Mice lacking the M3 muscarinic acetylcholine receptor are hypophagic and lean.

abstract：:Processes such as the scattering of alpha particles ((4)He), the triple-alpha reaction, and alpha capture play a major role in stellar nucleosynthesis. In particular, alpha capture on carbon determines the ratio of carbon to oxygen during helium burning, and affects subsequent carbon, neon, oxygen, and silicon burning...

journal_title：Nature

authors： Elhatisari S,Lee D,Rupak G,Epelbaum E,Krebs H,Lähde TA,Luu T,Meißner UG

更新日期：2015-12-03 00:00:00

abstract：:Sleep has been assumed to be necessary for development and to be a vital function in mammals and other animals. However, Lyamin et al. claim that in bottlenose dolphins (Tursiops truncatus) and killer whales (Orcinus orca), neonates and their mothers show almost no sleep behaviour for the first month after birth; this...

journal_title：Nature

authors： Sekiguchi Y,Arai K,Kohshima S

更新日期：2006-06-22 00:00:00

abstract：:Homoiotherms, for example mammals, regulate their body temperature with physiological responses such as a change of metabolic rate and sweating. In contrast, the body temperature of poikilotherms, for example Drosophila, is the result of heat exchange with the surrounding environment as a result of the large ratio of ...

journal_title：Nature

authors： Hong ST,Bang S,Hyun S,Kang J,Jeong K,Paik D,Chung J,Kim J

更新日期：2008-08-07 00:00:00

abstract：:The vasa gene product of Drosophila melanogaster is required only in the female germ line. Progeny of females homozygous for vasa mutations lack posterior structures and pole cells. Isolation and characterization of vasa genomic and complementary DNA clones show that the transcript is abundant in the female germ line ...

journal_title：Nature

authors： Lasko PF,Ashburner M

更新日期：1988-10-13 00:00:00

abstract：:We describe here a new view of primary visual cortex (V1) based on measurements of neural responses in V1 to patterns called 'illusory contours' (Fig. 1a, b). Detection of an object's boundary contours is a fundamental visual task. Boundary contours are defined by discontinuities not only in luminance and colour, but ...

journal_title：Nature

authors： Grosof DH,Shapley RM,Hawken MJ

更新日期：1993-10-07 00:00:00

abstract：:The Duchenne muscular dystrophy (DMD) locus has been localized to the short arm of the human X chromosome (Xp21) by detection of structural abnormalities and by genetic linkage studies. A library highly enriched for human DNA from Xp21 was constructed using DNA isolated from a male patient who had a visible deletion a...

journal_title：Nature

authors： Monaco AP,Bertelson CJ,Middlesworth W,Colletti CA,Aldridge J,Fischbeck KH,Bartlett R,Pericak-Vance MA,Roses AD,Kunkel LM

更新日期：1985-08-29 00:00:00

abstract：:Cocaine is a powerfully addictive substance and new strategies are needed to treat its abuse. Generating an active immunization to cocaine offers a means of blocking the actions of the drug by preventing it from entering the central nervous system, and should have fewer side effects than treatments based on manipulati...

journal_title：Nature

authors： Carrera MR,Ashley JA,Parsons LH,Wirsching P,Koob GF,Janda KD

更新日期：1995-12-14 00:00:00

abstract：:Japan's Ministry of Health will fund a major new heart transplantation project in an effort to resume heart transplants halted by a public outcry against the first such transplant 17 years ago. Opposition to organ donation, which has been attributed variously to Buddhist and Confucian views of the body and to Japanes...

journal_title：Nature

authors： Anderson A

更新日期：1985-01-31 00:00:00

abstract：:Excitatory synaptic transmission in the central nervous system is mediated primarily by the release of glutamate from presynaptic terminals onto postsynaptic channels gated by N-methyl-D-aspartate (NMDA) and alpha-amino-3-hydroxy-5-methylisoxazole-4-propionate (AMPA) receptors. The myriad intracellular responses arisi...

journal_title：Nature

authors： Wang Y,Small DL,Stanimirovic DB,Morley P,Durkin JP

更新日期：1997-10-02 00:00:00

abstract：:The Ran proteins constitute a distinct branch of the superfamily of Ras-related GTP-binding proteins which function as molecular switches cycling between GTP-bound 'on' and GDP-bound 'off' states. Ran is located predominantly in the nucleus of eukaryotic cells and is involved in the nuclear import of proteins as well ...

journal_title：Nature

authors： Scheffzek K,Klebe C,Fritz-Wolf K,Kabsch W,Wittinghofer A

更新日期：1995-03-23 00:00:00

abstract：:Brosnan and de Waal report that capuchin monkeys show evidence of a sense of fairness or 'inequity aversion' because they rejected a less preferred reward when they saw a partner monkey receive a preferred reward for the same task. However, this does not show that monkeys are averse to inequity, only that they reject ...

journal_title：Nature

authors： Wynne CD

更新日期：2004-03-11 00:00:00

abstract：:A powerful way to discover key genes with causal roles in oncogenesis is to identify genomic regions that undergo frequent alteration in human cancers. Here we present high-resolution analyses of somatic copy-number alterations (SCNAs) from 3,131 cancer specimens, belonging largely to 26 histological types. We identif...

journal_title：Nature

authors： Beroukhim R,Mermel CH,Porter D,Wei G,Raychaudhuri S,Donovan J,Barretina J,Boehm JS,Dobson J,Urashima M,Mc Henry KT,Pinchback RM,Ligon AH,Cho YJ,Haery L,Greulich H,Reich M,Winckler W,Lawrence MS,Weir BA,Tanaka KE,

更新日期：2010-02-18 00:00:00

abstract：:The spacing of opening-mode fractures in layered materials--such as certain sedimentary rocks and laminated engineering materials--is often proportional to the thickness of the fractured layer. Experimental studies of this phenomenon show that the spacing initially decreases as extensional strain increases in the dire...

journal_title：Nature

authors： Bai T,Pollard DD,Gao H

更新日期：2000-02-17 00:00:00

abstract：:How diverse cell fates and complex forms emerge and feed back to each other to sculpt functional organs remains unclear. In the developing heart, the myocardium transitions from a simple epithelium to an intricate tissue that consists of distinct layers: the outer compact and inner trabecular layers. Defects in this p...

journal_title：Nature

authors： Priya R,Allanki S,Gentile A,Mansingh S,Uribe V,Maischein HM,Stainier DYR

更新日期：2020-12-01 00:00:00

abstract：:Population-level analyses often use average quantities to describe heterogeneous systems, particularly when variation does not arise from identifiable groups. A prominent example, central to our current understanding of epidemic spread, is the basic reproductive number, R(0), which is defined as the mean number of inf...

journal_title：Nature

authors： Lloyd-Smith JO,Schreiber SJ,Kopp PE,Getz WM

更新日期：2005-11-17 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：:Haematopoietic stem cells drive blood production, but their population size and lifetime dynamics have not been quantified directly in humans. Here we identified 129,582 spontaneous, genome-wide somatic mutations in 140 single-cell-derived haematopoietic stem and progenitor colonies from a healthy 59-year-old man and ...

journal_title：Nature

authors： Lee-Six H,Øbro NF,Shepherd MS,Grossmann S,Dawson K,Belmonte M,Osborne RJ,Huntly BJP,Martincorena I,Anderson E,O'Neill L,Stratton MR,Laurenti E,Green AR,Kent DG,Campbell PJ

更新日期：2018-09-01 00:00:00

abstract：:In mammals, one of the most pronounced consequences of viral infection is the induction of type I interferons, cytokines with potent antiviral activity. Schlafen (Slfn) genes are a subset of interferon-stimulated early response genes (ISGs) that are also induced directly by pathogens via the interferon regulatory fact...

journal_title：Nature

authors： Li M,Kao E,Gao X,Sandig H,Limmer K,Pavon-Eternod M,Jones TE,Landry S,Pan T,Weitzman MD,David M

更新日期：2012-11-01 00:00:00

abstract：:The genome of the lower eukaryote Dictyostelium discoideum comprises six chromosomes. Here we report the sequence of the largest, chromosome 2, which at 8 megabases (Mb) represents about 25% of the genome. Despite an A + T content of nearly 80%, the chromosome codes for 2,799 predicted protein coding genes and 73 tran...

journal_title：Nature

authors： Glöckner G,Eichinger L,Szafranski K,Pachebat JA,Bankier AT,Dear PH,Lehmann R,Baumgart C,Parra G,Abril JF,Guigó R,Kumpf K,Tunggal B,Cox E,Quail MA,Platzer M,Rosenthal A,Noegel AA,Dictyostelium Genome Sequencing Consort

更新日期：2002-07-04 00:00:00

abstract：:The Gamburtsev Subglacial Mountains are the least understood tectonic feature on Earth, because they are completely hidden beneath the East Antarctic Ice Sheet. Their high elevation and youthful Alpine topography, combined with their location on the East Antarctic craton, creates a paradox that has puzzled researchers...

journal_title：Nature

authors： Ferraccioli F,Finn CA,Jordan TA,Bell RE,Anderson LM,Damaske D

更新日期：2011-11-16 00:00:00

abstract：:The three-dimensional structure of the 66-amino acid cro repressor protein of bacteriophage lambda suggests how it binds to its operator DNA. We propose that a dimer of cro protein is bound to the B-form of DNA with the 2-fold axis of the dimer coincident with the 2-fold axis of DNA. A pair of 2-fold-related alpha-hel...

journal_title：Nature

authors： Anderson WF,Ohlendorf DH,Takeda Y,Matthews BW

更新日期：1981-04-30 00:00:00

abstract：:Initial studies of somatically acquired mutations in immunoglobulin V regions from hybridomas and myelomas that are not derived from joining aberrations, suggested a controlled and specific hypermutation process, because spontaneous mutation rates observed for other genes are extremely low. Some evidence for the idea ...

journal_title：Nature

authors： O'Brien RL,Brinster RL,Storb U

更新日期：1987-03-26 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：:D-type cyclins, in association with the cyclin-dependent kinases Cdk4 or Cdk6, promote progression through the G1 phase of the cell cycle by phosphorylating the retinoblastoma protein (RB). The activities of Cdk4 and Cdk6 are constrained by inhibitors such as p16, the product of the CDKN2 gene on human chromosome 9p21...

journal_title：Nature

authors： Lukas J,Parry D,Aagaard L,Mann DJ,Bartkova J,Strauss M,Peters G,Bartek J

更新日期：1995-06-08 00:00:00

abstract：:Recombination is the exchange of information between two homologous chromosomes during meiosis. The rate of recombination per nucleotide, which profoundly affects the evolution of chromosomal segments, is calculated by comparing genetic and physical maps. Human physical maps have been constructed using cytogenetics, o...

journal_title：Nature

authors： Yu A,Zhao C,Fan Y,Jang W,Mungall AJ,Deloukas P,Olsen A,Doggett NA,Ghebranious N,Broman KW,Weber JL

更新日期：2001-02-15 00:00:00

abstract：:Haem is essential for living organisms, functioning as a crucial element in the redox-sensitive reaction centre in haemproteins. During the biogenesis of these proteins, the haem cofactor is typically incorporated enzymatically into the haem pockets of the apo-haemprotein as the functionally indispensable prosthetic g...

journal_title：Nature

authors： Tang XD,Xu R,Reynolds MF,Garcia ML,Heinemann SH,Hoshi T

更新日期：2003-10-02 00:00:00

abstract：:Electromagnetically induced transparency is a quantum interference effect that permits the propagation of light through an otherwise opaque atomic medium; a 'coupling' laser is used to create the interference necessary to allow the transmission of resonant pulses from a 'probe' laser. This technique has been used to s...

journal_title：Nature

authors： Liu C,Dutton Z,Behroozi CH,Hau LV

更新日期：2001-01-25 00:00:00

abstract：:Endocytosis of the major histocompatibility complex (MHC)-encoded class I and class II molecules has been the subject of recent investigations. Class I molecules, which are key elements in T cell-mediated cytotoxicity, are differentially endocytosed by different cell types. Fibroblasts internalize their class I molecu...

journal_title：Nature

authors： Machy P,Truneh A,Gennaro D,Hoffstein S

更新日期：1987-08-20 00:00:00

abstract：:The maturation of RAS GTPases and approximately 200 other cellular CAAX proteins involves three enzymatic steps: addition of a farnesyl or geranylgeranyl prenyl lipid to the cysteine (C) in the C-terminal CAAX motif, proteolytic cleavage of the AAX residues and methylation of the exposed prenylcysteine residue at its ...

journal_title：Nature

authors： Diver MM,Pedi L,Koide A,Koide S,Long SB

更新日期：2018-01-25 00:00:00

abstract：:Many fermentative bacteria obtain energy for growth by reactions in which the change in free energy (DeltaG') is less than that needed to synthesize ATP. These bacteria couple substrate metabolism directly to ATP synthesis, however, by classical phosphoryl transfer reactions. An explanation for the energy economy of t...

journal_title：Nature

authors： Jackson BE,McInerney MJ

更新日期：2002-01-24 00:00:00