Observational evidence for interhemispheric hydroxyl-radical parity.

abstract：:If not properly processed and repaired, DNA double-strand breaks (DSBs) can give rise to deleterious chromosome rearrangements, which could ultimately lead to the tumour phenotype. DSB ends are resected in a 5' to 3' fashion in cells, to yield single-stranded DNA (ssDNA) for the recruitment of factors critical for DNA...

journal_title：Nature

authors： Niu H,Chung WH,Zhu Z,Kwon Y,Zhao W,Chi P,Prakash R,Seong C,Liu D,Lu L,Ira G,Sung P

更新日期：2010-09-02 00:00:00

abstract：:Many tyrosine kinases, including the receptors for hormones such as epidermal growth factor (EGF), nerve growth factor and insulin, transmit intracellular signals through Ras proteins. Ligand binding to such receptors stimulates Ras guanine-nucleotide-exchange activity and increases the level of GTP-bound Ras, suggest...

journal_title：Nature

authors： Rozakis-Adcock M,Fernley R,Wade J,Pawson T,Bowtell D

更新日期：1993-05-06 00:00:00

abstract：:The study of language origin and divergence is important for understanding the history of human populations and their cultures. The Sino-Tibetan language family is the second largest in the world after Indo-European, and there is a long-running debate about its phylogeny and the time depth of its original divergence1....

journal_title：Nature

authors： Zhang M,Yan S,Pan W,Jin L

更新日期：2019-05-01 00:00:00

abstract：:Chemokines are chemotactic cytokines that activate and direct the migration of leukocytes. There are two subfamilies, the CXC and the CC chemokines. We recently found that the CXC-chemokine stromal cell-derived factor-1 (SDF-1) is a highly efficacious lymphocyte chemoattractant. Chemokines act on responsive leukocyte ...

journal_title：Nature

authors： Bleul CC,Farzan M,Choe H,Parolin C,Clark-Lewis I,Sodroski J,Springer TA

更新日期：1996-08-29 00:00:00

abstract：:Villin is an actin-binding protein of relative molecular mass (Mr) 95,000 found in the core bundle of microfilaments in brush border microvilli from intestine. In physiological calcium concentrations (less than 1 microM), villin crosslinks actin filaments into bundles. However, in free calcium concentrations (greater ...

journal_title：Nature

authors： Matsudaira P,Jakes R,Walker JE

更新日期：1985-05-16 00:00:00

abstract：:The kidney has been widely exploited as a model system for the study of tissue inductions regulating vertebrate organogenesis. Kidney development is initiated by the ingrowth of the Wolfian duct-derived ureteric bud into the presumptive kidney mesenchyme. In response to a signal from the ureter, mesenchymal cells cond...

journal_title：Nature

authors： Stark K,Vainio S,Vassileva G,McMahon AP

更新日期：1994-12-15 00:00:00

abstract：:Vaccines rarely provide full protection from disease. Nevertheless, partially effective (imperfect) vaccines may be used to protect both individuals and whole populations. We studied the potential impact of different types of imperfect vaccines on the evolution of pathogen virulence (induced host mortality) and the co...

journal_title：Nature

authors： Gandon S,Mackinnon MJ,Nee S,Read AF

更新日期：2001-12-13 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：:The origins of religion and of complex societies represent evolutionary puzzles1-8. The 'moralizing gods' hypothesis offers a solution to both puzzles by proposing that belief in morally concerned supernatural agents culturally evolved to facilitate cooperation among strangers in large-scale societies9-13. Although pr...

journal_title：Nature

authors： Whitehouse H,François P,Savage PE,Currie TE,Feeney KC,Cioni E,Purcell R,Ross RM,Larson J,Baines J,Ter Haar B,Covey A,Turchin P

更新日期：2019-04-01 00:00:00

abstract：:Transposable elements from prokaryotic and eukaryotic organisms are discrete DNA segments bounded by inverted or directly repeated sequences that insert into non-homologous DNA in a reaction that is independent of the general recombination functions of the host. The mechanisms proposed generally involve a staggered do...

journal_title：Nature

authors： Murphy E,Löfdahl S

更新日期：1984-01-19 00:00:00

abstract：:Ultrathin ferroelectric materials could potentially enable low-power perovskite ferroelectric tetragonality logic and nonvolatile memories1,2. As ferroelectric materials are made thinner, however, the ferroelectricity is usually suppressed. Size effects in ferroelectrics have been thoroughly investigated in perovskite...

journal_title：Nature

authors： Cheema SS,Kwon D,Shanker N,Dos Reis R,Hsu SL,Xiao J,Zhang H,Wagner R,Datar A,McCarter MR,Serrao CR,Yadav AK,Karbasian G,Hsu CH,Tan AJ,Wang LC,Thakare V,Zhang X,Mehta A,Karapetrova E,Chopdekar RV,Shafer P,Arenh

更新日期：2020-04-01 00:00:00

abstract：:Many proteins are expressed in distinct embryonic and adult forms. However, in most cases we do not know why the embryonic form of proteins is required. This question can be readily addressed for the acetylcholine receptor (AChR) because developmentally specified modifications of this ligand-gated ion channel can be d...

journal_title：Nature

authors： Jaramillo F,Vicini S,Schuetze SM

更新日期：1988-09-01 00:00:00

abstract：:The RNA polymerase II large subunit contains an essential carboxy-terminal domain (CTD) believed to be involved in the response to regulators during transcription initiation. The CTD is phosphorylated on a portion of RNA polymerase II molecules in vivo and it can be phosphorylated by the general transcription factor T...

journal_title：Nature

authors： Serizawa H,Mäkelä TP,Conaway JW,Conaway RC,Weinberg RA,Young RA

更新日期：1995-03-16 00:00:00

abstract：:Efficient long-distance quantum teleportation is crucial for quantum communication and quantum networking schemes. Here we describe the high-fidelity teleportation of photons over a distance of 600 metres across the River Danube in Vienna, with the optimal efficiency that can be achieved using linear optics. Our resul...

journal_title：Nature

authors： Ursin R,Jennewein T,Aspelmeyer M,Kaltenbaek R,Lindenthal M,Walther P,Zeilinger A

更新日期：2004-08-19 00:00:00

abstract：:Blazars are active galactic nuclei, which are powerful sources of radiation whose central engine is located in the core of the host galaxy. Blazar emission is dominated by non-thermal radiation from a jet that moves relativistically towards us, and therefore undergoes Doppler beaming. This beaming causes flux enhancem...

journal_title：Nature

authors： Raiteri CM,Villata M,Acosta-Pulido JA,Agudo I,Arkharov AA,Bachev R,Baida GV,Benítez E,Borman GA,Boschin W,Bozhilov V,Butuzova MS,Calcidese P,Carnerero MI,Carosati D,Casadio C,Castro-Segura N,Chen WP,Damljanovic G,D'

更新日期：2017-12-21 00:00:00

abstract：: ...

journal_title：Nature

authors： Beekes M,Mielke M,Thomzig A

更新日期：2019-01-01 00:00:00

abstract：:Deltas and alluvial fans preserved on the surface of Mars provide an important record of surface water flow. Understanding how surface water flow could have produced the observed morphology is fundamental to understanding the history of water on Mars. To date, morphological studies have provided only minimum time esti...

journal_title：Nature

authors： Kraal ER,van Dijk M,Postma G,Kleinhans MG

更新日期：2008-02-21 00:00:00

abstract：:There is increasing evidence for the process of sympatric speciation, in which reproductive isolation of species occurs without physical isolation. Theoretical models have focused on disruptive natural selection as the crucial pressure for splitting a species. Here we report the theoretical finding that sympatric spec...

journal_title：Nature

authors： Higashi M,Takimoto G,Yamamura N

更新日期：1999-12-02 00:00:00

abstract：:A multitude of heptahelical receptors use heterotrimeric G proteins to transduce signals to specific effector target molecules. The G protein transducin, Gt, couples photon-activated rhodopsin with the effector cyclic GMP phosophodiesterase (PDE) in the vertebrate phototransduction cascade. The interactions of the Gt ...

journal_title：Nature

authors： Slep KC,Kercher MA,He W,Cowan CW,Wensel TG,Sigler PB

更新日期：2001-02-22 00:00:00

abstract：:Eukaryotes and archaea use a protease called the proteasome that has an integral role in maintaining cellular function through the selective degradation of proteins. Proteolysis occurs in a barrel-shaped 20S core particle, which in Thermoplasma acidophilum is built from four stacked homoheptameric rings of subunits, α...

journal_title：Nature

authors： Ruschak AM,Religa TL,Breuer S,Witt S,Kay LE

更新日期：2010-10-14 00:00:00

abstract：:Online hate and extremist narratives have been linked to abhorrent real-world events, including a current surge in hate crimes1-6 and an alarming increase in youth suicides that result from social media vitriol7; inciting mass shootings such as the 2019 attack in Christchurch, stabbings and bombings8-11; recruitment o...

journal_title：Nature

authors： Johnson NF,Leahy R,Restrepo NJ,Velasquez N,Zheng M,Manrique P,Devkota P,Wuchty S

更新日期：2019-09-01 00:00:00

abstract：:The innate immune system is critical for the early detection of invading pathogens and for initiating cellular host defence countermeasures, which include the production of type I interferon (IFN). However, little is known about how the innate immune system is galvanized to respond to DNA-based microbes. Here we show ...

journal_title：Nature

authors： Ishikawa H,Ma Z,Barber GN

更新日期：2009-10-08 00:00:00

abstract：:Targeting of proteins to appropriate subcellular compartments is a crucial process in all living cells. Secretory and membrane proteins usually contain an amino-terminal signal peptide, which is recognized by the signal recognition particle (SRP) when nascent polypeptide chains emerge from the ribosome. The SRP-riboso...

journal_title：Nature

authors： Janda CY,Li J,Oubridge C,Hernández H,Robinson CV,Nagai K

更新日期：2010-05-27 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：:The inner ear is capable of highly selective frequency discrimination. This is achieved not only by the travelling wave of the basilar membrane in the cochlear partition, but also by the active participation of nonlinear and vulnerable elements that enhance frequency selectivity. It has been shown that isolated mammal...

journal_title：Nature

authors： Brundin L,Flock A,Canlon B

更新日期：1989-12-14 00:00:00

abstract：:The variable regions of mouse kappa (kappa) chains are coded for by multiple variable (V) gene segments and multiple joining (J) gene segments. The V kappa gene segments code for residues 1 to 95; the J kappa gene segments code for residues 96 to 108 (refs 1-3). This gene organisation is similar to that encoding the V...

journal_title：Nature

authors： Weigert M,Perry R,Kelley D,Hunkapiller T,Schilling J,Hood L

更新日期：1980-01-31 00:00:00

abstract：:The ability to differentiate stimuli predicting positive or negative outcomes is critical for survival, and perturbations of emotional processing underlie many psychiatric disease states. Synaptic plasticity in the basolateral amygdala complex (BLA) mediates the acquisition of associative memories, both positive and n...

journal_title：Nature

authors： Namburi P,Beyeler A,Yorozu S,Calhoon GG,Halbert SA,Wichmann R,Holden SS,Mertens KL,Anahtar M,Felix-Ortiz AC,Wickersham IR,Gray JM,Tye KM

更新日期：2015-04-30 00:00:00

abstract：:Measurements of the cosmic microwave background (CMB) radiation can reveal with remarkable precision the conditions of the Universe when it was approximately 400,000 years old. The three most fundamental properties of the CMB are its frequency spectrum (which determines the temperature), and the fluctuations in both t...

journal_title：Nature

authors： Leitch EM,Kovac JM,Pryke C,Carlstrom JE,Halverson NW,Holzapfel WL,Dragovan M,Reddall B,Sandberg ES

更新日期：2002-12-19 00:00:00

abstract：:The mechanism whereby eukaryotic pre-messenger RNAs are polyadenylated is unknown. Most models for polyadenylation invoke cleavage of precursor transcripts at the site of poly(A) addition followed by polymerization of A residues by poly(A) polymerase. Analysis of the sequences surrounding poly(A) addition sites has id...

journal_title：Nature

authors： Berget SM

更新日期：1984-05-10 00:00:00

abstract：:Double-stranded RNAs (dsRNAs) induce post-transcriptional gene silencing in several species of animal and plant. In plants, dsRNAs targeted to CpG islands within a promoter can also induce RNA-directed DNA methylation; however, it remains unclear whether gene silencing mediated by DNA methylation can be induced by dsR...

journal_title：Nature

authors： Kawasaki H,Taira K

更新日期：2004-09-09 00:00:00