Structural polymorphism of bacterial adhesion pili.

abstract：:Hunter-Schreger bands (HSB) are seen in teeth that are composed of crossed sets of enamel prisms. They are present in the teeth of man and many other mammals, but absent in most insectivores and multituberculates. It has been suggested that the presence of HSB makes the tooth enamel less likely to split and is associa...

journal_title：Nature

authors： von Koenigswald W,Rensberger JM,Pretzschner HU

更新日期：1987-07-09 00:00:00

abstract：:Type II DNA topoisomerases are ubiquitous ATP-dependent enzymes capable of transporting a DNA through a transient double-strand break in a second DNA segment. This enables them to untangle DNA and relax the interwound supercoils (plectonemes) that arise in twisted DNA. In vivo, they are responsible for untangling repl...

journal_title：Nature

authors： Strick TR,Croquette V,Bensimon D

更新日期：2000-04-20 00:00:00

abstract：:The Kyoto Protocol permits countries to meet part of their emission reduction obligations by cutting back on gases other than CO2 (ref. 1). This approach requires a definition of trade-offs among the radiatively active gases. The Intergovernmental Panel on Climate Change has suggested global warming potentials for thi...

journal_title：Nature

authors： Manne AS,Richels RG

更新日期：2001-04-05 00:00:00

abstract：:The heavy (H) and light (L) chains of antibodies consist of variable (V) and constant (C) regions. The V regions of the heavy and light chains form the antibody combining site. To determine whether a V region could be functional when joined to a polypeptide other than its own C region, we constructed a chimaeric gene ...

journal_title：Nature

authors： Sharon J,Gefter ML,Manser T,Morrison SL,Oi VT,Ptashne M

更新日期：1984-05-24 00:00:00

abstract：:Reorganizations of the Atlantic meridional overturning circulation were associated with large and abrupt climatic changes in the North Atlantic region during the last glacial period. Projections with climate models suggest that similar reorganizations may also occur in response to anthropogenic global warming. Here I ...

journal_title：Nature

authors： Schmittner A

更新日期：2005-03-31 00:00:00

abstract：:Extremely intense and ultrafast X-ray pulses from free-electron lasers offer unique opportunities to study fundamental aspects of complex transient phenomena in materials. Ultrafast time-resolved methods usually require highly synchronized pulses to initiate a transition and then probe it after a precisely defined tim...

journal_title：Nature

authors： Chapman HN,Hau-Riege SP,Bogan MJ,Bajt S,Barty A,Boutet S,Marchesini S,Frank M,Woods BW,Benner WH,London RA,Rohner U,Szöke A,Spiller E,Möller T,Bostedt C,Shapiro DA,Kuhlmann M,Treusch R,Plönjes E,Burmeister F,Ber

更新日期：2007-08-09 00:00:00

abstract：:The cyclin-dependent kinases 4 and 6 (Cdk4/6) that control the G1 phase of the cell cycle and their inhibitor, the p16INK4a tumour suppressor, have a central role in cell proliferation and in tumorigenesis. The structures of Cdk6 bound to p16INK4a and to the related p19INK4d reveal that the INK4 inhibitors bind next t...

journal_title：Nature

authors： Russo AA,Tong L,Lee JO,Jeffrey PD,Pavletich NP

更新日期：1998-09-17 00:00:00

abstract：:DNA methylation has a profound impact on genome stability, transcription and development. Although enzymes that catalyse DNA methylation have been well characterized, those that are involved in methyl group removal have remained elusive, until recently. The transformative discovery that ten-eleven translocation (TET) ...

journal_title：Nature

authors： Kohli RM,Zhang Y

更新日期：2013-10-24 00:00:00

abstract：:Mutation of the XRCC4 gene in mammalian cells prevents the formation of the signal and coding joints in the V(D)J recombination reaction, which is necessary for production of a functional immunoglobulin gene, and renders the cells highly sensitive to ionizing radiation. However, XRCC4 shares no sequence homology with ...

journal_title：Nature

authors： Grawunder U,Wilm M,Wu X,Kulesza P,Wilson TE,Mann M,Lieber MR

更新日期：1997-07-31 00:00:00

abstract：:The import of nuclear proteins proceeds through the nuclear pore complex and requires nuclear localization signals (NLSs), energy and soluble factors, namely importin-alpha (M(r) 60K), importin-beta (90K) and Ran. Importin-alpha is primarily responsible for NLS recognition and is a member of a protein family that incl...

journal_title：Nature

authors： Görlich D,Vogel F,Mills AD,Hartmann E,Laskey RA

更新日期：1995-09-21 00:00:00

abstract：:The signal recognition particle (SRP) consists of one RNA and six protein subunits. The N-terminal domain of the 54K subunit contains a putative GTP-binding site, whereas the C-terminal domain binds signal sequences and SRP RNA. Binding of SRP to the signal sequence as it emerges from the ribosome creates a cytosolic ...

journal_title：Nature

authors： Miller JD,Wilhelm H,Gierasch L,Gilmore R,Walter P

更新日期：1993-11-25 00:00:00

abstract：:Deuterostomes are a remarkably diverse super-phylum, including not only the chordates (to which we belong) but groups as disparate as the echinoderms and the hemichordates. The phylogeny of deuterostomes is now achieving some degree of stability, especially on account of new molecular data, but this leaves as conjectu...

journal_title：Nature

authors： Shu DG,Morris SC,Han J,Zhang ZF,Liu JN

更新日期：2004-07-22 00:00:00

abstract：:The 30S ribosomal subunit binds messenger RNA and the anticodon stem-loop of transfer RNA during protein synthesis. A crystallographic analysis of the structure of the subunit from the bacterium Thermus thermophilus is presented. At a resolution of 5.5 A, the phosphate backbone of the ribosomal RNA is visible, as are ...

journal_title：Nature

authors： Clemons WM Jr,May JL,Wimberly BT,McCutcheon JP,Capel MS,Ramakrishnan V

更新日期：1999-08-26 00:00:00

abstract：:Extracellular signalling by the purine nucleotide ATP has long been associated with sensory function. In the periphery, ATP mediates nociception, mechanosensitivity, thermal sensitivity and O2 chemosensitivity. These processes share a common mechanism that involves the release of ATP to excite afferent fibres via acti...

journal_title：Nature

authors： Gourine AV,Llaudet E,Dale N,Spyer KM

更新日期：2005-07-07 00:00:00

abstract：:The Gram-negative bacterium Myxococcus xanthus has a complex life cycle during which large amounts of a protein of relative molecular mass (Mr) 19,000, known as protein S, are assembled into a spore surface coat by a process that specifically requires calcium ions. The gene for protein S has been cloned and the DNA se...

journal_title：Nature

authors： Wistow G,Summers L,Blundell T

更新日期：1985-06-27 00:00:00

abstract：:Tuberculosis is the leading cause of death in the world resulting from a single bacterial infection. Despite its enormous burden on world health, little is known about the molecular mechanisms of pathogenesis of Mycobacterium tuberculosis. Bacterial multiplication and concomitant tissue damage within an infected host,...

journal_title：Nature

authors： Cox JS,Chen B,McNeil M,Jacobs WR Jr

更新日期：1999-11-04 00:00:00

abstract：:Alzheimer's disease (AD) is characterized by deposition of amyloid-β (Aβ) plaques and neurofibrillary tangles in the brain, accompanied by synaptic dysfunction and neurodegeneration. Antibody-based immunotherapy against Aβ to trigger its clearance or mitigate its neurotoxicity has so far been unsuccessful. Here we rep...

journal_title：Nature

authors： Sevigny J,Chiao P,Bussière T,Weinreb PH,Williams L,Maier M,Dunstan R,Salloway S,Chen T,Ling Y,O'Gorman J,Qian F,Arastu M,Li M,Chollate S,Brennan MS,Quintero-Monzon O,Scannevin RH,Arnold HM,Engber T,Rhodes K,Ferr

更新日期：2016-09-01 00:00:00

abstract：:The protein TFIIB is a general transcription initiation factor that interacts with a promoter complex (D.DNA) containing the TATA-binding subunit (TFIID tau, or TBP) of TFIID to facilitate subsequent interaction with RNA polymerase II (ref. 2) through the associated TFIIF (ref. 3). The potential bridging function of T...

journal_title：Nature

authors： Hisatake K,Roeder RG,Horikoshi M

更新日期：1993-06-24 00:00:00

abstract：:Haemophilia B (Christmas disease) is an inherited, recessive, sex-linked, haemorrhagic condition caused by a defect in the intrinsic clotting factor IX. This disease occurs in males at a frequency of approximately 1 in 30,000. Patients differ in the severity of their clinical symptoms, and variation in the clotting ac...

journal_title：Nature

authors： Rees DJ,Rizza CR,Brownlee GG

更新日期：1985-08-15 00:00:00

abstract：:Patterning matter on the nanometre scale is an important objective of current materials chemistry and physics. It is driven by both the need to further miniaturize electronic components and the fact that at the nanometre scale, materials properties are strongly size-dependent and thus can be tuned sensitively. In nano...

journal_title：Nature

authors： Alivisatos AP,Johnsson KP,Peng X,Wilson TE,Loweth CJ,Bruchez MP Jr,Schultz PG

更新日期：1996-08-15 00:00:00

abstract：:Neutralizing antibody function provides a foundation for the efficacy of vaccines and therapies1-3. Here, using a robust in vitro Ebola virus (EBOV) pseudo-particle infection assay and a well-defined set of solid-phase assays, we describe a wide spectrum of antibody responses in a cohort of healthy survivors of the Si...

journal_title：Nature

authors： Adaken C,Scott JT,Sharma R,Gopal R,Dicks S,Niazi S,Ijaz S,Edwards T,Smith CC,Cole CP,Kamara P,Kargbo O,Doughty HA,van Griensven J,Horby PW,Gevao SM,Sahr F,Ebola-CP Consortium.,Dimelow RJ,Tedder RS,Semple MG,Paxt

更新日期：2021-01-27 00:00:00

abstract：:China is the world's most populous country and a major emitter of greenhouse gases. Consequently, much research has focused on China's influence on climate change but somewhat less has been written about the impact of climate change on China. China experienced explosive economic growth in recent decades, but with only...

journal_title：Nature

authors： Piao S,Ciais P,Huang Y,Shen Z,Peng S,Li J,Zhou L,Liu H,Ma Y,Ding Y,Friedlingstein P,Liu C,Tan K,Yu Y,Zhang T,Fang J

更新日期：2010-09-02 00:00:00

abstract：:RNA polymerase (Pol) II produces messenger RNA during transcription of protein-coding genes in all eukaryotic cells. The Pol II structure is known at high resolution from X-ray crystallography for two yeast species. Structural studies of mammalian Pol II, however, remain limited to low-resolution electron microscopy a...

journal_title：Nature

authors： Bernecky C,Herzog F,Baumeister W,Plitzko JM,Cramer P

更新日期：2016-01-28 00:00:00

abstract：:Human activities are causing Earth's sixth major extinction event-an accelerating decline of the world's stocks of biological diversity at rates 100 to 1,000 times pre-human levels. Historically, low-impact intrusion into species habitats arose from local demands for food, fuel and living space. However, in today's in...

journal_title：Nature

authors： Lenzen M,Moran D,Kanemoto K,Foran B,Lobefaro L,Geschke A

更新日期：2012-06-06 00:00:00

abstract：:Online hate and extremist narratives have been linked to abhorrent real-world events, including a current surge in hate crimes1-6 and an alarming increase in youth suicides that result from social media vitriol7; inciting mass shootings such as the 2019 attack in Christchurch, stabbings and bombings8-11; recruitment o...

journal_title：Nature

authors： Johnson NF,Leahy R,Restrepo NJ,Velasquez N,Zheng M,Manrique P,Devkota P,Wuchty S

更新日期：2019-09-01 00:00:00

abstract：:The growth of plants depends on continuous function of the meristems. Shoot meristems are responsible for all the post-embryonic aerial organs, such as leaves, stems and flowers. It has been assumed that the phytohormone cytokinin has a positive role in shoot meristem function. A severe reduction in the size of merist...

journal_title：Nature

authors： Kurakawa T,Ueda N,Maekawa M,Kobayashi K,Kojima M,Nagato Y,Sakakibara H,Kyozuka J

更新日期：2007-02-08 00:00:00

abstract：:Arachidonic acid is metabolised either by cyclooxygenases to produce prostaglandins and thromboxanes or by lipoxygenases to produce mono-, di- and trihydroxyeicosatetraenoic acids (HETEs). Polymorphonuclear leukocytes (PMNs) release HETEs, including mono- and dihydroxy fatty acids, when exposed to stimuli such as the ...

journal_title：Nature

authors： Ford-Hutchinson AW,Bray MA,Doig MV,Shipley ME,Smith MJ

更新日期：1980-07-17 00:00:00

abstract：:Fresnel lenses allow almost perfect imaging in widely different circumstances, but their focus is perfect only for a single wavelength. Wang et al. have shown how the effective bandpass may be widened for X-ray microscopy by using a compound diffractive/refractive lens near to an absorption edge. A compound lens has a...

journal_title：Nature

authors： Skinner G,Gorenstein P

更新日期：2003-11-20 00:00:00

abstract：:Thrombosis--localized clotting of the blood--can occur in the arterial or the venous circulation and has a major medical impact. Acute arterial thrombosis is the proximal cause of most cases of myocardial infarction (heart attack) and of about 80% of strokes, collectively the most common cause of death in the develope...

journal_title：Nature

authors： Mackman N

更新日期：2008-02-21 00:00:00

abstract：:The retinotectal projection has long been studied experimentally and theoretically, as a model for the formation of topographic brain maps. Neighbouring retinal ganglion cells (RGCs) project their axons to neighbouring positions in the optic tectum, thus re-establishing a continuous neural representation of visual spa...

journal_title：Nature

authors： Gosse NJ,Nevin LM,Baier H

更新日期：2008-04-17 00:00:00