pH-sensitive activation of the intracellular-pH regulation system in squid axons by ATP-gamma-S.

abstract：:Haematopoiesis is a developmental cascade that generates all blood cell lineages in health and disease. This process relies on quiescent haematopoietic stem cells capable of differentiating, self renewing and expanding upon physiological demand. However, the mechanisms that regulate haematopoietic stem cell homeostasi...

journal_title：Nature

authors： Fonseca-Pereira D,Arroz-Madeira S,Rodrigues-Campos M,Barbosa IA,Domingues RG,Bento T,Almeida AR,Ribeiro H,Potocnik AJ,Enomoto H,Veiga-Fernandes H

更新日期：2014-10-02 00:00:00

abstract：:Outbreaks of haemorrhagic fever caused by the Ebola virus are associated with high mortality rates that are a distinguishing feature of this human pathogen. The highest lethality is associated with the Zaire subtype, one of four strains identified to date. Its rapid progression allows little opportunity to develop nat...

journal_title：Nature

authors： Sullivan NJ,Sanchez A,Rollin PE,Yang ZY,Nabel GJ

更新日期：2000-11-30 00:00:00

abstract：:ELLIPTICAL galaxies acting as gravitational lenses occasionally produce spectacular images-Einstein rings-of distant objects. Giant arcs(1) and radio rings(2) have been observed. A wide variety of image morphologies is possible, the generation of which is qualitatively understood in terms of large magnifications at ca...

journal_title：Nature

authors： Langston GI,Conner SR,Lehar J,Burke BF,Weiler KW

更新日期：1990-03-01 00:00:00

abstract：:The three-dimensional structure of the 67K amino-terminal fragment of Escherichia coli DNA topoisomerase I has been determined to 2.2 A resolution. The polypeptide folds in an unusual way to give four distinct domains enclosing a hole large enough to accommodate a double-stranded DNA. The active-site tyrosyl residue, ...

journal_title：Nature

authors： Lima CD,Wang JC,Mondragón A

更新日期：1994-01-13 00:00:00

abstract：:The Southern Ocean houses a diverse and productive community of organisms. Unicellular eukaryotic diatoms are the main primary producers in this environment, where photosynthesis is limited by low concentrations of dissolved iron and large seasonal fluctuations in light, temperature and the extent of sea ice. How diat...

journal_title：Nature

authors： Mock T,Otillar RP,Strauss J,McMullan M,Paajanen P,Schmutz J,Salamov A,Sanges R,Toseland A,Ward BJ,Allen AE,Dupont CL,Frickenhaus S,Maumus F,Veluchamy A,Wu T,Barry KW,Falciatore A,Ferrante MI,Fortunato AE,Glöckner

更新日期：2017-01-26 00:00:00

abstract：:Pancreatic ductal adenocarcinoma (PDAC) remains recalcitrant to all forms of cancer treatment and carries a five-year survival rate of only 8%1. Inhibition of oncogenic KRAS (hereafter KRAS*), the earliest lesion in disease development that is present in more than 90% of PDACs, and its signalling surrogates has yielde...

journal_title：Nature

authors： Yao W,Rose JL,Wang W,Seth S,Jiang H,Taguchi A,Liu J,Yan L,Kapoor A,Hou P,Chen Z,Wang Q,Nezi L,Xu Z,Yao J,Hu B,Pettazzoni PF,Ho IL,Feng N,Ramamoorthy V,Jiang S,Deng P,Ma GJ,Den P,Tan Z,Zhang SX,Wang H,

更新日期：2019-04-01 00:00:00

abstract：:In the prehistoric green Sahara of Holocene North Africa-in contrast to the Neolithic of Europe and Eurasia-a reliance on cattle, sheep and goats emerged as a stable and widespread way of life, long before the first evidence for domesticated plants or settled village farming communities. The remarkable rock art found ...

journal_title：Nature

authors： Dunne J,Evershed RP,Salque M,Cramp L,Bruni S,Ryan K,Biagetti S,di Lernia S

更新日期：2012-06-20 00:00:00

abstract：:The DNA of telomeres--the terminal DNA-protein complexes of chromosomes--differs notably from other DNA sequences in both structure and function. Recent work has highlighted its remarkable mode of synthesis by the ribonucleoprotein reverse transcriptase, telomerase, as well as its ability to form unusual structures in...

journal_title：Nature

authors： Blackburn EH

更新日期：1991-04-18 00:00:00

abstract：:Why sex prevails in nature remains one of the great puzzles of evolution. Sexual reproduction has an immediate cost relative to asexual reproduction, as males only express their contribution to population growth through females. With no males to sustain, an asexual mutant can double its relative representation in the ...

journal_title：Nature

authors： Doncaster CP,Pound GE,Cox SJ

更新日期：2000-03-16 00:00:00

abstract：:The Gulf Stream transports approximately 31 Sv (1 Sv = 10(6) m(3) s(-1)) of water and 1.3 x 10(15) W of heat into the North Atlantic ocean. The possibility of abrupt changes in Gulf Stream heat transport is one of the key uncertainties in predictions of climate change for the coming centuries. Given the limited length...

journal_title：Nature

authors： Lund DC,Lynch-Stieglitz J,Curry WB

更新日期：2006-11-30 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： DeRocher KA,Smeets PJM,Goodge BH,Zachman MJ,Balachandran PV,Stegbauer L,Cohen MJ,Gordon LM,Rondinelli JM,Kourkoutis LF,Joester D

更新日期：2020-08-01 00:00:00

abstract：:In 1994, two independent groups extracted DNA from several Pleistocene epoch mammoths and noted differences among individual specimens. Subsequently, DNA sequences have been published for a number of extinct species. However, such ancient DNA is often fragmented and damaged, and studies to date have typically focused ...

journal_title：Nature

authors： Miller W,Drautz DI,Ratan A,Pusey B,Qi J,Lesk AM,Tomsho LP,Packard MD,Zhao F,Sher A,Tikhonov A,Raney B,Patterson N,Lindblad-Toh K,Lander ES,Knight JR,Irzyk GP,Fredrikson KM,Harkins TT,Sheridan S,Pringle T,Schuste

更新日期：2008-11-20 00:00:00

abstract：:Excavations at the early Neolithic site of Jiahu in Henan Province, China have produced what may be the earliest complete, playable, tightly-dated multinote musical instruments. Jiahu was occupied from 7000 BC to 5700 BC, considerably antedating the well known Peiligang culture. Here we describe six exquisitely made c...

journal_title：Nature

authors： Zhang J,Harbottle G,Wang C,Kong Z

更新日期：1999-09-23 00:00:00

abstract：:That animals and humans can accomplish the same goal using different effectors and different goals using the same effectors attests to the remarkable flexibility of the central nervous system. This phenomenon has been termed 'motor equivalence', an example being the writing of a name with a pencil held between the toe...

journal_title：Nature

authors： Kelso JA,Fuchs A,Lancaster R,Holroyd T,Cheyne D,Weinberg H

更新日期：1998-04-23 00:00:00

abstract：:The spectral purity of an oscillator is central to many applications, such as detecting gravity waves, defining the second, ground-state cooling and quantum manipulation of nanomechanical objects, and quantum computation. Recent proposals suggest that laser oscillators which use very narrow optical transitions in atom...

journal_title：Nature

authors： Bohnet JG,Chen Z,Weiner JM,Meiser D,Holland MJ,Thompson JK

更新日期：2012-04-04 00:00:00

abstract：:A fascinating question in biology is how molecular changes in developmental pathways lead to macroevolutionary changes in morphology. Mutations in homeotic (Hox) genes have long been suggested as potential causes of morphological evolution, and there is abundant evidence that some changes in Hox expression patterns co...

journal_title：Nature

authors： Ronshaugen M,McGinnis N,McGinnis W

更新日期：2002-02-21 00:00:00

abstract：:We have shown previously that chemically skinned fibre bundles from scallop muscle can be desensitized to the action of calcium by the removal of the regulatory light chains of myosin and that sensitivity can be restored by the re-addition of scallop light chains. We have now confirmed these results and extended our o...

journal_title：Nature

authors： Simmons RM,Szent-Györgyi AG

更新日期：1980-08-07 00:00:00

abstract：:Gigantopithecus blacki was a giant hominid that inhabited densely forested environments of Southeast Asia during the Pleistocene epoch1. Its evolutionary relationships to other great ape species, and the divergence of these species during the Middle and Late Miocene epoch (16-5.3 million years ago), remain unclear2,3....

journal_title：Nature

authors： Welker F,Ramos-Madrigal J,Kuhlwilm M,Liao W,Gutenbrunner P,de Manuel M,Samodova D,Mackie M,Allentoft ME,Bacon AM,Collins MJ,Cox J,Lalueza-Fox C,Olsen JV,Demeter F,Wang W,Marques-Bonet T,Cappellini E

更新日期：2019-12-01 00:00:00

abstract：:Grid cells in the entorhinal cortex of freely moving rats provide a strikingly periodic representation of self-location which is indicative of very specific computational mechanisms. However, the existence of grid cells in humans and their distribution throughout the brain are unknown. Here we show that the preferred ...

journal_title：Nature

authors： Doeller CF,Barry C,Burgess N

更新日期：2010-02-04 00:00:00

abstract：:The recent discovery of CD4(+) T cells characterized by secretion of interleukin (IL)-17 (T(H)17 cells) and the naturally occurring regulatory FOXP3(+) CD4 T cell (nT(reg)) has had a major impact on our understanding of immune processes not readily explained by the T(H)1/T(H)2 paradigm. T(H)17 and nT(reg) cells have b...

journal_title：Nature

authors： Yang L,Anderson DE,Baecher-Allan C,Hastings WD,Bettelli E,Oukka M,Kuchroo VK,Hafler DA

更新日期：2008-07-17 00:00:00

abstract：:Rapid warming over the past 50 years on the Antarctic Peninsula is associated with the collapse of a number of ice shelves and accelerating glacier mass loss. In contrast, warming has been comparatively modest over West Antarctica and significant changes have not been observed over most of East Antarctica, suggesting ...

journal_title：Nature

authors： Mulvaney R,Abram NJ,Hindmarsh RC,Arrowsmith C,Fleet L,Triest J,Sime LC,Alemany O,Foord S

更新日期：2012-09-06 00:00:00

abstract：:The Pax-6 transcription-factor gene, containing a paired domain and a paired-type homeodomain, is conserved in structure and ubiquitously present among Metazoa. It is required for development of the central nervous system, and is mutated in human aniridia, mouse and rat small eye and Drosophila eyeless. We identified ...

journal_title：Nature

authors： Zhang Y,Emmons SW

更新日期：1995-09-07 00:00:00

abstract：:The interneuronal messenger nitric oxide (NO) may play a central role in the processing of olfactory information. Several circuit elements in the mammalian olfactory bulb contain NO synthase or its functional equivalent, NADPH diaphorase. The effects of NO on cellular excitability or circuit dynamics in the olfactory ...

journal_title：Nature

authors： Gelperin A

更新日期：1994-05-05 00:00:00

abstract：:In vitro reconstitution of active ribulose bisphosphate carboxylase (Rubisco) from unfolded polypeptides is facilitated by the molecular chaperones: chaperonin-60 from Escherichia coli (groEL), yeast mitochondria (hsp60) or chloroplasts (Rubisco sub-unit-binding protein), together with chaperonin-10 from E. coli (groE...

journal_title：Nature

authors： Goloubinoff P,Christeller JT,Gatenby AA,Lorimer GH

更新日期：1989-12-21 00:00:00

abstract：:In magnetic memory devices, logical bits are recorded by selectively setting the magnetization vector of individual magnetic domains either 'up' or 'down'. In such devices, the fastest and most efficient recording method involves precessional switching: when a magnetic field B(p) is applied as a write pulse over a per...

journal_title：Nature

authors： Tudosa I,Stamm C,Kashuba AB,King F,Siegmann HC,Stöhr J,Ju G,Lu B,Weller D

更新日期：2004-04-22 00:00:00

abstract：:Most tetrapods have retained terrestrial locomotion since it evolved in the Palaeozoic era, but bats have become so specialized for flight that they have almost lost the ability to manoeuvre on land at all. Vampire bats, which sneak up on their prey along the ground, are an important exception. Here we show that commo...

journal_title：Nature

authors： Riskin DK,Hermanson JW

更新日期：2005-03-17 00:00:00

abstract：:Acetylcholine and dopamine are key neurotransmitters in the extrapyramidal motor system, where they are thought to lie in a 'functional balance' brought about by interactions between the terminals of the dopamine-containing nigrostriatal tract and the cholinergic interneurones of the striatum. The precise nature of th...

journal_title：Nature

authors： Graybiel AM,Baughman RW,Eckenstein F

更新日期：1986-10-16 00:00:00

abstract：:Zygotic genome activation in metazoans typically occurs several hours to a day after fertilization, and thus maternal RNAs and proteins drive early animal embryo development. In plants, despite several molecular studies of post-fertilization transcriptional activation, the timing of zygotic genome activation remains a...

journal_title：Nature

authors： Del Toro-De León G,García-Aguilar M,Gillmor CS

更新日期：2014-10-30 00:00:00

abstract：:The neural crest, a source of many different cell types in vertebrate embryos, has not been identified in other chordates. Current opinion therefore holds that neural crest cells were a vertebrate innovation. Here we describe a migratory cell population resembling neural crest cells in the ascidian urochordate Ecteina...

journal_title：Nature

authors： Jeffery WR,Strickler AG,Yamamoto Y

更新日期：2004-10-07 00:00:00

abstract：:The signature of Dansgaard-Oeschger events--millennial-scale abrupt climate oscillations during the last glacial period--is well established in ice cores and marine records. But the effects of such events in continental settings are not as clear, and their absolute chronology is uncertain beyond the limit of (14)C dat...

journal_title：Nature

authors： Genty D,Blamart D,Ouahdi R,Gilmour M,Baker A,Jouzel J,Van-Exter S

更新日期：2003-02-20 00:00:00