Crystal structure of the motor domain of the kinesin-related motor ncd.

abstract：:Retrotransposons, which proliferate by reverse transcription of RNA intermediates, comprise a major portion of plant genomes. Plants often change the genome size and organization during evolution by rapid proliferation and deletion of long terminal repeat (LTR) retrotransposons. Precise transposon sequences throughout...

journal_title：Nature

authors： Tsukahara S,Kobayashi A,Kawabe A,Mathieu O,Miura A,Kakutani T

更新日期：2009-09-17 00:00:00

abstract：:Close inbreeding is known for a variety of small mammal species for which a high probability of mortality during dispersal makes helping and delayed maturation a relatively secure fitness option. Prolonged inbreeding, however, is usually associated with lowered fitness, and it has been shown that most highly inbred sm...

journal_title：Nature

authors： O'Riain MJ,Jarvis JU,Faulkes CG

更新日期：1996-04-18 00:00:00

abstract：:Regulated fusion of secretory granules with the plasma membrane in secretory cells requires ATP, Ca2+ and cytosolic as well as membrane proteins. ATP-dependent steps in Ca(2+)-activated secretion from PC12 cells require three cytosolic PEP proteins (priming in exocytosis proteins, PEP1-3), the identity of which will p...

journal_title：Nature

authors： Hay JC,Fisette PL,Jenkins GH,Fukami K,Takenawa T,Anderson RA,Martin TF

更新日期：1995-03-09 00:00:00

abstract：:T lymphocytes are predisposed to recognition of foreign protein fragments bound to cell-surface molecules encoded by the major histocompatibility complex (MHC). There is now compelling evidence that this specificity is a consequence of a selection process operating on developing T lymphocytes in the thymus. As a resul...

journal_title：Nature

authors： Kaye J,Hsu ML,Sauron ME,Jameson SC,Gascoigne NR,Hedrick SM

更新日期：1989-10-26 00:00:00

abstract：:Much of our knowledge of galaxies comes from analysing the radiation emitted by their stars, which depends on the present number of each type of star in the galaxy. The present number depends on the stellar initial mass function (IMF), which describes the distribution of stellar masses when the population formed, and ...

journal_title：Nature

authors： Cappellari M,McDermid RM,Alatalo K,Blitz L,Bois M,Bournaud F,Bureau M,Crocker AF,Davies RL,Davis TA,de Zeeuw PT,Duc PA,Emsellem E,Khochfar S,Krajnović D,Kuntschner H,Lablanche PY,Morganti R,Naab T,Oosterloo T,Sarz

更新日期：2012-04-25 00:00:00

abstract：:Uptake of glutamate into glial cells in the CNS maintains the extracellular glutamate concentration below neurotoxic levels and helps terminate its action as a neurotransmitter. The co-transport of two sodium ions on the glutamate carrier is thought to provide the energy needed to transport glutamate into cells. We ha...

journal_title：Nature

authors： Barbour B,Brew H,Attwell D

更新日期：1988-09-29 00:00:00

abstract：:The majority of human emerging infectious diseases are zoonotic, with viruses that originate in wild mammals of particular concern (for example, HIV, Ebola and SARS). Understanding patterns of viral diversity in wildlife and determinants of successful cross-species transmission, or spillover, are therefore key goals f...

journal_title：Nature

authors： Olival KJ,Hosseini PR,Zambrana-Torrelio C,Ross N,Bogich TL,Daszak P

更新日期：2017-06-29 00:00:00

abstract：:Applications are emerging that require the creation of fine-scale structures in three dimensions--examples include scaffolds for tissue engineering, micro-fluidic devices and photonic materials that control light propagation over a range of frequencies. But writing methods such as dip-pen nanolithography and ink-jet p...

journal_title：Nature

authors： Gratson GM,Xu M,Lewis JA

更新日期：2004-03-25 00:00:00

abstract：:The B cells of the immune system, which secrete antibodies against foreign antigens, are fully specific and effective only after maturation in lymph nodes and other lymphoid tissues. Immunocompetent T cells play a crucial part in this process, but the molecular details of the way in which the two cell types interact h...

journal_title：Nature

authors： Clark EA,Ledbetter JA

更新日期：1994-02-03 00:00:00

abstract：:A serine/threonine kinase, named protein kinase B (PKB) for its sequence homology to both protein kinase A and C, has previously been isolated. PKB, which is identical to the kinase Rac, was later found to be the cellular homologue of the transforming v-Akt. Here we show that PKB is activated by stimuli such as insuli...

journal_title：Nature

authors： Burgering BM,Coffer PJ

更新日期：1995-08-17 00:00:00

abstract：:Genotypic variation among independent isolates of human immunodeficiency virus type-1 (HIV-1) is well known, but its molecular basis and biological consequences are poorly understood. We examined the genesis of molecular variation in HIV-1 by sequential virus isolations from two chronically infected individuals and an...

journal_title：Nature

authors： Saag MS,Hahn BH,Gibbons J,Li Y,Parks ES,Parks WP,Shaw GM

更新日期：1988-08-04 00:00:00

abstract：:An ageing world population has fuelled interest in regenerative remedies that may stem declining organ function and maintain fitness. Unanswered is whether elimination of intrinsic instigators driving age-associated degeneration can reverse, as opposed to simply arrest, various afflictions of the aged. Such instigator...

journal_title：Nature

authors： Jaskelioff M,Muller FL,Paik JH,Thomas E,Jiang S,Adams AC,Sahin E,Kost-Alimova M,Protopopov A,Cadiñanos J,Horner JW,Maratos-Flier E,Depinho RA

更新日期：2011-01-06 00:00:00

abstract：:Apoptosis (programmed cell death), an essential process in the development and homeostasis of metazoans, is carried out by caspases. The mitochondrial protein Smac/DIABLO performs a critical function in apoptosis by eliminating the inhibitory effect of IAPs (inhibitor of apoptosis proteins) on caspases. Here we show t...

journal_title：Nature

authors： Chai J,Du C,Wu JW,Kyin S,Wang X,Shi Y

更新日期：2000-08-24 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：:Lecithin is a major structural component of biological membranes. Because of their amphipathic nature, lecithin and related phospholipids tend to aggregate as bilayer structures in which the hydrophilic head groups are orientated towards the surface and the hydrophobic hydrocarbon chains towards the interior. A detail...

journal_title：Nature

authors： Pearson RH,Pascher I

更新日期：1979-10-11 00:00:00

abstract：:Carbon exchange between the terrestrial biosphere and the atmosphere is one of the key processes that need to be assessed in the context of the Kyoto Protocol. Several studies suggest that the terrestrial biosphere is gaining carbon, but these estimates are obtained primarily by indirect methods, and the factors that ...

journal_title：Nature

authors： Valentini R,Matteucci G,Dolman AJ,Schulze ED,Rebmann C,Moors EJ,Granier A,Gross P,Jensen NO,Pilegaard K,Lindroth A,Grelle A,Bernhofer C,Grünwald T,Aubinet M,Ceulemans R,Kowalski AS,Vesala T,Rannik U,Berbigier P,Lo

更新日期：2000-04-20 00:00:00

abstract：:Type Ia supernovae are thought to result from thermonuclear explosions of carbon-oxygen white dwarf stars. Existing models generally explain the observed properties, with the exception of the sub-luminous 1991bg-like supernovae. It has long been suspected that the merger of two white dwarfs could give rise to a type I...

journal_title：Nature

authors： Pakmor R,Kromer M,Röpke FK,Sim SA,Ruiter AJ,Hillebrandt W

更新日期：2010-01-07 00:00:00

abstract：:Warming surface temperatures have driven a substantial reduction in the extent and duration of Northern Hemisphere snow cover1-3. These changes in snow cover affect Earth's climate system via the surface energy budget, and influence freshwater resources across a large proportion of the Northern Hemisphere4-6. In contr...

journal_title：Nature

authors： Pulliainen J,Luojus K,Derksen C,Mudryk L,Lemmetyinen J,Salminen M,Ikonen J,Takala M,Cohen J,Smolander T,Norberg J

更新日期：2020-05-01 00:00:00

abstract：:Studies of the actin-based motility of the intracellular pathogens Listeria monocytogenes and Shigella flexneri have provided important insight into the events occurring at the leading edges of motile cells. Like the bacteria Listeria and Shigella, vaccinia virus, a relative of the causative agent of smallpox, uses ac...

journal_title：Nature

authors： Frischknecht F,Moreau V,Röttger S,Gonfloni S,Reckmann I,Superti-Furga G,Way M

更新日期：1999-10-28 00:00:00

abstract：:Interfaces in heterostructures have been a key point of interest in condensed-matter physics for decades owing to a plethora of distinctive phenomena-such as rectification1, the photovoltaic effect2, the quantum Hall effect3 and high-temperature superconductivity4-and their critical roles in present-day technical devi...

journal_title：Nature

authors： Yang MM,Luo ZD,Mi Z,Zhao J,E SP,Alexe M

更新日期：2020-08-01 00:00:00

abstract：:Mechanical stimuli can modify the energy landscape of chemical reactions and enable reaction pathways, offering a synthetic strategy that complements conventional chemistry. These mechanochemical mechanisms have been studied extensively in one-dimensional polymers under tensile stress using ring-opening and reorganiza...

journal_title：Nature

authors： Yan H,Yang F,Pan D,Lin Y,Hohman JN,Solis-Ibarra D,Li FH,Dahl JEP,Carlson RMK,Tkachenko BA,Fokin AA,Schreiner PR,Galli G,Mao WL,Shen ZX,Melosh NA

更新日期：2018-02-21 00:00:00

abstract：:Growth factors raise intracellular pH (pHi) by stimulating Na+/H+ exchange in the absence of HCO3-. In mutant cells that lack the Na+/H+ exchange activity, this alkalinization does not occur, and the cells do not proliferate without artificial elevation of pHi. It has therefore been widely suggested that an early pHi ...

journal_title：Nature

authors： Ganz MB,Boyarsky G,Sterzel RB,Boron WF

更新日期：1989-02-16 00:00:00

abstract：:From drug delivery to chemical and biological catalysis and cosmetics, the need for efficient fabrication pathways for particles over a wide range of sizes, from a variety of materials, and in many different structures has been well established. Here we harness the inherent scalability of fibre production and an in-fi...

journal_title：Nature

authors： Kaufman JJ,Tao G,Shabahang S,Banaei EH,Deng DS,Liang X,Johnson SG,Fink Y,Abouraddy AF

更新日期：2012-07-26 00:00:00

abstract：:The class II region of the human major histocompatibility complex (MHC) encodes a polymorphic set of cell surface glycoproteins involved in the regulation of the immune response. Each glycoprotein is a heterodimer composed of a alpha-chain of relative molecular mass (Mr) 34,000 (34 K) and a beta-chain of Mr = 28K. The...

journal_title：Nature

authors： Hardy DA,Bell JI,Long EO,Lindsten T,McDevitt HO

更新日期：1986-10-02 00:00:00

abstract：:Metastasis is a major cause of death in cancer patients and involves a multistep process including detachment of cancer cells from a primary cancer, invasion of surrounding tissue, spread through circulation, re-invasion and proliferation in distant organs. KiSS-1 is a human metastasis suppressor gene, that suppresses...

journal_title：Nature

authors： Ohtaki T,Shintani Y,Honda S,Matsumoto H,Hori A,Kanehashi K,Terao Y,Kumano S,Takatsu Y,Masuda Y,Ishibashi Y,Watanabe T,Asada M,Yamada T,Suenaga M,Kitada C,Usuki S,Kurokawa T,Onda H,Nishimura O,Fujino M

更新日期：2001-05-31 00:00:00

abstract：: ...

journal_title：Nature

authors：

更新日期：2018-11-01 00:00:00

abstract：: ...

journal_title：Nature

authors： Rivest S

更新日期：2018-11-01 00:00:00

abstract：:The monarch butterfly, Danaus plexippus, is famous for its spectacular annual migration across North America, recent worldwide dispersal, and orange warning colouration. Despite decades of study and broad public interest, we know little about the genetic basis of these hallmark traits. Here we uncover the history of t...

journal_title：Nature

authors： Zhan S,Zhang W,Niitepõld K,Hsu J,Haeger JF,Zalucki MP,Altizer S,de Roode JC,Reppert SM,Kronforst MR

更新日期：2014-10-16 00:00:00

abstract：:TMV RNA is not an efficient template for translation of the viral coat protein, in spite of containing nucleotide sequences coding for the protein. Efficient translation requires the prior synthesis within infected cells of a smaller RNA carrying only a portion of the information encoded in the whole genome. ...

journal_title：Nature

authors： Hunter TR,Hunt T,Knowland J,Zimmern D

更新日期：1976-04-29 00:00:00

abstract：:Evolution of the earliest mammals shows successive episodes of diversification. Lineage-splitting in Mesozoic mammals is coupled with many independent evolutionary experiments and ecological specializations. Classic scenarios of mammalian morphological evolution tend to posit an orderly acquisition of key evolutionary...

journal_title：Nature

authors： Luo ZX

更新日期：2007-12-13 00:00:00