Temperature-sensitive mutant of avian erythroblastosis virus suggests a block of differentiation as mechanism of leukaemogenesis.

abstract：:The vasopressor angiotensin II regulates vascular contractility and blood pressure through binding to type 1 angiotensin II receptors (AT1; refs 1, 2). Bradykinin, a vasodepressor, is a functional antagonist of angiotensin II (ref. 3). The two hormone systems are interconnected by the angiotensin-converting enzyme, wh...

journal_title：Nature

authors： AbdAlla S,Lother H,Quitterer U

更新日期：2000-09-07 00:00:00

abstract：:The arrest of dorsal root axonal regeneration at the transitional zone between the peripheral and central nervous system has been repeatedly described since the early twentieth century. Here we show that, with trophic support to damaged sensory axons, this regenerative barrier is surmountable. In adult rats with injur...

journal_title：Nature

authors： Ramer MS,Priestley JV,McMahon SB

更新日期：2000-01-20 00:00:00

abstract：:The cranial morphology of the earliest known hominins in the genus Australopithecus remains unclear. The oldest species in this genus (Australopithecus anamensis, specimens of which have been dated to 4.2-3.9 million years ago) is known primarily from jaws and teeth, whereas younger species (dated to 3.5-2.0 million y...

journal_title：Nature

authors： Haile-Selassie Y,Melillo SM,Vazzana A,Benazzi S,Ryan TM

更新日期：2019-09-01 00:00:00

abstract：:Glucagon is a 29-amino-acid peptide released from the α-cells of the islet of Langerhans, which has a key role in glucose homeostasis. Glucagon action is transduced by the class B G-protein-coupled glucagon receptor (GCGR), which is located on liver, kidney, intestinal smooth muscle, brain, adipose tissue, heart and p...

journal_title：Nature

authors： Jazayeri A,Doré AS,Lamb D,Krishnamurthy H,Southall SM,Baig AH,Bortolato A,Koglin M,Robertson NJ,Errey JC,Andrews SP,Teobald I,Brown AJ,Cooke RM,Weir M,Marshall FH

更新日期：2016-05-12 00:00:00

abstract：:The enzyme cytochrome c nitrite reductase catalyses the six-electron reduction of nitrite to ammonia as one of the key steps in the biological nitrogen cycle, where it participates in the anaerobic energy metabolism of dissimilatory nitrate ammonification. Here we report on the crystal structure of this enzyme from th...

journal_title：Nature

authors： Einsle O,Messerschmidt A,Stach P,Bourenkov GP,Bartunik HD,Huber R,Kroneck PM

更新日期：1999-07-29 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

abstract：:Mesolimbic dopamine-releasing neurons appear to be important in the brain reward system. One behavioural paradigm that supports this hypothesis is intracranial self-stimulation (ICS), during which animals repeatedly press a lever to stimulate their own dopamine-releasing neurons electrically. Here we study dopamine re...

journal_title：Nature

authors： Garris PA,Kilpatrick M,Bunin MA,Michael D,Walker QD,Wightman RM

更新日期：1999-03-04 00:00:00

abstract：:Highly efficient neutron detectors are critical in many sectors, including national security1,2, medicine3, crystallography4 and astronomy5. The main neutron detection technologies currently used involve 3He-gas-filled proportional counters6 and light scintillators7 for thermalized neutrons. Semiconductors could provi...

journal_title：Nature

authors： Chica DG,He Y,McCall KM,Chung DY,Pak RO,Trimarchi G,Liu Z,De Lurgio PM,Wessels BW,Kanatzidis MG

更新日期：2020-01-01 00:00:00

abstract：:Galaxies had their most significant impact on the Universe when they assembled their first generations of stars. Energetic photons emitted by young, massive stars in primeval galaxies ionized the intergalactic medium surrounding their host galaxies, cleared sightlines along which the light of the young galaxies could ...

journal_title：Nature

authors： Lehnert MD,Nesvadba NP,Cuby JG,Swinbank AM,Morris S,Clément B,Evans CJ,Bremer MN,Basa S

更新日期：2010-10-21 00:00:00

abstract：:Alzheimer's disease is the world's most common dementing illness. Deposition of amyloid-β peptide drives cerebral neuroinflammation by activating microglia. Indeed, amyloid-β activation of the NLRP3 inflammasome in microglia is fundamental for interleukin-1β maturation and subsequent inflammatory events. However, it r...

journal_title：Nature

authors： Heneka MT,Kummer MP,Stutz A,Delekate A,Schwartz S,Vieira-Saecker A,Griep A,Axt D,Remus A,Tzeng TC,Gelpi E,Halle A,Korte M,Latz E,Golenbock DT

更新日期：2013-01-31 00:00:00

abstract：:Animals must respond to various threats to survive. Neurons that express calcitonin gene-related peptide in the parabrachial nucleus (CGRPPBN neurons) relay sensory signals that contribute to satiation and pain-induced fear behaviour, but it is unclear how they encode these distinct processes. Here, by recording calci...

journal_title：Nature

authors： Campos CA,Bowen AJ,Roman CW,Palmiter RD

更新日期：2018-03-29 00:00:00

abstract：:It has been speculated that brain activities might directly control adaptive immune responses in lymphoid organs, although there is little evidence for this. Here we show that splenic denervation in mice specifically compromises the formation of plasma cells during a T cell-dependent but not T cell-independent immune ...

journal_title：Nature

authors： Zhang X,Lei B,Yuan Y,Zhang L,Hu L,Jin S,Kang B,Liao X,Sun W,Xu F,Zhong Y,Hu J,Qi H

更新日期：2020-05-01 00:00:00

abstract：:In mammalian tissues the C-terminal amide structure has been found to occur only in neuroactive or hormonally-active peptides. About half known neuropeptide and peptide hormones have this unique chemical feature. Using a chemical detection method, a search for previously unknown peptides that possess the C-terminal am...

journal_title：Nature

authors： Tatemoto K,Efendić S,Mutt V,Makk G,Feistner GJ,Barchas JD

更新日期：1986-12-04 00:00:00

abstract：:Migration of cells in higher organisms is mediated by adhesion receptors, such as integrins, that link the cell to extracellular-matrix ligands, transmitting forces and signals necessary for locomotion. Whether cells will migrate or not on a given substratum, and also their speed, depends on several variables related ...

journal_title：Nature

authors： Palecek SP,Loftus JC,Ginsberg MH,Lauffenburger DA,Horwitz AF

更新日期：1997-02-06 00:00:00

abstract：:The oxygen evolution reaction has an important role in many alternative-energy schemes because it supplies the protons and electrons required for converting renewable electricity into chemical fuels1-3. Electrocatalysts accelerate the reaction by facilitating the required electron transfer4, as well as the formation a...

journal_title：Nature

authors： Nong HN,Falling LJ,Bergmann A,Klingenhof M,Tran HP,Spöri C,Mom R,Timoshenko J,Zichittella G,Knop-Gericke A,Piccinin S,Pérez-Ramírez J,Cuenya BR,Schlögl R,Strasser P,Teschner D,Jones TE

更新日期：2020-11-01 00:00:00

abstract：:Interleukin-2 (IL-2) is a regulatory peptide important for the growth and differentiation of antigen-specific T lymphocytes and large granular lymphocytes. Interaction of IL-2 with its specific receptor results in the promotion of S-phase progression as well as, in certain circumstances, the production and release of ...

journal_title：Nature

authors： Farrar WL,Anderson WB

更新日期：1985-05-16 00:00:00

abstract：:Multiple endocrine neoplasia type 1 (MEN-1) is a predisposition to hyperplasia of the parathyroid glands, and to hyperplasia or tumours of the anterior pituitary and the endocrine pancreas, and is inherited as an autosomal dominant trait. Here we map the MEN-1 locus to chromosome 11 by family studies, and demonstrate ...

journal_title：Nature

authors： Larsson C,Skogseid B,Oberg K,Nakamura Y,Nordenskjöld M

更新日期：1988-03-03 00:00:00

abstract：:A serine/threonine kinase, named protein kinase B (PKB) for its sequence homology to both protein kinase A and C, has previously been isolated. PKB, which is identical to the kinase Rac, was later found to be the cellular homologue of the transforming v-Akt. Here we show that PKB is activated by stimuli such as insuli...

journal_title：Nature

authors： Burgering BM,Coffer PJ

更新日期：1995-08-17 00:00:00

abstract：:T cells recognize foreign proteins as peptides bound to self molecules encoded by the major histocompatibility complex (MHC). The kinetics of interaction between purified class II MHC molecules and peptides is unusual, in that the rate of association is very slow, but once formed, the complexes are extremely stable. T...

journal_title：Nature

authors： Adorini L,Appella E,Doria G,Cardinaux F,Nagy ZA

更新日期：1989-12-14 00:00:00

abstract：:The 37-amino-acid calcitonin gene-related peptide (CGRP) occurs as a result of alternative processing of mRNA from the calcitonin gene. The potency of CGRP as a vasodilator and the occurrence of the peptide in nerves associated with blood vessels suggest an important role for CGRP in the regulation of blood flow. The ...

journal_title：Nature

authors： Brain SD,Williams TJ

更新日期：1988-09-01 00:00:00

abstract：:Hen egg-white lysozyme (HEWL) was the first enzyme to have its three-dimensional structure determined by X-ray diffraction techniques. A catalytic mechanism, featuring a long-lived oxocarbenium-ion intermediate, was proposed on the basis of model-building studies. The 'Phillips' mechanism is widely held as the paradig...

journal_title：Nature

authors： Vocadlo DJ,Davies GJ,Laine R,Withers SG

更新日期：2001-08-23 00:00:00

abstract：:Unicellular organisms such as yeasts require a single cyclin-dependent kinase, Cdk1, to drive cell division. In contrast, mammalian cells are thought to require the sequential activation of at least four different cyclin-dependent kinases, Cdk2, Cdk3, Cdk4 and Cdk6, to drive cells through interphase, as well as Cdk1 t...

journal_title：Nature

authors： Santamaría D,Barrière C,Cerqueira A,Hunt S,Tardy C,Newton K,Cáceres JF,Dubus P,Malumbres M,Barbacid M

更新日期：2007-08-16 00:00:00

abstract：:The antigen CD10 (common acute lymphoblastic leukaemia antigen), which is the zinc metalloprotease, neutral endopeptidase 24.11 (also known as NEP or 'enkephalinase'), is expressed by acute lymphoblastic leukaemias, normal lymphoid progenitors, mature polymorphonuclear leukocytes and certain nonhaematopoietic cells. C...

journal_title：Nature

authors： Shipp MA,Stefano GB,D'Adamio L,Switzer SN,Howard FD,Sinisterra J,Scharrer B,Reinherz EL

更新日期：1990-09-27 00:00:00

abstract：:Water masers are found in dense molecular clouds closely associated with supermassive black holes at the centres of active galaxies. On the basis of the understanding of the local water-maser luminosity function, it was expected that masers at intermediate and high redshifts would be extremely rare. However, galaxies ...

journal_title：Nature

authors： Impellizzeri CM,McKean JP,Castangia P,Roy AL,Henkel C,Brunthaler A,Wucknitz O

更新日期：2008-12-18 00:00:00

abstract：:B lymphocytes re-circulate between B-cell-rich compartments (follicles or B zones) in secondary lymphoid organs, surveying for antigen. After antigen binding, B cells move to the boundary of B and T zones to interact with T-helper cells. Despite the importance of B--T-cell interactions for the induction of antibody re...

journal_title：Nature

authors： Reif K,Ekland EH,Ohl L,Nakano H,Lipp M,Förster R,Cyster JG

更新日期：2002-03-07 00:00:00

abstract：:Neural mechanisms that mediate the ability to make value-guided decisions have received substantial attention in humans and animals1-6. Experiments in animals typically involve long training periods. By contrast, choices in the real world often need to be made between new options spontaneously. It is therefore possibl...

journal_title：Nature

authors： Bongioanni A,Folloni D,Verhagen L,Sallet J,Klein-Flügge MC,Rushworth MFS

更新日期：2021-01-06 00:00:00

abstract：:Seismological studies have revealed that a complex texture or heterogeneity exists in the Earth's inner core and at the boundary between core and mantle. These studies highlight the importance of understanding the properties of iron when modelling the composition and dynamics of the core and the interaction of the cor...

journal_title：Nature

authors： Dubrovinsky L,Annersten H,Dubrovinskaia N,Westman F,Harryson H,Fabrichnaya O,Carlson S

更新日期：2001-08-02 00:00:00

abstract：:Polymeric matrices can be used to grow new tissues and organs, and the delivery of growth factors from these matrices is one method to regenerate tissues. A problem with engineering tissues that exist in a mechanically dynamic environment, such as bone, muscle and blood vessels, is that most drug delivery systems have...

journal_title：Nature

authors： Lee KY,Peters MC,Anderson KW,Mooney DJ

更新日期：2000-12-21 00:00:00

abstract：:Angiotensin II is an important effector molecule controlling blood pressure and volume in the cardiovascular system. Its importance is manifested by the efficacy of angiotensin-converting enzyme inhibitors in the treatment of hypertension and congestive heart failure. Angiotensin II interacts with two pharmacologicall...

journal_title：Nature

authors： Murphy TJ,Alexander RW,Griendling KK,Runge MS,Bernstein KE

更新日期：1991-05-16 00:00:00

abstract：:There is no consensus on whether climate change has yet affected the statistics of tropical cyclones, owing to their large natural variability and the limited period of consistent observations. In addition, projections of future tropical cyclone activity are uncertain, because they often rely on coarse-resolution clim...

journal_title：Nature

authors： Patricola CM,Wehner MF

更新日期：2018-11-01 00:00:00