Exon shuffling: mapping polymorphic determinants on hybrid mouse transplantation antigens.

abstract：:The origin and growth of magnetic fields in galaxies is still something of an enigma. It is generally assumed that seed fields are amplified over time through the dynamo effect, but there are few constraints on the timescale. It was recently demonstrated that field strengths as traced by rotation measures of distant (...

journal_title：Nature

authors： Bernet ML,Miniati F,Lilly SJ,Kronberg PP,Dessauges-Zavadsky M

更新日期：2008-07-17 00:00:00

abstract：:Astrophysical observations indicate that there is roughly five times more dark matter in the Universe than ordinary baryonic matter1, and an even larger amount of the Universe's energy content is attributed to dark energy2. However, the microscopic properties of these dark components remain unknown. Moreover, even ord...

journal_title：Nature

authors： Smorra C,Stadnik YV,Blessing PE,Bohman M,Borchert MJ,Devlin JA,Erlewein S,Harrington JA,Higuchi T,Mooser A,Schneider G,Wiesinger M,Wursten E,Blaum K,Matsuda Y,Ospelkaus C,Quint W,Walz J,Yamazaki Y,Budker D,Ulmer S

更新日期：2019-11-01 00:00:00

abstract：: ...

journal_title：Nature

authors： Maitra A

更新日期：2019-03-01 00:00:00

abstract：:A hallmark of RNA silencing is a class of approximately 22-nucleotide RNAs that are processed from double-stranded RNA precursors by Dicer. Accurate processing by Dicer is crucial for the functionality of microRNAs (miRNAs). The current model posits that Dicer selects cleavage sites by measuring a set distance from th...

journal_title：Nature

authors： Park JE,Heo I,Tian Y,Simanshu DK,Chang H,Jee D,Patel DJ,Kim VN

更新日期：2011-07-13 00:00:00

abstract：:Lipoxygenase metabolites of arachidonic acid have recently been shown to modulate the activity of ion channels in nerve and muscle cells. The mechanism of action of these metabolites is, however, unknown. In sensory neurons of Aplysia, the S-K- channel is under the dual modulatory control of 5-hydroxytryptamine (5-HT)...

journal_title：Nature

authors： Buttner N,Siegelbaum SA,Volterra A

更新日期：1989-11-30 00:00:00

abstract：:Carbon-carbon (C-C) bond formation is paramount in the synthesis of biologically relevant molecules, modern synthetic materials and commodity chemicals such as fuels and lubricants. Traditionally, the presence of a functional group is required at the site of C-C bond formation. Strategies that allow C-C bond formation...

journal_title：Nature

authors： Chu JC,Rovis T

更新日期：2016-11-10 00:00:00

abstract：:Lung diseases such as chronic obstructive pulmonary disease and pulmonary fibrosis involve the progressive and inexorable destruction of oxygen exchange surfaces and airways, and have emerged as a leading cause of death worldwide. Mitigating therapies, aside from impractical organ transplantation, remain limited and t...

journal_title：Nature

authors： Zuo W,Zhang T,Wu DZ,Guan SP,Liew AA,Yamamoto Y,Wang X,Lim SJ,Vincent M,Lessard M,Crum CP,Xian W,McKeon F

更新日期：2015-01-29 00:00:00

abstract：:Galaxies congregate in clusters and along filaments, and are missing from large regions referred to as voids. These structures are seen in maps derived from spectroscopic surveys that reveal networks of structure that are interconnected with no clear boundaries. Extended regions with a high concentration of galaxies a...

journal_title：Nature

authors： Tully RB,Courtois H,Hoffman Y,Pomarède D

更新日期：2014-09-04 00:00:00

abstract：:The CD4 molecule is a high-affinity cell-surface receptor for the human immunodeficiency virus (HIV-1) and a soluble truncated form of CD4 produced by recombinant DNA technology is a potent inhibitor of HIV-1 replication and HIV-1-induced cell fusion in vitro. Rhesus monkeys infected with the simian immunodeficiency v...

journal_title：Nature

authors： Watanabe M,Reimann KA,DeLong PA,Liu T,Fisher RA,Letvin NL

更新日期：1989-01-19 00:00:00

abstract：:Photosynthetic dinoflagellates are important aquatic primary producers and notorious causes of toxic 'red tides'. Typical dinoflagellate chloroplasts differ from all other plastids in having a combination of three envelope membranes and peridinin-chlorophyll a/c light-harvesting pigments. Despite evidence of a dinofla...

journal_title：Nature

authors： Zhang Z,Green BR,Cavalier-Smith T

更新日期：1999-07-08 00:00:00

abstract：:Hydrogen peroxide (H2O2) is a major reactive oxygen species in unicellular and multicellular organisms, and is produced extracellularly in response to external stresses and internal cues1-4. H2O2 enters cells through aquaporin membrane proteins and covalently modifies cytoplasmic proteins to regulate signalling and ce...

journal_title：Nature

authors： Wu F,Chi Y,Jiang Z,Xu Y,Xie L,Huang F,Wan D,Ni J,Yuan F,Wu X,Zhang Y,Wang L,Ye R,Byeon B,Wang W,Zhang S,Sima M,Chen S,Zhu M,Pei J,Johnson DM,Zhu S,Cao X,Pei C,Zai Z,Liu Y,Liu T,Swift GB,Zhang W,Y

更新日期：2020-02-01 00:00:00

abstract：:DNA-binding repressor proteins mediate regulation of yeast genes by cell type (Mcm1/alpha 2 and a1/alpha 2), glucose (Mig1) and oxygen (Rox1) (refs 1-4 respectively). An unusual feature of all these regulatory pathways is that transcriptional repression requires two physically associated proteins that do not bind DNA ...

journal_title：Nature

authors： Tzamarias D,Struhl K

更新日期：1994-06-30 00:00:00

abstract：:Rac signalling to actin -- a pathway that is thought to be mediated by the protein Scar/WAVE (WASP (Wiskott-Aldrich syndrome protein)-family verprolin homologous protein -- has a principal role in cell motility. In an analogous pathway, direct interaction of Cdc42 with the related protein N-WASP stimulates actin polym...

journal_title：Nature

authors： Eden S,Rohatgi R,Podtelejnikov AV,Mann M,Kirschner MW

更新日期：2002-08-15 00:00:00

abstract：:Membrane-enclosed organelles, a defining characteristic of eukaryotic cells, are lost during differentiation of specific cell types such as reticulocytes (an intermediate in differentiation of erythrocytes), central fibre cells of the eye lens, and keratinocytes. The degradation of these organelles must be tightly reg...

journal_title：Nature

authors： van Leyen K,Duvoisin RM,Engelhardt H,Wiedmann M

更新日期：1998-09-24 00:00:00

abstract：:Genetic studies, using floral homeotic mutants, have led to the ABC model of flower development. This model proposes that the combinatorial action of three sets of genes, the A, B and C function genes, specify the four floral organs (sepals, petals, stamens and carpels) in the concentric floral whorls. However, attemp...

journal_title：Nature

authors： Honma T,Goto K

更新日期：2001-01-25 00:00:00

abstract：:DNA repair by homologous recombination is highly suppressed in G1 cells to ensure that mitotic recombination occurs solely between sister chromatids. Although many homologous recombination factors are cell-cycle regulated, the identity of the events that are both necessary and sufficient to suppress recombination in G...

journal_title：Nature

authors： Orthwein A,Noordermeer SM,Wilson MD,Landry S,Enchev RI,Sherker A,Munro M,Pinder J,Salsman J,Dellaire G,Xia B,Peter M,Durocher D

更新日期：2015-12-17 00:00:00

abstract：:Nanofabrication strategies are becoming increasingly expensive and equipment-intensive, and consequently less accessible to researchers. As an alternative, scanning probe lithography has become a popular means of preparing nanoscale structures, in part owing to its relatively low cost and high resolution, and a regist...

journal_title：Nature

authors： Shim W,Braunschweig AB,Liao X,Chai J,Lim JK,Zheng G,Mirkin CA

更新日期：2011-01-27 00:00:00

abstract：:Genetic models predict that genomic rearrangement in hybrids can facilitate reproductive isolation and the formation of new species by preventing gene flow between the parent species and hybrid (sunflowers are an example). The mechanism underlying hybridization-induced chromosome remodelling is as yet unknown, althoug...

journal_title：Nature

authors： O'Neill RJ,O'Neill MJ,Graves JA

更新日期：1998-05-07 00:00:00

abstract：:Microsomes prepared from rabbit or pig aortas transformed endoperoxides (PGG2 or PGH2) to an unstable substance (PGX) that inhibited human platelet aggregation. PGX was 30 times more potent in this respect than prostaglandin E1. PGX contracted some gastrointestinal smooth muscle and relaxed certain isolated blood vess...

journal_title：Nature

authors： Moncada S,Gryglewski R,Bunting S,Vane JR

更新日期：1976-10-21 00:00:00

abstract：:Satellite observations have transformed our understanding of the Antarctic cryosphere. The continent holds the vast majority of Earth's fresh water, and blankets swathes of the Southern Hemisphere in ice. Reductions in the thickness and extent of floating ice shelves have disturbed inland ice, triggering retreat, acce...

journal_title：Nature

authors： Shepherd A,Fricker HA,Farrell SL

更新日期：2018-06-01 00:00:00

abstract：:The ethics of biological research, and its general impact, are hotly debated in the West. Japanese silence on the issues is counterproductive. Will the Human Genome Project provide the catalyst for change? ...

journal_title：Nature

authors： Macer D

更新日期：1992-10-29 00:00:00

abstract：:Homogeneous nucleation and subsequent cluster growth leads to the formation of new aerosol particles in the atmosphere. The nucleation of sulfuric acid and organic vapours is thought to be responsible for the formation of new particles over continents, whereas iodine oxide vapours have been implicated in particle form...

journal_title：Nature

authors： Sipilä M,Sarnela N,Jokinen T,Henschel H,Junninen H,Kontkanen J,Richters S,Kangasluoma J,Franchin A,Peräkylä O,Rissanen MP,Ehn M,Vehkamäki H,Kurten T,Berndt T,Petäjä T,Worsnop D,Ceburnis D,Kerminen VM,Kulmala M,O'D

更新日期：2016-09-22 00:00:00

abstract：:In the initiation of translation in eukaryotes, binding of the small ribosomal subunit to the messenger RNA results from recognition of the 5' cap structure (m7GpppX) of the mRNA by the cap-binding complex eIF4F. eIF4F is itself a three-subunit complex comprising the cap-binding protein eIF4E, eIF4A, an ATP-dependent ...

journal_title：Nature

authors： Craig AW,Haghighat A,Yu AT,Sonenberg N

更新日期：1998-04-02 00:00:00

abstract：:Diatremes are carrot-shaped bodies forming the upper parts of very deep magmatic intrusions of kimberlite rock. These unusual, enigmatic and complex features are famous as the source of diamonds. Here we present a new model of kimberlite ascent and eruption, emphasizing the extremely unsteady nature of this process to...

journal_title：Nature

authors： Wilson L,Head Iii JW 3rd

更新日期：2007-05-03 00:00:00

abstract：:Haem is essential for living organisms, functioning as a crucial element in the redox-sensitive reaction centre in haemproteins. During the biogenesis of these proteins, the haem cofactor is typically incorporated enzymatically into the haem pockets of the apo-haemprotein as the functionally indispensable prosthetic g...

journal_title：Nature

authors： Tang XD,Xu R,Reynolds MF,Garcia ML,Heinemann SH,Hoshi T

更新日期：2003-10-02 00:00:00

abstract：:The shape of the human erythrocyte depends on intracellular ATP content and echinocytic erythrocyte ghosts obtained in the presence of Mg-ATP acquire a diskocytic shape after incubation at 37 degrees C; however, agreement is lacking about the molecular basis of the shape changes. The suggestion that phosphorylation of...

journal_title：Nature

authors： Jinbu Y,Sato S,Nakao M

更新日期：1984-01-26 00:00:00

abstract：: ...

journal_title：Nature

authors： Díaz RF

更新日期：2018-11-01 00:00:00

abstract：:The complete knowledge of a quantum state allows the prediction of the probability of all possible measurement outcomes, a crucial step in quantum mechanics. It can be provided by tomographic methods which have been applied to atomic, molecular, spin and photonic states. For optical or microwave photons, standard tomo...

journal_title：Nature

authors： Jullien T,Roulleau P,Roche B,Cavanna A,Jin Y,Glattli DC

更新日期：2014-10-30 00:00:00

abstract：:It has been suggested that arginine vasopressin (AVP) is involved in the retention of learned responses, in addition to its classical physiological functions of water retention and modulation of blood pressure. AVP administered subcutaneously (s.c.), intraventricularly or intracerebrally can prolong extinction of acti...

journal_title：Nature

authors： Koob GF,Dantzer R,Rodriguez F,Bloom FE,Le Moal M

更新日期：1985-06-27 00:00:00

abstract：:Warming surface temperatures have driven a substantial reduction in the extent and duration of Northern Hemisphere snow cover1-3. These changes in snow cover affect Earth's climate system via the surface energy budget, and influence freshwater resources across a large proportion of the Northern Hemisphere4-6. In contr...

journal_title：Nature

authors： Pulliainen J,Luojus K,Derksen C,Mudryk L,Lemmetyinen J,Salminen M,Ikonen J,Takala M,Cohen J,Smolander T,Norberg J

更新日期：2020-05-01 00:00:00