Abstract：
:It has been proposed that phage lambda site-specific recombination proceeds via two independent strand exchanges: the first exchange forming a Holliday-structure which is then converted into complete recombinant products by the second strand exchange. If this hypothesis is correct, one should be able to trap the putative Holliday intermediate by preventing the second strand exchange. In this paper, we show that substitution of phosphorothioate for phosphate in one strand of a recombination site is an effective way to block recombination while permitting the accumulation of a novel structure. This effect is seen only when phosphorothioate is positioned at a point of potential cleavage by Int recombinase, demonstrating that the inhibition of strand exchange is highly specific. Analysis of the novel structure that accumulates in these reactions proves that it contains a Holliday joint. Holliday-structures can also be detected in unblocked recombinations but are present at very low levels. The characteristics of Holliday-structure formation that we describe substantiate the proposed recombination pathway.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Kitts PA,Nash HAdoi
10.1093/nar/16.14.6839subject
Has Abstractpub_date
1988-07-25 00:00:00pages
6839-56issue
14Beissn
0305-1048issn
1362-4962journal_volume
16pub_type
杂志文章abstract：:RNA polymerase III recognizes and pauses at its terminator, an oligo(dT) tract in non-template DNA, terminates 3' oligo(rU) synthesis within this sequence, and releases the RNA. The pol III subunit Rpc11p (C11) mediates RNA 3'-5' cleavage in the catalytic center of pol III during pausing. The amino and carboxyl region...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkr182
更新日期：2011-08-01 00:00:00
abstract：:Small RNA (sRNA)-mediated gene silencing phenomena, exemplified by RNA interference (RNAi), require a unique class of proteins called Argonautes (AGOs). An AGO protein typically forms a protein-sRNA complex that contributes to gene silencing using the loaded sRNA as a specificity determinant. Here, we show that MoAGO2...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkx1301
更新日期：2018-03-16 00:00:00
abstract：:The history and mechanism of molecular evolution in DNA have been greatly elucidated by contributions from genetics, probability theory and bioinformatics--indeed, mathematical developments such as Kimura's neutral theory, Kingman's coalescent theory and efficient software such as BLAST, ClustalW, Phylip, etc., provid...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkp477
更新日期：2009-07-01 00:00:00
abstract：:Melting of DNA in a segment bounded at both ends by regions of greater stability during electrophoresis in denaturing gradient gels show complex properties, not accommodated with standard melting theory. Compact bands of some DNA molecules become anomalously broadened at the retardation level in a denaturing gradient,...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/23.14.2775
更新日期：1995-07-25 00:00:00
abstract：:Direct visualization of DNA and proteins allows researchers to investigate DNA-protein interactions with great detail. Much progress has been made in this area as a result of increasingly sensitive single-molecule fluorescence techniques. At the same time, methods that control the conformation of DNA molecules have be...
journal_title：Nucleic acids research
pub_type： 杂志文章,评审
doi：10.1093/nar/gkn412
更新日期：2008-08-01 00:00:00
abstract：:We report the use of MonoQ FPLC (Fast Protein Liquid Chromatography) for the rapid purification of a novel Type II restriction endonuclease PmaCI, from Pseudomonas maltophila, which recognises the sequence 5'-CAC decreases GTG-3'. The resulting enzyme is free of other nucleases to a level suitable for its characterisa...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/14.3.1293
更新日期：1986-02-11 00:00:00
abstract：:Scanning tunneling microscopy (STM) reveals nanometer scale details of hydrated DNA but the interpretation of the images is controversial because of substrate artifacts and the lack of a theory for image contrast. We demonstrate that we have overcome these problems by identifying five DNA samples by their STM images a...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/21.25.5896
更新日期：1993-12-25 00:00:00
abstract：:We have identified cDNAs encoding Mel-N1, the mouse homologue of a human nervous system-specific RNA-binding protein, Hel-N1. Two major mRNA transcripts of Mel-N1 were detected predominantly in the adult mouse brain by Northern blot analysis. To gain insight into the RNA binding specificity of Mel-N1, we performed ite...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/24.11.2011
更新日期：1996-06-01 00:00:00
abstract：:This work presents a neutral filter elution method for detecting DNA double strand breaks in mouse L1210 cells after X-ray. The assay will detect the number of double strand breaks induced by as little as 1000 rad of X-ray. The rate of DNA elution through the filters under neutral conditions increases with X-ray dose....
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/7.3.793
更新日期：1979-10-10 00:00:00
abstract：:Lateral ribosomal stalk is responsible for binding and recruiting translation factors during protein synthesis. The eukaryotic stalk consists of one P0 protein with two copies of P1•P2 heterodimers to form a P0(P1•P2)₂ pentameric P-complex. Here, we have solved the structure of full-length P1•P2 by nuclear magnetic re...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkt636
更新日期：2013-10-01 00:00:00
abstract：:The sequence requirements for specific and efficient transcription from the 16S/23S rRNA promoter of Sulfolobus shibatae were analysed by point mutations and by cassette mutations using an in vitro transcription system. The examination of the box A-containing distal promoter element (DPE) showed the great importance o...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/20.20.5423
更新日期：1992-10-25 00:00:00
abstract：:Biological evolution resulted in a homochiral world in which nucleic acids consist exclusively of d-nucleotides and proteins made by ribosomal translation of l-amino acids. From the perspective of synthetic biology, however, particularly anabolic enzymes that could build the mirror-image counterparts of biological mac...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkx079
更新日期：2017-04-20 00:00:00
abstract：:Several plasmids which direct the expression of human interferon-gamma (IFN-gamma) cDNA in the yeast Saccharomyces cerevisiae under the transcriptional control of the 3-phosphoglycerate kinase (PGK) promoter have been constructed. Up to 25 x 10(6) units per liter culture of biologically active IFN-gamma are synthesize...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/11.6.1819
更新日期：1983-03-25 00:00:00
abstract：:Fast viral adaptation and the implication of this rapid evolution in the emergence of several new infectious diseases have turned this issue into a major challenge for various research domains. Indeed, viruses are involved in the development of a wide range of pathologies and understanding how viruses and host cells i...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkq1013
更新日期：2011-01-01 00:00:00
abstract：:We have recently isolated a functional promoter encoding the human polypeptide-binding protein (BiP) gene from Burkitt's lymphoma cells by polymerase chain reaction (The EMBL Data Library accession number X59969, 1991). This promoter DNA segment (termed BiP670) was fused to the bacterial chloramphenicol acetyltransfer...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/20.24.6481
更新日期：1992-12-25 00:00:00
abstract：:DNA strand exchange, the central step of homologous recombination, is considered to occur approximately independently of DNA sequence content. However, certain prokaryotic and eukaryotic genomic loci display either an enhanced or reduced frequency of genetic exchange. Here we show that the Homo sapiens DNA strand exch...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkl355
更新日期：2006-05-24 00:00:00
abstract：:The Pk-rec gene, encoding a RecA/RAD51 homologue from the hyperthermophilic archaeon Pyrococcussp. KOD1, was expressed in Escherichia coli. The recombinant Pk-REC was purified to homogeneity and was shown to be in a dimeric form. A striking property of the purified recombinant Pk-REC was the unusual DNase activity on ...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/25.4.719
更新日期：1997-02-15 00:00:00
abstract：:Previously, we have shown that all class-1 polypeptide release factors (RFs) share a common glycine-glycine-glutamine (GGQ) motif, which is critical for RF activity. Here, we subjected to site-directed mutagenesis two invariant amino acids, Gln185 and Arg189, situated in the GGQ minidomain of human eRF1, followed by d...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/29.19.3982
更新日期：2001-10-01 00:00:00
abstract：:We describe a method for the formation of hybrid genes by in vivo recombination between two genes with partial sequence homology. DNA structures consisting of plasmid vector sequences, flanked by the alpha 2 interferon gene on the one side and a portion of the alpha 1 interferon gene (homology about 80%) on the other,...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/11.16.5661
更新日期：1983-08-25 00:00:00
abstract：:Proteins engage in highly selective interactions with their macromolecular partners. Sequence variants that alter protein binding affinity may cause significant perturbations or complete abolishment of function, potentially leading to diseases. There exists a persistent need to develop a mechanistic understanding of i...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkw374
更新日期：2016-07-08 00:00:00
abstract：:Structural Maintenance of Chromosomes (SMC) proteins are vital for a wide range of processes including chromosome structure and dynamics, gene regulation and DNA repair. Eukaryotes have three SMC complexes, consisting of heterodimeric pairs of six different SMC proteins along with several specific regulatory subunits....
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkq038
更新日期：2010-06-01 00:00:00
abstract：:The nematode Caenorhabditis elegans contains a small family of vitellogenin genes which is expressed abundantly, but only in the intestine of the adult hermaphrodite worm. In order to identify possible regulatory elements, we have sequenced the DNA surrounding the 5' ends of five of the six genes. Contained within reg...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/13.14.5283
更新日期：1985-07-25 00:00:00
abstract：:We present a simple and highly accurate computational method for operon prediction, based on intergenic distances and functional relationships between the protein products of contiguous genes, as defined by STRING database (Jensen,L.J., Kuhn,M., Stark,M., Chaffron,S., Creevey,C., Muller,J., Doerks,T., Julien,P., Roth,...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkq254
更新日期：2010-07-01 00:00:00
abstract：:An 11 S ribonucleoprotein particle was isolated from maize endosperm and shown to be functionally and structurally equivalent to the mammalian signal recognition particle. However, unlike animal cells which apparently contain a single 7 SL RNA species, maize endosperm contains a heterogeneous population of 7 SL RNA. T...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/17.4.1573
更新日期：1989-02-25 00:00:00
abstract：:Mitochondrial proteins remain the subject of intense research interest due to their implication in an increasing number of different conditions including mitochondrial and metabolic disease, cancer, and neuromuscular degenerative and age-related disorders. However, the mitochondrial proteome has yet to be accurately a...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkv1001
更新日期：2016-01-04 00:00:00
abstract：:These studies employed the synthetic linear DNA, poly dGdC, in the B and cobalt hexammine chloride (Co)-induced Z form to determine the effect of conformation on protein-DNA interactions. The rate of the reaction of the restriction endonucleases, Hha I and Cfo I, are reduced with Z DNA as compared to B DNA. The abilit...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/14.18.7237
更新日期：1986-09-25 00:00:00
abstract：:Methyl carbon-13 NMR spectra of purified tRNA species are presented for the first time. In addition, these spectra of tRNA species specific for phenylalanine, tyrosine, and cysteine exhibited the first resolution of single methyl carbon resonances. Carbon-13 enriched methyl groups of ribothymidine (T) and 7-methylguan...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/8.9.2085
更新日期：1980-05-10 00:00:00
abstract：:The European Nucleotide Archive (ENA; http://www.ebi.ac.uk/ena) is a repository for the submission, maintenance and presentation of nucleotide sequence data and related sample and experimental information. In this article we report on ENA in 2015 regarding general activity, notable published data sets and major achiev...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/gkv1311
更新日期：2016-01-04 00:00:00
abstract：:Genes in the germline (micronuclear) genome of hypotrichous ciliates are interrupted by multiple, short, non-coding, AT-rich sequences called internal eliminated segments, or IESs. During conversion of a micronucleus to a somatic nucleus (macronucleus) after cell mating, all IESs are excised from the germline genes an...
journal_title：Nucleic acids research
pub_type： 杂志文章,评审
doi：10.1093/nar/27.5.1243
更新日期：1999-03-01 00:00:00
abstract：:Antibodies to the deoxyribotrinucleotides dpApTpA and dpApApT were prepared by injecting the bovine serum albumin conjugates of the respective haptens in rabbits. The specificities of the antibodies were determined by estimating the inhibition of the binding of the tritiated haptens to the immunoglobulins by various n...
journal_title：Nucleic acids research
pub_type： 杂志文章
doi：10.1093/nar/4.9.3007
更新日期：1977-09-01 00:00:00
