Sigma subunit of Escherichia coli RNA polymerase affects the function of lambda N gene.

abstract：:The heptadecapeptide orphanin FQ (OFQ) is a recently discovered neuropeptide that exhibits structural features reminiscent of the opioid peptides and that is an endogenous ligand to a G protein-coupled receptor sequentially related to the opioid receptors. We have cloned both the human and rat cDNAs encoding the OFQ p...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Nothacker HP,Reinscheid RK,Mansour A,Henningsen RA,Ardati A,Monsma FJ Jr,Watson SJ,Civelli O

更新日期：1996-08-06 00:00:00

abstract：:Classical feed-forward inhibition involves an excitation-inhibition sequence that enhances the temporal precision of neuronal responses by narrowing the window for synaptic integration. In the input layer of the cerebellum, feed-forward inhibition is thought to preserve the temporal fidelity of granule cell spikes dur...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Duguid I,Branco T,Chadderton P,Arlt C,Powell K,Häusser M

更新日期：2015-10-20 00:00:00

abstract：:By affinity chromatography on heparin-Sepharose, two classes of lipoproteins were separated from high density lipoproteins (HDL) isolated from patients with primary or secondary lecithin:cholesterol acyltransferase (LCATase; EC 2.3.1.43) deficiency and from normal subjects. The unretained fraction, HDL(A), was charact...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Marcel YL,Vezina C,Emond D,Suzue G

更新日期：1980-05-01 00:00:00

abstract：:Redistribution of specialized molecules in migrating cells develops asymmetry between two opposite cell poles, the leading edge and the uropod. We show that acquisition of a motile phenotype in T lymphocytes results in the asymmetric redistribution of ganglioside GM3- and GM1-enriched raft domains to the leading edge ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gómez-Móuton C,Abad JL,Mira E,Lacalle RA,Gallardo E,Jiménez-Baranda S,Illa I,Bernad A,Mañes S,Martínez-A C

更新日期：2001-08-14 00:00:00

abstract：:The effect of x-rays on the rate of semiconservative DNA replication was investigated by autoradiography in single cells obtained from normal individuals and from patients having ataxia-telangiectasia (AT). In the five AT cell strains studied, the rate of DNA synthesis was inhibited to a lesser extent that in two norm...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Jaspers NG,Bootsma D

更新日期：1982-04-01 00:00:00

abstract：:All immunoglobulins and T-cell receptors throughout phylogeny share regions of highly conserved amino acid sequence. To identify possible primitive immunoglobulins and immunoglobulin-like molecules, we utilized 3' RACE (rapid amplification of cDNA ends) and a highly conserved constant region consensus amino acid seque...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Berstein RM,Schluter SF,Shen S,Marchalonis JJ

更新日期：1996-04-16 00:00:00

abstract：:A simple model for necking and detachment of subducting slabs is developed to include the coupling between grain-sensitive rheology and grain-size evolution with damage. Necking is triggered by thickened buoyant crust entrained into a subduction zone, in which case grain damage accelerates necking and allows for relat...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Bercovici D,Schubert G,Ricard Y

更新日期：2015-02-03 00:00:00

abstract：:Dominant mutations in the maize homeobox gene knotted1 (kn1) act nonautonomously during maize leaf development, indicating that Kn1 is involved in the generation or transmission of a developmental signal that passes from the inner layers of the leaf to epidermal cells. We previously found that this nonautonomous activ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Kim JY,Yuan Z,Cilia M,Khalfan-Jagani Z,Jackson D

更新日期：2002-03-19 00:00:00

abstract：:This study describes the photochemical deposition of Co-based oxygen evolution catalysts on a semiconductor photoanode for use in solar oxygen evolution. In the photodeposition process, electron-hole pairs are generated in a semiconductor upon illumination and the photogenerated holes are used to oxidize Co(2+) ions t...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Steinmiller EM,Choi KS

更新日期：2009-12-08 00:00:00

abstract：:Virus-specific or group-specific antibody probes to potyviruses can be produced by targeting the immune response to the virus-specific, N-terminal region of the capsid protein (29-95 amino acids depending on the virus) or to the conserved core region (216 amino acids) of the capsid protein, respectively. Immunochemica...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Shukla DD,Tribbick G,Mason TJ,Hewish DR,Geysen HM,Ward CW

更新日期：1989-11-01 00:00:00

abstract：:A vestigial, nonphotosynthetic plastid has been identified recently in protozoan parasites of the phylum Apicomplexa. The apicomplexan plastid, or "apicoplast," is indispensable, but the complete sequence of both the Plasmodium falciparum and Toxoplasma gondii apicoplast genomes has offered no clue as to what essentia...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Waller RF,Keeling PJ,Donald RG,Striepen B,Handman E,Lang-Unnasch N,Cowman AF,Besra GS,Roos DS,McFadden GI

更新日期：1998-10-13 00:00:00

abstract：:Clostridium kluyveri grown in the presence of 1 muM Na2(75)SeO3 produces a thiolase that copurifies with 75Se. Based on several criteria, the selenium moiety in this protein is selenomethionine. The 75Se-labeled amino acid in acid hydrolysates of the radioactive protein cochromatographed with authentic selenomethionin...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hartmanis MG,Stadtman TC

更新日期：1982-08-01 00:00:00

abstract：:T cells react to extremely small numbers of activating agonist peptides. Spatial organization of T-cell receptors (TCR) and their peptide-major histocompatibility complex (pMHC) ligands into microclusters is correlated with T-cell activation. Here we have designed an experimental strategy that enables control over the...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Manz BN,Jackson BL,Petit RS,Dustin ML,Groves J

更新日期：2011-05-31 00:00:00

abstract：:Simian virus 40 (SV40)-transformed hamster cells were relatively resistant to the lytic effect of activated macrophages from animals with chronic intracellular infections. Conversely, SV40-transformed mouse and rat cells and adenovirus 2-transformed hamster cells were highly susceptible to destruction by tumoricidal a...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Cook JL,Hibbs JB Jr,Lewis AM Jr

更新日期：1980-11-01 00:00:00

abstract：:Identifying the drivers and processes that determine globally the geographic range size of species is crucial to understanding the geographic distribution of biodiversity and further predicting the response of species to current global changes. However, these drivers and processes are still poorly understood, and no e...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Carvajal-Quintero J,Villalobos F,Oberdorff T,Grenouillet G,Brosse S,Hugueny B,Jézéquel C,Tedesco PA

更新日期：2019-07-02 00:00:00

abstract：:The voltage-sensor domain (VSD) of voltage-dependent ion channels and enzymes is critical for cellular responses to membrane potential. The VSD can also be regulated by interaction with intracellular proteins and ligands, but how this occurs is poorly understood. Here, we show that the VSD of the BK-type K(+) channel ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Yang H,Hu L,Shi J,Delaloye K,Horrigan FT,Cui J

更新日期：2007-11-13 00:00:00

abstract：:A vaccinia virus host range mutant (hr mutant) deleted of 18 kilobase pairs at the left end of the genome has been employed to precisely map a viral gene required for multiplication in human cells. DNA fragments from the wild-type virus were inserted into the thymidine kinase gene of mutant virus by means of in vivo h...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gillard S,Spehner D,Drillien R,Kirn A

更新日期：1986-08-01 00:00:00

abstract：:α-Dystroglycan (α-DG) is a highly glycosylated basement membrane receptor that is cleaved by the proprotein convertase furin, which releases its N-terminal domain (α-DGN). Before cleavage, α-DGN interacts with the glycosyltransferase LARGE1 and initiates functional O-glycosylation of the mucin-like domain of α-DG. Not...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： de Greef JC,Slütter B,Anderson ME,Hamlyn R,O'Campo Landa R,McNutt EJ,Hara Y,Pewe LL,Venzke D,Matsumura K,Saito F,Harty JT,Campbell KP

更新日期：2019-06-04 00:00:00

abstract：:Chromosome-specific gene regulation is known thus far only as a mechanism to equalize the transcriptional activity of the single male X chromosome with that of the two female X chromosomes. In Drosophila melanogaster, a complex including the five Male-Specific Lethal (MSL) proteins, "paints" the male X chromosome, med...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Larsson J,Chen JD,Rasheva V,Rasmuson-Lestander A,Pirrotta V

更新日期：2001-05-22 00:00:00

abstract：:Ribbon synapses of photoreceptor cells and second-order bipolar neurons in the retina are specialized to transmit graded signals that encode light intensity. Neurotransmitter release at ribbon synapses exhibits two kinetically distinct components, which serve different sensory functions. The faster component is deplet...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Vaithianathan T,Matthews G

更新日期：2014-06-10 00:00:00

abstract：:Highly purified preparations of trp repressor (TrpR) protein derived from Escherichia coli strains that were engineered to overexpress this material were found to contain another protein, of 21 kDa. The second protein, designated WrbA [for tryptophan (W) repressor-binding protein] remained associated with its namesake...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Yang W,Ni L,Somerville RL

更新日期：1993-06-15 00:00:00

abstract：:The enzymic activity of acetylcholinesterase can be photoregulated through the mediation of photochromic inhibitors of the enzyme. N-p-phenylazophenyl-N-phenylcarbamyl fluoride, an irreversible inhibitor of acetylcholinesterase, exists as two geometric isomers which are interconvertible through the action of light. Th...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Bieth J,Vratsanos SM,Wassermann N,Erlanger BF

更新日期：1969-11-01 00:00:00

abstract：:The SOS-inducible ruvA and ruvB gene products of Escherichia coli are required for normal levels of genetic recombination and DNA repair. In vitro, RuvA protein interacts specifically with Holliday junctions and, together with RuvB (an ATPase), promotes their movement along DNA. This process, known as branch migration...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Tsaneva IR,Müller B,West SC

更新日期：1993-02-15 00:00:00

abstract：:The synthesis of antiviral beta-chemokines has joined cytolysis as a potential mechanism for the control of HIV-1 infection by CD8(+) T cells. Recent evidence suggests that these two effector functions can diverge in some individuals infected with HIV-1; however, little is known about the CD8(+) T cell subsets in norm...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Kamin-Lewis R,Abdelwahab SF,Trang C,Baker A,DeVico AL,Gallo RC,Lewis GK

更新日期：2001-07-31 00:00:00

abstract：:Radiation therapy is a widely used cancer treatment, but it causes side effects even when localized radiotherapy is used. Extensive apoptosis of microvascular endothelial cells of the lamina propria is the primary lesion initiating intestinal radiation damage after abdominal radiation therapy. Many in vitro studies su...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Cho CH,Kammerer RA,Lee HJ,Yasunaga K,Kim KT,Choi HH,Kim W,Kim SH,Park SK,Lee GM,Koh GY

更新日期：2004-04-13 00:00:00

abstract：:Worldwide dissemination of antibiotic resistance in bacteria is facilitated by plasmids that encode postsegregational killing (PSK) systems. These produce a stable toxin (T) and a labile antitoxin (A) conditioning cell survival to plasmid maintenance, because only this ensures neutralization of toxicity. Shortage of a...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Pimentel B,Nair R,Bermejo-Rodríguez C,Preston MA,Agu CA,Wang X,Bernal JA,Sherratt DJ,de la Cueva-Méndez G

更新日期：2014-02-18 00:00:00

abstract：:Meiotic mutant (2n) gametes formed by first-division restitution without crossover (FDR-NCO) are expected to be superior to FDR with crossover (FDR-CO) because they transmit to the progeny, without disruption by recombination, almost 100% of the parental genotype. FDR-CO transfers approximately 80% of the parental het...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Buso JA,Boiteux LS,Tai GC,Peloquin SJ

更新日期：1999-02-16 00:00:00

abstract：:In an 1885 paper, E. Picard defined a subgroup Tau(Lambda) of PU(2,1) generated by monodromies and depending on parameters Lambda = (lambda(1),lambda(2),lambda(3),lambda(4)), 0 < lambda(i) < 1, < lambda(i) < 3, lambda(i) + lambda(j) >/= 1, 1

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Mostow GD

更新日期：1981-10-01 00:00:00

abstract：:Activation of an anticancer innate immune response is highly desirable because of its inherent ability to generate an adaptive antitumor T-cell response. However, insufficient safety of innate immune modulators limits clinical use to topical applications. Toll-like receptor 5 (TLR5) agonists are favorably positioned a...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Brackett CM,Kojouharov B,Veith J,Greene KF,Burdelya LG,Gollnick SO,Abrams SI,Gudkov AV

更新日期：2016-02-16 00:00:00

abstract：:This work describes a multifunctional phage lambda expression vector system, lambda YES, designed to facilitate gene isolation from eukaryotes by complementation of Escherichia coli and Saccharomyces cerevisiae mutations. lambda YES vectors have a selection for cDNA inserts using an oligo adaptor strategy and are capa...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Elledge SJ,Mulligan JT,Ramer SW,Spottswood M,Davis RW

更新日期：1991-03-01 00:00:00