Journal of Nucleic Acids最新文献_第4页

Corrigendum to "Plant MicroRNA Prediction by Supervised Machine Learning Using C5.0 Decision Trees". “使用C5.0决策树的监督机器学习预测植物MicroRNA”的勘误表。

IF 2.3

Journal of Nucleic Acids Pub Date : 2017-01-01 Epub Date: 2017-10-24 DOI: 10.1155/2017/7876832

Philip H Williams, Rodney P Eyles, Georg Weiller

引用次数: 1

Telomeric G-Quadruplexes: From Human to Tetrahymena Repeats. 端粒g -四叠体:从人类到四膜虫重复序列。

IF 2.3

Journal of Nucleic Acids Pub Date : 2017-01-01 Epub Date: 2017-12-28 DOI: 10.1155/2017/9170371

Erika Demkovičová, Ľuboš Bauer, Petra Krafčíková, Katarína Tlučková, Petra Tóthova, Andrea Halaganová, Eva Valušová, Viktor Víglaský

{"title":"Telomeric G-Quadruplexes: From Human to Tetrahymena Repeats.","authors":"Erika Demkovičová, Ľuboš Bauer, Petra Krafčíková, Katarína Tlučková, Petra Tóthova, Andrea Halaganová, Eva Valušová, Viktor Víglaský","doi":"10.1155/2017/9170371","DOIUrl":"https://doi.org/10.1155/2017/9170371","url":null,"abstract":"The human telomeric and protozoal telomeric sequences differ only in one purine base in their repeats; TTAGGG in telomeric sequences; and TTGGGG in protozoal sequences. In this study, the relationship between G-quadruplexes formed from these repeats and their derivatives is analyzed and compared. The human telomeric DNA sequence G3(T2AG3)3 and related sequences in which each adenine base has been systematically replaced by a guanine were investigated; the result is Tetrahymena repeats. The substitution does not affect the formation of G-quadruplexes but may cause differences in topology. The results also show that the stability of the substituted derivatives increased in sequences with greater number of substitutions. In addition, most of the sequences containing imperfections in repeats which were analyzed in this study also occur in human and Tetrahymena genomes. Generally, the presence of G-quadruplex structures in any organism is a source of limitations during the life cycle. Therefore, a fuller understanding of the influence of base substitution on the structural variability of G-quadruplexes would be of considerable scientific value.","PeriodicalId":16575,"journal":{"name":"Journal of Nucleic Acids","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2017/9170371","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35831976","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: 11

Putative HIV and SIV G-Quadruplex Sequences in Coding and Noncoding Regions Can Form G-Quadruplexes. 假设HIV和SIV在编码区和非编码区可以形成g -四重体序列。

IF 2.3

Journal of Nucleic Acids Pub Date : 2017-01-01 Epub Date: 2017-12-31 DOI: 10.1155/2017/6513720

Petra Krafčíková, Erika Demkovičová, Andrea Halaganová, Viktor Víglaský

{"title":"Putative HIV and SIV G-Quadruplex Sequences in Coding and Noncoding Regions Can Form G-Quadruplexes.","authors":"Petra Krafčíková, Erika Demkovičová, Andrea Halaganová, Viktor Víglaský","doi":"10.1155/2017/6513720","DOIUrl":"https://doi.org/10.1155/2017/6513720","url":null,"abstract":"The HIV virus is one of the most studied viruses in the world. This is especially true in terms of gene sequencing, and to date more than 9 thousand genomic sequences of HIV isolates have been sequenced and analyzed. In this study, a series of DNA sequences, which have the potential to form G-quadruplex structures, is analyzed. Several such sequences were found in various coding and noncoding virus domains, including the U3 LTR, tat, rev, env, and vpx regions. Interestingly, a homological sequence to the already well-known HIV integrase aptamer was identified in the minus-strand. The sequences derived from original isolates were analyzed using standard spectral and electrophoretic methods. In addition, a recently developed methodology is applied which uses induced circular dichroism spectral profiles of G-quadruplex-ligand (Thiazole Orange) complexes to determine if G-rich sequences can adopt G-quadruplex structure. Targeting the G-quadruplexes or peptide domains corresponding to the G-rich coding sequence in HIV offers researchers attractive therapeutic targets which would be of particular use in the development of novel antiviral therapies. The analysis of G-rich regions can provide researchers with a path to find specific targets which could be of interest for specific types of virus.","PeriodicalId":16575,"journal":{"name":"Journal of Nucleic Acids","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2017/6513720","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35847953","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: 5

Role of Eukaryotic Initiation Factors during Cellular Stress and Cancer Progression 真核起始因子在细胞应激和癌症进展中的作用

IF 2.3

Journal of Nucleic Acids Pub Date : 2016-12-19 DOI: 10.1155/2016/8235121

Devender Kumar Sharma, Kamiko R. Bressler, H. Patel, Nirujah Balasingam, N. Thakor

{"title":"Role of Eukaryotic Initiation Factors during Cellular Stress and Cancer Progression","authors":"Devender Kumar Sharma, Kamiko R. Bressler, H. Patel, Nirujah Balasingam, N. Thakor","doi":"10.1155/2016/8235121","DOIUrl":"https://doi.org/10.1155/2016/8235121","url":null,"abstract":"Protein synthesis can be segmented into distinct phases comprising mRNA translation initiation, elongation, and termination. Translation initiation is a highly regulated and rate-limiting step of protein synthesis that requires more than 12 eukaryotic initiation factors (eIFs). Extensive evidence shows that the transcriptome and corresponding proteome do not invariably correlate with each other in a variety of contexts. In particular, translation of mRNAs specific to angiogenesis, tumor development, and apoptosis is altered during physiological and pathophysiological stress conditions. In cancer cells, the expression and functions of eIFs are hampered, resulting in the inhibition of global translation and enhancement of translation of subsets of mRNAs by alternative mechanisms. A precise understanding of mechanisms involving eukaryotic initiation factors leading to differential protein expression can help us to design better strategies to diagnose and treat cancer. The high spatial and temporal resolution of translation control can have an immediate effect on the microenvironment of the cell in comparison with changes in transcription. The dysregulation of mRNA translation mechanisms is increasingly being exploited as a target to treat cancer. In this review, we will focus on this context by describing both canonical and noncanonical roles of eIFs, which alter mRNA translation.","PeriodicalId":16575,"journal":{"name":"Journal of Nucleic Acids","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2016/8235121","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64555931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 58

Microarrays as Model Biosensor Platforms to Investigate the Structure and Affinity of Aptamers 微阵列作为模型生物传感器平台研究适体的结构和亲和力

IF 2.3

Journal of Nucleic Acids Pub Date : 2016-03-03 DOI: 10.1155/2016/9718612

Jennifer A. Martin, Y. Chushak, J. Chávez, J. Hagen, N. Kelley-Loughnane

{"title":"Microarrays as Model Biosensor Platforms to Investigate the Structure and Affinity of Aptamers","authors":"Jennifer A. Martin, Y. Chushak, J. Chávez, J. Hagen, N. Kelley-Loughnane","doi":"10.1155/2016/9718612","DOIUrl":"https://doi.org/10.1155/2016/9718612","url":null,"abstract":"Immobilization of nucleic acid aptamer recognition elements selected free in solution onto the surface of biosensor platforms has proven challenging. This study investigated the binding of multiple aptamer/target pairs immobilized on a commercially available microarray as a model system mimicking biosensor applications. The results indicate a minimum distance (linker length) from the surface and thymine nucleobase linker provides reproducible binding across varying conditions. An indirect labeling method, where the target was labeled with a biotin followed by a brief Cy3-streptavidin incubation, provided a higher signal-to-noise ratio and over two orders of magnitude improvement in limit of detection, compared to direct Cy3-protein labeling. We also showed that the affinities of the aptamer/target interaction can change between direct and indirect labeling and conditions to optimize for the highest fluorescence intensity will increase the sensitivity of the assay but will not change the overall affinity. Additionally, some sequences which did not initially bind demonstrated binding when conditions were optimized. These results, in combination with studies demonstrating enhanced binding in nonselection buffers, provided insights into the structure and affinity of aptamers critical for biosensor applications and allowed for generalizations in starting conditions for researchers wishing to investigate aptamers on a microarray surface.","PeriodicalId":16575,"journal":{"name":"Journal of Nucleic Acids","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2016/9718612","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64634716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Copy Number Variation of UGT 2B Genes in Indian Families Using Whole Genome Scans. 利用全基因组扫描研究印度家庭UGT 2B基因拷贝数变异

IF 2.3

Journal of Nucleic Acids Pub Date : 2016-01-01 Epub Date: 2016-03-22 DOI: 10.1155/2016/1648527

Avinash M Veerappa, Prakash Padakannaya, Nallur B Ramachandra

{"title":"Copy Number Variation of UGT 2B Genes in Indian Families Using Whole Genome Scans.","authors":"Avinash M Veerappa, Prakash Padakannaya, Nallur B Ramachandra","doi":"10.1155/2016/1648527","DOIUrl":"https://doi.org/10.1155/2016/1648527","url":null,"abstract":"Background and Objectives. Uridine diphospho-glucuronosyltransferase 2B (UGT2B) is a family of genes involved in metabolizing steroid hormones and several other xenobiotics. These UGT2B genes are highly polymorphic in nature and have distinct polymorphisms associated with specific regions around the globe. Copy number variations (CNVs) status of UGT2B17 in Indian population is not known and their disease associations have been inconclusive. It was therefore of interest to investigate the CNV profile of UGT2B genes. Methods. We investigated the presence of CNVs in UGT2B genes in 31 members from eight Indian families using Affymetrix Genome-Wide Human SNP Array 6.0 chip. Results. Our data revealed >50% of the study members carried CNVs in UGT2B genes, of which 76% showed deletion polymorphism. CNVs were observed more in UGT2B17 (76.4%) than in UGT2B15 (17.6%). Molecular network and pathway analysis found enrichment related to steroid metabolic process, carboxylesterase activity, and sequence specific DNA binding. Interpretation and Conclusion. We report the presence of UGT2B gene deletion and duplication polymorphisms in Indian families. Network analysis indicates the substitutive role of other possible genes in the UGT activity. The CNVs of UGT2B genes are very common in individuals indicating that the effect is neutral in causing any suspected diseases. ","PeriodicalId":16575,"journal":{"name":"Journal of Nucleic Acids","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2016/1648527","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34473343","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: 1

miRNA Influences in NRF2 Pathway Interactions within Cancer Models. miRNA影响NRF2通路在癌症模型中的相互作用。

IF 2.3

Journal of Nucleic Acids Pub Date : 2015-01-01 Epub Date: 2015-08-09 DOI: 10.1155/2015/143636

Duncan Ayers, Byron Baron, Therese Hunter

引用次数: 50

Insects' RNA Profiling Reveals Absence of "Hidden Break" in 28S Ribosomal RNA Molecule of Onion Thrips, Thrips tabaci. 昆虫RNA谱分析揭示洋葱蓟马、烟叶蓟马28S核糖体RNA分子不存在“隐性断裂”。

IF 2.3

Journal of Nucleic Acids Pub Date : 2015-01-01 Epub Date: 2015-02-12 DOI: 10.1155/2015/965294

Rosaline Wanjiru Macharia, Fidelis Levi Ombura, Erick Onyango Aroko

{"title":"Insects' RNA Profiling Reveals Absence of \"Hidden Break\" in 28S Ribosomal RNA Molecule of Onion Thrips, Thrips tabaci.","authors":"Rosaline Wanjiru Macharia, Fidelis Levi Ombura, Erick Onyango Aroko","doi":"10.1155/2015/965294","DOIUrl":"https://doi.org/10.1155/2015/965294","url":null,"abstract":"With an exception of aphids, insects' 28S rRNA is thought to harbor a \"hidden break\" which cleaves under denaturing conditions to comigrate with 18S rRNA band to exhibit a degraded appearance on native agarose gels. The degraded appearance confounds determination of RNA integrity in laboratories that rely on gel electrophoresis. To provide guidelines for RNA profiles, RNA from five major insect orders, namely, Diptera, Hemiptera, Thysanoptera, Hymenoptera, and Lepidoptera, was compared under denaturing and nondenaturing conditions. This study confirmed that although present in most of insect's RNA, the \"hidden break\" is absent in the 28S rRNA of onion thrips, Thrips tabaci. On the other hand, presence of \"hidden break\" was depicted in whiteflies' 28S rRNA despite their evolutionary grouping under same order with aphids. Divergence of 28S rRNA sequences confirms variation of both size and composition of gap region among insect species. However, phylogeny reconstruction does not support speciation as a possible source of the hidden break in insect's 28S rRNA. In conclusion, we show that RNA from a given insect order does not conform to a particular banding profile and therefore this approach cannot be reliably used to characterize newly discovered species. ","PeriodicalId":16575,"journal":{"name":"Journal of Nucleic Acids","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2015/965294","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33008563","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: 17

In Vitro Selection of a Single-Stranded DNA Molecular Recognition Element against Clostridium difficile Toxin B and Sensitive Detection in Human Fecal Matter. 抗艰难梭菌毒素B单链DNA分子识别元件的体外筛选及在人粪便中的敏感检测。

IF 2.3

Journal of Nucleic Acids Pub Date : 2015-01-01 Epub Date: 2015-02-05 DOI: 10.1155/2015/808495

Ka Lok Hong, Eamonn Maher, Ryan M Williams, Letha J Sooter

引用次数: 6

The Globular State of the Single-Stranded RNA: Effect of the Secondary Structure Rearrangements. 单链 RNA 的球状状态：二级结构重排的影响。

IF 2.3

Journal of Nucleic Acids Pub Date : 2015-01-01 Epub Date: 2015-08-09 DOI: 10.1155/2015/295264

Zareh A Grigoryan, Armen T Karapetian

引用次数: 0