A palaeotemperature curve for the Precambrian oceans based on silicon isotopes in cherts.

abstract：:Transformation of the well-studied maize transposable elements into other plant species should enable transposon tagging methodology to be used for the isolation of interesting genes in the heterologous host. Here we describe the isolation of a transposon-tagged male sterile mutant in Arabidopsis thaliana using the ma...

journal_title：Nature

authors： Aarts MG,Dirkse WG,Stiekema WJ,Pereira A

更新日期：1993-06-24 00:00:00

abstract：:Cocaine is a powerfully addictive substance and new strategies are needed to treat its abuse. Generating an active immunization to cocaine offers a means of blocking the actions of the drug by preventing it from entering the central nervous system, and should have fewer side effects than treatments based on manipulati...

journal_title：Nature

authors： Carrera MR,Ashley JA,Parsons LH,Wirsching P,Koob GF,Janda KD

更新日期：1995-12-14 00:00:00

abstract：:The IKKalpha and IKKbeta catalytic subunits of IkappaB kinase (IKK) share 51% amino-acid identity and similar biochemical activities: they both phosphorylate IkappaB proteins at serines that trigger their degradation. IKKalpha and IKKbeta differ, however, in their physiological functions. IKKbeta and the IKKgamma/NEMO...

journal_title：Nature

authors： Hu Y,Baud V,Oga T,Kim KI,Yoshida K,Karin M

更新日期：2001-04-05 00:00:00

abstract：:Milankovitch proposed that summer insolation at mid-latitudes in the Northern Hemisphere directly causes the ice-age climate cycles. This would imply that times of ice-sheet collapse should correspond to peaks in Northern Hemisphere June insolation. But the penultimate deglaciation has proved controversial because Jun...

journal_title：Nature

authors： Henderson GM,Slowey NC

更新日期：2000-03-02 00:00:00

abstract：:Clear cell renal cell carcinoma (ccRCC), the most common form of kidney cancer, is characterized by elevated glycogen levels and fat deposition. These consistent metabolic alterations are associated with normoxic stabilization of hypoxia-inducible factors (HIFs) secondary to von Hippel-Lindau (VHL) mutations that occu...

journal_title：Nature

authors： Li B,Qiu B,Lee DS,Walton ZE,Ochocki JD,Mathew LK,Mancuso A,Gade TP,Keith B,Nissim I,Simon MC

更新日期：2014-09-11 00:00:00

abstract：:Strong interactions between electrons in a solid material can lead to surprising properties. A prime example is the Mott insulator, in which suppression of conductivity occurs as a result of interactions rather than a filled Bloch band. Proximity to the Mott insulating phase in fermionic systems is the origin of many ...

journal_title：Nature

authors： Jördens R,Strohmaier N,Günter K,Moritz H,Esslinger T

更新日期：2008-09-11 00:00:00

abstract：:The interrelationships between major living vertebrate, and even chordate, groups are now reasonably well resolved thanks to a large amount of generally congruent data derived from molecular sequences, anatomy and physiology. But fossils provide unexpected combinations of characters that help us to understand how the ...

journal_title：Nature

authors： Janvier P

更新日期：2015-04-23 00:00:00

abstract：:Gene targeting in embryonic stem cells has become the principal technology for manipulation of the mouse genome, offering unrivalled accuracy in allele design and access to conditional mutagenesis. To bring these advantages to the wider research community, large-scale mouse knockout programmes are producing a permanen...

journal_title：Nature

authors： Skarnes WC,Rosen B,West AP,Koutsourakis M,Bushell W,Iyer V,Mujica AO,Thomas M,Harrow J,Cox T,Jackson D,Severin J,Biggs P,Fu J,Nefedov M,de Jong PJ,Stewart AF,Bradley A

更新日期：2011-06-15 00:00:00

abstract：:Thrombosis--localized clotting of the blood--can occur in the arterial or the venous circulation and has a major medical impact. Acute arterial thrombosis is the proximal cause of most cases of myocardial infarction (heart attack) and of about 80% of strokes, collectively the most common cause of death in the develope...

journal_title：Nature

authors： Mackman N

更新日期：2008-02-21 00:00:00

abstract：:Two main forms of long-term potentiation (LTP)-a prominent model for the cellular mechanism of learning and memory-have been distinguished in the mammalian brain. One requires activation of postsynaptic NMDA (N-methyl d-aspartate) receptors, whereas the other, called mossy fibre LTP, has a principal presynaptic compon...

journal_title：Nature

authors： Castillo PE,Schoch S,Schmitz F,Südhof TC,Malenka RC

更新日期：2002-01-17 00:00:00

abstract：:Non-coding apurinic/apyrimidinic (AP) sites in DNA are continually created in cells both spontaneously and by damage-specific DNA glycosylases. The biologically critical human base excision repair enzyme APE1 cleaves the DNA sugar-phosphate backbone at a position 5' of AP sites to prime DNA repair synthesis. Here we r...

journal_title：Nature

authors： Mol CD,Izumi T,Mitra S,Tainer JA

更新日期：2000-01-27 00:00:00

abstract：:Overexploitation of renewable resources today has a high cost on the welfare of future generations. Unlike in other public goods games, however, future generations cannot reciprocate actions made today. What mechanisms can maintain cooperation with the future? To answer this question, we devise a new experimental para...

journal_title：Nature

authors： Hauser OP,Rand DG,Peysakhovich A,Nowak MA

更新日期：2014-07-10 00:00:00

abstract：:Co-evolution between plants and their natural enemies is generally believed to have generated much of the Earth's biological diversity. A process analogous to co-evolution occurs in agricultural systems, in which natural enemies adapt to crop resistance introduced by breeding or genetic engineering. Because of this si...

journal_title：Nature

authors： Rausher MD

更新日期：2001-06-14 00:00:00

abstract：:The pseudogap is a partial gap in the electronic density of states that opens in the normal (non-superconducting) state of cuprate superconductors and whose origin is a long-standing puzzle. Its connection to the Mott insulator phase at low doping (hole concentration, p) remains ambiguous and its relation to the charg...

journal_title：Nature

authors： Badoux S,Tabis W,Laliberté F,Grissonnanche G,Vignolle B,Vignolles D,Béard J,Bonn DA,Hardy WN,Liang R,Doiron-Leyraud N,Taillefer L,Proust C

更新日期：2016-03-10 00:00:00

abstract：:In sexually reproducing animals, a crucial step in zygote formation is the decondensation of the fertilizing sperm nucleus into a DNA replication-competent male pronucleus. Genome-wide nucleosome assembly on paternal DNA implies the replacement of sperm chromosomal proteins, such as protamines, by maternally provided ...

journal_title：Nature

authors： Loppin B,Bonnefoy E,Anselme C,Laurençon A,Karr TL,Couble P

更新日期：2005-10-27 00:00:00

abstract：:The flow of terrestrial groundwater to the sea is an important natural component of the hydrological cycle. This process, however, does not explain the large volumes of low-salinity groundwater that are found below continental shelves. There is mounting evidence for the global occurrence of offshore fresh and brackish...

journal_title：Nature

authors： Post VE,Groen J,Kooi H,Person M,Ge S,Edmunds WM

更新日期：2013-12-05 00:00:00

abstract：:Ordinarily, photons do not interact with one another. However, atoms can be used to mediate photonic interactions1,2, raising the prospect of forming synthetic materials3 and quantum information systems4-7 from photons. One promising approach combines highly excited Rydberg atoms8-12 with the enhanced light-matter cou...

journal_title：Nature

authors： Clark LW,Jia N,Schine N,Baum C,Georgakopoulos A,Simon J

更新日期：2019-07-01 00:00:00

abstract：:Self-propagating beta-sheet-rich protein aggregates are implicated in a wide range of protein-misfolding phenomena, including amyloid diseases and prion-based inheritance. Two properties have emerged as common features of amyloids. Amyloid formation is ubiquitous: many unrelated proteins form such aggregates and even ...

journal_title：Nature

authors： Chien P,DePace AH,Collins SR,Weissman JS

更新日期：2003-08-21 00:00:00

abstract：:Morphogens act in developing tissues to control the spatial arrangement of cellular differentiation. The activity of a morphogen has generally been viewed as a concentration-dependent response to a diffusible signal, but the duration of morphogen signalling can also affect cellular responses. One such example is the m...

journal_title：Nature

authors： Dessaud E,Yang LL,Hill K,Cox B,Ulloa F,Ribeiro A,Mynett A,Novitch BG,Briscoe J

更新日期：2007-11-29 00:00:00

abstract：:Taubenberger et al. claim that the 1918 influenza virus was derived from an avian source and adapted to humans shortly before the pandemic. However, we do not believe that this conclusion, which has been widely disseminated in the popular press and in scientific journals, is supported by their phylogenetic evidence. ...

journal_title：Nature

authors： Antonovics J,Hood ME,Baker CH

更新日期：2006-04-27 00:00:00

abstract：:The mammalian central nervous system (CNS) contains a remarkable array of neural cells, each with a complex pattern of connections that together generate perceptions and higher brain functions. Here we describe a large-scale screen to create an atlas of CNS gene expression at the cellular level, and to provide a libra...

journal_title：Nature

authors： Gong S,Zheng C,Doughty ML,Losos K,Didkovsky N,Schambra UB,Nowak NJ,Joyner A,Leblanc G,Hatten ME,Heintz N

更新日期：2003-10-30 00:00:00

abstract：:Immune-challenged vertebrate females transfer specific antibodies to their offspring, but this gratuitous immunity cannot operate in invertebrates. Here we show that constitutive immune defence is enhanced in sexual offspring of the bumble-bee Bombus terrestris L. when the parental colony is immune-challenged. Our fin...

journal_title：Nature

authors： Moret Y,Schmid-Hempel P

更新日期：2001-11-29 00:00:00

abstract：:Stimuli-responsive hydrogels that undergo abrupt changes in volume in response to external stimuli such as pH, temperature and solvent composition have potential applications in biomedicine and the creation of 'intelligent' materials systems, for example as media for drug delivery, separation processes and protein imm...

journal_title：Nature

authors： Miyata T,Asami N,Uragami T

更新日期：1999-06-24 00:00:00

abstract：:Plants can have positive effects on each other. For example, the accumulation of nutrients, provision of shade, amelioration of disturbance, or protection from herbivores by some species can enhance the performance of neighbouring species. Thus the notion that the distributions and abundances of plant species are inde...

journal_title：Nature

authors： Callaway RM,Brooker RW,Choler P,Kikvidze Z,Lortie CJ,Michalet R,Paolini L,Pugnaire FI,Newingham B,Aschehoug ET,Armas C,Kikodze D,Cook BJ

更新日期：2002-06-20 00:00:00

abstract：:Haploids and double haploids are important resources for studying recessive traits and have large impacts on crop breeding, but natural haploids are rare in animals. Mammalian haploids are restricted to germline cells and are occasionally found in tumours with massive chromosome loss. Recent success in establishing ha...

journal_title：Nature

authors： Li W,Shuai L,Wan H,Dong M,Wang M,Sang L,Feng C,Luo GZ,Li T,Li X,Wang L,Zheng QY,Sheng C,Wu HJ,Liu Z,Liu L,Wang L,Wang XJ,Zhao XY,Zhou Q

更新日期：2012-10-18 00:00:00

abstract：:The taxonomy of a parasite can be an important guide to its pathogenic characteristics. A wide range of anatomical, biochemical and behavioural tests is now being developed to define different strains and subspecies of the main tropical parasites. ...

journal_title：Nature

authors： Godfrey DG

更新日期：1978-06-22 00:00:00

abstract：:The primary function of the adenovirus E1A-region genes is to activate other adenoviral genes during a permissive viral infection by modifying the host cell transcriptional apparatus. Host cell immortalization, or transformation by the whole adenoviral early region, presumably results as a consequence of these modific...

journal_title：Nature

authors： Webster KA,Muscat GE,Kedes L

更新日期：1988-04-07 00:00:00

abstract：:During cellular translation of messenger RNAs by ribosomes, the translation apparatus sometimes pauses or stalls at the elongation and termination steps. With the exception of programmed stalling, which is usually used by cells for regulatory purposes, ribosomes stalled on mRNAs need to be terminated and recycled to m...

journal_title：Nature

authors： Ma C,Kurita D,Li N,Chen Y,Himeno H,Gao N

更新日期：2017-01-26 00:00:00

abstract：:B lymphocytes originate from pluripotential haematopoietic stem cells and differentiate into immunoglobulin (Ig)-producing cells. B-cell lineage differentiation is accompanied by two types of immunoglobulin gene rearrangements--rearrangement of V, D and J gene segments to create a functional V gene and rearrangement o...

journal_title：Nature

authors： Sugiyama H,Akira S,Kikutani H,Kishimoto S,Yamamura Y,Kishimoto T

更新日期：1983-06-30 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