Cell-specific expression controlled by the 5'-flanking region of insulin and chymotrypsin genes.

abstract：:The enzyme isopenicillin N synthetase (IPS) catalyses the oxidative condensation of delta-(L-alpha-aminoadipyl)-L-cysteinyl-D-valine (LLD-ACV) to isopenicillin N, which is a central reaction in the pathway to clinically important penicillins and cephalosporins. Here we report the cloning, characterization and expressi...

journal_title：Nature

authors： Samson SM,Belagaje R,Blankenship DT,Chapman JL,Perry D,Skatrud PL,VanFrank RM,Abraham EP,Baldwin JE,Queener SW

更新日期：1985-11-14 00:00:00

abstract：:The uranyl ion (UO22+; U(VI) oxidation state) is the most common form of uranium found in terrestrial and aquatic environments and is a central component in nuclear fuel processing and waste remediation efforts. Uranyl capture from either seawater or nuclear waste has been well studied and typically relies on extremel...

journal_title：Nature

authors： Keener M,Hunt C,Carroll TG,Kampel V,Dobrovetsky R,Hayton TW,Ménard G

更新日期：2020-01-01 00:00:00

abstract：:Quantum computation, a paradigm of computing that is completely different from classical methods, benefits from theoretically proved speed-ups for certain problems and can be used to study the properties of quantum systems1. Yet, because of the inherently fragile nature of the physical computing elements (qubits), ach...

journal_title：Nature

authors： Kandala A,Temme K,Córcoles AD,Mezzacapo A,Chow JM,Gambetta JM

更新日期：2019-03-01 00:00:00

abstract：:Vaccines rarely provide full protection from disease. Nevertheless, partially effective (imperfect) vaccines may be used to protect both individuals and whole populations. We studied the potential impact of different types of imperfect vaccines on the evolution of pathogen virulence (induced host mortality) and the co...

journal_title：Nature

authors： Gandon S,Mackinnon MJ,Nee S,Read AF

更新日期：2001-12-13 00:00:00

abstract：:The ubiquity of tertiary alkylamines in pharmaceutical and agrochemical agents, natural products and small-molecule biological probes1,2 has stimulated efforts towards their streamlined synthesis3-9. Arguably the most robust method for the synthesis of tertiary alkylamines is carbonyl reductive amination3, which compr...

journal_title：Nature

authors： Kumar R,Flodén NJ,Whitehurst WG,Gaunt MJ

更新日期：2020-05-01 00:00:00

abstract：:Certain bacteria promote the formation of ice in super-cooled water by means of ice nucleators which contain a unique protein associated with the cell membrane. Ice nucleators in general are believed to act by mimicking the structure of an ice crystal surface, thus imposing an ice-like arrangement on the water molecul...

journal_title：Nature

authors： Parody-Morreale A,Murphy KP,Di Cera E,Fall R,DeVries AL,Gill SJ

更新日期：1988-06-23 00:00:00

abstract：:State-of-the-art optical clocks1 achieve precisions of 10-18 or better using ensembles of atoms in optical lattices2,3 or individual ions in radio-frequency traps4,5. Promising candidates for use in atomic clocks are highly charged ions6 (HCIs) and nuclear transitions7, which are largely insensitive to external pertur...

journal_title：Nature

authors： Schüssler RX,Bekker H,Braß M,Cakir H,Crespo López-Urrutia JR,Door M,Filianin P,Harman Z,Haverkort MW,Huang WJ,Indelicato P,Keitel CH,König CM,Kromer K,Müller M,Novikov YN,Rischka A,Schweiger C,Sturm S,Ulmer S,Elis

更新日期：2020-05-01 00:00:00

abstract：:Human apolipoprotein E has three isoforms: APOE2, APOE3 and APOE4. APOE4 is a major genetic risk factor for Alzheimer's disease and is associated with Down's syndrome dementia and poor neurological outcome after traumatic brain injury and haemorrhage. Neurovascular dysfunction is present in normal APOE4 carriers and i...

journal_title：Nature

authors： Bell RD,Winkler EA,Singh I,Sagare AP,Deane R,Wu Z,Holtzman DM,Betsholtz C,Armulik A,Sallstrom J,Berk BC,Zlokovic BV

更新日期：2012-05-16 00:00:00

abstract：:B lymphocytes re-circulate between B-cell-rich compartments (follicles or B zones) in secondary lymphoid organs, surveying for antigen. After antigen binding, B cells move to the boundary of B and T zones to interact with T-helper cells. Despite the importance of B--T-cell interactions for the induction of antibody re...

journal_title：Nature

authors： Reif K,Ekland EH,Ohl L,Nakano H,Lipp M,Förster R,Cyster JG

更新日期：2002-03-07 00:00:00

abstract：:Plasmacytoid dendritic cells (pDCs) sense viral and microbial DNA through endosomal Toll-like receptors to produce type 1 interferons. pDCs do not normally respond to self-DNA, but this restriction seems to break down in human autoimmune disease by an as yet poorly understood mechanism. Here we identify the antimicrob...

journal_title：Nature

authors： Lande R,Gregorio J,Facchinetti V,Chatterjee B,Wang YH,Homey B,Cao W,Wang YH,Su B,Nestle FO,Zal T,Mellman I,Schröder JM,Liu YJ,Gilliet M

更新日期：2007-10-04 00:00:00

abstract：:Extant vertebrates form two clades, the jawless Cyclostomata (lampreys and hagfishes) and the jawed Gnathostomata (all other vertebrates), with contrasting facial architectures. These arise during development from just a few key differences in the growth patterns of the cranial primordia: notably, the nasal sacs and h...

journal_title：Nature

authors： Dupret V,Sanchez S,Goujet D,Tafforeau P,Ahlberg PE

更新日期：2014-03-27 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：:Type-A γ-aminobutyric (GABAA) receptors are ligand-gated chloride channels with a very rich pharmacology. Some of their modulators, including benzodiazepines and general anaesthetics, are among the most successful drugs in clinical use and are common substances of abuse. Without reliable structural data, the mechanist...

journal_title：Nature

authors： Masiulis S,Desai R,Uchański T,Serna Martin I,Laverty D,Karia D,Malinauskas T,Zivanov J,Pardon E,Kotecha A,Steyaert J,Miller KW,Aricescu AR

更新日期：2019-01-01 00:00:00

abstract：:The sequencing of ancient DNA has enabled the reconstruction of speciation, migration and admixture events for extinct taxa1. However, the irreversible post-mortem degradation2 of ancient DNA has so far limited its recovery-outside permafrost areas-to specimens that are not older than approximately 0.5 million years (...

journal_title：Nature

authors： Cappellini E,Welker F,Pandolfi L,Ramos-Madrigal J,Samodova D,Rüther PL,Fotakis AK,Lyon D,Moreno-Mayar JV,Bukhsianidze M,Rakownikow Jersie-Christensen R,Mackie M,Ginolhac A,Ferring R,Tappen M,Palkopoulou E,Dickinson MR,S

更新日期：2019-10-01 00:00:00

abstract：:Co-evolution between plants and their natural enemies is generally believed to have generated much of the Earth's biological diversity. A process analogous to co-evolution occurs in agricultural systems, in which natural enemies adapt to crop resistance introduced by breeding or genetic engineering. Because of this si...

journal_title：Nature

authors： Rausher MD

更新日期：2001-06-14 00:00:00

abstract：:There is increasing evidence that genome-wide association (GWA) studies represent a powerful approach to the identification of genes involved in common human diseases. We describe a joint GWA study (using the Affymetrix GeneChip 500K Mapping Array Set) undertaken in the British population, which has examined approxima...

journal_title：Nature

authors： Wellcome Trust Case Control Consortium.

更新日期：2007-06-07 00:00:00

abstract：:To mediate its survival and virulence, the malaria parasite Plasmodium falciparum exports hundreds of proteins into the host erythrocyte. To enter the host cell, exported proteins must cross the parasitophorous vacuolar membrane (PVM) within which the parasite resides, but the mechanism remains unclear. A putative Pla...

journal_title：Nature

authors： Beck JR,Muralidharan V,Oksman A,Goldberg DE

更新日期：2014-07-31 00:00:00

abstract：:It has been suggested that the initiation step in mouse skin carcinogenesis involves an alteration in epidermal-differentiation, as mouse basal keratinocytes exposed to initiators resist the arrest of cell growth that is normally associated with the induction of terminal differentiation by calcium ions. The growth of ...

journal_title：Nature

authors： Yuspa SH,Kilkenny AE,Stanley J,Lichti U

更新日期：1985-04-04 00:00:00

abstract：:The heat-shock protein Hsp90 supports diverse but specific signal transducers and lies at the interface of several developmental pathways. We report here that when Drosophila Hsp90 is mutant or pharmacologically impaired, phenotypic variation affecting nearly any adult structure is produced, with specific variants dep...

journal_title：Nature

authors： Rutherford SL,Lindquist S

更新日期：1998-11-26 00:00:00

abstract：:The generation of strong serological responses to protein antigens in experimental animals usually requires the use of potent adjuvants, most of which cannot be used in human or veterinary vaccines because of deleterious side effects. Attempting to circumvent this problem, we have assessed an adjuvant-free antigen-del...

journal_title：Nature

authors： Carayanniotis G,Barber BH

更新日期：1987-05-07 00:00:00

abstract：:Serine proteases are present in virtually all organisms and function both inside and outside the cell; they exist as two families, the 'trypsin-like' and the 'subtilisin-like', that have independently evolved a similar catalytic device characterized by the Ser, His, Asp triad, an oxyanion binding site, and possibly ot...

journal_title：Nature

authors： Carter P,Wells JA

更新日期：1988-04-07 00:00:00

abstract：:Synapse assembly requires trans-synaptic signals between the pre- and postsynapse, but our understanding of the essential organizational molecules involved in this process remains incomplete. Teneurin proteins are conserved, epidermal growth factor (EGF)-repeat-containing transmembrane proteins with large extracellula...

journal_title：Nature

authors： Mosca TJ,Hong W,Dani VS,Favaloro V,Luo L

更新日期：2012-03-18 00:00:00

abstract：:The kidney has been widely exploited as a model system for the study of tissue inductions regulating vertebrate organogenesis. Kidney development is initiated by the ingrowth of the Wolfian duct-derived ureteric bud into the presumptive kidney mesenchyme. In response to a signal from the ureter, mesenchymal cells cond...

journal_title：Nature

authors： Stark K,Vainio S,Vassileva G,McMahon AP

更新日期：1994-12-15 00:00:00

abstract：:The bony skeleton is maintained by local factors that regulate bone-forming osteoblasts and bone-resorbing osteoclasts, in addition to hormonal activity. Osteoprotegerin protects bone by inhibiting osteoclastic bone resorption, but no factor has yet been identified as a local determinant of bone mass that regulates bo...

journal_title：Nature

authors： Hayashi M,Nakashima T,Taniguchi M,Kodama T,Kumanogoh A,Takayanagi H

更新日期：2012-05-03 00:00:00

abstract：:Organ-specific metastasis is governed, in part, by interactions between chemokine receptors on cancer cells and matching chemokines in target organs. For example, malignant breast cancer cells express the chemokine receptor CXCR4 and commonly metastasize to organs that are an abundant source of the CXCR4-specific liga...

journal_title：Nature

authors： Staller P,Sulitkova J,Lisztwan J,Moch H,Oakeley EJ,Krek W

更新日期：2003-09-18 00:00:00

abstract：:A soluble enzyme system has been discovered which specifically recognizes and replicates plasmids containing the Escherichia coli chromosomal origin, oriC. Electron microscopy has shown that plasmid replication begins at or near oriC from which it progresses bidirectionally to completion. Control of initiation of a cy...

journal_title：Nature

authors： Kaguni JM,Fuller RS,Kornberg A

更新日期：1982-04-15 00:00:00

abstract：:The largest products of magmatic activity on Earth, the great bodies of granite and their corresponding large eruptions, have a dual nature: homogeneity at the large scale and spatial and temporal heterogeneity at the small scale. This duality calls for a mechanism that selectively removes the large-scale heterogeneit...

journal_title：Nature

authors： Burgisser A,Bergantz GW

更新日期：2011-03-10 00:00:00

abstract：:Flaviviruses, when complexed with antibody at subneutralizing concentrations, show enhanced replication in human and simian peripheral blood leukocytes (ref. 1, and J.S.M.P. and J.S.P., unpublished observations) and in P388 D1 and other macrophage cell lines. A comparable phenomenon has been demonstrated with alphavir...

journal_title：Nature

authors： Peiris JS,Gordon S,Unkeless JC,Porterfield JS

更新日期：1981-01-15 00:00:00

abstract：:The concept of hierarchical bottom-up structuring commonly encountered in natural materials provides inspiration for the design of complex artificial materials with advanced functionalities. Natural processes have achieved the orchestration of multicomponent systems across many length scales with very high precision, ...

journal_title：Nature

authors： Gröschel AH,Walther A,Löbling TI,Schacher FH,Schmalz H,Müller AH

更新日期：2013-11-14 00:00:00

abstract：:To achieve stereoscopic vision, the brain must search for corresponding image features on the two retinas. As long as the eyes stay still, corresponding features are confined to narrow bands called epipolar lines. But when the eyes change position, the epipolar lines migrate on the retinas. To find the matching featur...

journal_title：Nature

authors： Schreiber K,Crawford JD,Fetter M,Tweed D

更新日期：2001-04-12 00:00:00