Detection of ozone on Saturn's satellites Rhea and Dione.

abstract：:RecBCD is a multi-functional enzyme complex that processes DNA ends resulting from a double-strand break. RecBCD is a bipolar helicase that splits the duplex into its component strands and digests them until encountering a recombinational hotspot (Chi site). The nuclease activity is then attenuated and RecBCD loads Re...

journal_title：Nature

authors： Singleton MR,Dillingham MS,Gaudier M,Kowalczykowski SC,Wigley DB

更新日期：2004-11-11 00:00:00

abstract：:Acyl carrier protein (ACP) transports the growing fatty acid chain between enzymatic domains of fatty acid synthase (FAS) during biosynthesis. Because FAS enzymes operate on ACP-bound acyl groups, ACP must stabilize and transport the growing lipid chain. ACPs have a central role in transporting starting materials and ...

journal_title：Nature

authors： Nguyen C,Haushalter RW,Lee DJ,Markwick PR,Bruegger J,Caldara-Festin G,Finzel K,Jackson DR,Ishikawa F,O'Dowd B,McCammon JA,Opella SJ,Tsai SC,Burkart MD

更新日期：2014-01-16 00:00:00

abstract：:Unicellular organisms such as yeasts require a single cyclin-dependent kinase, Cdk1, to drive cell division. In contrast, mammalian cells are thought to require the sequential activation of at least four different cyclin-dependent kinases, Cdk2, Cdk3, Cdk4 and Cdk6, to drive cells through interphase, as well as Cdk1 t...

journal_title：Nature

authors： Santamaría D,Barrière C,Cerqueira A,Hunt S,Tardy C,Newton K,Cáceres JF,Dubus P,Malumbres M,Barbacid M

更新日期：2007-08-16 00:00:00

abstract：:DEET (N,N-diethyl-meta-toluamide) is a synthetic chemical identified by the US Department of Agriculture in 1946 in a screen for repellents to protect soldiers from mosquito-borne diseases1,2. Since its discovery, DEET has become the world's most widely used arthropod repellent and is effective against invertebrates s...

journal_title：Nature

authors： Dennis EJ,Dobosiewicz M,Jin X,Duvall LB,Hartman PS,Bargmann CI,Vosshall LB

更新日期：2018-10-01 00:00:00

abstract：:Silbo Gomero is a whistled language that is a rare and endangered surrogate of Spanish, used by shepherds on the island of La Gomera in the Canary Islands for communication over long distances on difficult terrain. Here we show that areas of the brain normally associated with spoken-language function are also activate...

journal_title：Nature

authors： Carreiras M,Lopez J,Rivero F,Corina D

更新日期：2005-01-06 00:00:00

abstract：:In vitro studies of muscle mitochondrial metabolism in patients with mitochondrial myopathy have identified a variety of functional defects of the mitochondrial respiratory chain, predominantly affecting complex I (NADH-CoQ reductase) or complex III (ubiquinol-cytochrome c reductase) in adult cases. These two enzymes ...

journal_title：Nature

authors： Holt IJ,Harding AE,Morgan-Hughes JA

更新日期：1988-02-25 00:00:00

abstract：:Precipitation and atmospheric circulation are the coupled processes through which tropical ocean surface temperatures drive global weather and climate1-5. Local sea surface warming tends to increase precipitation, but this local control is difficult to disentangle from remote effects of conditions elsewhere. As an exa...

journal_title：Nature

authors： Good P,Chadwick R,Holloway CE,Kennedy J,Lowe JA,Roehrig R,Rushley SS

更新日期：2021-01-01 00:00:00

abstract：:The ability to excise (repair) UV-induced pyrimidine dimers in Escherichia coli is not related to its ability to remove N-methyl-N'-nitro-N-nitrosoguanidine (MNNG)-induced O6-methylguanine (O6-MeG) from DNA. It was therefore surprising that certain xeroderma pigmentosum cell lines, deficient in dimer excision, were al...

journal_title：Nature

authors： Sklar R,Strauss B

更新日期：1981-01-29 00:00:00

abstract：:Mycorrhizae, the symbiotic associations of plant roots and fungal hyphae, are classic examples of mutualisms. In these ecologically important associations, the fungi derive photosynthetic sugars from their plant hosts, which in turn benefit from fungus-mediated uptake of mineral nutrients. Early views on the evolution...

journal_title：Nature

authors： Hibbett DS,Gilbert LB,Donoghue MJ

更新日期：2000-09-28 00:00:00

abstract：:Osteoclasts are multinucleated giant cells that resorb bone, ensuring development and continuous remodelling of the skeleton and the bone marrow haematopoietic niche. Defective osteoclast activity leads to osteopetrosis and bone marrow failure1-9, whereas excess activity can contribute to bone loss and osteoporosis10....

journal_title：Nature

authors： Jacome-Galarza CE,Percin GI,Muller JT,Mass E,Lazarov T,Eitler J,Rauner M,Yadav VK,Crozet L,Bohm M,Loyher PL,Karsenty G,Waskow C,Geissmann F

更新日期：2019-04-01 00:00:00

abstract：:Transport of fermions, particles with half-integer spin, is central to many fields of physics. Electron transport runs modern technology, defining states of matter such as superconductors and insulators, and electron spin is being explored as a new carrier of information. Neutrino transport energizes supernova explosi...

journal_title：Nature

authors： Sommer A,Ku M,Roati G,Zwierlein MW

更新日期：2011-04-14 00:00:00

abstract：:Membrane-enclosed organelles, a defining characteristic of eukaryotic cells, are lost during differentiation of specific cell types such as reticulocytes (an intermediate in differentiation of erythrocytes), central fibre cells of the eye lens, and keratinocytes. The degradation of these organelles must be tightly reg...

journal_title：Nature

authors： van Leyen K,Duvoisin RM,Engelhardt H,Wiedmann M

更新日期：1998-09-24 00:00:00

abstract：:Representations of sensory stimuli in the cerebral cortex can undergo progressive remodelling according to the behavioural importance of the stimuli. The cortex receives widespread projections from dopamine neurons in the ventral tegmental area (VTA), which are activated by new stimuli or unpredicted rewards, and are ...

journal_title：Nature

authors： Bao S,Chan VT,Merzenich MM

更新日期：2001-07-05 00:00:00

abstract：:A main limitation of therapies that selectively target kinase signalling pathways is the emergence of secondary drug resistance. Cetuximab, a monoclonal antibody that binds the extracellular domain of epidermal growth factor receptor (EGFR), is effective in a subset of KRAS wild-type metastatic colorectal cancers. Aft...

journal_title：Nature

authors： Misale S,Yaeger R,Hobor S,Scala E,Janakiraman M,Liska D,Valtorta E,Schiavo R,Buscarino M,Siravegna G,Bencardino K,Cercek A,Chen CT,Veronese S,Zanon C,Sartore-Bianchi A,Gambacorta M,Gallicchio M,Vakiani E,Boscaro V,

更新日期：2012-06-28 00:00:00

abstract：:Attempts to inhibit the recognition of soluble antigens by T lymphocytes using antibodies specific for the antigen in question have been uniformally unsuccessful, in contrast to the observed specific inhibition of antibody generation by B cells. One exception is the unique situation whereby anti-hapten antisera inhibi...

journal_title：Nature

authors： Corradin G,Engers HD

更新日期：1984-04-05 00:00:00

abstract：:Morphogens act in developing tissues to control the spatial arrangement of cellular differentiation. The activity of a morphogen has generally been viewed as a concentration-dependent response to a diffusible signal, but the duration of morphogen signalling can also affect cellular responses. One such example is the m...

journal_title：Nature

authors： Dessaud E,Yang LL,Hill K,Cox B,Ulloa F,Ribeiro A,Mynett A,Novitch BG,Briscoe J

更新日期：2007-11-29 00:00:00

abstract：:Experimental and simulation studies show that small monomeric proteins fold in one kinetic step, which entails overcoming the free-energy barrier between the unfolded and the native protein through a transition state. Two models of transition state formation have been proposed: a 'nonspecific' one in which it depends ...

journal_title：Nature

authors： Shakhnovich E,Abkevich V,Ptitsyn O

更新日期：1996-01-04 00:00:00

abstract：:The biosynthesis of several protein cofactors is subject to feedback regulation by riboswitches. Flavin mononucleotide (FMN)-specific riboswitches, also known as RFN elements, direct expression of bacterial genes involved in the biosynthesis and transport of riboflavin (vitamin B(2)) and related compounds. Here we pre...

journal_title：Nature

authors： Serganov A,Huang L,Patel DJ

更新日期：2009-03-12 00:00:00

abstract：:The Fanconi anaemia (FA) pathway repairs DNA damage caused by endogenous and chemotherapy-induced DNA crosslinks, and responds to replication stress1,2. Genetic inactivation of this pathway by mutation of genes encoding FA complementation group (FANC) proteins impairs development, prevents blood production and promote...

journal_title：Nature

authors： Shakeel S,Rajendra E,Alcón P,O'Reilly F,Chorev DS,Maslen S,Degliesposti G,Russo CJ,He S,Hill CH,Skehel JM,Scheres SHW,Patel KJ,Rappsilber J,Robinson CV,Passmore LA

更新日期：2019-11-01 00:00:00

abstract：:The evolutionary biologist "studies the steps by which the miraculous adaptations so characteristic of every aspect of the organic world have evolved". But the general nature of such adaptive steps is still unclear. Evolution is often thought to be random and dependent on unpredictable events. In this light, one might...

journal_title：Nature

authors： Gerrish P

更新日期：2001-09-20 00:00:00

abstract：:Long-term reconstitution of the lymphohaematopoietic cells of a mouse after lethal irradiation requires the transplantation of at least (5-10) x 10(3) bone marrow cells. Several cell-separation techniques based on cell-surface characteristics have been used in attempts to identify the pluripotent haematopoietic stem c...

journal_title：Nature

authors： Jones RJ,Wagner JE,Celano P,Zicha MS,Sharkis SJ

更新日期：1990-09-13 00:00:00

abstract：:If not properly processed and repaired, DNA double-strand breaks (DSBs) can give rise to deleterious chromosome rearrangements, which could ultimately lead to the tumour phenotype. DSB ends are resected in a 5' to 3' fashion in cells, to yield single-stranded DNA (ssDNA) for the recruitment of factors critical for DNA...

journal_title：Nature

authors： Niu H,Chung WH,Zhu Z,Kwon Y,Zhao W,Chi P,Prakash R,Seong C,Liu D,Lu L,Ira G,Sung P

更新日期：2010-09-02 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：:Blood vessel growth in the skeletal system and osteogenesis seem to be coupled, suggesting the existence of molecular crosstalk between endothelial and osteoblastic cells. Understanding the nature of the mechanisms linking angiogenesis and bone formation should be of great relevance for improved fracture healing or pr...

journal_title：Nature

authors： Ramasamy SK,Kusumbe AP,Wang L,Adams RH

更新日期：2014-03-20 00:00:00

abstract：:When an intense laser pulse is focused into a gas, the light-atom interaction that occurs as atoms are ionized results in an extremely nonlinear optical process--the generation of high harmonics of the driving laser frequency. Harmonics that extend up to orders of about 300 have been reported, some corresponding to ph...

journal_title：Nature

authors： Bartels R,Backus S,Zeek E,Misoguti L,Vdovin G,Christov IP,Murnane MM,Kapteyn HC

更新日期：2000-07-13 00:00:00

abstract：:Transmissible spongiform encephalopathies are associated with accumulation of PrP(Sc), a conformer of a cellular protein called PrP(C). PrP(Sc) is thought to replicate by imparting its conformation onto PrP(C) (ref. 1), yet conformational discrimination between PrP(C) and PrP(Sc) has remained elusive. Because depositi...

journal_title：Nature

authors： Fischer MB,Roeckl C,Parizek P,Schwarz HP,Aguzzi A

更新日期：2000-11-23 00:00:00

abstract：:Miocene hominoid material is very scarce and has previously only been reported as cranial fragments in the Old World. Here we describe a new specimen of Ouranopithecus macedoniensis, which consists of the right part of the face of an adult male with a portion of the frontal bone, a portion of the left part of the face...

journal_title：Nature

authors： de Bonis L,Bouvrain G,Geraads D,Koufos G

更新日期：1990-06-21 00:00:00

abstract：:A human myelomonocytic cell line, U937, produced an interleukin-1 (IL-1) receptor antagonist protein (IRAP) which was purified and partially sequenced. A complementary DNA coding for IRAP was cloned and sequenced. The mature translation product of the cDNA has been expressed in Escherichia coli and was an active compe...

journal_title：Nature

authors： Carter DB,Deibel MR Jr,Dunn CJ,Tomich CS,Laborde AL,Slightom JL,Berger AE,Bienkowski MJ,Sun FF,McEwan RN

更新日期：1990-04-12 00:00:00

abstract：:Cation-selective P2X receptor channels were first described in sensory neurons where they are important for primary afferent neurotransmission and nociception. Here we report the cloning of a complementary DNA (P2X3) from rat dorsal root ganglia that had properties dissimilar to those of sensory neurons. We also found...

journal_title：Nature

authors： Lewis C,Neidhart S,Holy C,North RA,Buell G,Surprenant A

更新日期：1995-10-05 00:00:00

abstract：:Climate models with increased levels of carbon dioxide predict that global warming causes heating in the tropics, but investigations of ancient climates based on palaeodata have generally indicated cool tropical temperatures during supposed greenhouse episodes. For example, in the Late Cretaceous and Eocene epochs the...

journal_title：Nature

authors： Pearson PN,Ditchfield PW,Singano J,Harcourt-Brown KG,Nicholas CJ,Olsson RK,Shackleton NJ,Hall MA

更新日期：2001-10-04 00:00:00