More than one bad apple.

abstract：:Somatic sexual differentiation in Drosophila melanogaster involves a cascade of regulated splicing events and provides an attractive model system for the analysis of alternative splicing mechanisms. The protein Sex-lethal (Sxl) activates a female-specific 3' splice site in the first intron of transformer (tra) pre-mRN...

journal_title：Nature

authors： Valcárcel J,Singh R,Zamore PD,Green MR

更新日期：1993-03-11 00:00:00

abstract：:Discovering evidence of behaviour in fossilized vertebrates is rare. Even rarer is evidence of behaviour in non-avialan dinosaurs that directly relates to stereotypical behaviour seen in extant birds (avians) and not previously predicted in non-avialan dinosaurs. Here we report the discovery of a new troodontid taxon ...

journal_title：Nature

authors： Xu X,Norell MA

更新日期：2004-10-14 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：:Molecular self-assembly offers a 'bottom-up' route to fabrication with subnanometre precision of complex structures from simple components. DNA has proved to be a versatile building block for programmable construction of such objects, including two-dimensional crystals, nanotubes, and three-dimensional wireframe nanop...

journal_title：Nature

authors： Douglas SM,Dietz H,Liedl T,Högberg B,Graf F,Shih WM

更新日期：2009-05-21 00:00:00

abstract：:The Fanconi anaemia (FA) pathway repairs DNA damage caused by endogenous and chemotherapy-induced DNA crosslinks, and responds to replication stress1,2. Genetic inactivation of this pathway by mutation of genes encoding FA complementation group (FANC) proteins impairs development, prevents blood production and promote...

journal_title：Nature

authors： Shakeel S,Rajendra E,Alcón P,O'Reilly F,Chorev DS,Maslen S,Degliesposti G,Russo CJ,He S,Hill CH,Skehel JM,Scheres SHW,Patel KJ,Rappsilber J,Robinson CV,Passmore LA

更新日期：2019-11-01 00:00:00

abstract：:The peptide GsMTx4, isolated from the venom of the tarantula Grammostola spatulata, is a selective inhibitor of stretch-activated cation channels (SACs). The mechanism of inhibition remains unknown; but both GsMTx4 and its enantiomer, enGsMTx4, modify the gating of SACs, thus violating a trademark of the traditional l...

journal_title：Nature

authors： Suchyna TM,Tape SE,Koeppe RE 2nd,Andersen OS,Sachs F,Gottlieb PA

更新日期：2004-07-08 00:00:00

abstract：:Bioluminescent symbioses range from facultative associations to highly adapted, apparently obligate ones. The family Anomalopidae (flashlight fishes) encompasses five genera of tropical reef fishes that have large suborbital light organs. The suborder Ceratioidei (deep-sea anglerfishes) contains 11 families. In nine o...

journal_title：Nature

authors： Haygood MG,Distel DL

更新日期：1993-05-13 00:00:00

abstract：:Transplantation surgery, which is limited by the supply and short-term viability of fresh donor organs, would be revolutionized if these could survive freezing, but early claims of cryopreservation were never realized. Here we describe the successful transplantation in rats of ovaries, fallopian tubes and the upper se...

journal_title：Nature

authors： Wang X,Chen H,Yin H,Kim SS,Lin Tan S,Gosden RG

更新日期：2002-01-24 00:00:00

abstract：:The chemical composition of basaltic magma erupted at the Earth's surface is the end product of a complex series of processes, beginning with partial melting and melt extraction from a mantle source and ending with fractional crystallization and crustal assimilation at lower pressures. It has been proposed that studyi...

journal_title：Nature

authors： Spandler C,O'Neill HS,Kamenetsky VS

更新日期：2007-05-17 00:00:00

abstract：:Monoclonal antibodies were raised against antibodies to distinct carboxy-terminal KDEL sequences of two soluble, resident endoplasmic reticulum proteins. These anti-idiotype reagents recognize an intrinsic membrane protein with characteristics expected of a receptor responsible for the recognition and return of reside...

journal_title：Nature

authors： Vaux D,Tooze J,Fuller S

更新日期：1990-06-07 00:00:00

abstract：:During embryonic development, orderly patterns of gene expression eventually assign each cell in the embryo its particular fate. For the anteroposterior axis of the Drosophila embryo, the first step in this process depends on a spatial gradient of the maternal morphogen Bicoid (Bcd). Positional information of this gra...

journal_title：Nature

authors： Houchmandzadeh B,Wieschaus E,Leibler S

更新日期：2002-02-14 00:00:00

abstract：:Large mammals, including humans, save much of the energy needed for running by means of elastic structures in their legs and feet. Kinetic and potential energy removed from the body in the first half of the stance phase is stored briefly as elastic strain energy and then returned in the second half by elastic recoil. ...

journal_title：Nature

authors： Ker RF,Bennett MB,Bibby SR,Kester RC,Alexander RM

更新日期：1987-01-08 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：:DNA methylation has a profound impact on genome stability, transcription and development. Although enzymes that catalyse DNA methylation have been well characterized, those that are involved in methyl group removal have remained elusive, until recently. The transformative discovery that ten-eleven translocation (TET) ...

journal_title：Nature

authors： Kohli RM,Zhang Y

更新日期：2013-10-24 00:00:00

abstract：:Saturn's moon Titan has a nitrogen atmosphere comparable to Earth's, with a surface pressure of 1.4 bar. Numerical models reproduce the tropospheric conditions very well but have trouble explaining the observed middle-atmosphere temperatures, composition and winds. The top of the middle-atmosphere circulation has been...

journal_title：Nature

authors： Teanby NA,Irwin PG,Nixon CA,de Kok R,Vinatier S,Coustenis A,Sefton-Nash E,Calcutt SB,Flasar FM

更新日期：2012-11-29 00:00:00

abstract：:The interaction of lectins with carbohydrate receptors on the plasma membrane of eukaryotic cells results in a wide variety of biological effects. One effect which has been extensively studied is the stimulation of lymphocytes to blastogenesis and proliferation. High doses of concanavalin A (Con A) and phytohaemagglut...

journal_title：Nature

authors： Hilgert I,Horejsí V,Angelisová P,Kristofová H

更新日期：1980-03-20 00:00:00

abstract：:The most striking feature of the Sun's magnetic field is its cyclic behaviour. The number of sunspots, which are dark regions of strong magnetic field on the Sun's surface, varies with a period of about 11 years. Superposed on this cycle are secular changes that occur on timescales of centuries and events like the Mau...

journal_title：Nature

authors： Solanki SK,Schüssler M,Fligge M

更新日期：2000-11-23 00:00:00

abstract：:The intracellular free Ca2+ ([Ca2+]i) regulates the K+ conductance (GK) of the many types of cell membrane. The Ca2+ influx during an action potential activates this [Ca2+]i-linked GK in most neurones. In caffeine-treated sympathetic ganglion cells, however, Ca2+ released from an intracellular Ca2+ reservoir site anal...

journal_title：Nature

authors： Morita K,Koketsu K,Kuba K

更新日期：1980-01-10 00:00:00

abstract：:One simple, widely accepted mechanism for generating an aberrant chromosome number, or aneuploidy, is through nondisjunction--a chromosome distribution error that occurs during mitosis when both copies of a duplicated chromosome are deposited into one daughter cell and none into the other. Shi and King challenge this ...

journal_title：Nature

authors： Weaver BA,Silk AD,Cleveland DW

更新日期：2006-08-17 00:00:00

abstract：:The unusual helium-rich (type Ib) supernova SN 2005E is distinguished from all supernovae hitherto observed by its faint and rapidly fading light curve, prominent calcium lines in late-phase spectra and lack of any mark of recent star formation near the supernova location. These properties are claimed to be explained ...

journal_title：Nature

authors： Kawabata KS,Maeda K,Nomoto K,Taubenberger S,Tanaka M,Deng J,Pian E,Hattori T,Itagaki K

更新日期：2010-05-20 00:00:00

abstract：:Adult stem cells undergo asymmetric cell division to self-renew and give rise to differentiated cells that comprise mature tissue. Sister chromatids may be distinguished and segregated nonrandomly in asymmetrically dividing stem cells, although the underlying mechanism and the purpose it may serve remain elusive. Here...

journal_title：Nature

authors： Yadlapalli S,Yamashita YM

更新日期：2013-06-13 00:00:00

abstract：:The mec-2 gene is required for the function of a set of six touch receptor neurons in the nematode Caenorhabditis elegans; mec-2 mutants, which are touch-insensitive, have touch cells that appear morphologically normal. Gene interaction studies suggest that mec-2 positively regulates the activity of the putative mecha...

journal_title：Nature

authors： Huang M,Gu G,Ferguson EL,Chalfie M

更新日期：1995-11-16 00:00:00

abstract：:RNAs that contain specific high-affinity binding sites for small molecule ligands immobilized on a solid support are present at a frequency of roughly one in 10(10)-10(11) in pools of random sequence RNA molecules. Here we describe a new in vitro selection procedure designed to ensure the isolation of RNAs that bind t...

journal_title：Nature

authors： Sassanfar M,Szostak JW

更新日期：1993-08-05 00:00:00

abstract：:In contrast to protein-coding sequences, the significance of variation in non-coding DNA in human disease has been minimally explored. A great number of recent genome-wide association studies suggest that non-coding variation is a significant risk factor for common disorders, but the mechanisms by which this variation...

journal_title：Nature

authors： Visel A,Rubin EM,Pennacchio LA

更新日期：2009-09-10 00:00:00

abstract：:Manic depression is a severe cyclic mental illness that can be unipolar or bipolar and has a lifetime risk of approximately 7 per 1,000 in most populations. Families with multiple cases of manic depression have been described that are compatible with both autosomal dominant and X-linked modes of genetic transmission. ...

journal_title：Nature

authors： Hodgkinson S,Sherrington R,Gurling H,Marchbanks R,Reeders S,Mallet J,McInnis M,Petursson H,Brynjolfsson J

更新日期：1987-02-26 00:00:00

abstract：:The guinea-pig (Cavia porcellus), traditionally classified as a New World hystricomorph rodent, often shows anomalous morphological and molecular features in comparison with other eutherian mammals. For example, its insulin differs from that of other mammals in anabolic and growth-promoting activities and in its capab...

journal_title：Nature

authors： Graur D,Hide WA,Li WH

更新日期：1991-06-20 00:00:00

abstract：:Class-V myosin proceeds along actin filaments with large ( approximately 36 nm) steps. Myosin-V has two heads, each of which consists of a motor domain and a long (23 nm) neck domain. In accordance with the widely accepted lever-arm model, it was suggested that myosin-V steps to successive (36 nm) target zones along t...

journal_title：Nature

authors： Tanaka H,Homma K,Iwane AH,Katayama E,Ikebe R,Saito J,Yanagida T,Ikebe M

更新日期：2002-01-10 00:00:00

abstract：:A family of G-protein-coupled chemoattractant receptors is known to mediate the transport and activation of neutrophils and macrophages This family includes receptors for chemokines, such as interleukin-8, bacterial formylated peptides, platelet-activating factor, leukotriene B4, and the complement anaphylatoxins. The...

journal_title：Nature

authors： Höpken UE,Lu B,Gerard NP,Gerard C

更新日期：1996-09-05 00:00:00

abstract：:There seems a real prospect that one of the infectious scourges of the past half century will not persist much beyond the present century, but polio will be only the second infection of human beings to be eradicated. Many more remain. ...

journal_title：Nature

authors：

更新日期：1995-04-20 00:00:00

abstract：:To ensure cell survival, it is essential that the ubiquitous pro-apoptotic machinery is kept quiescent. As death is irreversible, cells must continually integrate developmental information with regulatory inputs to control the switch between repressing and activating apoptosis. Inappropriate activation or suppression ...

journal_title：Nature

authors： Bloss TA,Witze ES,Rothman JH

更新日期：2003-08-28 00:00:00