Down's syndrome-like skeletal abnormalities in Ets2 transgenic mice.

abstract：:In the unactivated Limulus sperm, a 60- micro m-long bundle of actin filaments crosslinked by the protein scruin is bent and twisted into a coil around the base of the nucleus. At fertilization, the bundle uncoils and fully extends in five seconds to support a finger of membrane known as the acrosomal process. This bi...

journal_title：Nature

authors： Schmid MF,Sherman MB,Matsudaira P,Chiu W

更新日期：2004-09-02 00:00:00

abstract：:Fresnel lenses allow almost perfect imaging in widely different circumstances, but their focus is perfect only for a single wavelength. Wang et al. have shown how the effective bandpass may be widened for X-ray microscopy by using a compound diffractive/refractive lens near to an absorption edge. A compound lens has a...

journal_title：Nature

authors： Skinner G,Gorenstein P

更新日期：2003-11-20 00:00:00

abstract：:Nitrogen is an essential nutrient for all organisms that must have been available since the origin of life. Abiotic processes including hydrothermal reduction, photochemical reactions, or lightning discharge could have converted atmospheric N2 into assimilable NH4(+), HCN, or NOx species, collectively termed fixed nit...

journal_title：Nature

authors： Stüeken EE,Buick R,Guy BM,Koehler MC

更新日期：2015-04-30 00:00:00

abstract：:Somatic cell nuclear transfer (SCNT) into enucleated oocytes has emerged as a technique that can be used to derive mouse embryonic stem cell lines with defined genotypes. In this issue Byrne et al. report the derivation of two SCNT Rhesus macaca male stem cell lines designated CRES-1 and CRES-2. Molecular studies deta...

journal_title：Nature

authors： Cram DS,Song B,Trounson AO

更新日期：2007-11-22 00:00:00

abstract：:Mutational activation of BRAF is the most prevalent genetic alteration in human melanoma, with ≥50% of tumours expressing the BRAF(V600E) oncoprotein. Moreover, the marked tumour regression and improved survival of late-stage BRAF-mutated melanoma patients in response to treatment with vemurafenib demonstrates the ess...

journal_title：Nature

authors： Das Thakur M,Salangsang F,Landman AS,Sellers WR,Pryer NK,Levesque MP,Dummer R,McMahon M,Stuart DD

更新日期：2013-02-14 00:00:00

abstract：:During fertilization, an egg and a sperm fuse to form a new embryo. Eggs develop from oocytes in a process called meiosis. Meiosis in human oocytes is highly error-prone, and defective eggs are the leading cause of pregnancy loss and several genetic disorders such as Down's syndrome. Which genes safeguard accurate pro...

journal_title：Nature

authors： Pfender S,Kuznetsov V,Pasternak M,Tischer T,Santhanam B,Schuh M

更新日期：2015-08-13 00:00:00

abstract：:There is evidence to suggest that components of archaebacteria are evolutionarily related to cognates in the eukaryotic cytosol. We postulated that the major heat-shock protein of the thermophilic archaebacterium, Sulfolobus shibatae, is a molecular chaperone and that it is related to an as-yet unidentified chaperone ...

journal_title：Nature

authors： Trent JD,Nimmesgern E,Wall JS,Hartl FU,Horwich AL

更新日期：1991-12-12 00:00:00

abstract：:The formation of condensed (compacted) protein phases is associated with a wide range of human disorders, such as eye cataracts, amyotrophic lateral sclerosis, sickle cell anaemia and Alzheimer's disease. However, condensed protein phases have their uses: as crystals, they are harnessed by structural biologists to elu...

journal_title：Nature

authors： Van Driessche AES,Van Gerven N,Bomans PHH,Joosten RRM,Friedrich H,Gil-Carton D,Sommerdijk NAJM,Sleutel M

更新日期：2018-04-04 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：:DNA fragments of chemically transformed and normal avian and murine cells induce transformation of NIH 3T3 mouse cells with low efficiencies. High molecular weight DNAs of cells transformed by DNA fragments induce transformation with high efficiencies in secondary transfection assays. It thus seems that endogenous tra...

journal_title：Nature

authors： Cooper GM,Okenquist S,Silverman L

更新日期：1980-04-03 00:00:00

abstract：:The discovery of the basis of genetic variation has opened inroads to understanding our history as a species. It has revealed the remarkable genetic similarity we share with other individuals as well as with our closest primate relatives. To understand what make us unique, both as individuals and as a species, we need...

journal_title：Nature

authors： Pääbo S

更新日期：2003-01-23 00:00:00

abstract：:The spatial organization of the genome is intimately linked to its biological function, yet our understanding of higher order genomic structure is coarse, fragmented and incomplete. In the nucleus of eukaryotic cells, interphase chromosomes occupy distinct chromosome territories, and numerous models have been proposed...

journal_title：Nature

authors： Dixon JR,Selvaraj S,Yue F,Kim A,Li Y,Shen Y,Hu M,Liu JS,Ren B

更新日期：2012-04-11 00:00:00

abstract：:Highly collimated parsec-scale jets, which are generally linked to the presence of an accretion disk, are commonly observed in low-mass young stellar objects. In the past two decades, a few of these jets have been directly (or indirectly) observed from higher-mass (larger than eight solar masses) young stellar objects...

journal_title：Nature

authors： McLeod AF,Reiter M,Kuiper R,Klaassen PD,Evans CJ

更新日期：2018-02-15 00:00:00

abstract：:The Southern Ocean is very important for the potential sequestration of carbon dioxide in the oceans and is expected to be vulnerable to changes in carbon export forced by anthropogenic climate warming. Annual phytoplankton blooms in seasonal ice zones are highly productive and are thought to contribute significantly ...

journal_title：Nature

authors： DiTullio GR,Grebmeier JM,Arrigo KR,Lizotte MP,Robinson DH,Leventer A,Barry JP,VanWoert ML,Dunbar RB

更新日期：2000-04-06 00:00:00

abstract：:Contamination of ground waters with water-soluble aromatic hydrocarbons, common components of petroleum pollution, often produces anoxic conditions under which microbial degradation of the aromatics is slow. Oxygen is often added to contaminated ground water to stimulate biodegradation, but this can be technically dif...

journal_title：Nature

authors： Lovley DR,Woodward JC,Chapelle FH

更新日期：1994-07-14 00:00:00

abstract：:Data collected at approximately 60 Global Positioning System (GPS) sites in southeast Asia show the crustal deformation caused by the 26 December 2004 Sumatra-Andaman earthquake at an unprecedented large scale. Small but significant co-seismic jumps are clearly detected more than 3,000 km from the earthquake epicentre...

journal_title：Nature

authors： Vigny C,Simons WJ,Abu S,Bamphenyu R,Satirapod C,Choosakul N,Subarya C,Socquet A,Omar K,Abidin HZ,Ambrosius BA

更新日期：2005-07-14 00:00:00

abstract：:Scanning probe microscopy is a versatile and powerful method that uses sharp tips to image, measure and manipulate matter at surfaces with atomic resolution. At cryogenic temperatures, scanning probe microscopy can even provide electron tunnelling spectra that serve as fingerprints of the vibrational properties of ads...

journal_title：Nature

authors： Sugimoto Y,Pou P,Abe M,Jelinek P,Pérez R,Morita S,Custance O

更新日期：2007-03-01 00:00:00

abstract：:With the discovery1 of superconductivity at 203 kelvin in H3S, attention returned to conventional superconductors with properties that can be described by the Bardeen-Cooper-Schrieffer and the Migdal-Eliashberg theories. Although these theories predict the possibility of room-temperature superconductivity in metals th...

journal_title：Nature

authors： Drozdov AP,Kong PP,Minkov VS,Besedin SP,Kuzovnikov MA,Mozaffari S,Balicas L,Balakirev FF,Graf DE,Prakapenka VB,Greenberg E,Knyazev DA,Tkacz M,Eremets MI

更新日期：2019-05-01 00:00:00

abstract：:Nanomachines of the future will require molecular-scale motors that can perform work and collectively induce controlled motion of much larger objects. We have designed a synthetic, light-driven molecular motor that is embedded in a liquid-crystal film and can rotate objects placed on the film that exceed the size of t...

journal_title：Nature

authors： Eelkema R,Pollard MM,Vicario J,Katsonis N,Ramon BS,Bastiaansen CW,Broer DJ,Feringa BL

更新日期：2006-03-09 00:00:00

abstract：:Several organisms have evolved the ability to measure daylength, or photoperiod, allowing them to adjust their development in anticipation of annual seasonal changes. Daylength measurement requires the integration of temporal information, provided by the circadian system, with light/dark discrimination, initiated by s...

journal_title：Nature

authors： Yanovsky MJ,Kay SA

更新日期：2002-09-19 00:00:00

abstract：:Lung diseases such as chronic obstructive pulmonary disease and pulmonary fibrosis involve the progressive and inexorable destruction of oxygen exchange surfaces and airways, and have emerged as a leading cause of death worldwide. Mitigating therapies, aside from impractical organ transplantation, remain limited and t...

journal_title：Nature

authors： Zuo W,Zhang T,Wu DZ,Guan SP,Liew AA,Yamamoto Y,Wang X,Lim SJ,Vincent M,Lessard M,Crum CP,Xian W,McKeon F

更新日期：2015-01-29 00:00:00

abstract：:Citrullination is the post-translational conversion of an arginine residue within a protein to the non-coded amino acid citrulline. This modification leads to the loss of a positive charge and reduction in hydrogen-bonding ability. It is carried out by a small family of tissue-specific vertebrate enzymes called peptid...

journal_title：Nature

authors： Christophorou MA,Castelo-Branco G,Halley-Stott RP,Oliveira CS,Loos R,Radzisheuskaya A,Mowen KA,Bertone P,Silva JC,Zernicka-Goetz M,Nielsen ML,Gurdon JB,Kouzarides T

更新日期：2014-03-06 00:00:00

abstract：:Several of the thousands of human long non-coding RNAs (lncRNAs) have been functionally characterized; however, potential roles for lncRNAs in somatic tissue differentiation remain poorly understood. Here we show that a 3.7-kilobase lncRNA, terminal differentiation-induced ncRNA (TINCR), controls human epidermal diffe...

journal_title：Nature

authors： Kretz M,Siprashvili Z,Chu C,Webster DE,Zehnder A,Qu K,Lee CS,Flockhart RJ,Groff AF,Chow J,Johnston D,Kim GE,Spitale RC,Flynn RA,Zheng GX,Aiyer S,Raj A,Rinn JL,Chang HY,Khavari PA

更新日期：2013-01-10 00:00:00

abstract：:Hydrogen peroxide (H2O2) is a major reactive oxygen species in unicellular and multicellular organisms, and is produced extracellularly in response to external stresses and internal cues1-4. H2O2 enters cells through aquaporin membrane proteins and covalently modifies cytoplasmic proteins to regulate signalling and ce...

journal_title：Nature

authors： Wu F,Chi Y,Jiang Z,Xu Y,Xie L,Huang F,Wan D,Ni J,Yuan F,Wu X,Zhang Y,Wang L,Ye R,Byeon B,Wang W,Zhang S,Sima M,Chen S,Zhu M,Pei J,Johnson DM,Zhu S,Cao X,Pei C,Zai Z,Liu Y,Liu T,Swift GB,Zhang W,Y

更新日期：2020-02-01 00:00:00

abstract：:The complexity of ecosystems can cause subtle and chaotic responses to changes in external forcing. Although ecosystems may not normally behave chaotically, sensitivity to external influences associated with nonlinearity can lead to amplification of climatic signals. Strong correlations between an El Niño index and ra...

journal_title：Nature

authors： Taylor AH,Allen JI,Clark PA

更新日期：2002-04-11 00:00:00

abstract：:Melting processes in the deep mantle have important implications for the origin of the deep-derived plumes believed to feed hotspot volcanoes such as those in Hawaii. They also provide insight into how the mantle has evolved, geochemically and dynamically, since the formation of Earth. Melt production in the shallow m...

journal_title：Nature

authors： Andrault D,Petitgirard S,Lo Nigro G,Devidal JL,Veronesi G,Garbarino G,Mezouar M

更新日期：2012-07-18 00:00:00

abstract：:The Hubbard model, formulated by physicist John Hubbard in the 1960s1, is a simple theoretical model of interacting quantum particles in a lattice. The model is thought to capture the essential physics of high-temperature superconductors, magnetic insulators and other complex quantum many-body ground states2,3. Althou...

journal_title：Nature

authors： Tang Y,Li L,Li T,Xu Y,Liu S,Barmak K,Watanabe K,Taniguchi T,MacDonald AH,Shan J,Mak KF

更新日期：2020-03-01 00:00:00

abstract：:With only a few exceptions that are well understood, conventional superconductivity does not coexist with long-range magnetic order (for example, ref. 1). Unconventional superconductivity, on the other hand, develops near a phase boundary separating magnetically ordered and magnetically disordered phases. A maximum in...

journal_title：Nature

authors： Park T,Ronning F,Yuan HQ,Salamon MB,Movshovich R,Sarrao JL,Thompson JD

更新日期：2006-03-02 00:00:00

abstract：:Diffuse gliomas are the most common malignant brain tumours in adults and include glioblastomas and World Health Organization (WHO) grade II and grade III tumours (sometimes referred to as lower-grade gliomas). Genetic tumour profiling is used to classify disease and guide therapy1,2, but involves brain surgery for ti...

journal_title：Nature

authors： Miller AM,Shah RH,Pentsova EI,Pourmaleki M,Briggs S,Distefano N,Zheng Y,Skakodub A,Mehta SA,Campos C,Hsieh WY,Selcuklu SD,Ling L,Meng F,Jing X,Samoila A,Bale TA,Tsui DWY,Grommes C,Viale A,Souweidane MM,Tabar V,

更新日期：2019-01-01 00:00:00

abstract：:Novel capsomeric complexes, pentamers and hexamers were detected as chemical entities in phage Q beta. Both were composed of identical protein subunits and stabilized by intermolecular disulphide bonds. Their numbers per particle were about 12 for pentamers and about 20 for hexamers--consistent with theoretical expect...

journal_title：Nature

authors： Takamatsu H,Iso K

更新日期：1982-08-26 00:00:00