Millisecond activation of transducin in the cyclic nucleotide cascade of vision.

abstract：:The 3-A structure of DNA-binding protein II, which exhibits histone-like properties in bacteria, has been determined. The molecule is dimeric and appears to bind to the phosphate backbone of DNA through two symmetry-related arms. A mechanism by which the protein induces DNA supercoiling is proposed. ...

journal_title：Nature

authors： Tanaka I,Appelt K,Dijk J,White SW,Wilson KS

更新日期：1984-08-02 00:00:00

abstract：:Contraction of cardiac muscle depends on a transient rise of intracellular calcium concentration ([Ca2+]i) which is initiated by the action potential. It has, however, also been suggested that [Ca2+]i can fluctuate in the absence of changes in membrane potential. The evidence for this is indirect and comes from observ...

journal_title：Nature

authors： Orchard CH,Eisner DA,Allen DG

更新日期：1983-08-25 00:00:00

abstract：:Susceptibility of rodent cells to infection by ecotropic murine leukaemia viruses (MuLV) is determined by binding of the virus envelope to a membrane receptor that has multiple membrane-spanning domains. Cells infected by ecotropic MuLV synthesize envelope protein, gp70, which binds to this receptor, thereby preventin...

journal_title：Nature

authors： Kim JW,Closs EI,Albritton LM,Cunningham JM

更新日期：1991-08-22 00:00:00

abstract：:Cyclic GMP-AMP synthase (cGAS) is an innate immune sensor for cytosolic microbial DNA1. After binding DNA, cGAS synthesizes the messenger 2'3'-cyclic GMP-AMP (cGAMP)2-4, which triggers cell-autonomous defence and the production of type I interferons and pro-inflammatory cytokines via the activation of STING5. In addit...

journal_title：Nature

authors： Michalski S,de Oliveira Mann CC,Stafford CA,Witte G,Bartho J,Lammens K,Hornung V,Hopfner KP

更新日期：2020-11-01 00:00:00

abstract：:Connectivity in the cortex is organized at multiple scales, suggesting that scale-dependent correlated activity is particularly important for understanding the behaviour of sensory cortices and their function in stimulus encoding. We analysed the scale-dependent structure of cortical interactions by using maximum entr...

journal_title：Nature

authors： Ohiorhenuan IE,Mechler F,Purpura KP,Schmid AM,Hu Q,Victor JD

更新日期：2010-07-29 00:00:00

abstract：:Insulin is the primary hormone involved in glucose homeostasis, and impairment of insulin action and/or secretion has a critical role in the pathogenesis of diabetes mellitus. Type-II SH2-domain-containing inositol 5-phosphatase, or 'SHIP2', is a member of the inositol polyphosphate 5-phosphatase family. In vitro stud...

journal_title：Nature

authors： Clément S,Krause U,Desmedt F,Tanti JF,Behrends J,Pesesse X,Sasaki T,Penninger J,Doherty M,Malaisse W,Dumont JE,Le Marchand-Brustel Y,Erneux C,Hue L,Schurmans S

更新日期：2001-01-04 00:00:00

abstract：:The hydrosulphide ion (HS(-)) and its undissociated form, hydrogen sulphide (H(2)S), which are believed to have been critical to the origin of life on Earth, remain important in physiology and cellular signalling. As a major metabolite in anaerobic bacterial growth, hydrogen sulphide is a product of both assimilatory ...

journal_title：Nature

authors： Czyzewski BK,Wang DN

更新日期：2012-03-11 00:00:00

abstract：:Recently, a class of protein antigens of high relative molecular mass (Mt) which can induce protective immunity against blood-stage malaria has been identified. In Plasmodium falciparum the protein has a Mr of approximately 195,000 (P195). It is the precursor of three proteins of Mr 83,000 (83K), 42K and 19K which are...

journal_title：Nature

authors： Holder AA,Lockyer MJ,Odink KG,Sandhu JS,Riveros-Moreno V,Nicholls SC,Hillman Y,Davey LS,Tizard ML,Schwarz RT

更新日期：1985-09-19 00:00:00

abstract：:The question of whether DNA is able to transport electrons has attracted much interest, particularly as this ability may play a role as a repair mechanism after radiation damage to the DNA helix. Experiments addressing DNA conductivity have involved a large number of DNA strands doped with intercalated donor and accep...

journal_title：Nature

authors： Fink HW,Schönenberger C

更新日期：1999-04-01 00:00:00

abstract：:Surgical, pharmacological and genetic lesion studies have revealed distinct anatomical sites involved with different forms of learning. Studies of patients with localized brain damage and work in rodent model systems, for example, have shown that the hippocampal formation participates in acquisition of declarative tas...

journal_title：Nature

authors： Dubnau J,Grady L,Kitamoto T,Tully T

更新日期：2001-05-24 00:00:00

abstract：:Humans differ from other primates in their significantly lengthened growth period. The persistence of a fetal pattern of brain growth after birth is another important feature of human development. Here we present the results of an analysis of the 1.8-million-year-old Mojokerto child (Perning 1, Java), the only well pr...

journal_title：Nature

authors： Coqueugniot H,Hublin JJ,Veillon F,Houët F,Jacob T

更新日期：2004-09-16 00:00:00

abstract：:Secretory antibodies of the IgA class (sIgA) are thought to have an important role in the defence against bacteria at mucosal surfaces--the level at which the infectious agents first come into contact with the host. However, the mechanism by which sIgA exert their antibacterial activity is still a matter of debate. Af...

journal_title：Nature

authors： Tagliabue A,Nencioni L,Villa L,Keren DF,Lowell GH,Boraschi D

更新日期：1983-11-10 00:00:00

abstract：:Phytoplankton size structure is acknowledged as a fundamental property determining energy flow through 'microbial' or 'herbivore' pathways. The balance between these two pathways determines the ability of the ecosystem to recycle carbon within the upper layer or to export it to the ocean interior. Small cells are usua...

journal_title：Nature

authors： Rodríguez J,Tintoré J,Allen JT,Blanco JM,Gomis D,Reul A,Ruiz J,Rodríguez V,Echevarría F,Jiménez-Gómez F

更新日期：2001-03-15 00:00:00

abstract：:Serious, and occasionally fatal, anaphylactic-like (anaphylactoid) reactions may occur when a patient is exposed to a drug for the first time. Apart from the penicillins, nothing is known of the nature of antigenic or sensitizing drug determinants and, as yet, there is no evidence for the involvement of IgE antibodies...

journal_title：Nature

authors： Baldo BA,Fisher MM

更新日期：1983-11-17 00:00:00

abstract：:Neuropeptide Y (NPY) has a number of functions in mammalian physiology. Here we identify a role for NPY in promoting proliferation of postnatal neuronal precursor cells. NPY is synthesized in the postnatal olfactory epithelium by sustentacular cells, previously proposed to function only in structural support. Mice wit...

journal_title：Nature

authors： Hansel DE,Eipper BA,Ronnett GV

更新日期：2001-04-19 00:00:00

abstract：:The TGF-beta/activin/BMP cytokine family signals through serine/threonine kinase receptors, but how the receptors transduce the signal is unknown. The Mad (Mothers against decapentaplegic) gene from Drosophila and the related Sma genes from Caenorhabditis elegans have been genetically implicated in signalling by membe...

journal_title：Nature

authors： Liu F,Hata A,Baker JC,Doody J,Cárcamo J,Harland RM,Massagué J

更新日期：1996-06-13 00:00:00

abstract：:Curare has long been regarded as a typical competitive antagonist of acetylcholine (ACh) at the vertebrate neuromuscular junction. Recently, however, it has been shown that curare can also block the channels opened by ACh at the frog neuromuscular junction as well as on rat and Aplysia neurones; moreover, curare is ab...

journal_title：Nature

authors： Trautmann A

更新日期：1982-07-15 00:00:00

abstract：:Mitochondria, organelles specialized in energy conservation reactions in eukaryotic cells, have evolved from eubacteria-like endosymbionts whose closest known relatives are the rickettsial group of alpha-proteobacteria. Because characterized mitochondrial genomes vary markedly in structure, it has been impossible to i...

journal_title：Nature

authors： Lang BF,Burger G,O'Kelly CJ,Cedergren R,Golding GB,Lemieux C,Sankoff D,Turmel M,Gray MW

更新日期：1997-05-29 00:00:00

abstract：:The rheological properties of rock salt are of fundamental importance in predicting the long-term evolution of salt-based radioactive waste repositories and strategic storage caverns, and in modelling the formation of salt diapirs and associated oil traps1,2. The short-term, high-stress rheology of rock salt is well k...

journal_title：Nature

authors： Urai JL,Spiers CJ,Zwart HJ,Lister GS

更新日期：1986-12-11 00:00:00

abstract：:The effect of ions on the light-sensitive current of retinal rods was studied by sucking the inner segment into a tightly fitting capillary with the outer segment projecting into a flowing solution. This new method showed that the light-sensitive pathway, in which Na+ is the normal carrier of current, has an ionic sel...

journal_title：Nature

authors： Yau KW,McNaughton PA,Hodgkin AL

更新日期：1981-08-06 00:00:00

abstract：:Cryptochromes are blue/ultraviolet-A light receptors that mediate various light responses in plants and animals. But the initial photochemical reaction of cryptochrome is still unclear. For example, although most photoreceptors are known to undergo light-dependent protein modification such as phosphorylation, no blue-...

journal_title：Nature

authors： Shalitin D,Yang H,Mockler TC,Maymon M,Guo H,Whitelam GC,Lin C

更新日期：2002-06-13 00:00:00

abstract：:The main asteroid belt lies between the orbits of Mars and Jupiter, but the region is not uniformly filled with asteroids. There are gaps, known as the Kirkwood gaps, in distinct locations that are associated with orbital resonances with the giant planets; asteroids placed in these locations will follow chaotic orbits...

journal_title：Nature

authors： Minton DA,Malhotra R

更新日期：2009-02-26 00:00:00

abstract：:In contrast to activated CD4+ T cells, resting human CD4+ T cells circulating in blood are highly resistant to infection with human immunodeficiency virus (HIV). Whether the inability of HIV to infect these resting CD4+ T cells is due to the lack of a key factor, or alternatively reflects the presence of an efficient ...

journal_title：Nature

authors： Chiu YL,Soros VB,Kreisberg JF,Stopak K,Yonemoto W,Greene WC

更新日期：2005-05-05 00:00:00

abstract：:Rho is the essential RNA helicase that sets the borders between transcription units and adjusts transcriptional yield to translational needs in bacteria. Although Rho was the first termination factor to be discovered, the actual mechanism by which it reaches and disrupts the elongation complex (EC) is unknown. Here we...

journal_title：Nature

authors： Epshtein V,Dutta D,Wade J,Nudler E

更新日期：2010-01-14 00:00:00

abstract：:T lymphocytes of the alpha/beta T-cell receptor (TCR) lineage mature in the thymus, where they undergo a series of differentiation, expansion and selection events. For normal T-cell ontogeny to occur, thymocytes must interact physically with cortical and medullary thymic stroma cells. In parallel, interactions of the ...

journal_title：Nature

authors： Holländer GA,Wang B,Nichogiannopoulou A,Platenburg PP,van Ewijk W,Burakoff SJ,Gutierrez-Ramos JC,Terhorst C

更新日期：1995-01-26 00:00:00

abstract：:For hundreds of years, scientists have tracked the changing appearance of Mars, first by hand drawings and later by photographs. Because of this historical record, many classical albedo patterns have long been known to shift in appearance over time. Decadal variations of the martian surface albedo are generally attrib...

journal_title：Nature

authors： Fenton LK,Geissler PE,Haberle RM

更新日期：2007-04-05 00:00:00

abstract：:Molecular cloning and DNA sequencing have yielded considerable structural information about proenkephalin. All previously characterized intermediate peptides of the enkephalin pathways in bovine adrenal medulla have now been aligned into an unambiguous primary structure. Two basic amino acid residues serve as processi...

journal_title：Nature

authors： Gubler U,Seeburg P,Hoffman BJ,Gage LP,Udenfriend S

更新日期：1982-01-21 00:00:00

abstract：:A rapid decrease in shear velocity in the suboceanic mantle is used to infer the thickness of the lithosphere. It is proposed that new and highly precise group velocity data constrain the solutions and imply a thickness near 70 km. ...

journal_title：Nature

authors： Kanamori H,Press F

更新日期：1970-04-25 00:00:00

abstract：:Fast radio bursts (FRBs) are millisecond-duration radio transients1,2 of unknown origin. Two possible mechanisms that could generate extremely coherent emission from FRBs invoke neutron star magnetospheres3-5 or relativistic shocks far from the central energy source6-8. Detailed polarization observations may help us t...

journal_title：Nature

authors： Luo R,Wang BJ,Men YP,Zhang CF,Jiang JC,Xu H,Wang WY,Lee KJ,Han JL,Zhang B,Caballero RN,Chen MZ,Chen XL,Gan HQ,Guo YJ,Hao LF,Huang YX,Jiang P,Li H,Li J,Li ZX,Luo JT,Pan J,Pei X,Qian L,Sun JH,Wang M,Wa

更新日期：2020-10-01 00:00:00

abstract：:Although the sex-determining gene Sry has been identified in mammals, no comparable genes have been found in non-mammalian vertebrates. Here, we used recombinant breakpoint analysis to restrict the sex-determining region in medaka fish (Oryzias latipes) to a 530-kilobase (kb) stretch of the Y chromosome. Deletion anal...

journal_title：Nature

authors： Matsuda M,Nagahama Y,Shinomiya A,Sato T,Matsuda C,Kobayashi T,Morrey CE,Shibata N,Asakawa S,Shimizu N,Hori H,Hamaguchi S,Sakaizumi M

更新日期：2002-05-30 00:00:00