Evidence from U-Th dating against Northern Hemisphere forcing of the penultimate deglaciation

abstract：:Nuclear pore complexes reside in the nuclear envelope of eukaryotic cells and mediate the nucleocytoplasmic exchange of macromolecules. Traffic is regulated by mobile transport receptors that target their cargo to the central translocation channel, where phenylalanine-glycine-rich repeats serve as binding sites. The s...

journal_title：Nature

authors： Beck M,Lucić V,Förster F,Baumeister W,Medalia O

更新日期：2007-10-04 00:00:00

abstract：:The nucleotides immediately surrounding intron/exon junctions of genes transcribed by RNA polymerase B can be derived from 'consensus' sequences for donor and acceptor splice sites by only a few base changes. Studies in vivo have underlined the importance of these junction nucleotides for splicing. In higher eukaryote...

journal_title：Nature

authors： Rautmann G,Breathnach R

更新日期：1985-05-30 00:00:00

abstract：:Interfaces in heterostructures have been a key point of interest in condensed-matter physics for decades owing to a plethora of distinctive phenomena-such as rectification1, the photovoltaic effect2, the quantum Hall effect3 and high-temperature superconductivity4-and their critical roles in present-day technical devi...

journal_title：Nature

authors： Yang MM,Luo ZD,Mi Z,Zhao J,E SP,Alexe M

更新日期：2020-08-01 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：:The neurotrophin receptor TrkB is essential for normal function of the mammalian brain. It is expressed in three splice variants. Full-length receptors (TrkB(FL)) possess an intracellular tyrosine kinase domain and are considered as those TrkB receptors that mediate the crucial effects of brain-derived neurotrophic fa...

journal_title：Nature

authors： Rose CR,Blum R,Pichler B,Lepier A,Kafitz KW,Konnerth A

更新日期：2003-11-06 00:00:00

abstract：:Refractoriness to induction chemotherapy and relapse after achievement of remission are the main obstacles to cure in acute myeloid leukaemia (AML). After standard induction chemotherapy, patients are assigned to different post-remission strategies on the basis of cytogenetic and molecular abnormalities that broadly d...

journal_title：Nature

authors： Ng SW,Mitchell A,Kennedy JA,Chen WC,McLeod J,Ibrahimova N,Arruda A,Popescu A,Gupta V,Schimmer AD,Schuh AC,Yee KW,Bullinger L,Herold T,Görlich D,Büchner T,Hiddemann W,Berdel WE,Wörmann B,Cheok M,Preudhomme C,Domb

更新日期：2016-12-15 00:00:00

abstract：:Recent studies have shown that initial sensitization to airborne environmental allergens occurs typically in early childhood, but subsequent progression to persistent atopic asthma, which may not manifest for several years, is restricted to only a subset of atopics. The key to establishing the link between atopy and a...

journal_title：Nature

authors： Holt PG,Macaubas C,Stumbles PA,Sly PD

更新日期：1999-11-25 00:00:00

abstract：:The computations performed by local neural populations, such as a cortical layer, are typically inferred from anatomical connectivity and observations of neural activity. Here we describe a method-influence mapping-that uses single-neuron perturbations to directly measure how cortical neurons reshape sensory represent...

journal_title：Nature

authors： Chettih SN,Harvey CD

更新日期：2019-03-01 00:00:00

abstract：:Water has many kinetic and thermodynamic properties that exhibit an anomalous dependence on temperature, in particular in the supercooled phase. These anomalies have long been interpreted in terms of underlying structural causes, and their experimental characterization points to the existence of a singularity at a tem...

journal_title：Nature

authors： Torre R,Bartolini P,Righini R

更新日期：2004-03-18 00:00:00

abstract：:The use of chemotherapy to suppress replication of the human immunodeficiency virus (HIV) has transformed the face of AIDS in the developed world. Pronounced reductions in illness and death have been achieved and healthcare utilization has diminished. HIV therapy has also provided many new insights into the pathogenes...

journal_title：Nature

authors： Richman DD

更新日期：2001-04-19 00:00:00

abstract：:When an individual molecule, nanocrystal, nanotube or lithographically defined quantum dot is attached to metallic electrodes via tunnel barriers, electron transport is dominated by single-electron charging and energy-level quantization. As the coupling to the electrodes increases, higher-order tunnelling and correlat...

journal_title：Nature

authors： Liang W,Shores MP,Bockrath M,Long JR,Park H

更新日期：2002-06-13 00:00:00

abstract：:Although the nuclear properties of the late actinides (plutonium, americium and curium) are fully understood and widely applied to energy generation, their solid-state properties do not fit within standard models and are the subject of active research. Plutonium displays phases with enormous volume differences, and bo...

journal_title：Nature

authors： Shim JH,Haule K,Kotliar G

更新日期：2007-03-29 00:00:00

abstract：:Recent studies have suggested a critical role of specific gene loss in several embryonic tumours and certain adult cancers. In retinoblastoma, hemizygosity or homozygosity of a recessive mutant allele results in the loss of normal gene product, and this seems to cause the manifestation of the disorder. Familial polypo...

journal_title：Nature

authors： Okamoto M,Sasaki M,Sugio K,Sato C,Iwama T,Ikeuchi T,Tonomura A,Sasazuki T,Miyaki M

更新日期：1988-01-21 00:00:00

abstract：:Insulin resistance occurs in a variety of conditions, including diabetes, obesity and essential hypertension, but its underlying molecular mechanisms are unclear. In type 2 (non-insulin-dependent) diabetes mellitus, it is insulin-resistance in skeletal muscle, the chief site of insulin-mediated glucose disposal in hum...

journal_title：Nature

authors： Leighton B,Cooper GJ

更新日期：1988-10-13 00:00:00

abstract：:Zooxanthellae, endosymbiotic algae of reef-building corals, substantially contribute to the high gross primary production of coral reefs, but corals exude up to half of the carbon assimilated by their zooxanthellae as mucus. Here we show that released coral mucus efficiently traps organic matter from the water column ...

journal_title：Nature

authors： Wild C,Huettel M,Klueter A,Kremb SG,Rasheed MY,Jørgensen BB

更新日期：2004-03-04 00:00:00

abstract：:Arbuscular mycorrhizal fungi (AMF) are ancient asexually reproducing organisms that form symbioses with the majority of plant species, improving plant nutrition and promoting plant diversity. Little is known about the evolution or organization of the genomes of any eukaryotic symbiont or ancient asexual organism. Dire...

journal_title：Nature

authors： Hijri M,Sanders IR

更新日期：2005-01-13 00:00:00

abstract：:Metabotropic γ-aminobutyric acid receptors (GABAB) are involved in the modulation of synaptic responses in the central nervous system and have been implicated in neuropsychological conditions that range from addiction to psychosis1. GABAB belongs to class C of the G-protein-coupled receptors, and its functional entity...

journal_title：Nature

authors： Shaye H,Ishchenko A,Lam JH,Han GW,Xue L,Rondard P,Pin JP,Katritch V,Gati C,Cherezov V

更新日期：2020-08-01 00:00:00

abstract：:Although parasite-host co-speciation is a long-held hypothesis, convincing evidence for long-term co-speciation remains elusive, largely because of small numbers of hosts and parasites studied and uncertainty over rates of evolutionary change. Co-speciation is especially rare in RNA viruses, in which cross-species tra...

journal_title：Nature

authors： Switzer WM,Salemi M,Shanmugam V,Gao F,Cong ME,Kuiken C,Bhullar V,Beer BE,Vallet D,Gautier-Hion A,Tooze Z,Villinger F,Holmes EC,Heneine W

更新日期：2005-03-17 00:00:00

abstract：:Genetic manipulations of insect populations for pest control have been advocated for some time, but there are few cases where manipulated individuals have been released in the field and no cases where they have successfully invaded target populations. Population transformation using the intracellular bacterium Wolbach...

journal_title：Nature

authors： Hoffmann AA,Montgomery BL,Popovici J,Iturbe-Ormaetxe I,Johnson PH,Muzzi F,Greenfield M,Durkan M,Leong YS,Dong Y,Cook H,Axford J,Callahan AG,Kenny N,Omodei C,McGraw EA,Ryan PA,Ritchie SA,Turelli M,O'Neill SL

更新日期：2011-08-24 00:00:00

abstract：:The three-dimensional structure of the 67K amino-terminal fragment of Escherichia coli DNA topoisomerase I has been determined to 2.2 A resolution. The polypeptide folds in an unusual way to give four distinct domains enclosing a hole large enough to accommodate a double-stranded DNA. The active-site tyrosyl residue, ...

journal_title：Nature

authors： Lima CD,Wang JC,Mondragón A

更新日期：1994-01-13 00:00:00

abstract：:Inhibitory neurotransmission mediated by GABA(A) receptors can be modulated by the endogenous neurosteroids, allopregnanolone and tetrahydro-deoxycorticosterone. Neurosteroids are synthesized de novo in the brain during stress, pregnancyand after ethanol consumption, and disrupted steroid regulation of GABAergic trans...

journal_title：Nature

authors： Hosie AM,Wilkins ME,da Silva HM,Smart TG

更新日期：2006-11-23 00:00:00

abstract：:A variety of observations indicate that mid-ocean ridges produce less crust at spreading rates below 20 mm yr(-1) (refs 1-3), reflecting changes in fundamental ridge processes with decreasing spreading rate. The nature of these changes, however, remains uncertain, with end-member explanations being decreasing shallow ...

journal_title：Nature

authors： Lizarralde D,Gaherty JB,Collins JA,Hirth G,Kim SD

更新日期：2004-12-09 00:00:00

abstract：:The histocompatibility-Y (H-Y) antigen is a minor histocompatibility antigen which has been detected on cell surfaces from the heterogametic sexes of mammalian, bird, amphibian, teleost and invertebrate species. H-Y is thought to be a male-determining substance in mammals because of its almost perfect correlation with...

journal_title：Nature

authors： Shapiro M,Erickson RP

更新日期：1981-04-09 00:00:00

abstract：:Humans are able to classify novel items correctly by category; some other animals have also been shown to do this. During category learning, humans group perceptual stimuli by abstracting qualities from similarity relationships of their physical properties. Forming categories is fundamental to cognition and can be ind...

journal_title：Nature

authors： Ohl FW,Scheich H,Freeman WJ

更新日期：2001-08-16 00:00:00

abstract：:The inner ear contains sensory epithelia that detect head movements, gravity and sound. It is unclear how to develop these sensory epithelia from pluripotent stem cells, a process that will be critical for modelling inner ear disorders or developing cell-based therapies for profound hearing loss and balance disorders....

journal_title：Nature

authors： Koehler KR,Mikosz AM,Molosh AI,Patel D,Hashino E

更新日期：2013-08-08 00:00:00

abstract：:Type II DNA topoisomerases are ubiquitous ATP-dependent enzymes capable of transporting a DNA through a transient double-strand break in a second DNA segment. This enables them to untangle DNA and relax the interwound supercoils (plectonemes) that arise in twisted DNA. In vivo, they are responsible for untangling repl...

journal_title：Nature

authors： Strick TR,Croquette V,Bensimon D

更新日期：2000-04-20 00:00:00

abstract：:The recruitment model for gene activation stipulates that an activator works by bringing the transcriptional machinery to the DNA. Recent experiments in bacteria and yeast indicate that many genes can be activated by this mechanism. These findings have implications for our understanding of the nature of activating reg...

journal_title：Nature

authors： Ptashne M,Gann A

更新日期：1997-04-10 00:00:00

abstract：:The TGFβ pathway has essential roles in embryonic development, organ homeostasis, tissue repair and disease. These diverse effects are mediated through the intracellular effectors SMAD2 and SMAD3 (hereafter SMAD2/3), whose canonical function is to control the activity of target genes by interacting with transcriptiona...

journal_title：Nature

authors： Bertero A,Brown S,Madrigal P,Osnato A,Ortmann D,Yiangou L,Kadiwala J,Hubner NC,de Los Mozos IR,Sadée C,Lenaerts AS,Nakanoh S,Grandy R,Farnell E,Ule J,Stunnenberg HG,Mendjan S,Vallier L

更新日期：2018-03-08 00:00:00

abstract：:Many cellular functions involve multi-domain proteins, which are composed of structurally independent modules connected by flexible linkers. Although it is often well understood how a given domain recognizes a cognate oligonucleotide or peptide motif, the dynamic interaction of multiple domains in the recognition of t...

journal_title：Nature

authors： Mackereth CD,Madl T,Bonnal S,Simon B,Zanier K,Gasch A,Rybin V,Valcárcel J,Sattler M

更新日期：2011-07-13 00:00:00

abstract：:Temperature-sensitive paralysis is the most striking defect of adult Drosophila carrying the shibire mutation. This is believed to be due to a reversible block of endocytosis, which prevents membrane cycling and thus depletes synaptic vesicles. The shibire mutation also affects many tissues outside the nervous system....

journal_title：Nature

authors： van der Bliek AM,Meyerowitz EM

更新日期：1991-05-30 00:00:00