The Pfam protein families database in 2019.

abstract：:Digital PCR provides high sensitivity and unprecedented accuracy in DNA quantification, but current approaches require dedicated instrumentation and have limited opportunities for multiplexing. Here, we present an isothermal platform for digital enumeration of DNA reaction products in multiplex via standard fluorescen...

journal_title：Nucleic acids research

authors： Björkesten J,Patil S,Fredolini C,Lönn P,Landegren U

更新日期：2020-07-27 00:00:00

abstract：:An improved method was developed for microdissection and cloning of metaphase as well as pachytene chromosomes. The protocol incorporates efficient ligation of chromosomal DNA with linker adaptors, abolishment of microcloning steps and the reduction of micromanipulation. The threshold for amplifying genomic DNA templa...

journal_title：Nucleic acids research

authors： Ponelies N,Stein N,Weber G

更新日期：1997-09-01 00:00:00

abstract：:We describe the structure (3840 bp) of a novel Euglena gracilis chloroplast ribosomal protein operon that encodes the five genes rpl16-rpl14-rpl5-rps8-rpl36. The gene organization resembles the spc and the 3'-end of the S10 ribosomal protein operons of E. coli. The rpl5 is a new chloroplast gene not previously reporte...

journal_title：Nucleic acids research

authors： Christopher DA,Hallick RB

更新日期：1989-10-11 00:00:00

abstract：:Most small nucleolar RNAs (snoRNAs) guide rRNA nucleotide modifications, some participate in pre-rRNA cleavages, and a few have both functions. These activities involve direct base-pairing of the snoRNA with pre-rRNA using different domains. It is not known if the modification and processing functions occur independen...

journal_title：Nucleic acids research

authors： Liang XH,Liu Q,Liu Q,King TH,Fournier MJ

更新日期：2010-06-01 00:00:00

abstract：:NELF and DSIF act together to inhibit transcription elongation in vitro, and are implicated in causing promoter proximal pausing on the hsp70 gene in Drosophila. Here, further characterization of Drosophila NELF is provided. Drosophila NELF has four subunits similar to subunits of human NELF. The amino acid sequences ...

journal_title：Nucleic acids research

authors： Wu CH,Lee C,Fan R,Smith MJ,Yamaguchi Y,Handa H,Gilmour DS

更新日期：2005-03-01 00:00:00

abstract：:During the formation of a transcriptionally active macronucleus, ciliated protozoa excise large numbers of interstitial segments of DNA (internal eliminated sequences; IESs) from their chromosomes. In this study we analyze the published sequences of 20 IESs that interrupt surface protein genes of Paramecium and identi...

journal_title：Nucleic acids research

authors： Klobutcher LA,Herrick G

更新日期：1995-06-11 00:00:00

abstract：:Translational repression (TR) plays an important role in post-transcriptional regulation of gene expression and embryonic development in metazoans. TR also regulates the expression of a subset of the cytoplasmic mRNA population during development of fertilized female gametes of the unicellular malaria parasite, Plasmo...

journal_title：Nucleic acids research

authors： Braks JA,Mair GR,Franke-Fayard B,Janse CJ,Waters AP

更新日期：2008-03-01 00:00:00

abstract：:This report documents the error rate in a commercially distributed subset of the IMAGE Consortium mouse cDNA clone collection. After isolation of plasmid DNA from 1189 bacterial stock cultures, only 62. 2% were uncontaminated and contained cDNA inserts that had significant sequence identity to published data for the o...

journal_title：Nucleic acids research

authors： Halgren RG,Fielden MR,Fong CJ,Zacharewski TR

更新日期：2001-01-15 00:00:00

abstract：:In Saccharomyces cerevisiae, the stability of highly repetitive rDNA array is maintained through transcriptional silencing. Recently, a β-1,3-glucanosyltransferase Gas1 has been shown to play a significant role in the regulation of transcriptional silencing in S. cerevisiae. Here, we show that the gas1Δ mutation incre...

journal_title：Nucleic acids research

authors： Ha CW,Kim K,Chang YJ,Kim B,Huh WK

更新日期：2014-07-01 00:00:00

abstract：:The pattern of preferential DNA repair of UV-induced pyrimidine dimers was studied in repair-deficient Chinese hamster ovary (CHO) cells transfected with the human excision repair gene, ERCC-1. Repair efficiency was measured in the active dihydrofolate reductase (DHFR) gene and in its flanking, non-transcribed sequenc...

journal_title：Nucleic acids research

authors： Bohr VA,Chu EH,van Duin M,Hanawalt PC,Okumoto DS

更新日期：1988-08-11 00:00:00

abstract：:Copy number variants (CNVs) are currently defined as genomic sequences that are polymorphic in copy number and range in length from 1000 to several million base pairs. Among current array-based CNV detection platforms, long-oligonucleotide arrays promise the highest resolution. However, the performance of currently av...

journal_title：Nucleic acids research

authors： Cahan P,Godfrey LE,Eis PS,Richmond TA,Selzer RR,Brent M,McLeod HL,Ley TJ,Graubert TA

更新日期：2008-04-01 00:00:00

abstract：:Insertion of DNA containing PR, the early rightward promoter of bacteriophage lambda, is lethal to M13-derived vectors when the promoter directs transcription (using the '+' strand as template) toward the M13 origin of replication (ori). Lethality can be relieved by mutation of PR, repression of the promoter by the la...

journal_title：Nucleic acids research

authors： Brown S,Ferm J,Woody S,Gussin G

更新日期：1990-10-25 00:00:00

abstract：:The nucleoplasm is not homogenous; it consists of many types of nuclear bodies, also known as nuclear domains or nuclear subcompartments. These self-organizing structures gather machinery involved in various nuclear activities. Nuclear speckles (NSs) or splicing speckles, also called interchromatin granule clusters, w...

journal_title：Nucleic acids research

authors： Galganski L,Urbanek MO,Krzyzosiak WJ

更新日期：2017-10-13 00:00:00

abstract：:The distribution and amount of 5-methylcytosine (5-MeCyt) in DNA was measured for early embryos of mouse strain CF1 (2 to 4 cell stage to blastocyst) and mouse teratocarcinoma cells. In each case, the pattern of methylation was examined by use of the restriction enzymes Hha I and HPA II HPA II, which cut DNA at the si...

journal_title：Nucleic acids research

authors： Singer J,Roberts-Ems J,Luthardt FW,Riggs AD

更新日期：1979-12-20 00:00:00

abstract：:Mitochondrial DNA maintenance and segregation are dependent on the actin cytoskeleton in budding yeast. We found two cytoskeletal proteins among six proteins tightly associated with rat liver mitochondrial DNA: non-muscle myosin heavy chain IIA and β-actin. In human cells, transient gene silencing of MYH9 (encoding no...

journal_title：Nucleic acids research

authors： Reyes A,He J,Mao CC,Bailey LJ,Di Re M,Sembongi H,Kazak L,Dzionek K,Holmes JB,Cluett TJ,Harbour ME,Fearnley IM,Crouch RJ,Conti MA,Adelstein RS,Walker JE,Holt IJ

更新日期：2011-07-01 00:00:00

abstract：:DNA3'pp5'G caps synthesized by the 3'-PO4/5'-OH ligase RtcB have a strong impact on enzymatic reactions at DNA 3'-OH ends. Aprataxin, an enzyme that repairs A5'pp5'DNA ends formed during abortive ligation by classic 3'-OH/5'-PO4 ligases, is also a DNA 3' de-capping enzyme, converting DNAppG to DNA3'p and GMP. By takin...

journal_title：Nucleic acids research

authors： Chauleau M,Jacewicz A,Shuman S

更新日期：2015-07-13 00:00:00

abstract：:We present web servers for analysis of non-coding RNA sequences on the basis of their secondary structures. Software tools for structural multiple sequence alignments, structural pairwise sequence alignments and structural motif findings are available from the integrated web server and the individual stand-alone web s...

journal_title：Nucleic acids research

authors： Asai K,Kiryu H,Hamada M,Tabei Y,Sato K,Matsui H,Sakakibara Y,Terai G,Mituyama T

更新日期：2008-07-01 00:00:00

abstract：:Mutations in mammalian and Drosophila Hel308 and PolQ paralogues cause genome instability but their helicase functions are mysterious. By in vivo and in vitro analysis, we show that Hel308 from archaea (Hel308a) may act at stalled replication forks. Introducing hel308a into Escherichia coli dnaE strains that condition...

journal_title：Nucleic acids research

authors： Guy CP,Bolt EL

更新日期：2005-06-30 00:00:00

abstract：:Plasmid encoded replication initiation (Rep) proteins recruit host helicases to plasmid replication origins. Previously, we showed that RepD recruits directionally the PcrA helicase to the pC221 oriD, remains associated with it, and increases its processivity during plasmid unwinding. Here we show that RepD forms a co...

journal_title：Nucleic acids research

authors： Machón C,Lynch GP,Thomson NH,Scott DJ,Thomas CD,Soultanas P

更新日期：2010-04-01 00:00:00

abstract：:To screen multiple loci in small purified samples of diploid and aneuploid cells a PCR-based technique of whole genome amplification was adapted to the study of somatic lesions. DNA samples from different numbers of flow-sorted diploid and aneuploid cells from biopsies were amplified with a degenerate 15mer primer. Al...

journal_title：Nucleic acids research

authors： Barrett MT,Reid BJ,Joslyn G

更新日期：1995-09-11 00:00:00

abstract：:Despite the success of conventional Sanger sequencing, significant regions of many genomes still present major obstacles to sequencing. Here we propose a novel approach with the potential to alleviate a wide range of sequencing difficulties. The technique involves extracting target DNA sequence from variants generated...

journal_title：Nucleic acids research

authors： Keith JM,Cochran DA,Lala GH,Adams P,Bryant D,Mitchelson KR

更新日期：2004-02-18 00:00:00

abstract：:A number of different protecting groups were compared with respect to their usefulness for protection of 2'-hydroxyl functions during synthesis of oligoribonucleotides using the H-phosphonate approach. The comparison was between the t-butyldimethylsilyl (t-BDMSi), the o-chlorobenzoyl (o-CIBz), the tetrahydropyranyl (T...

journal_title：Nucleic acids research

authors： Rozners E,Westman E,Strömberg R

更新日期：1994-01-11 00:00:00

abstract：:The Saccharomyces cerevisiae kinase/adenosine triphosphatase Rio1 regulates rDNA transcription and segregation, pre-rRNA processing and small ribosomal subunit maturation. Other roles are unknown. When overexpressed, human ortholog RIOK1 drives tumor growth and metastasis. Likewise, RIOK1 promotes 40S ribosomal subuni...

journal_title：Nucleic acids research

authors： Iacovella MG,Bremang M,Basha O,Giacò L,Carotenuto W,Golfieri C,Szakal B,Dal Maschio M,Infantino V,Beznoussenko GV,Joseph CR,Visintin C,Mironov AA,Visintin R,Branzei D,Ferreira-Cerca S,Yeger-Lotem E,De Wulf P

更新日期：2018-09-06 00:00:00

abstract：:Codon usage data has been compiled for 110 yeast genes. Cluster analysis on relative synonymous codon usage revealed two distinct groups of genes. One group corresponds to highly expressed genes, and has much more extreme synonymous codon preference. The pattern of codon usage observed is consistent with that expected...

journal_title：Nucleic acids research

authors： Sharp PM,Tuohy TM,Mosurski KR

更新日期：1986-07-11 00:00:00

abstract：:Mitochondrial DNA (mtDNA) is entirely dependent on nuclear genes for its transcription and replication. One of these genes is TOP1MT, which encodes the mitochondrial DNA topoisomerase IB, involved in mtDNA relaxation. To elucidate TOP1MT regulation, we performed genome-wide profiling across the 60-cell line panel (the...

journal_title：Nucleic acids research

authors： Zoppoli G,Douarre C,Dalla Rosa I,Liu H,Reinhold W,Pommier Y

更新日期：2011-08-01 00:00:00

abstract：:Chromatin fragments released from intact Friend erythroleukemia cell nuclei during limited incubation with micrococcal nuclease, DNase II or DNase I were analyzed to determine the distribution of DNA methyltransferase in chromatin. The enzyme was released in a free form when internucleosomal DNA was digested with micr...

journal_title：Nucleic acids research

authors： Creusot F,Christman JK

更新日期：1981-10-24 00:00:00

abstract：:A gene bank of Staphylococcus aureus strain Cowan I was established using an E. coli HB101/pBR327 host-vector system. Recombinants expressing staphylococcal protein A (SPA) were detected using an IgG-binding assay. A 3.2 Kb DNA fragment directing the synthesis of SPA in E. coli was identified. SPA produced by E. coli ...

journal_title：Nucleic acids research

authors： Duggleby CJ,Jones SA

更新日期：1983-05-25 00:00:00

abstract：:Approximately half of all human transcripts contain at least one upstream translational initiation site that precedes the main coding sequence (CDS) and gives rise to an upstream open reading frame (uORF). We generated uORFdb, publicly available at http://cbdm.mdc-berlin.de/tools/uorfdb, to serve as a comprehensive li...

journal_title：Nucleic acids research

authors： Wethmar K,Barbosa-Silva A,Andrade-Navarro MA,Leutz A

更新日期：2014-01-01 00:00:00

abstract：:EMAGE (http://genex.hgu.mrc.ac.uk/Emage/database) is a database of in situ gene expression patterns in the developing mouse embryo. Domains of expression from raw data images are spatially integrated into a set of standard 3D virtual mouse embryos at different stages of development, allowing data interrogation by spat...

journal_title：Nucleic acids research

authors： Venkataraman S,Stevenson P,Yang Y,Richardson L,Burton N,Perry TP,Smith P,Baldock RA,Davidson DR,Christiansen JH

更新日期：2008-01-01 00:00:00

abstract：:Dlx homeobox genes are first expressed in embryonic retina at E11.5. The Dlx1/Dlx2 null retina has a reduced ganglion cell layer (GCL), with loss of late-born differentiated retinal ganglion cells (RGCs) due to increased apoptosis. TrkB signaling is proposed to regulate the dynamics of RGC apoptosis throughout develop...

journal_title：Nucleic acids research

authors： de Melo J,Zhou QP,Zhang Q,Zhang S,Fonseca M,Wigle JT,Eisenstat DD

更新日期：2008-02-01 00:00:00