Peptide growth factors are multifunctional.

abstract：:Nature's high-performance polymer, spider silk, consists of specific proteins, spidroins, with repetitive segments flanked by conserved non-repetitive domains. Spidroins are stored as a highly concentrated fluid dope. On silk formation, intermolecular interactions between repeat regions are established that provide st...

journal_title：Nature

authors： Askarieh G,Hedhammar M,Nordling K,Saenz A,Casals C,Rising A,Johansson J,Knight SD

更新日期：2010-05-13 00:00:00

abstract：:Curare has long been regarded as a typical competitive antagonist of acetylcholine (ACh) at the vertebrate neuromuscular junction. Recently, however, it has been shown that curare can also block the channels opened by ACh at the frog neuromuscular junction as well as on rat and Aplysia neurones; moreover, curare is ab...

journal_title：Nature

authors： Trautmann A

更新日期：1982-07-15 00:00:00

abstract：:Crystalline materials are crucial to the function of living organisms, in the shells of molluscs, the matrix of bone, the teeth of sea urchins, and the exoskeletons of coccoliths. However, pathological biomineralization can be an undesirable crystallization process associated with human diseases. The crystal growth of...

journal_title：Nature

authors： Chung J,Granja I,Taylor MG,Mpourmpakis G,Asplin JR,Rimer JD

更新日期：2016-08-25 00:00:00

abstract：:The use of viscid silk in aerial webs as a means to capture prey was a key innovation of araneoid spiders and has contributed largely to their ecological success. Here I describe a single silk thread from a spider's web that bears glue droplets and has been preserved in Lebanese amber from the Early Cretaceous period ...

journal_title：Nature

authors： Zschokke S

更新日期：2003-08-07 00:00:00

abstract：:Carbon chemistry exhibits a rich variety in bonding patterns, with homo- or heteronuclear multiple bonds involving sp-hybridized carbon atoms as found in molecules such as acetylenes, nitriles, allenes and carbon dioxide. Carbon's heavier homologues in group 14 of the periodic table--including silicon, germanium and t...

journal_title：Nature

authors： Ishida S,Iwamoto T,Kabuto C,Kira M

更新日期：2003-02-13 00:00:00

abstract：:Classically, there is a direct correlation between the lipophilic nature of a molecule and its rate of permeation across a biological membrane, so cell membranes should be more permeable to small, neutral molecules than they are to charged molecular species of similar size. Consequently, the distribution of NH+4 in bi...

journal_title：Nature

authors： Kikeri D,Sun A,Zeidel ML,Hebert SC

更新日期：1989-06-08 00:00:00

abstract：:Mineralocorticoid secretion is predominantly controlled by the octapeptide angiotensin II, which exerts trophic actions on the adrenal glomerulosa and acute regulatory effects on aldosterone biosynthesis. The trophic actions include stimulation of angiotensin II receptors and enzymes of the aldosterone biosynthetic pa...

journal_title：Nature

authors： Aguilera G,Schirar A,Baukal A,Catt KJ

更新日期：1981-02-05 00:00:00

abstract：:The protein coding sequences of most eukaryotic messenger RNA precursors (pre-mRNAs) are interrupted by non-coding sequences called introns. Pre-mRNA splicing is the process by which introns are removed and the protein coding elements assembled into mature mRNAs. Alternative pre-mRNA splicing selectively joins differe...

journal_title：Nature

authors： Maniatis T,Tasic B

更新日期：2002-07-11 00:00:00

abstract：:The Borrmann effect-a dramatic increase in transparency to X-ray beams-is observed when X-rays satisfying Bragg's law diffract through a perfect crystal. The minimization of absorption seen in the Borrmann effect has been explained by noting that the electric field of the X-ray beam approaches zero amplitude at the cr...

journal_title：Nature

authors： Pettifer RF,Collins SP,Laundy D

更新日期：2008-07-10 00:00:00

abstract：:Since Bridgman's discovery of five solid water (H2O) ice phases1 in 1912, studies on the extraordinary polymorphism of H2O have documented more than seventeen crystalline and several amorphous ice structures2,3, as well as rich metastability and kinetic effects4,5. This unique behaviour is due in part to the geometric...

journal_title：Nature

authors： Millot M,Coppari F,Rygg JR,Correa Barrios A,Hamel S,Swift DC,Eggert JH

更新日期：2019-05-01 00:00:00

abstract：:Antisense oligodeoxynucleotides (ODNs) have great promise as agents for the specific manipulation of gene expression. Until recently, nonspecific effects of ODNs often confounded the interpretation of antisense studies. Improvements in ODN chemistry and cellular delivery techniques now allow for more potent and specif...

journal_title：Nature

authors： Wagner RW

更新日期：1994-11-24 00:00:00

abstract：:Graphene, or single-layered graphite, with its high crystallinity and interesting semimetal electronic properties, has emerged as an exciting two-dimensional material showing great promise for the fabrication of nanoscale devices. Thin, elongated strips of graphene that possess straight edges, termed graphene ribbons,...

journal_title：Nature

authors： Kosynkin DV,Higginbotham AL,Sinitskii A,Lomeda JR,Dimiev A,Price BK,Tour JM

更新日期：2009-04-16 00:00:00

abstract：:Electrons in a single sheet of graphene behave quite differently from those in traditional two-dimensional electron systems. Like massless relativistic particles, they have linear dispersion and chiral eigenstates. Furthermore, two sets of electrons centred at different points in reciprocal space ('valleys') have this...

journal_title：Nature

authors： Song YJ,Otte AF,Kuk Y,Hu Y,Torrance DB,First PN,de Heer WA,Min H,Adam S,Stiles MD,MacDonald AH,Stroscio JA

更新日期：2010-09-09 00:00:00

abstract：:The hydrosulphide ion (HS(-)) and its undissociated form, hydrogen sulphide (H(2)S), which are believed to have been critical to the origin of life on Earth, remain important in physiology and cellular signalling. As a major metabolite in anaerobic bacterial growth, hydrogen sulphide is a product of both assimilatory ...

journal_title：Nature

authors： Czyzewski BK,Wang DN

更新日期：2012-03-11 00:00:00

abstract：:During early mammalian development, as the pluripotent cells that give rise to all of the tissues of the body proliferate and expand in number, they pass through transition states marked by a stepwise restriction in developmental potential and by changes in the expression of key regulatory genes. Recent findings show ...

journal_title：Nature

authors： Pera MF,Tam PP

更新日期：2010-06-10 00:00:00

abstract：:Astrophysical observations indicate that there is roughly five times more dark matter in the Universe than ordinary baryonic matter1, and an even larger amount of the Universe's energy content is attributed to dark energy2. However, the microscopic properties of these dark components remain unknown. Moreover, even ord...

journal_title：Nature

authors： Smorra C,Stadnik YV,Blessing PE,Bohman M,Borchert MJ,Devlin JA,Erlewein S,Harrington JA,Higuchi T,Mooser A,Schneider G,Wiesinger M,Wursten E,Blaum K,Matsuda Y,Ospelkaus C,Quint W,Walz J,Yamazaki Y,Budker D,Ulmer S

更新日期：2019-11-01 00:00:00

abstract：:Protons participate in most biologically important reactions, as substrates, products, cofactors and modulators, and proton transport is an essential step in energy transduction. The dynamics of protonation reactions have been studied extensively in solution and in model systems involving lipid-water interfaces, but h...

journal_title：Nature

authors： Prod'hom B,Pietrobon D,Hess P

更新日期：1987-09-17 00:00:00

abstract：:Genetic models predict that genomic rearrangement in hybrids can facilitate reproductive isolation and the formation of new species by preventing gene flow between the parent species and hybrid (sunflowers are an example). The mechanism underlying hybridization-induced chromosome remodelling is as yet unknown, althoug...

journal_title：Nature

authors： O'Neill RJ,O'Neill MJ,Graves JA

更新日期：1998-05-07 00:00:00

abstract：:TATA-binding protein (TBP) binds the minor groove of the TATA element with the DNA bent 80 degrees towards the major groove. A constrained minicircle strategy has been used to test the effect of DNA topology on the affinity of TBP for the TATA element. We report here that TBP bound to DNA which was slightly pre-bent t...

journal_title：Nature

authors： Parvin JD,McCormick RJ,Sharp PA,Fisher DE

更新日期：1995-02-23 00:00:00

abstract：:In contrast to microRNAs and Piwi-associated RNAs, short interfering RNAs (siRNAs) are seemingly dispensable for host-directed gene regulation in Drosophila. This notion is based on the fact that mutants lacking the core siRNA-generating enzyme Dicer-2 or the predominant siRNA effector Argonaute 2 are viable, fertile ...

journal_title：Nature

authors： Okamura K,Chung WJ,Ruby JG,Guo H,Bartel DP,Lai EC

更新日期：2008-06-05 00:00:00

abstract：:In Drosophila and mice, olfactory receptor neurons (ORNs) expressing the same receptors have convergent axonal projections to specific glomerular targets in the antennal lobe/olfactory bulb, creating an odour map in this first olfactory structure of the central nervous system. Projection neurons of the Drosophila ante...

journal_title：Nature

authors： Jefferis GS,Marin EC,Stocker RF,Luo L

更新日期：2001-11-08 00:00:00

abstract：:Group selection may be defined as selection caused by the differential extinction or proliferation of groups. The socially polymorphic spider Anelosimus studiosus exhibits a behavioural polymorphism in which females exhibit either a 'docile' or 'aggressive' behavioural phenotype. Natural colonies are composed of a mix...

journal_title：Nature

authors： Pruitt JN,Goodnight CJ

更新日期：2014-10-16 00:00:00

abstract：:The chemical composition of basaltic magma erupted at the Earth's surface is the end product of a complex series of processes, beginning with partial melting and melt extraction from a mantle source and ending with fractional crystallization and crustal assimilation at lower pressures. It has been proposed that studyi...

journal_title：Nature

authors： Spandler C,O'Neill HS,Kamenetsky VS

更新日期：2007-05-17 00:00:00

abstract：:The M13 coat protein spans the Escherichia coli plasma membrane with its amino-terminus facing the periplasm. It is made as a precursor--the procoat--with a typical leader peptide. Mutations which destroy the basic character of the carboxy-terminal domain of procoat, a domain which is oriented towards the cytoplasm, b...

journal_title：Nature

authors： Kuhn A,Wickner W,Kreil G

更新日期：1986-07-24 00:00:00

abstract：:A congressional investigation alleges that some researchers have failed to report all the drug-company money that they have received--and that universities may have been too slow to police them. ...

journal_title：Nature

authors：

更新日期：2008-10-16 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：:The c-Myc oncoprotein promotes proliferation and apoptosis, such that mutations that disable apoptotic programmes often cooperate with MYC during tumorigenesis. Here we report that two common mutant MYC alleles derived from human Burkitt's lymphoma uncouple proliferation from apoptosis and, as a result, are more effec...

journal_title：Nature

authors： Hemann MT,Bric A,Teruya-Feldstein J,Herbst A,Nilsson JA,Cordon-Cardo C,Cleveland JL,Tansey WP,Lowe SW

更新日期：2005-08-11 00:00:00

abstract：:During the past ten years, coupled quantum wells have emerged as a promising system for experiments on Bose condensation of excitons, with numerous theoretical and experimental studies aimed at the demonstration of this effect. One of the issues driving these studies is the possibility of long-range coherent transport...

journal_title：Nature

authors： Snoke D,Denev S,Liu Y,Pfeiffer L,West K

更新日期：2002-08-15 00:00:00

abstract：:How long does it take a random walker to reach a given target point? This quantity, known as a first-passage time (FPT), has led to a growing number of theoretical investigations over the past decade. The importance of FPTs originates from the crucial role played by first encounter properties in various real situation...

journal_title：Nature

authors： Condamin S,Bénichou O,Tejedor V,Voituriez R,Klafter J

更新日期：2007-11-01 00:00:00

abstract：:Four incorrect figure citations in this Letter have been corrected online. ...

journal_title：Nature

authors： Leo N,Carolus V,White JS,Kenzelmann M,Hudl M,Tolédano P,Honda T,Kimura T,Ivanov SA,Weil M,Lottermoser T,Meier D,Fiebig M

更新日期：2018-11-01 00:00:00