Localized sex in bacteria.

abstract：:Unlike the electroweak sector of the standard model of particle physics, quantum chromodynamics (QCD) is surprisingly symmetric under time reversal. As there is no obvious reason for QCD being so symmetric, this phenomenon poses a theoretical problem, often referred to as the strong CP problem. The most attractive sol...

journal_title：Nature

authors： Borsanyi S,Fodor Z,Guenther J,Kampert KH,Katz SD,Kawanai T,Kovacs TG,Mages SW,Pasztor A,Pittler F,Redondo J,Ringwald A,Szabo KK

更新日期：2016-11-03 00:00:00

abstract：:Diatoms dominate the biomass of phytoplankton in nutrient-rich conditions and form the basis of some of the world's most productive marine food webs. The diatom nuclear genome contains genes with bacterial and plastid origins as well as genes of the secondary endosymbiotic host (the exosymbiont), yet little is known a...

journal_title：Nature

authors： Allen AE,Dupont CL,Oborník M,Horák A,Nunes-Nesi A,McCrow JP,Zheng H,Johnson DA,Hu H,Fernie AR,Bowler C

更新日期：2011-05-12 00:00:00

abstract：:The relationship between the semantic processing of words and of pictures is a matter of debate among cognitive scientists. We studied the functional anatomy of such processing by using positron-emission tomography (PET). We contrasted activity during two semantic tasks (probing knowledge of associations between conce...

journal_title：Nature

authors： Vandenberghe R,Price C,Wise R,Josephs O,Frackowiak RS

更新日期：1996-09-19 00:00:00

abstract：:Occupancy of the T-cell antigen receptor is insufficient to induce T-cell activation optimally; a second co-stimulatory signal is required. Exposure of T-cell clones to complexes of antigen with major histocompatibility complex molecules in the absence of the co-stimulatory signal induces a state of clonal anergy. Thi...

journal_title：Nature

authors： Harding FA,McArthur JG,Gross JA,Raulet DH,Allison JP

更新日期：1992-04-16 00:00:00

abstract：:Vertebrate erythroid cells contain a tissue-specific transcription factor referred to as Eryf 1 (ref. 1), GF-1 (ref. 2) or NF-E1 (ref. 3), for which binding sites are widely distributed in the promoters and enhancers of the globin gene family, and of other erythroid-specific genes. Aberrant binding of the human factor...

journal_title：Nature

authors： Trainor CD,Evans T,Felsenfeld G,Boguski MS

更新日期：1990-01-04 00:00:00

abstract：:The biogenic amine transporters (BATs) regulate endogenous neurotransmitter concentrations and are targets for a broad range of therapeutic agents including selective serotonin reuptake inhibitors (SSRIs), serotonin-noradrenaline reuptake inhibitors (SNRIs) and tricyclic antidepressants (TCAs). Because eukaryotic BATs...

journal_title：Nature

authors： Wang H,Goehring A,Wang KH,Penmatsa A,Ressler R,Gouaux E

更新日期：2013-11-07 00:00:00

abstract：:High-pressure transitions are thought to modify hydrogen molecules to a molecular metallic solid and finally to an atomic metal1, which is predicted to have exotic physical properties and the topology of a two-component (electron and proton) superconducting superfluid condensate2,3. Therefore, understanding such trans...

journal_title：Nature

authors： Ji C,Li B,Liu W,Smith JS,Majumdar A,Luo W,Ahuja R,Shu J,Wang J,Sinogeikin S,Meng Y,Prakapenka VB,Greenberg E,Xu R,Huang X,Yang W,Shen G,Mao WL,Mao HK

更新日期：2019-09-01 00:00:00

abstract：:A membrane receptor protein for asialoglycoproteins induces voltage-dependent increases in ion conductance across a lipid bilayer, probably reflecting penetration of the protein into the bilayer towards an electrically positive pole. In the presence of specific ligand for the receptor, this penetration leads to a 'tra...

journal_title：Nature

authors： Blumenthal R,Klausner RD,Weinstein JN

更新日期：1980-11-27 00:00:00

abstract：:In this Letter, the statement 'I.I. and A.B. performed computations at the NCI Australia' was missing from the Acknowledgements section. This has been corrected online. ...

journal_title：Nature

authors： Sainadh US,Xu H,Wang X,Atia-Tul-Noor A,Wallace WC,Douguet N,Bray A,Ivanov I,Bartschat K,Kheifets A,Sang RT,Litvinyuk IV

更新日期：2019-05-01 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：:A decision is a commitment to a proposition or plan of action based on evidence and the expected costs and benefits associated with the outcome. Progress in a variety of fields has led to a quantitative understanding of the mechanisms that evaluate evidence and reach a decision. Several formalisms propose that a repre...

journal_title：Nature

authors： Resulaj A,Kiani R,Wolpert DM,Shadlen MN

更新日期：2009-09-10 00:00:00

abstract：:The separation of cells into populations that do not intermix, termed compartments, is a fundamental organizing principle during development. Dorsal-ventral compartmentalization of the Drosophila wing is regulated downstream of the apterous (ap) gene, which encodes a transcription factor that specifies dorsal wing fat...

journal_title：Nature

authors： Rauskolb C,Correia T,Irvine KD

更新日期：1999-09-30 00:00:00

abstract：:Aneuploidy, referring here to genome contents characterized by abnormal numbers of chromosomes, has been associated with developmental defects, cancer and adaptive evolution in experimental organisms. However, it remains unresolved how aneuploidy impacts gene expression and whether aneuploidy could directly bring abou...

journal_title：Nature

authors： Pavelka N,Rancati G,Zhu J,Bradford WD,Saraf A,Florens L,Sanderson BW,Hattem GL,Li R

更新日期：2010-11-11 00:00:00

abstract：:The process of DNA recognition by the activated form of the restriction endonuclease from E. coli K involves three enzyme-DNA complexes which can be differentiated experimentally. These are: an initial complex formed at a nonspecific site; a recognition complex involving the host specificity site; and a cleavage compl...

journal_title：Nature

authors： Yuan R,Bickle TA,Ebbers W,Brack C

更新日期：1975-08-14 00:00:00

abstract：:The ability of collapsing (cavitating) bubbles to focus and concentrate energy, forces and stresses is at the root of phenomena such as cavitation damage, sonochemistry or sonoluminescence. In a biomedical context, ultrasound-driven microbubbles have been used to enhance contrast in ultrasonic images. The observation ...

journal_title：Nature

authors： Marmottant P,Hilgenfeldt S

更新日期：2003-05-08 00:00:00

abstract：: ...

journal_title：Nature

authors：

更新日期：2018-11-01 00:00:00

abstract：:The metabotropic glutamate receptors (mGluRs) are key receptors in the modulation of excitatory synaptic transmission in the central nervous system. Here we have determined three different crystal structures of the extracellular ligand-binding region of mGluR1--in a complex with glutamate and in two unliganded forms. ...

journal_title：Nature

authors： Kunishima N,Shimada Y,Tsuji Y,Sato T,Yamamoto M,Kumasaka T,Nakanishi S,Jingami H,Morikawa K

更新日期：2000-10-26 00:00:00

abstract：:Injury causes a systemic inflammatory response syndrome (SIRS) that is clinically much like sepsis. Microbial pathogen-associated molecular patterns (PAMPs) activate innate immunocytes through pattern recognition receptors. Similarly, cellular injury can release endogenous 'damage'-associated molecular patterns (DAMPs...

journal_title：Nature

authors： Zhang Q,Raoof M,Chen Y,Sumi Y,Sursal T,Junger W,Brohi K,Itagaki K,Hauser CJ

更新日期：2010-03-04 00:00:00

abstract：:The origin of eukaryotes stands as a major conundrum in biology. Current evidence indicates that the last eukaryotic common ancestor already possessed many eukaryotic hallmarks, including a complex subcellular organization. In addition, the lack of evolutionary intermediates challenges the elucidation of the relative ...

journal_title：Nature

authors： Pittis AA,Gabaldón T

更新日期：2016-03-03 00:00:00

abstract：:About one-third of the carbon dioxide (CO(2)) released into the atmosphere as a result of human activity has been absorbed by the oceans, where it partitions into the constituent ions of carbonic acid. This leads to ocean acidification, one of the major threats to marine ecosystems and particularly to calcifying organ...

journal_title：Nature

authors： Beaufort L,Probert I,de Garidel-Thoron T,Bendif EM,Ruiz-Pino D,Metzl N,Goyet C,Buchet N,Coupel P,Grelaud M,Rost B,Rickaby RE,de Vargas C

更新日期：2011-08-03 00:00:00

abstract：:Methane is a potent greenhouse gas that is produced in significant quantities by aerobic marine organisms. These bacteria apparently catalyse the formation of methane through the cleavage of the highly unreactive carbon-phosphorus bond in methyl phosphonate (MPn), but the biological or terrestrial source of this compo...

journal_title：Nature

authors： Kamat SS,Williams HJ,Dangott LJ,Chakrabarti M,Raushel FM

更新日期：2013-05-02 00:00:00

abstract：:Genomic imprinting is an allele-specific gene expression system that is important for mammalian development and function. The molecular basis of genomic imprinting is allele-specific DNA methylation. Although it is well known that the de novo DNA methyltransferases Dnmt3a and Dnmt3b are responsible for the establishme...

journal_title：Nature

authors： Yamaguchi S,Shen L,Liu Y,Sendler D,Zhang Y

更新日期：2013-12-19 00:00:00

abstract：:It is generally accepted that the oscillatory beating characteristic of sperm flagella is the result of an ATP-induced sliding between the doublet microtubules of the flagellar axoneme, with these longitudinal forces being converted into a lateral bending moment by resistive components of the structure that limit the ...

journal_title：Nature

authors： Gibbons IR,Shingyoji C,Murakami A,Takahashi K

更新日期：1987-01-22 00:00:00

abstract：:When present in single-stranded DNA, palindromic or quasi-palindromic sequences have the potential to form complex secondary structures, including hairpins, which may facilitate interstrand misalignment of direct repeats and be responsible for diverse types of replication-based mutations, including deletions, addition...

journal_title：Nature

authors： Trinh TQ,Sinden RR

更新日期：1991-08-08 00:00:00

abstract：:Mycobacterium tuberculosis (Mtb) is the leading cause of death from infection worldwide1. The only available vaccine, BCG (Bacillus Calmette-Guérin), is given intradermally and has variable efficacy against pulmonary tuberculosis, the major cause of mortality and disease transmission1,2. Here we show that intravenous ...

journal_title：Nature

authors： Darrah PA,Zeppa JJ,Maiello P,Hackney JA,Wadsworth MH 2nd,Hughes TK,Pokkali S,Swanson PA 2nd,Grant NL,Rodgers MA,Kamath M,Causgrove CM,Laddy DJ,Bonavia A,Casimiro D,Lin PL,Klein E,White AG,Scanga CA,Shalek AK,Roede

更新日期：2020-01-01 00:00:00

abstract：:The importance of the dopaminergic system in brain function has been emphasized by its association with neurological and psychiatric disorders such as Parkinson's disease and schizophrenia. On the basis of their biochemical and pharmacological characteristics, dopamine receptors are classified into D1 and D2 subtypes....

journal_title：Nature

authors： Zhou QY,Grandy DK,Thambi L,Kushner JA,Van Tol HH,Cone R,Pribnow D,Salon J,Bunzow JR,Civelli O

更新日期：1990-09-06 00:00:00

abstract：:Amyloid beta-protein (AP) is a peptide of relative molecular mass (Mr) 42,000 found in the senile plaques, cerebrovascular amyloid deposits, and neurofibrillary tangles of patients with Alzheimer's disease and Down's syndrome (trisomy 21). Recent molecular genetic evidence has indicated that AP is encoded as part of a...

journal_title：Nature

authors： Tanzi RE,St George-Hyslop PH,Haines JL,Polinsky RJ,Nee L,Foncin JF,Neve RL,McClatchey AI,Conneally PM,Gusella JF

更新日期：1987-09-10 00:00:00

abstract：:Exoplanet detections have revolutionized astronomy, offering new insights into solar system architecture and planet demographics. While nearly 1,900 exoplanets have now been discovered and confirmed, none are still in the process of formation. Transition disks, protoplanetary disks with inner clearings best explained ...

journal_title：Nature

authors： Sallum S,Follette KB,Eisner JA,Close LM,Hinz P,Kratter K,Males J,Skemer A,Macintosh B,Tuthill P,Bailey V,Defrère D,Morzinski K,Rodigas T,Spalding E,Vaz A,Weinberger AJ

更新日期：2015-11-19 00:00:00

abstract：: ...

journal_title：Nature

authors： Cyranoski D

更新日期：2019-02-01 00:00:00

abstract：:The recent decades-long decline in East African rainfall suggests that multidecadal variability is an important component of the climate of this vulnerable region. Prior work based on analysing the instrumental record implicates both Indian and Pacific ocean sea surface temperatures (SSTs) as possible drivers of East ...

journal_title：Nature

authors： Tierney JE,Smerdon JE,Anchukaitis KJ,Seager R

更新日期：2013-01-17 00:00:00