Facts and fancies about early fossil chordates and vertebrates.

abstract：:The crystal structure of a solid controls the interactions between the electronically active units and thus its electronic properties. In the high-temperature superconducting copper oxides, only one spatial arrangement of the electronically active Cu(2+) units-a two-dimensional square lattice-is available to study the...

journal_title：Nature

authors： Ganin AY,Takabayashi Y,Jeglic P,Arcon D,Potocnik A,Baker PJ,Ohishi Y,McDonald MT,Tzirakis MD,McLennan A,Darling GR,Takata M,Rosseinsky MJ,Prassides K

更新日期：2010-07-08 00:00:00

abstract：:Planetary aurorae are formed by energetic charged particles streaming along the planet's magnetic field lines into the upper atmosphere from the surrounding space environment. Earth's main auroral oval is formed through interactions with the solar wind, whereas that at Jupiter is formed through interactions with plasm...

journal_title：Nature

authors： Stallard T,Miller S,Melin H,Lystrup M,Cowley SW,Bunce EJ,Achilleos N,Dougherty M

更新日期：2008-06-19 00:00:00

abstract：:Nerve growth factor (NGF) is involved in a variety of processes involving signalling, such as cell differentiation and survival, growth cessation and apoptosis of neurons. These events are mediated by NGF as a result of binding to its two cell-surface receptors, TrkA and p75. TrkA is a receptor with tyrosine kinase ac...

journal_title：Nature

authors： Wiesmann C,Ultsch MH,Bass SH,de Vos AM

更新日期：1999-09-09 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：:Ageing is characterized by the development of persistent pro-inflammatory responses that contribute to atherosclerosis, metabolic syndrome, cancer and frailty1-3. The ageing brain is also vulnerable to inflammation, as demonstrated by the high prevalence of age-associated cognitive decline and Alzheimer's disease4-6. ...

journal_title：Nature

authors： Minhas PS,Latif-Hernandez A,McReynolds MR,Durairaj AS,Wang Q,Rubin A,Joshi AU,He JQ,Gauba E,Liu L,Wang C,Linde M,Sugiura Y,Moon PK,Majeti R,Suematsu M,Mochly-Rosen D,Weissman IL,Longo FM,Rabinowitz JD,Andreasson K

更新日期：2021-01-20 00:00:00

abstract：:Ground- and aircraft-based measurements show that the seasonal amplitude of Northern Hemisphere atmospheric carbon dioxide (CO2) concentrations has increased by as much as 50 per cent over the past 50 years. This increase has been linked to changes in temperate, boreal and arctic ecosystem properties and processes suc...

journal_title：Nature

authors： Gray JM,Frolking S,Kort EA,Ray DK,Kucharik CJ,Ramankutty N,Friedl MA

更新日期：2014-11-20 00:00:00

abstract：:Tumour necrosis factor (TNF) elicits multiple biological effects through two distinct cell surface receptors, TNF-R1 (p55) and TNF-R2 (p75). Most TNF-mediated biological responses, such as cell death, gene induction, antiviral activity and cytokine production, have been attributed to TNF-R1 (refs 1-5). Gene targeting ...

journal_title：Nature

authors： Erickson SL,de Sauvage FJ,Kikly K,Carver-Moore K,Pitts-Meek S,Gillett N,Sheehan KC,Schreiber RD,Goeddel DV,Moore MW

更新日期：1994-12-08 00:00:00

abstract：:Strigolactones (SLs) are a group of newly identified plant hormones that control plant shoot branching. SL signalling requires the hormone-dependent interaction of DWARF 14 (D14), a probable candidate SL receptor, with DWARF 3 (D3), an F-box component of the Skp-Cullin-F-box (SCF) E3 ubiquitin ligase complex. Here we ...

journal_title：Nature

authors： Jiang L,Liu X,Xiong G,Liu H,Chen F,Wang L,Meng X,Liu G,Yu H,Yuan Y,Yi W,Zhao L,Ma H,He Y,Wu Z,Melcher K,Qian Q,Xu HE,Wang Y,Li J

更新日期：2013-12-19 00:00:00

abstract：:Plants can have positive effects on each other. For example, the accumulation of nutrients, provision of shade, amelioration of disturbance, or protection from herbivores by some species can enhance the performance of neighbouring species. Thus the notion that the distributions and abundances of plant species are inde...

journal_title：Nature

authors： Callaway RM,Brooker RW,Choler P,Kikvidze Z,Lortie CJ,Michalet R,Paolini L,Pugnaire FI,Newingham B,Aschehoug ET,Armas C,Kikodze D,Cook BJ

更新日期：2002-06-20 00:00:00

abstract：:Manic depression is a severe cyclic mental illness that can be unipolar or bipolar and has a lifetime risk of approximately 7 per 1,000 in most populations. Families with multiple cases of manic depression have been described that are compatible with both autosomal dominant and X-linked modes of genetic transmission. ...

journal_title：Nature

authors： Hodgkinson S,Sherrington R,Gurling H,Marchbanks R,Reeders S,Mallet J,McInnis M,Petursson H,Brynjolfsson J

更新日期：1987-02-26 00:00:00

abstract：:Change history: In this Letter, the final two pages of the Supplementary Information, which included two tables listing primer and antibodies, respectively, were missing; see accompanying Amendment for the missing Supplementary Tables. This Letter has not been corrected online. ...

journal_title：Nature

authors： Wculek SK,Malanchi I

更新日期：2019-07-01 00:00:00

abstract：:In this Letter, errors in Supplementary Table 1 have been corrected. ...

journal_title：Nature

authors： Song XP,Hansen MC,Stehman SV,Potapov PV,Tyukavina A,Vermote EF,Townshend JR

更新日期：2018-11-01 00:00:00

abstract：:Many physiological events require transient increases in cytosolic Ca(2+) concentrations. Ryanodine receptors (RyRs) are ion channels that govern the release of Ca(2+) from the endoplasmic and sarcoplasmic reticulum. Mutations in RyRs can lead to severe genetic conditions that affect both cardiac and skeletal muscle, ...

journal_title：Nature

authors： Tung CC,Lobo PA,Kimlicka L,Van Petegem F

更新日期：2010-11-25 00:00:00

abstract：:RNase P is the only endonuclease responsible for processing the 5' end of transfer RNA by cleaving a precursor and leading to tRNA maturation. It contains an RNA component and a protein component and has been identified in all organisms. It was one of the first catalytic RNAs identified and the first that acts as a mu...

journal_title：Nature

authors： Krasilnikov AS,Yang X,Pan T,Mondragón A

更新日期：2003-02-13 00:00:00

abstract：:Since 1814, when rubella was first described, the origins of the disease and its causative agent, rubella virus (Matonaviridae: Rubivirus), have remained unclear1. Here we describe ruhugu virus and rustrela virus in Africa and Europe, respectively, which are, to our knowledge, the first known relatives of rubella viru...

journal_title：Nature

authors： Bennett AJ,Paskey AC,Ebinger A,Pfaff F,Priemer G,Höper D,Breithaupt A,Heuser E,Ulrich RG,Kuhn JH,Bishop-Lilly KA,Beer M,Goldberg TL

更新日期：2020-10-01 00:00:00

abstract：:Cpdm (chronic proliferative dermatitis) mice develop chronic dermatitis and an immunodeficiency with increased serum IgM, symptoms that resemble those of patients with X-linked hyper-IgM syndrome and hypohydrotic ectodermal dysplasia (XHM-ED), which is caused by mutations in NEMO (NF-κB essential modulator; also known...

journal_title：Nature

authors： Tokunaga F,Nakagawa T,Nakahara M,Saeki Y,Taniguchi M,Sakata S,Tanaka K,Nakano H,Iwai K

更新日期：2011-03-31 00:00:00

abstract：:Oxygenic photosynthesis in plants, algae and cyanobacteria is initiated at photosystem II, a homodimeric multisubunit protein-cofactor complex embedded in the thylakoid membrane. Photosystem II captures sunlight and powers the unique photo-induced oxidation of water to atmospheric oxygen. Crystallographic investigatio...

journal_title：Nature

authors： Loll B,Kern J,Saenger W,Zouni A,Biesiadka J

更新日期：2005-12-15 00:00:00

abstract：:The X-ray structure of a pentameric ligand-gated ion channel from Erwinia chrysanthemi (ELIC) has recently provided structural insight into this family of ion channels at high resolution. The structure shows a homo-pentameric protein with a barrel-stave architecture that defines an ion-conduction pore located on the f...

journal_title：Nature

authors： Hilf RJ,Dutzler R

更新日期：2009-01-01 00:00:00

abstract：:Guard cells are located in the epidermis of plant leaves, and in pairs surround stomatal pores. These control both the influx of CO2 as a raw material for photosynthesis and water loss from plants through transpiration to the atmosphere. Guard cells have become a highly developed system for dissecting early signal tra...

journal_title：Nature

authors： Schroeder JI,Kwak JM,Allen GJ

更新日期：2001-03-15 00:00:00

abstract：:The neural crest, a source of many different cell types in vertebrate embryos, has not been identified in other chordates. Current opinion therefore holds that neural crest cells were a vertebrate innovation. Here we describe a migratory cell population resembling neural crest cells in the ascidian urochordate Ecteina...

journal_title：Nature

authors： Jeffery WR,Strickler AG,Yamamoto Y

更新日期：2004-10-07 00:00:00

abstract：:It has been established that many eukaryotic mRNAs contain poly(adenylic acid) tracts at their 3'-termini. The polyadenylation of mRNA occurs post-transcriptionally in the nucleus as a rapid, initial addition of 100-200 adenylate residues to the pre-mRNA (ref. 1). Subsequently, a slower chain extension (6-8 bases) of ...

journal_title：Nature

authors： Rose KM,Bell LE,Jacob ST

更新日期：1977-05-12 00:00:00

abstract：:At birth the trans-placental nutrient supply is suddenly interrupted, and neonates face severe starvation until supply can be restored through milk nutrients. Here, we show that neonates adapt to this adverse circumstance by inducing autophagy. Autophagy is the primary means for the degradation of cytoplasmic constitu...

journal_title：Nature

authors： Kuma A,Hatano M,Matsui M,Yamamoto A,Nakaya H,Yoshimori T,Ohsumi Y,Tokuhisa T,Mizushima N

更新日期：2004-12-23 00:00:00

abstract：:The dwarfing of large mammals on islands occurred repeatedly in the Pleistocene. Elephants, deer, hippopotami and other species became dwarfed on islands in Indonesia, the Mediterranean, the east Pacific and elsewhere. In most cases, the full-sized ancestral form can be recognized among the adjacent mainland fauna, bu...

journal_title：Nature

authors： Lister AM

更新日期：1989-11-30 00:00:00

abstract：:Hydrothermal vents are ephemeral because of frequent volcanic and tectonic activities associated with crust formation. Although the larvae of hydrothermal vent fauna can rapidly colonize new vent sites separated by tens to hundreds of kilometres, the mechanisms by which these larvae disperse and recruit are not unders...

journal_title：Nature

authors： Marsh AG,Mullineaux LS,Young CM,Manahan DT

更新日期：2001-05-03 00:00:00

abstract：:In Drosophila, the establishment of regional commitments along most of the anterior/posterior axis of the developing embryo depends on two clusters of homeotic genes: the Antennapedia complex (ANT-C) and the bithorax complex (BX-C). The red flour beetle has a single complex (HOM-C) representing the homologues of the...

journal_title：Nature

authors： Stuart JJ,Brown SJ,Beeman RW,Denell RE

更新日期：1991-03-07 00:00:00

abstract：:Lymphocyte function-associated antigen-1 (LFA-1) is a heterodimer composed of an alpha and beta chain that is expressed on the surface of most leukocytes and is an essential molecule for adhesion reactions between cells participating in the immune response. A putative ligand for LFA-1 is the intercellular adhesion mol...

journal_title：Nature

authors： van Noesel C,Miedema F,Brouwer M,de Rie MA,Aarden LA,van Lier RA

更新日期：1988-06-30 00:00:00

abstract：:Calcium-triggered fusion of synaptic vesicles and neurotransmitter release are fundamental signalling steps in the central nervous system. It is generally assumed that fast transmitter release is triggered by elevations in intracellular calcium concentration ([Ca2+]i) to at least 100 microM near the sites of vesicle f...

journal_title：Nature

authors： Schneggenburger R,Neher E

更新日期：2000-08-24 00:00:00

abstract：:The behaviour of electrons in solids is well described by Landau's Fermi-liquid theory, which predicts that although electrons in a metal interact, they can still be treated as well defined fermions, which are called 'quasiparticles'. At low temperatures, the ability of quasiparticles to transport heat is given strict...

journal_title：Nature

authors： Hill RW,Proust C,Taillefer L,Fournier P,Greene RL

更新日期：2001-12-13 00:00:00

abstract：:Tectal polarity for retinal connections remains reversible long after the anatomical pattern of neural structures has been determined. Cells in the diencephalon seem to control this polarity. Following certain embryonic operations, the diencephalon developed behind the tectum. In such cases, the polarity of the retino...

journal_title：Nature

authors： Chung SH,Cooke J

更新日期：1975-11-13 00:00:00

abstract：:Multiple sclerosis is thought to be an autoimmune disease of the central nervous system mediated by T cells specific for a myelin antigen. Myelin basic protein has been studied as a potential autoantigen in the disease because of its role as an encephalitogen in experimental autoimmune encephalomyelitis and post-viral...

journal_title：Nature

authors： Ota K,Matsui M,Milford EL,Mackin GA,Weiner HL,Hafler DA

更新日期：1990-07-12 00:00:00