Henri Grosjean","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A comparative genomic analysis of the recently sequenced human body louse unicellular endosymbiont Candidatus Riesia pediculicola with a reduced genome (582 Kb), revealed that it is the only known organism that might have lost all post-transcriptional base and ribose modifications of the tRNA body, retaining only modifications of the anticodon-stem-loop essential for mRNA decoding. Such a minimal tRNA modification set was not observed in other insect symbionts or in parasitic unicellular bacteria, such as Mycoplasma genitalium (580 Kb), that have also evolved by considerably reducing their genomes. This could be an example of a minimal tRNA modification set required for life, a question that has been at the center of the field for many years, especially for understanding the emergence and evolution of the genetic code.</p>","PeriodicalId":23241,"journal":{"name":"Trends in cell & molecular biology","volume":"7 ","pages":"11-34"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3539174/pdf/nihms385606.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"31154870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信