RecA acts in trans to allow replication of damaged DNA by DNA polymerase V.

abstract：:The observations that atherosclerosis often occurs in non-smokers without elevated levels of low-density lipoprotein cholesterol, and that most atherosclerosis loci so far identified in mice do not affect systemic risk factors associated with atherosclerosis, suggest that as-yet-unidentified mechanisms must contribute...

journal_title：Nature

authors： Bernal-Mizrachi C,Gates AC,Weng S,Imamura T,Knutsen RH,DeSantis P,Coleman T,Townsend RR,Muglia LJ,Semenkovich CF

更新日期：2005-05-26 00:00:00

abstract：:Xenoturbellida and Acoelomorpha are marine worms with contentious ancestry. Both were originally associated with the flatworms (Platyhelminthes), but molecular data have revised their phylogenetic positions, generally linking Xenoturbellida to the deuterostomes and positioning the Acoelomorpha as the most basally bran...

journal_title：Nature

authors： Philippe H,Brinkmann H,Copley RR,Moroz LL,Nakano H,Poustka AJ,Wallberg A,Peterson KJ,Telford MJ

更新日期：2011-02-10 00:00:00

abstract：:The recent discovery of a pterosaur egg with embryonic skeleton and soft tissues from the Yixian Formation confirmed that the flying pterosaurs were oviparous. Here we describe another pterosaur egg whose exquisite preservation indicates that the shell structure was soft and leathery. ...

journal_title：Nature

authors： Ji Q,Ji SA,Cheng YN,You HL,Lü JC,Liu YQ,Yuan CX

更新日期：2004-12-02 00:00:00

abstract：:We are facing a global metabolic health crisis provoked by an obesity epidemic. Here we report the human gut microbial composition in a population sample of 123 non-obese and 169 obese Danish individuals. We find two groups of individuals that differ by the number of gut microbial genes and thus gut bacterial richness...

journal_title：Nature

authors： Le Chatelier E,Nielsen T,Qin J,Prifti E,Hildebrand F,Falony G,Almeida M,Arumugam M,Batto JM,Kennedy S,Leonard P,Li J,Burgdorf K,Grarup N,Jørgensen T,Brandslund I,Nielsen HB,Juncker AS,Bertalan M,Levenez F,Pons N,

更新日期：2013-08-29 00:00:00

abstract：:Vitamin A is required for normal growth and development, and retinoic acid (RA) may be the active metabolite in this process. Recent evidence indicates that RA acts through binding to a nuclear receptor which belongs to the steroid/thyroid hormone receptor superfamily. The receptors seem to associate with hormone-resp...

journal_title：Nature

authors： Bedo G,Santisteban P,Aranda A

更新日期：1989-05-18 00:00:00

abstract：:Cytosine DNA methylation is important in regulating gene expression and in silencing transposons and other repetitive sequences. Recent genomic studies in Arabidopsis thaliana have revealed that many endogenous genes are methylated either within their promoters or within their transcribed regions, and that gene methyl...

journal_title：Nature

authors： Cokus SJ,Feng S,Zhang X,Chen Z,Merriman B,Haudenschild CD,Pradhan S,Nelson SF,Pellegrini M,Jacobsen SE

更新日期：2008-03-13 00:00:00

abstract：:Transforming growth factor-beta (TGF-beta) signals by contacting two distantly related transmembrane serine/threonine kinases called receptors I and II. The role of these molecules in signalling has now been determined. TGF-beta binds directly to receptor II, which is a constitutively active kinase. Bound TGF-beta is ...

journal_title：Nature

authors： Wrana JL,Attisano L,Wieser R,Ventura F,Massagué J

更新日期：1994-08-04 00:00:00

abstract：:Many collective human activities, including violence, have been shown to exhibit universal patterns. The size distributions of casualties both in whole wars from 1816 to 1980 and terrorist attacks have separately been shown to follow approximate power-law distributions. However, the possibility of universal patterns r...

journal_title：Nature

authors： Bohorquez JC,Gourley S,Dixon AR,Spagat M,Johnson NF

更新日期：2009-12-17 00:00:00

abstract：:Complexity in male sexual displays is widely appreciated but diversity in female mate choice has received little attention. Males of many species have sexual displays composed of multiple display traits, and females are thought to use these different traits in mate choice. Models of multiple display trait evolution su...

journal_title：Nature

authors： Coleman SW,Patricelli GL,Borgia G

更新日期：2004-04-15 00:00:00

abstract：:The discovery of the peptide hormone ghrelin, an endogenous ligand for the growth hormone secretagogue (GHS) receptor, yielded the surprising result that the principal site of ghrelin synthesis is the stomach and not the hypothalamus. Although ghrelin is likely to regulate pituitary growth hormone (GH) secretion along...

journal_title：Nature

authors： Tschöp M,Smiley DL,Heiman ML

更新日期：2000-10-19 00:00:00

abstract：:Nicotine obtained from tobacco can improve learning and memory on various tasks and has been linked to arousal, attention, rapid information processing, working memory, and long-term memories that can cause craving years after someone has stopped smoking. One likely target for these effects is the hippocampus, a centr...

journal_title：Nature

authors： Gray R,Rajan AS,Radcliffe KA,Yakehiro M,Dani JA

更新日期：1996-10-24 00:00:00

abstract：:The CD4 glycoprotein is expressed on T-helper and cytotoxic lymphocytes which are restricted to class II major histocompatibility complex (MHC) antigens on target cells. Antibody inhibition studies imply that CD4 acts to increase the avidity of effector-target cell interactions. These observations have led to the spec...

journal_title：Nature

authors： Doyle C,Strominger JL

更新日期：1987-11-19 00:00:00

abstract：:Bacillus cereus is an opportunistic pathogen causing food poisoning manifested by diarrhoeal or emetic syndromes. It is closely related to the animal and human pathogen Bacillus anthracis and the insect pathogen Bacillus thuringiensis, the former being used as a biological weapon and the latter as a pesticide. B. anth...

journal_title：Nature

authors： Ivanova N,Sorokin A,Anderson I,Galleron N,Candelon B,Kapatral V,Bhattacharyya A,Reznik G,Mikhailova N,Lapidus A,Chu L,Mazur M,Goltsman E,Larsen N,D'Souza M,Walunas T,Grechkin Y,Pusch G,Haselkorn R,Fonstein M,Ehrli

更新日期：2003-05-01 00:00:00

abstract：:Coordinated cell migration is essential in many fundamental biological processes including embryonic development, organogenesis, wound healing and the immune response. During organogenesis, groups of cells are directed to specific locations within the embryo. Here we show that the zebrafish miles apart (mil) mutation ...

journal_title：Nature

authors： Kupperman E,An S,Osborne N,Waldron S,Stainier DY

更新日期：2000-07-13 00:00:00

abstract：:Therapeutic vaccines derived from carbohydrate antigen-adjuvant combinations are a promising approach for cancer immunotherapy. One of the critical limitations in this area is access to sufficient quantities of tumour-associated carbohydrate antigens and glycoconjugate adjuvants. At present, availability of the comple...

journal_title：Nature

authors： Galonić DP,Gin DY

更新日期：2007-04-26 00:00:00

abstract：:XX female mammals undergo transcriptional silencing of most genes on one of their two X chromosomes to equalize X-linked gene dosage with XY males in a process referred to as X-chromosome inactivation (XCI). XCI is an example of epigenetic regulation. Once enacted in individual cells of the early female embryo, XCI is...

journal_title：Nature

authors： Kalantry S,Purushothaman S,Bowen RB,Starmer J,Magnuson T

更新日期：2009-07-30 00:00:00

abstract：:Adenylyl cyclase is the prototypical second messenger generator. Nearly all of the eight cloned adenylyl cyclases are regulated by one or other arm of the phospholipase C pathway. Functional and ultrastructural investigations have shown that adenylyl cyclases are intimately associated with sites of calcium ion entry i...

journal_title：Nature

authors： Cooper DM,Mons N,Karpen JW

更新日期：1995-03-30 00:00:00

abstract：:More than 99 per cent of the roughly 58,000 living vertebrate species have jaws. This major clade, whose members are collectively known as gnathostomes ('jawed mouths'), made its earliest definitive appearance in the Silurian period, 444-416 million years (Myr) ago, with both the origin of the modern (crown-group) rad...

journal_title：Nature

authors： Anderson PS,Friedman M,Brazeau MD,Rayfield EJ

更新日期：2011-07-06 00:00:00

abstract：:Yeasts, which have been a component of the human diet for at least 7,000 years, possess an elaborate cell wall α-mannan. The influence of yeast mannan on the ecology of the human microbiota is unknown. Here we show that yeast α-mannan is a viable food source for the Gram-negative bacterium Bacteroides thetaiotaomicron...

journal_title：Nature

authors： Cuskin F,Lowe EC,Temple MJ,Zhu Y,Cameron E,Pudlo NA,Porter NT,Urs K,Thompson AJ,Cartmell A,Rogowski A,Hamilton BS,Chen R,Tolbert TJ,Piens K,Bracke D,Vervecken W,Hakki Z,Speciale G,Munōz-Munōz JL,Day A,Peña MJ,

更新日期：2015-01-08 00:00:00

abstract：:In budding yeast many genes are expressed under cell-cycle control in late G1. These include a large group of DNA synthesis genes, the HO gene involved in mating-type switching, CTS1 (chitinase) and also CLN1 and CLN2 (ref. 4) encoding G1 cyclins. Two factors, encoded by the SWI4 and SWI6 genes, are required for HO (r...

journal_title：Nature

authors： Lowndes NF,Johnson AL,Breeden L,Johnston LH

更新日期：1992-06-11 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：:An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...

journal_title：Nature

authors： Grishin E,Malamud U,Perets HB,Wandel O,Schäfer CM

更新日期：2020-06-01 00:00:00

abstract：:Design-specific control over excited-state dynamics is necessary for any application seeking to convert light into chemical potential. Such control is especially desirable in iron(II)-based chromophores, which are an Earth-abundant option for a wide range of photo-induced electron-transfer applications including solar...

journal_title：Nature

authors： Paulus BC,Adelman SL,Jamula LL,McCusker JK

更新日期：2020-06-01 00:00:00

abstract：:Protecting the world's freshwater resources requires diagnosing threats over a broad range of scales, from global to local. Here we present the first worldwide synthesis to jointly consider human and biodiversity perspectives on water security using a spatial framework that quantifies multiple stressors and accounts f...

journal_title：Nature

authors： Vörösmarty CJ,McIntyre PB,Gessner MO,Dudgeon D,Prusevich A,Green P,Glidden S,Bunn SE,Sullivan CA,Liermann CR,Davies PM

更新日期：2010-09-30 00:00:00

abstract：:Novel biochemical processes using magnetic particles have been automated to provide a robotic system to perform processes for large-scale shotgun sequencing. ...

journal_title：Nature

authors： Watson A,Smaldon N,Lucke R,Hawkins T

更新日期：1993-04-08 00:00:00

abstract：:It has been proposed that the trans-sarcolemmal influx of Ca2+ occurring during the plateau of the mammalian cardiac action potentials is insufficient in itself to activate the myofilaments, but can trigger a release of Ca2+ from the sarcoplasmic reticulum (SR) which is sufficient for activation. The demonstration of ...

journal_title：Nature

authors： Fabiato A,Fabiato F

更新日期：1979-09-13 00:00:00

abstract：:Neurotransmitter release is initiated by influx of Ca2+ through voltage-gated Ca2+ channels, within 200 microseconds of the action potential arriving at the synaptic terminal, as the Ca2+ concentration increases from 100 nM to > 200 microM. Exocytosis requires high Ca2+ concentration, with a threshold of 20-50 microM ...

journal_title：Nature

authors： Sheng ZH,Rettig J,Cook T,Catterall WA

更新日期：1996-02-01 00:00:00

abstract：:One simple, widely accepted mechanism for generating an aberrant chromosome number, or aneuploidy, is through nondisjunction--a chromosome distribution error that occurs during mitosis when both copies of a duplicated chromosome are deposited into one daughter cell and none into the other. Shi and King challenge this ...

journal_title：Nature

authors： Weaver BA,Silk AD,Cleveland DW

更新日期：2006-08-17 00:00:00

abstract：:The cloning of mammals from differentiated donor cells has refuted the old dogma that development is an irreversible process. It has demonstrated that the oocyte can reprogramme an adult nucleus into an embryonic state that can direct development of a new organism. The prospect of deriving patient-specific embryonic s...

journal_title：Nature

authors： Hochedlinger K,Jaenisch R

更新日期：2006-06-29 00:00:00

abstract：:Stimulation of transient increases in intracellular calcium (Cai2+) activates protein kinases, regulates transcription and influences motility and morphology. Developing neurons generate spontaneous Cai2+ transients, but their role in directing neuronal differentiation and the way in which they encode information are ...

journal_title：Nature

authors： Gu X,Spitzer NC

更新日期：1995-06-29 00:00:00