abstract：:The DNA sequence of a 354 basepair EcoRI-HindIII fragment of plasmid pMB9 which has originally been derived from plasmid pSC101 has been resolved. This fragment contains a promoter for transcription directed towards the EcoRI site. Escherichia coli RNA polymerase binds to a region within the EcoRI-HindIII fragment whi...

journal_title：Nucleic acids research

authors： Pannekoek H,Maat J,van den Berg E,Noordermeer I

更新日期：1980-04-11 00:00:00

abstract：:Three copies of a highly repetitive DNA sequence B1 which is complementary to the most abundant class of mouse fold-back RNA have been cloned in pBR322 plasmid and sequenced by the method of Maxam and Gilbert. All the three have a length of about 130 base pairs and are very similar in their base sequence. The deviatio...

journal_title：Nucleic acids research

authors： Krayev AS,Kramerov DA,Skryabin KG,Ryskov AP,Bayev AA,Georgiev GP

更新日期：1980-03-25 00:00:00

abstract：:Chicken globin double-stranded cDNA was synthesised from anaemic adult reticulocyte alpha- and beta-globin mRNA and ligated into the Hind III site of pBR322 using synthetic Hind III decamers. Transformation of E. coli x1776 resulted in the production of a number of alpha- and beta-cDNA clones. One of the alpha-type cl...

journal_title：Nucleic acids research

authors： Deacon NJ,Shine J,Naora H

更新日期：1980-03-25 00:00:00

abstract：:A phosphotriester solid phase method on a polyamide support has been used to prepare oligodeoxyribonucleotides up to 12 units long. Compared to solid phase phosphodiester synthesis the new methodology is quicker, more flexible and gives 10-60-fold better overall yields. ...

journal_title：Nucleic acids research

authors： Gait MJ,Singh M,Sheppard RC,Edge MD,Greene AR,Heathcliffe GR,Atkinson TC,Newton CR,Markham AF

更新日期：1980-03-11 00:00:00

abstract：:The 3' terminal nucleotide sequence of two clones containing DNA complementary to mu chain mRNA of IgM-secreting cells has been determined. The sequence shows a termination codon (UGA) adjacent to the terminal tyrosine codon for the secreted protein and a 3' non-coding region of at least 106 bases. The primary transla...

journal_title：Nucleic acids research

authors： Matthyssens G,Rabbitts TH

更新日期：1980-02-25 00:00:00

abstract：:The tight-binding I12-X86 lac repressor binds to non-operator DNA in a sequence-specific fashion. Using the DNA of the E. coli I gene we have investigated these sequence-specific interactions and compared them to the operator binding of wild-type repressor. The specific, non-operator DNA interactions are sensitive to ...

journal_title：Nucleic acids research

authors： Schmitz A,Galas DJ

更新日期：1980-02-11 00:00:00

abstract：:The transcription of ribosomal genes in a cell line (Kc) derived from female D.melanogaster, has been investigated using hybridization probes prepared from restriction fragments of a cloned rDNA repeat with a 5 kb type I [Wellauer et al. (1978) Cell 14, 269-278] intron. Gels, of nuclear RNA that have been transferred ...

journal_title：Nucleic acids research

authors： Jolly DJ,Thomas CA Jr

更新日期：1980-01-11 00:00:00

abstract：:Frequencies for each of the 61 amino acid codons have been determined in every published mRNA sequence of 50 or more codons. The frequencies are shown for each kind of genome and for each individual gene. A surprising consistency of choices exists among genes of the same or similar genomes. Thus each genome, or kind o...

journal_title：Nucleic acids research

authors： Grantham R,Gautier C,Gouy M,Mercier R,Pavé A

更新日期：1980-01-11 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：:The effect of different levels of mercury substitution on the rate and extent of hybridisation of globin mRNA with a complementary DNA (cDNA) copy has been investigated. It was found that mercuration significantly reduces both the rate of hybridisation and the extent of the reaction, but that these effects are abolish...

journal_title：Nucleic acids research

authors： Brown TD,Balmain A

更新日期：1979-12-20 00:00:00

abstract：:A small cloned DNA segment previously shown to contain all genetic information for the expression of the tRNA1met gene of Xenopus laevis was cleaved into an anterior and posterior portion by Hae III restriction. Both restriction fragments were cloned in pCR1 using EcoRI linkers. Starting from these tDNA subclones, a s...

journal_title：Nucleic acids research

authors： Kressmann A,Hofstetter H,Di Capua E,Grosschedl R,Birnstiel ML

更新日期：1979-12-11 00:00:00

abstract：:Based on the secondary structural model of MS2 RNA, it is shown that, in base-pairing regions of the RNA, there is a bias in the use of synonymous codons which favours C and/or G over U and/or A in the third codon positions, and that in non-pairing regions, there is an opposite bias which favours U and/or A over C and...

journal_title：Nucleic acids research

authors： Hasegawa M,Yasunaga T,Miyata T

更新日期：1979-12-11 00:00:00

abstract：:Highly conserved sequences present at an identical position near the 3' ends of eukaryotic and prokaryotic 5S rRNAs are complementary to the 5' strand of the m2(6)A hairpin structure near the 3' ends of 18S rRNA and 16S rRNA, respectively. The extent of base-pairing and the calculated stabilities of the hybrids that c...

journal_title：Nucleic acids research

authors： Azad AA

更新日期：1979-12-11 00:00:00

abstract：:A dot hybridization method is presented for rapidly determining the relative concentrations of nucleic acids in a mixture, as well as the extent of sequence homology between related RNA or DNA species. ...

journal_title：Nucleic acids research

authors： Kafatos FC,Jones CW,Efstratiadis A

更新日期：1979-11-24 00:00:00

abstract：:By means of titration viscometry a number of distinct modes could be resolved for the interaction between the antibiotic netropsin and DNA species of 50, 58, and 69 mole + (A+T) below r = 0.04 netropsin molecules bound per DNA phosphate group. The number of corresponding binding sites increases with a high power of th...

journal_title：Nucleic acids research

authors： Reinert KE,Stutter E,Schweiss H

更新日期：1979-11-10 00:00:00

abstract：:Three clones containing both the human G gamma and A gamma globlin genes have been isolated and characterized from a library of DNA fragments generated by partial Eco RI digestion of cellular DNA using charon 4A phage as vector. Two of the clones (NY 2 and 3) are identical and have an insert of 14.0 kb. The third clon...

journal_title：Nucleic acids research

authors： Ramirez F,Burns AL,Mears JG,Spence S,Starkman D,Bank A

更新日期：1979-11-10 00:00:00

abstract：:Nucleotide sequences of large T1 ribonuclease fragments of 18S ribosomal RNA of Novikoff rat ascites hepatoma cells and chicken lymphoblastoid cells were determined and compared. Among the 19 large T1 ribonuclease fragments examined of rat 18S ribosomal RNA, 12 fragments were found to be the same in chicken 18S riboso...

journal_title：Nucleic acids research

authors： Fuke M,Busch H

更新日期：1979-11-10 00:00:00

abstract：:Spermine-DNA complexes have been examined by small-angle and wide-angle X-ray scattering as well as by circular dichroism studies. Condensed complexes are building up below a critical ionic strength. We have found that at one and the same ionic strength condensed complexes having two different supramolecular structure...

journal_title：Nucleic acids research

authors： Becker M,Misselwitz R,Damaschun H,Damaschun G,Zirwer D

更新日期：1979-11-10 00:00:00

abstract：:The extent of base pairing in Escherichia coli and Bacillus stearothermophilus 5S RNAs was determined by infrared spectroscopy. From the infrared spectra taken at 20 degrees and 52 degrees C it is concluded that E. coli and B. stearothermophlius 5S RNAs possess a large number of base pairs (Table I). Comparison of our...

journal_title：Nucleic acids research

authors： Appel B,Erdmann VA,Stulz J,Ackerman T

更新日期：1979-10-25 00:00:00

abstract：:The gene for the thymidine kinase (TK) of Herpes simplex virus type 1 (HSV-1) is located in the KpnI m and BamHI p fragments of the genome (Wigler et al., Cell 11, 223-232 (1977)). These fragments have been inserted into the EcoRI and BamHI sites, respectively, of plasmid pBR322, and propagated in E.coli. The TK gene ...

journal_title：Nucleic acids research

authors： Wilkie NM,Clements JB,Boll W,Mantei N,Lonsdale D,Weissmann C

更新日期：1979-10-25 00:00:00

abstract：:The interaction specificity of salmon sperm DNA with 2-hydroxyethanethionlato(2,2',2''-terpyridine)platinum(II),PtTS has been studied. The results of 1H and 13C nuclear magnetic resonance, flow dichroism and circular dichroism studies are found to be consistent with an intercalation mode of binding as has been propose...

journal_title：Nucleic acids research

authors： Gabbay EJ,Adkins MA,Yen S

更新日期：1979-10-25 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

authors： Bradley MO,Kohn KW

更新日期：1979-10-10 00:00:00

abstract：:Tetramers of the arginine-rich histones H3 and H4 associate with supercoiled SV40 DNA either singly, giving tetrameric nucleoprotein complexes or in pairs giving octameric complexes, both of which are visualized as beads in the electron microscope. The relative amounts of the two complexes may be revealed by complete ...

journal_title：Nucleic acids research

authors： Thomas JO,Oudet P

更新日期：1979-10-10 00:00:00

abstract：:The integrity and stability of nucleosomes under transcription assay conditions has been found to depend on concentration and ionic environment. Rifamycin AF/013, a commonly used inhibitor of initiation, is particularly effective in destabilisation of nucleosomes. Intact nucleosomes are refractory to transcription by ...

journal_title：Nucleic acids research

authors： Lilley DM,Jacobs MF,Houghton M

更新日期：1979-09-25 00:00:00

abstract：:We have determined the sequence of 80 nucleotides adjacent to 3' poly(A) of both (middle and bottom component) cowpea mosaic virus RNAs, using dideoxynucleotide termination of reverse transcription. Sequence conservation is indicated, there being about 80% homology between the first 65 bases of each RNA. Although both...

journal_title：Nucleic acids research

authors： Davies JW,Stanley J,Van Kammen A

更新日期：1979-09-25 00:00:00

abstract：:Synthesis of 8-phosphorus substituted isosteres of purine [pyrimidino (4,5-d)-1,3,2-diazaphosphole], 1-deazapurine [pyridino (2,3-d)-1,3,2-diazaphosphole] and 3-deazapurine [pyridino (4,5-d)-1,3,2-diazaphosphole] has been achieved by the reaction of equimolar amounts of triphenylphosphite and 4,5-diaminopyrimidine, 2,...

journal_title：Nucleic acids research

authors： Khwaja TA,Pande H

更新日期：1979-09-11 00:00:00

abstract：:Under-modified E. coli tRNATyr that contains 7-(aminomethyl)-7-deazaguanosine in place of Q nucleoside can be chemically modified by dansyl chloride under neutral conditions. Fluorescent labelling specifically occurred only in the 7-(aminomethyl)-7-deazaguanine moiety. The modified tRNATyr was found to be active both ...

journal_title：Nucleic acids research

authors： Kasai H,Shindo-Okada N,Noguchi S,Nishimura S

更新日期：1979-09-11 00:00:00

abstract：:With the aid of a novel poly-dA tailing-partial restriction technique and S1-protection mapping, the 5' terminal coding sequence for the 40S precursor ribosomal RNA of Xenopus laevis has been exactly identified. Since the promoter sequence for the 40S RNA should lie close to its 5' terminal coding sequence, we are abl...

journal_title：Nucleic acids research

authors： Moss T,Birnstiel ML

更新日期：1979-08-24 00:00:00

abstract：:Structural changes of reconstituted SV 40 minichromosomes have been studied in relation to the salt concentration and addition of histone H1 by sedimentation and electron microscopy. Sedimentation data are represented as functions of the NaCl concentration and the Debye-Hückel electrostatic screening radius 1/alpha. T...

journal_title：Nucleic acids research

authors： Böttger M,Scherneck S,von Mickwitz CU,Fenske H,Lindigkeit R

更新日期：1979-08-10 00:00:00

abstract：:To examine the influence of thyrotropin (TSH) on the thyroglobulin (Tgb) mRNA content, the latter was evaluated in the cytoplasm of hog thyroid cells cultured in the absence (control cells) or presence of TSH. The Tgb mRNA levels were determined by, (i) kinetics of hybridization to sheep Tgb cDNA, (ii) capacity of cod...

journal_title：Nucleic acids research

authors： Chebath J,Chabaud O,Mauchamp J

更新日期：1979-07-25 00:00:00

abstract：:Two fragments cloned from purified human satellite III DNA do not cross-react with each other. One fragment, for which a partial sequence is reported, hybridises to satellite II as well as III and is shown to originate on chromosome 1. The other cloned fragment originates from the Y chromosome. This fragment has under...

journal_title：Nucleic acids research

authors： Cooke HJ,Hindley J

更新日期：1979-07-25 00:00:00

abstract：:Only the deproteinized DNA preparations of the simian adenovirus of the type 7 (SA 7) exhibited transforming and tumorigenic activity. The complex of the SA7 DNA with terminal protein (TP) did not exhibit either transforming or tumorigenic activity in cell cultures. In contrast to the transforming potential the infect...

journal_title：Nucleic acids research

authors： Ponomareva TI,Grodnitskaya NA,Goldberg EE,Chaplygina NM,Naroditsky BS,Tikchonenko TI

更新日期：1979-07-11 00:00:00

abstract：:An improved contact hybridization technique for the analysis of labelled RNA species is presented. The method combines high sensitivity of detection with the high resolution of polyacrylamide gel electrophoresis and should be especially useful for the characterization of transient RNA precursor molecules. Its applicat...

journal_title：Nucleic acids research

authors： Burckhardt J,Telford J,Birnstiel ML

更新日期：1979-07-11 00:00:00

abstract：:Double-stranded soybean leghemoglobin DNA was synthesized from leghemoglobin mRNA isolated from soybean nodules. The dsDNA was inserted into the Bam H1 site of plasmid pBR322 using the poly-dAT-joiner method. A cloned DNA fragment of one recombinant plasmid was isolated and characterized by restriction endonuclease di...

journal_title：Nucleic acids research

authors： Truelsen E,Gausing K,Jochimsen B,Jørgensen P,Marcker KA

更新日期：1979-07-11 00:00:00

abstract：:Late SV40 16S and 19S mRNAs were found to contain an average of three m6A residues per mRNA molecule. The methylated residues of both the viral and cellular mRNAs occur in two sequences; Gpm6ApC and (Ap)nm6ApC, where n = 1-4. More than 60% of the m6A residues in SV40 16S and 19S mRNAs occur in Gpm6ApC even though ther...

journal_title：Nucleic acids research

authors： Canaani D,Kahana C,Lavi S,Groner Y

更新日期：1979-06-25 00:00:00

abstract：:The UGA suppressor tRNA produced by Schizosaccharomyces pombe strain sup3-e was purified to homogeneity. It can be aminoacylated with a serine by a crude aminoacyl-tRNA synthetase preparation from S. pombe cells. By combining post-labeling fingerprinting and gel sequencing methods the nucleotide sequence of this tRNA ...

journal_title：Nucleic acids research

authors： Rafalski A,Kohli J,Agris P,Söll D

更新日期：1979-06-25 00:00:00

abstract：:A DNA region of 2750 base pairs encompassing the genes III, VI and I of bacteriophage M13 has been sequenced by the Maxam-Gilbert procedure. By establishing the nucleotide changes introduced by several amber mutations, the coding region and the regulatory signals of each gene have been deduced. The genes appear to spa...

journal_title：Nucleic acids research

authors： van Wezenbeek P,Schoenmakers JG

更新日期：1979-06-25 00:00:00

abstract：:Purified 15 S globin mRNA-protein (mRNP) complexes obtained by EDTA dissociation of duck reticulocytes polyribosomes were digested with the calcium dependant Staphylococcus aureus nuclease (EC 3. 1. 4. 7.). 25% of the globin mRNA sequences were resistant to extensive nuclease digestion as determined by TCA precipitati...

journal_title：Nucleic acids research

authors： Goldenberg S,Vincent A,Scherrer K

更新日期：1979-06-25 00:00:00

abstract：:Chicken conalbumin double-stranded cDNA (con-dscDNA) was synthesized from a laying hen oviduct mRNA preparation enriched for conalbumin mRNA (con-mRNA). The dscDNA was inserted by blunt-end ligation into the Sal I site of plasmid pBR322 which had been repaired with DNA polymerase I to create Taq I sites on each side o...

journal_title：Nucleic acids research

authors： Cochet M,Perrin F,Gannon F,Krust A,Chambon P,McKnight GS,Lee DC,Mayo KE,Palmiter R

更新日期：1979-06-11 00:00:00

abstract：:A method is presented for the purification of mRNAs and the identification of structural gene sequences in recombinant DNA molecules. RNA is hybridized to double-stranded linear DNA such that R-loops are formed between most DNAs and their complementary RNA sequences. These R-loops are purified from unhybridized RNAs b...

journal_title：Nucleic acids research

authors： Woolford JL Jr,Rosbash M

更新日期：1979-06-11 00:00:00