Abstract:
:Ribosomal RNA (rRNA) in intact ribosomes is cleaved into discrete products on incubation of reticulocyte lysates or L-cell extracts with ppp(A2'p)3A. Cleavage of rRNA may, therefore, provide a useful assay for 2-5A (ppp)A2'p)nA; n = 2 to 4) or for the presence of a 2-5A-dependent nuclease. The results with reticulocyte lysates differed from those obtained in the L-cell-free system in that (a) a different RNA cleavage pattern was produced (with added L-cell ribosomes) and (b) cleavage was fully activated by the analogue ppp(A2'p)3A3'pCp. As might be expected from the relatively high levels of 2-5A present in interferon-treated, encephalomyocarditis virus (EMC)-infected L-cells, rRNA extracted from these cells was also cleaved. The cleavage pattern observed overlapped with that obtained on incubation of an L-cell-free system with 2-5A. Thus, not only is 2-5A present, but the 2-5A-dependent nuclease also appears to be active, in interferon-treated, EMC-infected L-cells.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Wreschner DH,James TC,Silverman RH,Kerr IMdoi
10.1093/nar/9.7.1571subject
Has Abstractpub_date
1981-04-10 00:00:00pages
1571-81issue
7eissn
0305-1048issn
1362-4962journal_volume
9pub_type
杂志文章abstract::The lesion bypass pathway, which is regulated by monoubiquitination of proliferating cell nuclear antigen (PCNA), is essential for resolving replication stalling due to DNA lesions. This process is important for preventing genomic instability and cancer development. Previously, it was shown that cells deficient in tum...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkq1337
更新日期:2011-05-01 00:00:00
abstract::Tunable induction of gene expression is an essential tool in biology and biotechnology. In spite of that, current induction systems often exhibit unpredictable behavior and performance shortcomings, including high sensitivity to transactivator dosage and plasmid take-up variation, and excessive consumption of cellular...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gky795
更新日期:2018-10-12 00:00:00
abstract::Initial steps in the synthesis of functional tRNAs require 5'- and 3'-processing of precursor tRNAs (pre-tRNAs), which in yeast mitochondria are achieved by two endonucleases, RNase P and RNase Z. In this study, using a combination of detergent-free Blue Native Gel Electrophoresis, proteomics and in vitro testing of p...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkr941
更新日期:2012-02-01 00:00:00
abstract::The mouse is widely used as system to study human genetic mechanisms. However, extensive rewiring of transcriptional regulatory networks often confounds translation of findings between human and mouse. Site-specific gain and loss of individual transcription factor binding sites (TFBS) has caused functional divergence ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gky018
更新日期:2018-02-28 00:00:00
abstract::RNA synthesis and DNA replication cease after DNA damage. We studied RNA synthesis using an in situ run-on assay and found ribosomal RNA (rRNA) synthesis was inhibited 24 h after UV light, gamma radiation or DNA cross-linking by cisplatin in human cells. Cisplatin led to accumulation of cells in S phase. Inhibition of...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkt502
更新日期:2013-08-01 00:00:00
abstract::MicroRNAs (miRNAs) are small noncoding RNAs that act as master regulators in many biological processes. miRNAs function mainly by downregulating the expression of their gene targets. Thus, accurate prediction of miRNA targets is critical for characterization of miRNA functions. To this end, we have developed an online...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkz757
更新日期:2020-01-08 00:00:00
abstract::I-motif DNAs have been widely employed as robust modulating components to construct reconfigurable DNA nanodevices that function well in acidic cellular environments. However, they generally display poor interactivity with fluorescent ligands under these complex conditions, illustrating a major difficulty in utilizing...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkaa020
更新日期:2020-02-28 00:00:00
abstract::Zar1 was one of the earliest mammalian maternal-effect genes to be identified. Embryos derived from Zar1-null female mice are blocked before zygotic genome activation; however, the underlying mechanism remains unclear. By knocking out Zar1 and its homolog Zar2 in mice, we revealed a novel function of these genes in oo...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkz863
更新日期:2019-12-02 00:00:00
abstract::The structure and organisation of the human N-ras gene has been determined by analysing cDNA clones derived from the two main mRNA transcripts. One clone in particular is 4.1 Kb long and originates from the larger (4.3 Kb) message. Sequence analysis of this clone has revealed that the N-ras gene consists of seven exon...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/13.14.5255
更新日期:1985-07-25 00:00:00
abstract::Some human cancers maintain their telomeres using the alternative lengthening of telomeres (ALT) mechanism; a process thought to involve recombination. Different types of recombinational telomere elongation pathways have been identified in yeasts. In senescing yeast telomerase deletion (ter1-Delta) mutants with very s...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkp814
更新日期:2010-01-01 00:00:00
abstract::Heat shock genes are activated by the binding of the heat shock transcription factor (HSF) to heat shock elements (HSEs), consisting of arrays of the 5-bp unit NGAAN arranged as inverted repeats. Here, we have investigated the interaction of the 5-bp unit with HSFs of Drosophila and Saccharomyces. Mutations within the...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/22.2.167
更新日期:1994-01-25 00:00:00
abstract::Successful use and reliability of microarray technology is highly dependent on several factors, including surface chemistry parameters and accessibility of cDNA targets to the DNA probes fixed onto the surface. Here, we show that functionalisation of glass slides with homemade dendrimers allow production of more sensi...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gng088
更新日期:2003-08-15 00:00:00
abstract::DNA assembly forms the cornerstone of modern synthetic biology. Despite the numerous available methods, scarless multi-fragment assembly of large plasmids remains challenging. Furthermore, the upcoming wave in molecular biological automation demands a rethinking of how we perform DNA assembly. To streamline automation...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkx132
更新日期:2017-06-20 00:00:00
abstract::An unexpectedly high number of regulatory RNAs have been recently discovered that fine-tune the function of genes at all levels of expression. We employed Genomic SELEX, a method to identify protein-binding RNAs encoded in the genome, to search for further regulatory RNAs in Escherichia coli. We used the global regula...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkq032
更新日期:2010-06-01 00:00:00
abstract::Protein structures are an ensemble of atoms determined experimentally mostly by X-ray crystallography or Nuclear Magnetic Resonance. Studying 3D protein structures is a key point for better understanding protein function at a molecular level. We propose a set of accurate tools, for analysing protein structures, based ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkt509
更新日期:2013-07-01 00:00:00
abstract::We have generated transgenic mice that express a diverse repertoire of human sequence immunoglobulins. The expression of this repertoire is directed by light and heavy chain minilocus transgenes comprised of human protein coding sequences in an unrearranged, germ-line configuration. In this paper we describe the const...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/20.23.6287
更新日期:1992-12-11 00:00:00
abstract::A computer program has been developed which aids in the determination of restriction enzyme recognition sequences. This is achieved by cleaving DNAs of known sequence with a restriction endonuclease and comparing the fragmentation pattern with a computer-generated set of patterns. The feasibility of this approach has ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/5.11.4105
更新日期:1978-11-01 00:00:00
abstract::Long non-coding RNAs (lncRNAs) that have no protein-coding capacity make up a large proportion of the transcriptome of various species. Many lncRNAs are expressed within the animal central nervous system in spatial- and temporal-specific patterns, indicating that lncRNAs play important roles in cellular processes, neu...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gks943
更新日期:2012-12-01 00:00:00
abstract::Recent data showed that p53 stimulates the expression of genes encoding not only pro- but also antioxidant enzymes. It was suggested that antioxidant genes could be induced under physiologic levels of stress while the prooxidant ones respond to higher level of stress. Results presented in this article illustrate an ad...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkm824
更新日期:2007-01-01 00:00:00
abstract::PDB-REPRDB is a database of representative protein chains from the Protein Data Bank (PDB). Started at the Real World Computing Partnership (RWCP) in August 1997, it developed to the present system of PDB-REPRDB. In April 2001, the system was moved to the Computational Biology Research Center (CBRC), National Institut...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkg022
更新日期:2003-01-01 00:00:00
abstract::According to recent models, as yet poorly studied architectural proteins appear to be required for local regulation of enhancer-promoter interactions, as well as for global chromosome organization. Transcription factors ZIPIC, Pita and Zw5 belong to the class of chromatin insulator proteins and preferentially bind to ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkw371
更新日期:2016-09-06 00:00:00
abstract::The satellite RNA of tobacco ringspot virus (STobRV RNA) replicates and becomes encapsidated in association with tobacco ringspot virus. Previous results show that the infected tissue produces multimeric STobRV RNAs of both polarities. RNA that is complementary to encapsidated STobRV RNA, designated as having the (-) ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/14.24.9729
更新日期:1986-12-22 00:00:00
abstract::DNA double-strand breaks (DSBs) are repaired by either the non-homologous end joining (NHEJ) or homologous recombination (HR) pathway. Pathway choice is determined by the generation of 3΄ single-strand DNA overhangs at the break that are initiated by the action of the Mre11-Rad50-Xrs2 (MRX) complex to direct repair to...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkx221
更新日期:2017-06-02 00:00:00
abstract::PomBase (http://www.pombase.org) is the model organism database for the fission yeast Schizosaccharomyces pombe. PomBase provides a central hub for the fission yeast community, supporting both exploratory and hypothesis-driven research. It provides users easy access to data ranging from the sequence level, to molecula...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gku1040
更新日期:2015-01-01 00:00:00
abstract::Unmodified tRNA molecules are useful for many purposes in cell-free protein biosynthesis, but there is little information about how the lack of tRNA post-transcriptional modifications affects the coding specificity for synonymous codons. In the present study, we prepared an unmodified form of Escherichia coli tRNA1Ser...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/24.15.2894
更新日期:1996-08-01 00:00:00
abstract::The Intronerator (http://www.cse.ucsc.edu/ approximately kent/intronerator/ ) is a set of web-based tools for exploring RNA splicing and gene structure in Caenorhabditis elegans. It includes a display of cDNA alignments with the genomic sequence, a catalog of alternatively spliced genes and a database of introns. The ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/28.1.91
更新日期:2000-01-01 00:00:00
abstract::Phylogenetic analysis of Y-family DNA polymerases suggests that it can be subdivided into several discrete branches consisting of UmuC/DinB/Rev1/Rad30/Rad30A and Rad30B. The most diverse is the DinB family that is found in all three kingdoms of life. Searches of the complete genome of the crenarchaeon Sulfolobus solfa...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/29.22.4607
更新日期:2001-11-15 00:00:00
abstract::Synthetic oligonucleotides were used to introduce mutations into the lacPUV5 promoter. Four mutations were obtained at positions -13, -14, and -15, with respect to the transcriptional start site. The effects of these mutations were measured in vivo and the results are discussed with respect to the consensus sequence a...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/12.9.4011
更新日期:1984-05-11 00:00:00
abstract::Small interfering RNAs (siRNAs) are now established as the preferred tool to inhibit gene function in mammalian cells yet trigger unintended gene silencing due to their inherent miRNA-like behavior. Such off-target effects are primarily mediated by the sequence-specific interaction between the siRNA seed regions (posi...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkq341
更新日期:2010-09-01 00:00:00
abstract::Thermal elution poly(U)-Sepharose chromatography was utilized to fractionate yeast mRNA based on poly(A) size. Analysis of the in vitro translation products of the fractionated RNAs in a wheat-embryo cell-free protein synthesis system shows a heterogeneous but equal distribution of these abundant translatable mRNAs in...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/8.17.3841
更新日期:1980-09-11 00:00:00