Plus çà change.

abstract：:Miocene hominoid material is very scarce and has previously only been reported as cranial fragments in the Old World. Here we describe a new specimen of Ouranopithecus macedoniensis, which consists of the right part of the face of an adult male with a portion of the frontal bone, a portion of the left part of the face...

journal_title：Nature

authors： de Bonis L,Bouvrain G,Geraads D,Koufos G

更新日期：1990-06-21 00:00:00

abstract：:In the absence of extraneously added template, standard preparations of Q beta replicase spontaneously synthesize RNA in vitro, possibly as a result of RNA contamination. Using special enzyme purifications, Sumper and Luce presented evidence that self-replicating RNA not present ab initio can grow out of 'template-fre...

journal_title：Nature

authors： Biebricher CK,Eigen M,Luce R

更新日期：1986-05-01 00:00:00

abstract：:The neocortex of the adult brain consists of neurons and glia that are generated by precursor cells of the embryonic ventricular zone. In general, glia are generated after neurons during development, but radial glia are an exception to this rule. Radial glia are generated before neurogenesis and guide neuronal migrati...

journal_title：Nature

authors： Noctor SC,Flint AC,Weissman TA,Dammerman RS,Kriegstein AR

更新日期：2001-02-08 00:00:00

abstract：:The macronutrient phosphorus is thought to limit primary productivity in the oceans on geological timescales. Although there has been a sustained effort to reconstruct the dynamics of the phosphorus cycle over the past 3.5 billion years, it remains uncertain whether phosphorus limitation persisted throughout Earth's h...

journal_title：Nature

authors： Reinhard CT,Planavsky NJ,Gill BC,Ozaki K,Robbins LJ,Lyons TW,Fischer WW,Wang C,Cole DB,Konhauser KO

更新日期：2017-01-19 00:00:00

abstract：:A conserved heterotrimeric membrane protein complex, the Sec61 or SecY complex, forms a protein-conducting channel, allowing polypeptides to be transferred across or integrated into membranes. We report the crystal structure of the complex from Methanococcus jannaschii at a resolution of 3.2 A. The structure suggests ...

journal_title：Nature

authors： Van den Berg B,Clemons WM Jr,Collinson I,Modis Y,Hartmann E,Harrison SC,Rapoport TA

更新日期：2004-01-01 00:00:00

abstract：:Advances in genetics and genomics have fuelled a revolution in discovery-based, or hypothesis-generating, research that provides a powerful complement to the more directly hypothesis-driven molecular, cellular and systems neuroscience. Genetic and functional genomic studies have already yielded important insights into...

journal_title：Nature

authors： Geschwind DH,Konopka G

更新日期：2009-10-15 00:00:00

abstract：:C-type (Ca(2+)-dependent) animal lectins such as mannose-binding proteins mediate many cell-surface carbohydrate-recognition events. The crystal structure at 1.7 A resolution of the carbohydrate-recognition domain of rat mannose-binding protein complexed with an oligomannose asparaginyl-oligosaccharide reveals that Ca...

journal_title：Nature

authors： Weis WI,Drickamer K,Hendrickson WA

更新日期：1992-11-12 00:00:00

abstract：:Transposable elements are viewed as 'selfish genetic elements', yet they contribute to gene regulation and genome evolution in diverse ways. More than half of the human genome consists of transposable elements. Alu elements belong to the short interspersed nuclear element (SINE) family of repetitive elements, and with...

journal_title：Nature

authors： Aktaş T,Avşar Ilık İ,Maticzka D,Bhardwaj V,Pessoa Rodrigues C,Mittler G,Manke T,Backofen R,Akhtar A

更新日期：2017-04-06 00:00:00

abstract：:The thymus has two important roles in controlling the specificity of T lymphocytes. First, T cells differentiating in the thymus are rendered tolerant of 'self' antigens, particularly antigens encoded by the major histocompatibility complex, the H-2 complex in mice. Second, the thymus imbues T cells with the property ...

journal_title：Nature

authors： Lo D,Sprent J

更新日期：1986-02-20 00:00:00

abstract：:Understanding exotic forms of magnetism in quantum mechanical systems is a central goal of modern condensed matter physics, with implications for systems ranging from high-temperature superconductors to spintronic devices. Simulating magnetic materials in the vicinity of a quantum phase transition is computationally i...

journal_title：Nature

authors： Simon J,Bakr WS,Ma R,Tai ME,Preiss PM,Greiner M

更新日期：2011-04-21 00:00:00

abstract：:The NMDA (N-methyl-D-aspartate) receptor transduces the binding of glutamate and glycine, coupling it to the opening of a calcium-permeable ion channel 1 . Owing to the lack of high-resolution structural studies of the NMDA receptor, the mechanism by which ion-channel blockers occlude ion permeation is not well unders...

journal_title：Nature

authors： Song X,Jensen MØ,Jogini V,Stein RA,Lee CH,Mchaourab HS,Shaw DE,Gouaux E

更新日期：2018-04-01 00:00:00

abstract：:Although stars form from clouds of gas and dust, there are insignificant amounts of gas around ordinary (Sun-like) stars. This suggests that hydrogen and helium, the primary constituents of planets such as Jupiter and Saturn, are not easily retained in orbit as a star matures. The gas-giant planets in the Solar System...

journal_title：Nature

authors： Zuckerman B,Forveille T,Kastner JH

更新日期：1995-02-09 00:00:00

abstract：:The ice-rich surface of the jovian satellite Europa is sparsely cratered, suggesting that this moon might be geologically active today. Moreover, models of the satellite's interior indicate that tidal interactions with Jupiter might produce enough heat to maintain a subsurface liquid water layer. But the mechanisms of...

journal_title：Nature

authors： Pappalardo RT,Head JW,Greeley R,Sullivan RJ,Pilcher C,Schubert G,Moore WB,Carr MH,Moore JM,Belton MJ,Goldsby DL

更新日期：1998-01-22 00:00:00

abstract：:Topological insulators-materials that are insulating in the bulk but allow electrons to flow on their surface-are striking examples of materials in which topological invariants are manifested in robustness against perturbations such as defects and disorder1. Their most prominent feature is the emergence of edge states...

journal_title：Nature

authors： Klembt S,Harder TH,Egorov OA,Winkler K,Ge R,Bandres MA,Emmerling M,Worschech L,Liew TCH,Segev M,Schneider C,Höfling S

更新日期：2018-10-01 00:00:00

abstract：:Phytoplankton size structure is acknowledged as a fundamental property determining energy flow through 'microbial' or 'herbivore' pathways. The balance between these two pathways determines the ability of the ecosystem to recycle carbon within the upper layer or to export it to the ocean interior. Small cells are usua...

journal_title：Nature

authors： Rodríguez J,Tintoré J,Allen JT,Blanco JM,Gomis D,Reul A,Ruiz J,Rodríguez V,Echevarría F,Jiménez-Gómez F

更新日期：2001-03-15 00:00:00

abstract：:A plume of water vapour escapes from fissures crossing the south polar region of the Saturnian moon Enceladus. Tidal deformation of a thin surface crust above an internal ocean could result in tensile and compressive stresses that would affect the width of the fissures; therefore, the quantity of water vapour released...

journal_title：Nature

authors： Hansen CJ,Esposito LW,Stewart AI,Meinke B,Wallis B,Colwell JE,Hendrix AR,Larsen K,Pryor W,Tian F

更新日期：2008-11-27 00:00:00

abstract：:Change history: In Fig. 1b and c of this Letter, the inset times in the DIC and GFP microscopy images should be in minutes ('min') instead of seconds ('s'). This has not been corrected online. ...

journal_title：Nature

authors： Stewart MP,Helenius J,Toyoda Y,Ramanathan SP,Muller DJ,Hyman AA

更新日期：2019-07-01 00:00:00

abstract：:Mature cortical pyramidal neurons receive excitatory inputs onto small protrusions emanating from their dendrites called spines. Spines undergo activity-dependent remodelling, stabilization and pruning during development, and similar structural changes can be triggered by learning and changes in sensory experiences. H...

journal_title：Nature

authors： Kwon HB,Sabatini BL

更新日期：2011-06-02 00:00:00

abstract：:At one time the synthetic chemist's last resort, reactions catalysed by transition metals are now the preferred method for synthesizing many types of organic molecule. A recent success in this type of catalysis is the discovery of reactions that form bonds between carbon and heteroatoms (such as nitrogen, oxygen, sulp...

journal_title：Nature

authors： Hartwig JF

更新日期：2008-09-18 00:00:00

abstract：:Protein chains coil into alpha-helices and beta-sheet structures. Knowing the timescales and mechanism of formation of these basic structural elements is essential for understanding how proteins fold. For the past 40 years, alpha-helix formation has been extensively investigated in synthetic and natural peptides, incl...

journal_title：Nature

authors： Muñoz V,Thompson PA,Hofrichter J,Eaton WA

更新日期：1997-11-13 00:00:00

abstract：:For a system at a temperature of absolute zero, all thermal fluctuations are frozen out, while quantum fluctuations prevail. These microscopic quantum fluctuations can induce a macroscopic phase transition in the ground state of a many-body system when the relative strength of two competing energy terms is varied acro...

journal_title：Nature

authors： Greiner M,Mandel O,Esslinger T,Hänsch TW,Bloch I

更新日期：2002-01-03 00:00:00

abstract：:Storing and retrieving a quantum state of light on demand, without corrupting the information it carries, is an important challenge in the field of quantum information processing. Classical measurement and reconstruction strategies for storing light must necessarily destroy quantum information as a consequence of the ...

journal_title：Nature

authors： Hedges MP,Longdell JJ,Li Y,Sellars MJ

更新日期：2010-06-24 00:00:00

abstract：:The beta, gamma-crystallins form a class of homologous proteins in the eye lens. Each gamma-crystallin comprises four topologically equivalent, Greek key motifs; pairs of motifs are organized around a local dyad to give domains and two similar domains are in turn related by a further local dyad. Sequence comparisons a...

journal_title：Nature

authors： Bax B,Lapatto R,Nalini V,Driessen H,Lindley PF,Mahadevan D,Blundell TL,Slingsby C

更新日期：1990-10-25 00:00:00

abstract：:Sleep is one of the few major whole-organ phenomena for which no function and no underlying mechanism have been conclusively demonstrated. Sleep could result from global changes in the brain during wakefulness or it could be regulated by specific loci that recruit the rest of the brain into the electrical and metaboli...

journal_title：Nature

authors： Joiner WJ,Crocker A,White BH,Sehgal A

更新日期：2006-06-08 00:00:00

abstract：:Geochemical data from ancient sedimentary successions provide evidence for the progressive evolution of Earth's atmosphere and oceans. Key stages in increasing oxygenation are postulated for the Palaeoproterozoic era (∼2.3 billion years ago, Gyr ago) and the late Proterozoic eon (about 0.8 Gyr ago), with the latter im...

journal_title：Nature

authors： Parnell J,Boyce AJ,Mark D,Bowden S,Spinks S

更新日期：2010-11-11 00:00:00

abstract：:Elongation factor Tu is present in a fourfold excess over the amount seemingly involved in protein synthesis. It is identical to a major protein which we have found associated with the plasma membrane. The possibility of a specific role in that location is considered. ...

journal_title：Nature

authors： Jacobson GR,Rosenbusch JP

更新日期：1976-05-06 00:00:00

abstract：:Water striders Gerridae are insects of characteristic length 1 cm and weight 10 dynes that reside on the surface of ponds, rivers, and the open ocean. Their weight is supported by the surface tension force generated by curvature of the free surface, and they propel themselves by driving their central pair of hydrophob...

journal_title：Nature

authors： Hu DL,Chan B,Bush JW

更新日期：2003-08-07 00:00:00

abstract：:Large-conductance Ca(2+)-gated K(+) (BK) channels are essential for many biological processes such as smooth muscle contraction and neurotransmitter release. This group of channels can be activated synergistically by both voltage and intracellular Ca(2+), with the large carboxy-terminal intracellular portion being res...

journal_title：Nature

authors： Wu Y,Yang Y,Ye S,Jiang Y

更新日期：2010-07-15 00:00:00

abstract：:Reinforcement learning models postulate that neurons that release dopamine encode information about action and action outcome, and provide a teaching signal to striatal spiny projection neurons in the form of dopamine release1. Dopamine is thought to guide learning via dynamic and differential modulation of protein ki...

journal_title：Nature

authors： Lee SJ,Lodder B,Chen Y,Patriarchi T,Tian L,Sabatini BL

更新日期：2020-12-23 00:00:00

abstract：:How environmental cues regulate adult stem cell and cancer cell activity through surface receptors is poorly understood. Angiopoietin-like proteins (ANGPTLs), a family of seven secreted glycoproteins, are known to support the activity of haematopoietic stem cells (HSCs) in vitro and in vivo. ANGPTLs also have importan...

journal_title：Nature

authors： Zheng J,Umikawa M,Cui C,Li J,Chen X,Zhang C,Huynh H,Kang X,Silvany R,Wan X,Ye J,Cantó AP,Chen SH,Wang HY,Ward ES,Zhang CC

更新日期：2012-05-30 00:00:00