Extensive variation of human immunodeficiency virus type-1 in vivo.

abstract：:Most sensory information destined for the neocortex is relayed through the thalamus, where considerable transformation occurs1,2. One means of transformation involves interactions between excitatory thalamocortical neurons that carry data to the cortex and inhibitory neurons of the thalamic reticular nucleus (TRN) tha...

journal_title：Nature

authors： Martinez-Garcia RI,Voelcker B,Zaltsman JB,Patrick SL,Stevens TR,Connors BW,Cruikshank SJ

更新日期：2020-07-01 00:00:00

abstract：:Troponin is essential in Ca(2+) regulation of skeletal and cardiac muscle contraction. It consists of three subunits (TnT, TnC and TnI) and, together with tropomyosin, is located on the actin filament. Here we present crystal structures of the core domains (relative molecular mass of 46,000 and 52,000) of human cardia...

journal_title：Nature

authors： Takeda S,Yamashita A,Maeda K,Maéda Y

更新日期：2003-07-03 00:00:00

abstract：:To ensure cell survival, it is essential that the ubiquitous pro-apoptotic machinery is kept quiescent. As death is irreversible, cells must continually integrate developmental information with regulatory inputs to control the switch between repressing and activating apoptosis. Inappropriate activation or suppression ...

journal_title：Nature

authors： Bloss TA,Witze ES,Rothman JH

更新日期：2003-08-28 00:00:00

abstract：:Some people inherit an unfortunate combination of genetic sequences, such that exposure to an external trigger causes their immune response to turn on their own tissues. Although mutations in a single gene can cause autoimmunity, most autoimmune diseases are associated with several sequence variants. Marked advances i...

journal_title：Nature

authors： Rioux JD,Abbas AK

更新日期：2005-06-02 00:00:00

abstract：:The Earth's equatorial stratosphere shows oscillations in which the east-west winds reverse direction and the temperatures change cyclically with a period of about two years. This phenomenon, called the quasi-biennial oscillation, also affects the dynamics of the mid- and high-latitude stratosphere and weather in the ...

journal_title：Nature

authors： Flasar FM,Kunde VG,Achterberg RK,Conrath BJ,Simon-Miller AA,Nixon CA,Gierasch PJ,Romani PN,Bézard B,Irwin P,Bjoraker GL,Brasunas JC,Jennings DE,Pearl JC,Smith MD,Orton GS,Spilker LJ,Carlson R,Calcutt SB,Read PL,Ta

更新日期：2004-01-08 00:00:00

abstract：:The structure-function relationship of the nicotinic acetylcholine receptor (AChR) has been effectively studied by the combination of complementary DNA manipulation and single-channel current analysis. Previous work with chimaeras between the Torpedo californica and bovine AChR delta-subunits has shown that the region...

journal_title：Nature

authors： Imoto K,Busch C,Sakmann B,Mishina M,Konno T,Nakai J,Bujo H,Mori Y,Fukuda K,Numa S

更新日期：1988-10-13 00:00:00

abstract：:Fluorine is the thirteenth most abundant element in the earth's crust, but fluoride concentrations in surface water are low and fluorinated metabolites are extremely rare. The fluoride ion is a potent nucleophile in its desolvated state, but is tightly hydrated in water and effectively inert. Low availability and a la...

journal_title：Nature

authors： Dong C,Huang F,Deng H,Schaffrath C,Spencer JB,O'Hagan D,Naismith JH

更新日期：2004-02-05 00:00:00

abstract：:During wild-type development, a protein product of the Caenorhabditis elegans heterochronic gene lin-14 is localized to nuclei of specific somatic cells in embryos and early larvae, but is absent in late larvae and adult soma. Gain-of-function lin-14 mutations cause the level of lin-14 protein to remain high throughou...

journal_title：Nature

authors： Ruvkun G,Giusto J

更新日期：1989-03-23 00:00:00

abstract：:N-methyl-d-aspartate (NMDA) receptors (NMDARs) are a major class of excitatory neurotransmitter receptors in the central nervous system. They form glutamate-gated ion channels that are highly permeable to calcium and mediate activity-dependent synaptic plasticity. NMDAR dysfunction is implicated in multiple brain diso...

journal_title：Nature

authors： Gielen M,Siegler Retchless B,Mony L,Johnson JW,Paoletti P

更新日期：2009-06-04 00:00:00

abstract：:Jets of highly energized plasma with relativistic velocities are associated with black holes ranging in mass from a few times that of the Sun to the billion-solar-mass black holes at the centres of galaxies. A popular but unconfirmed hypothesis to explain how the plasma is energized is the 'internal shock model', in w...

journal_title：Nature

authors： Meyer ET,Georganopoulos M,Sparks WB,Perlman E,van der Marel RP,Anderson J,Sohn ST,Biretta J,Norman C,Chiaberge M

更新日期：2015-05-28 00:00:00

abstract：:Cells are eliminated in a variety of physiological settings by apoptosis, a genetically encoded process of cellular suicide. Apoptosis comprises an intrinsic cellular defence against tumorigenesis, which, when suppressed, may contribute to the development of malignancies. The bcl-2 oncogene, which is activated in foll...

journal_title：Nature

authors： Chittenden T,Harrington EA,O'Connor R,Flemington C,Lutz RJ,Evan GI,Guild BC

更新日期：1995-04-20 00:00:00

abstract：:The neural substrates that the fruitfly Drosophila uses to sense smell, taste and light share marked structural and functional similarities with ours, providing attractive models to dissect sensory stimulus processing. Here we focus on two of the remaining and less understood prime sensory modalities: graviception and...

journal_title：Nature

authors： Kamikouchi A,Inagaki HK,Effertz T,Hendrich O,Fiala A,Göpfert MC,Ito K

更新日期：2009-03-12 00:00:00

abstract：:Neurons in the visual cortex typically respond selectively to the orientation, and velocity and direction of movement, of moving-bar stimuli. These responses are generally thought to provide information about the orientation and position of lines and edges in the visual field. Some cells are also endstopped, that is s...

journal_title：Nature

authors： Dobbins A,Zucker SW,Cynader MS

更新日期：1987-10-01 00:00:00

abstract：:Three-wave mixing in nonlinear materials--the interaction of two light waves to produce a third--is a convenient way of generating new optical frequencies from common laser sources. However, the resulting optical conversion yield is generally poor, because the relative phases of the three interacting waves change cont...

journal_title：Nature

authors： Baudrier-Raybaut M,Haïdar R,Kupecek P,Lemasson P,Rosencher E

更新日期：2004-11-18 00:00:00

abstract：:Vitamin A is required for normal growth and development, and retinoic acid (RA) may be the active metabolite in this process. Recent evidence indicates that RA acts through binding to a nuclear receptor which belongs to the steroid/thyroid hormone receptor superfamily. The receptors seem to associate with hormone-resp...

journal_title：Nature

authors： Bedo G,Santisteban P,Aranda A

更新日期：1989-05-18 00:00:00

abstract：:Government policies currently commit us to surface warming of three to four degrees Celsius above pre-industrial levels by 2100, which will lead to enhanced ice-sheet melt. Ice-sheet discharge was not explicitly included in Coupled Model Intercomparison Project phase 5, so effects on climate from this melt are not cur...

journal_title：Nature

authors： Golledge NR,Keller ED,Gomez N,Naughten KA,Bernales J,Trusel LD,Edwards TL

更新日期：2019-02-01 00:00:00

abstract：:Despite antiretroviral therapy (ART), human immunodeficiency virus (HIV)-1 persists in a stable latent reservoir, primarily in resting memory CD4(+) T cells. This reservoir presents a major barrier to the cure of HIV-1 infection. To purge the reservoir, pharmacological reactivation of latent HIV-1 has been proposed an...

journal_title：Nature

authors： Deng K,Pertea M,Rongvaux A,Wang L,Durand CM,Ghiaur G,Lai J,McHugh HL,Hao H,Zhang H,Margolick JB,Gurer C,Murphy AJ,Valenzuela DM,Yancopoulos GD,Deeks SG,Strowig T,Kumar P,Siliciano JD,Salzberg SL,Flavell RA,Shan

更新日期：2015-01-15 00:00:00

abstract：:Appropriate repair of DNA lesions and the inhibition of DNA repair activities at telomeres are crucial to prevent genomic instability. By fuelling the generation of genetic alterations and by compromising cell viability, genomic instability is a driving force in cancer and ageing. Here we identify MAD2L2 (also known a...

journal_title：Nature

authors： Boersma V,Moatti N,Segura-Bayona S,Peuscher MH,van der Torre J,Wevers BA,Orthwein A,Durocher D,Jacobs JJL

更新日期：2015-05-28 00:00:00

abstract：:Retinoid X receptor (RXR) plays a central role in the regulation of many intracellular receptor signalling pathways and can mediate ligand-dependent transcription, acting as a homodimer or as a heterodimer. Here we identify an antagonist towards RXR homodimers which also functions as an agonist when RXR is paired as a...

journal_title：Nature

authors： Lala DS,Mukherjee R,Schulman IG,Koch SS,Dardashti LJ,Nadzan AM,Croston GE,Evans RM,Heyman RA

更新日期：1996-10-03 00:00:00

abstract：:In metazoans, the Ras-Raf-MEK (mitogen-activated protein-kinase kinase)-ERK (extracellular signal-regulated kinase) signalling pathway relays extracellular stimuli to elicit changes in cellular function and gene expression. Aberrant activation of this pathway through oncogenic mutations is responsible for a large prop...

journal_title：Nature

authors： Brennan DF,Dar AC,Hertz NT,Chao WC,Burlingame AL,Shokat KM,Barford D

更新日期：2011-04-21 00:00:00

abstract：:Olefin chemistry, through pericyclic reactions, polymerizations, oxidations, or reductions, has an essential role in the manipulation of organic matter. Despite its importance, olefin synthesis still relies largely on chemistry introduced more than three decades ago, with metathesis being the most recent addition. Her...

journal_title：Nature

authors： Edwards JT,Merchant RR,McClymont KS,Knouse KW,Qin T,Malins LR,Vokits B,Shaw SA,Bao DH,Wei FL,Zhou T,Eastgate MD,Baran PS

更新日期：2017-05-11 00:00:00

abstract：:Dominant alleles at the agouti locus (A) cause an obesity syndrome in the mouse, as a consequence of ectopic expression of the agouti peptide. This peptide, normally only found in the skin, is a high-affinity antagonist of the melanocyte-stimulating hormone receptor (MC1-R), thus explaining the inhibitory effect of ag...

journal_title：Nature

authors： Fan W,Boston BA,Kesterson RA,Hruby VJ,Cone RD

更新日期：1997-01-09 00:00:00

abstract：:Here we describe the LifeTime Initiative, which aims to track, understand and target human cells during the onset and progression of complex diseases, and to analyse their response to therapy at single-cell resolution. This mission will be implemented through the development, integration and application of single-cell...

journal_title：Nature

authors： Rajewsky N,Almouzni G,Gorski SA,Aerts S,Amit I,Bertero MG,Bock C,Bredenoord AL,Cavalli G,Chiocca S,Clevers H,De Strooper B,Eggert A,Ellenberg J,Fernández XM,Figlerowicz M,Gasser SM,Hubner N,Kjems J,Knoblich JA,Kra

更新日期：2020-11-01 00:00:00

abstract：:Double-stranded DNA copies of the RNA gene coding for the haemagglutinin glycoproteins from human H2 and H3 pandemic strains of influenza virus have been cloned. DNA sequence analysis provides the first reported complete nucleotide sequence of an H2 haemagglutinin gene and a partial sequence (45%) of the H3 gene. The ...

journal_title：Nature

authors： Gething MJ,Bye J,Skehel J,Waterfield M

更新日期：1980-09-25 00:00:00

abstract：:The factors driving glacial changes in ocean overturning circulation are not well understood. On the basis of a comparison of 20 climate variables over the past four glacial cycles, the SPECMAP project proposed that summer insolation at high northern latitudes (that is, Milankovitch forcing) drives the same sequence o...

journal_title：Nature

authors： Lisiecki LE,Raymo ME,Curry WB

更新日期：2008-11-06 00:00:00

abstract：:The TE1 family of transposable elements (TEs) of Drosophila consists of unusually large transposons, cytologically visible in larval polytene chromosomes as one or more bands. They are composite elements, as their termini consist of foldback (FB) sequences which are themselves transposable. The location of FB elements...

journal_title：Nature

authors： Chia W,McGill S,Karp R,Gubb D,Ashburner M

更新日期：1985-07-04 00:00:00

abstract：:The TGF-beta/activin/BMP superfamily of growth factors signals through heteromeric receptor complexes of type I and type II serine/threonine kinase receptors. The signal originated by TGF-beta-like molecules appears to be transduced by a set of evolutionarily conserved proteins known as SMADs, which upon activation di...

journal_title：Nature

authors： Lagna G,Hata A,Hemmati-Brivanlou A,Massagué J

更新日期：1996-10-31 00:00:00

abstract：:In a very short time the scanning tunnelling microscope has become an important tool in surface science, and physics in general. Its primary use has been to obtain atomic-resolution images of surfaces, but recently, efforts have been made to use it to manipulate materials as well as image them. One may now reasonably ...

journal_title：Nature

authors： Foster JS,Frommer JE,Arnett PC

更新日期：1988-01-28 00:00:00

abstract：:The atmosphere and ionosphere of Venus have been studied in the past by spacecraft with remote sensing or in situ techniques. These early missions, however, have left us with questions about, for example, the atmospheric structure in the transition region from the upper troposphere to the lower mesosphere (50-90 km) a...

journal_title：Nature

authors： Pätzold M,Häusler B,Bird MK,Tellmann S,Mattei R,Asmar SW,Dehant V,Eidel W,Imamura T,Simpson RA,Tyler GL

更新日期：2007-11-29 00:00:00

abstract：:Deep chlorophyll maxima (DCMs) are widespread in large parts of the world's oceans. These deep layers of high chlorophyll concentration reflect a compromise of phytoplankton growth exposed to two opposing resource gradients: light supplied from above and nutrients supplied from below. It is often argued that DCMs are ...

journal_title：Nature

authors： Huisman J,Pham Thi NN,Karl DM,Sommeijer B

更新日期：2006-01-19 00:00:00