Evidence for two active sites in the spliceosome provided by stereochemistry of pre-mRNA splicing.

abstract：:Mesenchymal cells contribute to the 'stroma' of most normal and malignant tissues, with specific mesenchymal cells participating in the regulatory niches of stem cells. By examining how mesenchymal osteolineage cells modulate haematopoiesis, here we show that deletion of Dicer1 specifically in mouse osteoprogenitors, ...

journal_title：Nature

authors： Raaijmakers MH,Mukherjee S,Guo S,Zhang S,Kobayashi T,Schoonmaker JA,Ebert BL,Al-Shahrour F,Hasserjian RP,Scadden EO,Aung Z,Matza M,Merkenschlager M,Lin C,Rommens JM,Scadden DT

更新日期：2010-04-08 00:00:00

abstract：: ...

journal_title：Nature

authors： Hodson R

更新日期：2018-10-01 00:00:00

abstract：:Long interspersed nuclear elements-1 (LINE-1 or L1s) are abundant retrotransposons that comprise approximately 20% of mammalian genomes. Active L1 retrotransposons can impact the genome in a variety of ways, creating insertions, deletions, new splice sites or gene expression fine-tuning. We have shown previously that ...

journal_title：Nature

authors： Muotri AR,Marchetto MC,Coufal NG,Oefner R,Yeo G,Nakashima K,Gage FH

更新日期：2010-11-18 00:00:00

abstract：:Thrombin is a coagulation protease that activates platelets, leukocytes, endothelial and mesenchymal cells at sites of vascular injury, acting partly through an unusual proteolytically activated G-protein-coupled receptor. Knockout of the gene encoding this receptor provided definitive evidence for a second thrombin r...

journal_title：Nature

authors： Ishihara H,Connolly AJ,Zeng D,Kahn ML,Zheng YW,Timmons C,Tram T,Coughlin SR

更新日期：1997-04-03 00:00:00

abstract：:The heavy (H) and light (L) chains of antibodies consist of variable (V) and constant (C) regions. The V regions of the heavy and light chains form the antibody combining site. To determine whether a V region could be functional when joined to a polypeptide other than its own C region, we constructed a chimaeric gene ...

journal_title：Nature

authors： Sharon J,Gefter ML,Manser T,Morrison SL,Oi VT,Ptashne M

更新日期：1984-05-24 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：:Menopause is associated with bone loss and enhanced visceral adiposity. A polyclonal antibody that targets the β-subunit of the pituitary hormone follicle-stimulating hormone (Fsh) increases bone mass in mice. Here, we report that this antibody sharply reduces adipose tissue in wild-type mice, phenocopying genetic hap...

journal_title：Nature

authors： Liu P,Ji Y,Yuen T,Rendina-Ruedy E,DeMambro VE,Dhawan S,Abu-Amer W,Izadmehr S,Zhou B,Shin AC,Latif R,Thangeswaran P,Gupta A,Li J,Shnayder V,Robinson ST,Yu YE,Zhang X,Yang F,Lu P,Zhou Y,Zhu LL,Oberlin DJ,Davie

更新日期：2017-06-01 00:00:00

abstract：:Organic photovoltaic cells are now approaching commercially viable efficiencies, particularly for applications that make use of their unique potential for flexibility and semitransparency1-3. However, their reliability remains a major concern, as even the most stable devices reported so far degrade within only a few y...

journal_title：Nature

authors： Burlingame Q,Huang X,Liu X,Jeong C,Coburn C,Forrest SR

更新日期：2019-09-01 00:00:00

abstract：:Poly(dA).poly(dT) has unusual properties in that it cannot associate into nucleosomes and short, phased runs of it cause DNA bending. The crystal structure of a B-type DNA dodecamer containing a homopolymeric run of six A.T base pairs shows that this region possesses special structural features, including a system of ...

journal_title：Nature

authors： Nelson HC,Finch JT,Luisi BF,Klug A

更新日期：1987-11-19 00:00:00

abstract：:The domestication of dogs was an important episode in the development of human civilization. The precise timing and location of this event is debated and little is known about the genetic changes that accompanied the transformation of ancient wolves into domestic dogs. Here we conduct whole-genome resequencing of dogs...

journal_title：Nature

authors： Axelsson E,Ratnakumar A,Arendt ML,Maqbool K,Webster MT,Perloski M,Liberg O,Arnemo JM,Hedhammar A,Lindblad-Toh K

更新日期：2013-03-21 00:00:00

abstract：:Multicellular organisms have co-evolved with complex consortia of viruses, bacteria, fungi and parasites, collectively referred to as the microbiota1. In mammals, changes in the composition of the microbiota can influence many physiologic processes (including development, metabolism and immune cell function) and are a...

journal_title：Nature

authors： Chu C,Murdock MH,Jing D,Won TH,Chung H,Kressel AM,Tsaava T,Addorisio ME,Putzel GG,Zhou L,Bessman NJ,Yang R,Moriyama S,Parkhurst CN,Li A,Meyer HC,Teng F,Chavan SS,Tracey KJ,Regev A,Schroeder FC,Lee FS,Liston C

更新日期：2019-10-01 00:00:00

abstract：:In the course of synaptic transmission in the brain and periphery, acetylcholine receptors (AChRs) rapidly transduce a chemical signal into an electrical impulse. The speed of transduction is facilitated by rapid ACh association and dissociation, suggesting a binding site relatively non-selective for small cations. Se...

journal_title：Nature

authors： Mukhtasimova N,Lee WY,Wang HL,Sine SM

更新日期：2009-05-21 00:00:00

abstract：:Cytotoxic T cells lyse only those virus infected target cells in vitro which express, in addition to the viral antigen(s), those K or D region products of the major histocompatibility complex (MHC) which were present during anti-viral sensitisation in vivo. This 'associative recognition' by cytotoxic T cells could ref...

journal_title：Nature

authors： Koszinowski U,Gething MJ,Waterfield M

更新日期：1977-05-12 00:00:00

abstract：:Maize smut caused by the fungus Ustilago maydis is a widespread disease characterized by the development of large plant tumours. U. maydis is a biotrophic pathogen that requires living plant tissue for its development and establishes an intimate interaction zone between fungal hyphae and the plant plasma membrane. U. ...

journal_title：Nature

authors： Djamei A,Schipper K,Rabe F,Ghosh A,Vincon V,Kahnt J,Osorio S,Tohge T,Fernie AR,Feussner I,Feussner K,Meinicke P,Stierhof YD,Schwarz H,Macek B,Mann M,Kahmann R

更新日期：2011-10-05 00:00:00

abstract：:Diminishing fossil fuel reserves and growing concerns about global warming indicate that sustainable sources of energy are needed in the near future. For fuels to be useful in the transportation sector, they must have specific physical properties that allow for efficient distribution, storage and combustion; these pro...

journal_title：Nature

authors： Román-Leshkov Y,Barrett CJ,Liu ZY,Dumesic JA

更新日期：2007-06-21 00:00:00

abstract：: ...

journal_title：Nature

authors： Glausiusz J

更新日期：2019-01-01 00:00:00

abstract：:Nanoscale electronic devices made from carbon nanotubes, such as transistors and sensors, are much smaller and more versatile than those that rely on conventional microelectronic chips, but their development for mass production has been thwarted by difficulties in aligning and integrating the millions of nanotubes req...

journal_title：Nature

authors： Rao SG,Huang L,Setyawan W,Hong S

更新日期：2003-09-04 00:00:00

abstract：:P2Y receptors (P2YRs), a family of purinergic G-protein-coupled receptors (GPCRs), are activated by extracellular nucleotides. There are a total of eight distinct functional P2YRs expressed in human, which are subdivided into P2Y1-like receptors and P2Y12-like receptors. Their ligands are generally charged molecules w...

journal_title：Nature

authors： Zhang K,Zhang J,Gao ZG,Zhang D,Zhu L,Han GW,Moss SM,Paoletta S,Kiselev E,Lu W,Fenalti G,Zhang W,Müller CE,Yang H,Jiang H,Cherezov V,Katritch V,Jacobson KA,Stevens RC,Wu B,Zhao Q

更新日期：2014-05-01 00:00:00

abstract：:Angiosperms developed floral nectaries that reward pollinating insects. Although nectar function and composition have been characterized, the mechanism of nectar secretion has remained unclear. Here we identify SWEET9 as a nectary-specific sugar transporter in three eudicot species: Arabidopsis thaliana, Brassica rapa...

journal_title：Nature

authors： Lin IW,Sosso D,Chen LQ,Gase K,Kim SG,Kessler D,Klinkenberg PM,Gorder MK,Hou BH,Qu XQ,Carter CJ,Baldwin IT,Frommer WB

更新日期：2014-04-24 00:00:00

abstract：:The cortex organizes sensory information to enable discrimination and generalization1-4. As systematic representations of chemical odour space have not yet been described in the olfactory cortex, it remains unclear how odour relationships are encoded to place chemically distinct but similar odours, such as lemon and o...

journal_title：Nature

authors： Pashkovski SL,Iurilli G,Brann D,Chicharro D,Drummey K,Franks KM,Panzeri S,Datta SR

更新日期：2020-07-01 00:00:00

abstract：:Following the introduction of silicon-based integrated circuitry over three decades ago, the integration density of such circuits has doubled every 12 to 18 months: this observation is known as Moore's law. For this historical trend to continue, significant challenges need to be overcome in several key technological a...

journal_title：Nature

authors： Peercy PS

更新日期：2000-08-31 00:00:00

abstract：:beta Pictoris (beta Pic) is a main-sequence star with an edge-on dust disk that might represent a state of the early Solar System. The dust does not seem to be a remnant from the original protoplanetary disk, but rather is thought to have been generated from large bodies like planetesimals and/or comets. The history a...

journal_title：Nature

authors： Okamoto YK,Kataza H,Honda M,Yamashita T,Onaka T,Watanabe J,Miyata T,Sako S,Fujiyoshi T,Sakon I

更新日期：2004-10-07 00:00:00

abstract：:Complex I is the first enzyme of the respiratory chain and has a central role in cellular energy production, coupling electron transfer between NADH and quinone to proton translocation by an unknown mechanism. Dysfunction of complex I has been implicated in many human neurodegenerative diseases. We have determined the...

journal_title：Nature

authors： Efremov RG,Baradaran R,Sazanov LA

更新日期：2010-05-27 00:00:00

abstract：:Globular star clusters that formed at the same cosmic time may have evolved rather differently from the dynamical point of view (because that evolution depends on the internal environment) through a variety of processes that tend progressively to segregate stars more massive than the average towards the cluster centre...

journal_title：Nature

authors： Ferraro FR,Lanzoni B,Dalessandro E,Beccari G,Pasquato M,Miocchi P,Rood RT,Sigurdsson S,Sills A,Vesperini E,Mapelli M,Contreras R,Sanna N,Mucciarelli A

更新日期：2012-12-20 00:00:00

abstract：:The clinical benefit for patients with diverse types of metastatic cancers that has been observed upon blockade of the interaction between PD-1 and PD-L1 has highlighted the importance of this inhibitory axis in the suppression of tumour-specific T-cell responses. Notwithstanding the key role of PD-L1 expression by ce...

journal_title：Nature

authors： Mezzadra R,Sun C,Jae LT,Gomez-Eerland R,de Vries E,Wu W,Logtenberg MEW,Slagter M,Rozeman EA,Hofland I,Broeks A,Horlings HM,Wessels LFA,Blank CU,Xiao Y,Heck AJR,Borst J,Brummelkamp TR,Schumacher TNM

更新日期：2017-09-07 00:00:00

abstract：:Blood vessel growth in the skeletal system and osteogenesis seem to be coupled, suggesting the existence of molecular crosstalk between endothelial and osteoblastic cells. Understanding the nature of the mechanisms linking angiogenesis and bone formation should be of great relevance for improved fracture healing or pr...

journal_title：Nature

authors： Ramasamy SK,Kusumbe AP,Wang L,Adams RH

更新日期：2014-03-20 00:00:00

abstract：:Modern high-power lasers can generate extreme states of matter that are relevant to astrophysics, equation-of-state studies and fusion energy research. Laser-driven implosions of spherical polymer shells have, for example, achieved an increase in density of 1,000 times relative to the solid state. These densities are ...

journal_title：Nature

authors： Kodama R,Norreys PA,Mima K,Dangor AE,Evans RG,Fujita H,Kitagawa Y,Krushelnick K,Miyakoshi T,Miyanaga N,Norimatsu T,Rose SJ,Shozaki T,Shigemori K,Sunahara A,Tampo M,Tanaka KA,Toyama Y,Yamanaka T,Zepf M

更新日期：2001-08-23 00:00:00

abstract：:Enhancers increase the frequency of transcription initiation from linked promoter elements, most probably as a result of the binding of specific proteins to the enhancer. The polyomavirus early region is expressed in differentiated mouse cells but not in undifferentiated embryonal carcinoma (EC) cells. This host range...

journal_title：Nature

authors： Kovesdi I,Satake M,Furukawa K,Reichel R,Ito Y,Nevins JR

更新日期：1987-07-02 00:00:00

abstract：:Electrochemical reduction of carbon dioxide (CO2) to carbon monoxide (CO) is the first step in the synthesis of more complex carbon-based fuels and feedstocks using renewable electricity. Unfortunately, the reaction suffers from slow kinetics owing to the low local concentration of CO2 surrounding typical CO2 reductio...

journal_title：Nature

authors： Liu M,Pang Y,Zhang B,De Luna P,Voznyy O,Xu J,Zheng X,Dinh CT,Fan F,Cao C,de Arquer FP,Safaei TS,Mepham A,Klinkova A,Kumacheva E,Filleter T,Sinton D,Kelley SO,Sargent EH

更新日期：2016-09-15 00:00:00

abstract：:The vomeronasal organ (VNO) is a chemoreceptive organ that is thought to transduce pheromones into electrical responses that regulate sexual, hormonal and reproductive function in mammals. The characteristics of pheromone signal detection by vomeronasal neurons remain unclear. Here we use a mouse VNO slice preparation...

journal_title：Nature

authors： Leinders-Zufall T,Lane AP,Puche AC,Ma W,Novotny MV,Shipley MT,Zufall F

更新日期：2000-06-15 00:00:00