Spatial distribution of cellular protein binding to retinoic acid in the chick limb bud.

abstract：:The realization of superfluidity in a dilute gas of fermionic atoms, analogous to superconductivity in metals, represents a long-standing goal of ultracold gas research. In such a fermionic superfluid, it should be possible to adjust the interaction strength and tune the system continuously between two limits: a Barde...

journal_title：Nature

authors： Greiner M,Regal CA,Jin DS

更新日期：2003-12-04 00:00:00

abstract：:The most basic objection to human embryonic stem (ES) cell research is rooted in the fact that ES cell derivation deprives embryos of any further potential to develop into a complete human being. ES cell lines are conventionally isolated from the inner cell mass of blastocysts and, in a few instances, from cleavage st...

journal_title：Nature

authors： Chung Y,Klimanskaya I,Becker S,Marh J,Lu SJ,Johnson J,Meisner L,Lanza R

更新日期：2006-01-12 00:00:00

abstract：:Skeletal muscles consist of motor units which may differ considerably in contractile properties and types of usage. Some units participate mainly in relatively rare, quick movements and contract rapidly and are easily fatigued (type FF); others contribute to the maintenance of posture and hence contract slowly and are...

journal_title：Nature

authors： Hennig R,Lømo T

更新日期：1985-03-14 00:00:00

abstract：:Totipotent germline blastomeres in Caenorhabditis elegans contain, but do not respond to, factors that promote somatic differentiation in other embryonic cells. Mutations in the maternal gene pie-1 result in the germline blastomeres adopting somatic cell fates. Here we show that pie-1 encodes a nuclear protein, PIE-1,...

journal_title：Nature

authors： Mello CC,Schubert C,Draper B,Zhang W,Lobel R,Priess JR

更新日期：1996-08-22 00:00:00

abstract：:The human AIDS viruses human immunodeficiency virus type 1 (HIV-1) and type 2 (HIV-2) represent cross-species (zoonotic) infections. Although the primate reservoir of HIV-2 has been clearly identified as the sooty mangabey (Cercocebus atys), the origin of HIV-1 remains uncertain. Viruses related to HIV-1 have been iso...

journal_title：Nature

authors： Gao F,Bailes E,Robertson DL,Chen Y,Rodenburg CM,Michael SF,Cummins LB,Arthur LO,Peeters M,Shaw GM,Sharp PM,Hahn BH

更新日期：1999-02-04 00:00:00

abstract：:The gal operon of Escherichia coli is controlled by two independent promotors--one is activated and the other inhibited by cyclic AMP and cyclic AMP receptor protein. The two promotors are modulated, however, by the same operator locus and receptor protein. ...

journal_title：Nature

authors： Adhya S,Miller W

更新日期：1979-06-07 00:00:00

abstract：:The mitotic recombination behaviour of a duplication of the his4 region on chromosome III in the yeast Saccharomyces cerevisiae was studied. The major recombination event between the duplicated segments is gene conversion unassociated with reciprocal recombination. The rad52-1 mutation preferentially decreases mitotic...

journal_title：Nature

authors： Jackson JA,Fink GR

更新日期：1981-07-23 00:00:00

abstract：:Lake Victoria, together with its satellite lakes, harbours roughly 200 endemic forms of cichlid fishes that are classified as 'haplochromines' and yet the lake system is less than a million years old. This 'flock' has attracted attention because of the possibility that it evolved within the lake from one ancestral spe...

journal_title：Nature

authors： Meyer A,Kocher TD,Basasibwaki P,Wilson AC

更新日期：1990-10-11 00:00:00

abstract：:Adenylyl cyclase is the prototypical second messenger generator. Nearly all of the eight cloned adenylyl cyclases are regulated by one or other arm of the phospholipase C pathway. Functional and ultrastructural investigations have shown that adenylyl cyclases are intimately associated with sites of calcium ion entry i...

journal_title：Nature

authors： Cooper DM,Mons N,Karpen JW

更新日期：1995-03-30 00:00:00

abstract：:Runs of adenines (adenine tracts) have been implicated as the main determinant of sequence-directed DNA bending. The most widely used experimental test for bending relies on the observation that bent DNA migrates more slowly than straight DNA on a polyacrylamide electrophoresis gel. It was shown recently that the poly...

journal_title：Nature

authors： Burkhoff AM,Tullius TD

更新日期：1988-02-04 00:00:00

abstract：:Deposition of amyoid-beta peptide in the central nervous system is a hallmark of Alzheimer's disease and a possible cause of neurodegeneration. The factors that initiate or promote deposition of amyloid-beta peptide are not known. The transforming growth factor TGF-beta1 plays a central role in the response of the bra...

journal_title：Nature

authors： Wyss-Coray T,Masliah E,Mallory M,McConlogue L,Johnson-Wood K,Lin C,Mucke L

更新日期：1997-10-09 00:00:00

abstract：:Transection of a sensory nerve in adults results in profound abnormalities in sensory perception, even if the severed nerve is surgically repaired to facilitate accurate nerve regeneration. In marked contrast, fewer perceptual errors follow nerve transection and surgical repair in children. The basis for this superior...

journal_title：Nature

authors： Florence SL,Jain N,Pospichal MW,Beck PD,Sly DL,Kaas JH

更新日期：1996-05-02 00:00:00

abstract：: ...

journal_title：Nature

authors：

更新日期：2018-11-01 00:00:00

abstract：:Cytotoxic T lymphocytes (CTLs) detect and destroy cells displaying class I molecules of the major histocompatibility complex (MHC) that present oligopeptides derived from aberrant self or foreign proteins. Most class I peptide ligands are created from proteins that are degraded by proteasomes and transported, by the t...

journal_title：Nature

authors： Hanada K,Yewdell JW,Yang JC

更新日期：2004-01-15 00:00:00

abstract：:Homeostatic mechanisms in mammals respond to hormones and nutrients to maintain blood glucose levels within a narrow range. Caloric restriction causes many changes in glucose metabolism and extends lifespan; however, how this metabolism is connected to the ageing process is largely unknown. We show here that the Sir2 ...

journal_title：Nature

authors： Rodgers JT,Lerin C,Haas W,Gygi SP,Spiegelman BM,Puigserver P

更新日期：2005-03-03 00:00:00

abstract：:Regulatory T cells (Treg cells), a distinct subset of CD4+ T cells, are necessary for the maintenance of immune self-tolerance and homeostasis1,2. Recent studies have demonstrated that Treg cells exhibit a unique metabolic profile, characterized by an increase in mitochondrial metabolism relative to other CD4+ effecto...

journal_title：Nature

authors： Weinberg SE,Singer BD,Steinert EM,Martinez CA,Mehta MM,Martínez-Reyes I,Gao P,Helmin KA,Abdala-Valencia H,Sena LA,Schumacker PT,Turka LA,Chandel NS

更新日期：2019-01-01 00:00:00

abstract：:The rod and cone transducins are specific G proteins originally thought to be present only in photoreceptor cells of the vertebrate retina. Transducins convert light stimulation of photoreceptor opsins into activation of cyclic GMP phosphodiesterase (reviewed in refs. 5-7). A transducin-like G protein, gustducin, has ...

journal_title：Nature

authors： Ruiz-Avila L,McLaughlin SK,Wildman D,McKinnon PJ,Robichon A,Spickofsky N,Margolskee RF

更新日期：1995-07-06 00:00:00

abstract：:A report adopted by the Council of Europe lists eight recommendations on the legal, ethical, and social issues raised by recombinant DNA research. The legislators stressed that the right to a "genetic inheritance free from any form of engineering" should be included in the European Human Rights Convention, and that s...

journal_title：Nature

authors： Becker J

更新日期：1982-02-18 00:00:00

abstract：:Many-body systems in nature exhibit complexity and self-organization arising from seemingly simple laws. For example, the long-range Coulomb interaction between electrical charges has a simple form, yet is responsible for a plethora of bound states in matter, ranging from the hydrogen atom to complex biochemical struc...

journal_title：Nature

authors： Kaindl RA,Carnahan MA,Hägele D,Lövenich R,Chemla DS

更新日期：2003-06-12 00:00:00

abstract：:Most of the progress in human culture has required the exploitation of energy resources. About 100 years ago, the major source of energy shifted from recent solar to fossil hydrocarbons, including liquid and gaseous petroleum. Technology has generally led to a greater use of hydrocarbon fuels for most human activities...

journal_title：Nature

authors： Hall C,Tharakan P,Hallock J,Cleveland C,Jefferson M

更新日期：2003-11-20 00:00:00

abstract：:Aneuploidy, referring here to genome contents characterized by abnormal numbers of chromosomes, has been associated with developmental defects, cancer and adaptive evolution in experimental organisms. However, it remains unresolved how aneuploidy impacts gene expression and whether aneuploidy could directly bring abou...

journal_title：Nature

authors： Pavelka N,Rancati G,Zhu J,Bradford WD,Saraf A,Florens L,Sanderson BW,Hattem GL,Li R

更新日期：2010-11-11 00:00:00

abstract：:Mov13 mice carry a single Moloney murine leukaemia virus (M-MuLV) proviral copy in the first intron of the alpha 1(I) collagen gene. Virus insertion interferes with the synthesis of stable alpha 1(I) collagen messenger RNA and causes a recessive lethal mutation. The virus insertion has induced changes of the methylati...

journal_title：Nature

authors： Hartung S,Jaenisch R,Breindl M

更新日期：1986-03-27 00:00:00

abstract：:Humans and cats can localize a sound source accurately if its spectrum is fairly broad and flat, as is typical of most natural sounds. However, if sounds are filtered to reduce the width of the spectrum, they result in illusions of sources that are very different from the actual locations, particularly in the up/down ...

journal_title：Nature

authors： Xu L,Furukawa S,Middlebrooks JC

更新日期：1999-06-17 00:00:00

abstract：:The most recent Ebola virus outbreak in West Africa, which was unprecedented in the number of cases and fatalities, geographic distribution, and number of nations affected, highlights the need for safe, effective, and readily available antiviral agents for treatment and prevention of acute Ebola virus (EBOV) disease (...

journal_title：Nature

authors： Warren TK,Jordan R,Lo MK,Ray AS,Mackman RL,Soloveva V,Siegel D,Perron M,Bannister R,Hui HC,Larson N,Strickley R,Wells J,Stuthman KS,Van Tongeren SA,Garza NL,Donnelly G,Shurtleff AC,Retterer CJ,Gharaibeh D,Zamani R

更新日期：2016-03-17 00:00:00

abstract：:Over the past eight hundred thousand years, glacial-interglacial cycles oscillated with a period of one hundred thousand years ('100k world'1). Ice core and ocean sediment data have shown that atmospheric carbon dioxide, Antarctic temperature, deep ocean temperature, and global ice volume correlated strongly with each...

journal_title：Nature

authors： Yan Y,Bender ML,Brook EJ,Clifford HM,Kemeny PC,Kurbatov AV,Mackay S,Mayewski PA,Ng J,Severinghaus JP,Higgins JA

更新日期：2019-10-01 00:00:00

abstract：:Cyclic ADP-ribose (cADPR) is a newly identified nucleotide which can release calcium from a variety of cells, suggesting it is a messenger for mobilizing internal Ca2+ stores. Its cyclic structure has now been confirmed by X-ray crystallography. Available results are consistent with it being a modulator of Ca(2+)-indu...

journal_title：Nature

authors： Lee HC,Aarhus R,Graeff R,Gurnack ME,Walseth TF

更新日期：1994-07-28 00:00:00

abstract：:Cancer genetics has for many years focused on mutational events that have their primary effect within the cancer cell. Recently that focus has widened, with evidence of the importance of epigenetic events and of cellular interactions in cancer development. The role of common genetic variation in determining the range ...

journal_title：Nature

authors： Ponder BA

更新日期：2001-05-17 00:00:00

abstract：:Climate models with increased levels of carbon dioxide predict that global warming causes heating in the tropics, but investigations of ancient climates based on palaeodata have generally indicated cool tropical temperatures during supposed greenhouse episodes. For example, in the Late Cretaceous and Eocene epochs the...

journal_title：Nature

authors： Pearson PN,Ditchfield PW,Singano J,Harcourt-Brown KG,Nicholas CJ,Olsson RK,Shackleton NJ,Hall MA

更新日期：2001-10-04 00:00:00

abstract：:Visible-light absorption and transport of the resultant electronic excitations to a reaction centre through Förster resonance energy transfer1-3 (FRET) are critical to the operation of biological light-harvesting systems4, and are used in various artificial systems made of synthetic dyes5, polymers6 or nanodots7,8. Th...

journal_title：Nature

authors： Lau JA,Chen L,Choudhury A,Schwarzer D,Verma VB,Wodtke AM

更新日期：2021-01-01 00:00:00

abstract：:Functional studies seem now to confirm, as first suggested by E. Geoffroy Saint-Hilaire in 1822, that there was an inversion of the dorsoventral axis during animal evolution. A conserved system of extracellular signals provides positional information for the allocation of embryonic cells to specific tissue types both ...

journal_title：Nature

authors： De Robertis EM,Sasai Y

更新日期：1996-03-07 00:00:00