Backtracking determines the force sensitivity of RNAP II in a factor-dependent manner.

abstract：:The massive health problem associated with cigarette smoking is exacerbated by the addictive properties of tobacco smoke and the limited success of current approaches to cessation of smoking. Yet little is known about the neuropharmacological actions of cigarette smoke that contribute to smoking behaviour, or why smok...

journal_title：Nature

authors： Fowler JS,Volkow ND,Wang GJ,Pappas N,Logan J,MacGregor R,Alexoff D,Shea C,Schlyer D,Wolf AP,Warner D,Zezulkova I,Cilento R

更新日期：1996-02-22 00:00:00

abstract：:The beta, gamma-crystallins form a class of homologous proteins in the eye lens. Each gamma-crystallin comprises four topologically equivalent, Greek key motifs; pairs of motifs are organized around a local dyad to give domains and two similar domains are in turn related by a further local dyad. Sequence comparisons a...

journal_title：Nature

authors： Bax B,Lapatto R,Nalini V,Driessen H,Lindley PF,Mahadevan D,Blundell TL,Slingsby C

更新日期：1990-10-25 00:00:00

abstract：:In this Letter, the statement 'I.I. and A.B. performed computations at the NCI Australia' was missing from the Acknowledgements section. This has been corrected online. ...

journal_title：Nature

authors： Sainadh US,Xu H,Wang X,Atia-Tul-Noor A,Wallace WC,Douguet N,Bray A,Ivanov I,Bartschat K,Kheifets A,Sang RT,Litvinyuk IV

更新日期：2019-05-01 00:00:00

abstract：:H-2 class I antigens appear to direct the recognition of virus-infected and neoplastic transformed cells by cytotoxic T lymphocytes (CTLs). Here, to identify the regions of class I antigens involved in CTL recognition, four hybrid class I genes were constructed in which exons were exchanged between the H-2Kb and H-2Db...

journal_title：Nature

authors： Allen H,Wraith D,Pala P,Askonas B,Flavell RA

更新日期：1984-05-17 00:00:00

abstract：:The neurotrophin receptor TrkB is essential for normal function of the mammalian brain. It is expressed in three splice variants. Full-length receptors (TrkB(FL)) possess an intracellular tyrosine kinase domain and are considered as those TrkB receptors that mediate the crucial effects of brain-derived neurotrophic fa...

journal_title：Nature

authors： Rose CR,Blum R,Pichler B,Lepier A,Kafitz KW,Konnerth A

更新日期：2003-11-06 00:00:00

abstract：:Down's syndrome (DS) or trisomy 21 is the most common genetic cause of mental retardation. Development of the DS brain is associated with decreased neuronal number and abnormal neuronal differentiation, and adults with DS develop Alzheimer's disease. The cause of the neurodegenerative process in DS is unknown. Here we...

journal_title：Nature

authors： Busciglio J,Yankner BA

更新日期：1995-12-21 00:00:00

abstract：:Depleted uranium is a mildly radioactive waste product that is stockpiled worldwide. The chemical reactivity of uranium complexes is well documented, including the stoichiometric activation of small molecules of biological and industrial interest such as H2O, CO2, CO, or N2 (refs 1 - 11), but catalytic transformations...

journal_title：Nature

authors： Halter DP,Heinemann FW,Bachmann J,Meyer K

更新日期：2016-02-18 00:00:00

abstract：:Low-resolution intensity spectra of Earth's atmosphere obtained from space reveal strong signatures of life ('biosignatures'), such as molecular oxygen and methane with abundances far from chemical equilibrium, as well as the presence of a 'red edge' (a sharp increase of albedo for wavelengths longer than 700 nm) caus...

journal_title：Nature

authors： Sterzik MF,Bagnulo S,Palle E

更新日期：2012-02-29 00:00:00

abstract：:Nitrogen is an essential nutrient for all organisms that must have been available since the origin of life. Abiotic processes including hydrothermal reduction, photochemical reactions, or lightning discharge could have converted atmospheric N2 into assimilable NH4(+), HCN, or NOx species, collectively termed fixed nit...

journal_title：Nature

authors： Stüeken EE,Buick R,Guy BM,Koehler MC

更新日期：2015-04-30 00:00:00

abstract：:The use of chemotherapy to suppress replication of the human immunodeficiency virus (HIV) has transformed the face of AIDS in the developed world. Pronounced reductions in illness and death have been achieved and healthcare utilization has diminished. HIV therapy has also provided many new insights into the pathogenes...

journal_title：Nature

authors： Richman DD

更新日期：2001-04-19 00:00:00

abstract：:Excision of introns from nuclear precursors to messenger RNAs (pre-mRNAs) by the spliceosome requires two distinct phosphodiester transfer (transesterification) reactions: exchange of a 3'-5' for a 2'-5' bond in the first step (lariat formation) and exchange of one 3'-5' phosphodiester for another in the second step (...

journal_title：Nature

authors： Moore MJ,Sharp PA

更新日期：1993-09-23 00:00:00

abstract：:In Drosophila, Decapentaplegic (Dpp) and Wingless (Wg) are two secreted signalling proteins of the transforming growth factor (TGF)-beta and Wnt families, respectively. Although both are often required during development, only a few downstream components of these signalling pathways have been described. Here we presen...

journal_title：Nature

authors： Mann RS,Abu-Shaar M

更新日期：1996-10-17 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：:It has long been contentious whether the large representation of the fovea in the primate visual cortex (V1) indicates a selective magnification of this part of the retina, or whether it merely reflects the density of retinal ganglion cells. The measurement of the retinal ganglion-cell density is complicated by latera...

journal_title：Nature

authors： Wässle H,Grünert U,Röhrenbeck J,Boycott BB

更新日期：1989-10-19 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： Segel M,Neumann B,Hill MFE,Weber IP,Viscomi C,Zhao C,Young A,Agley CC,Thompson AJ,Gonzalez GA,Sharma A,Holmqvist S,Rowitch DH,Franze K,Franklin RJM,Chalut KJ

更新日期：2019-09-01 00:00:00

abstract：:Polar molecules have a rich internal structure and long-range dipole-dipole interactions, making them useful for quantum-controlled applications and fundamental investigations. Their potential fully unfolds at ultracold temperatures, where various effects are predicted in many-body physics, quantum information science...

journal_title：Nature

authors： Zeppenfeld M,Englert BG,Glöckner R,Prehn A,Mielenz M,Sommer C,van Buuren LD,Motsch M,Rempe G

更新日期：2012-11-22 00:00:00

abstract：:The Coffin-Lowry syndrome (CLS), an X-linked disorder, is characterized by severe psychomotor retardation, facial and digital dysmorphisms, and progressive skeletal deformations. Genetic linkage analysis mapped the CLS locus to an interval of 2-3 megabases at Xp22.2. The gene coding for Rsk-2, a member of the growth-f...

journal_title：Nature

authors： Trivier E,De Cesare D,Jacquot S,Pannetier S,Zackai E,Young I,Mandel JL,Sassone-Corsi P,Hanauer A

更新日期：1996-12-12 00:00:00

abstract：:It is currently debated whether segmentation in different animal phyla has a common origin and shares a common genetic mechanism. The apparent use of different genetic networks in arthropods and vertebrates has become a strong argument against a common origin of segmentation. Our knowledge of arthropod segmentation is...

journal_title：Nature

authors： Stollewerk A,Schoppmeier M,Damen WG

更新日期：2003-06-19 00:00:00

abstract：:To artists, the face is a mirror of the soul. To biologists, the face reflects remarkable structural diversity--think of bulldogs and wolfhounds or galapagos finches. How do such variations in skeletal form arise? Do the same mechanisms control skeletogenesis elsewhere in the body? The answers lie in the molecular mac...

journal_title：Nature

authors： Helms JA,Schneider RA

更新日期：2003-05-15 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：:Arachidonic acid is released by phospholipase A2 when activation of N-methyl-D-aspartate (NMDA) receptors by neurotransmitter glutamate raises the calcium concentration in neurons, for example during the initiation of long-term potentiation and during brain anoxia. Here we investigate the effect of arachidonic acid on...

journal_title：Nature

authors： Miller B,Sarantis M,Traynelis SF,Attwell D

更新日期：1992-02-20 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：:The HLA-D region of the human major histocompatibility complex (MHC) has been shown to be homologous to the murine I region in terms of both structure and function. Both regions encode class II MHC molecules which restrict T-lymphocyte interactions with antigen-presenting cells. We have recently described the MHC rest...

journal_title：Nature

authors： Eckels DD,Lake P,Lamb JR,Johnson AH,Shaw S,Woody JN,Hartzman RJ

更新日期：1983-02-24 00:00:00

abstract：:The restriction of intermingling between specific cell populations is crucial for the maintenance of organized patterns during development. A striking example is the restriction of cell mixing between segments in the insect epidermis and the vertebrate hindbrain that may enable each segment to maintain a distinct iden...

journal_title：Nature

authors： Xu Q,Mellitzer G,Robinson V,Wilkinson DG

更新日期：1999-05-20 00:00:00

abstract：:Since the early 1980s, most electronics have relied on the use of complementary metal-oxide-semiconductor (CMOS) transistors. However, the principles of CMOS operation, involving a switchable semiconductor conductance controlled by an insulating gate, have remained largely unchanged, even as transistors are miniaturiz...

journal_title：Nature

authors： Manipatruni S,Nikonov DE,Lin CC,Gosavi TA,Liu H,Prasad B,Huang YL,Bonturim E,Ramesh R,Young IA

更新日期：2019-01-01 00:00:00

abstract：:Dense plexuses of neurones containing immunoreactive vasoactive intestinal peptide (VIP) have been found in discrete areas of the central nervous system and in peripheral organs, including the gastrointestinal tract, pancreas and urogenital system. In many of these locations VIP is concentrated in nerve endings, where...

journal_title：Nature

authors： Giachetti A,Said SI

更新日期：1979-10-18 00:00:00

abstract：:To understand the molecular basis of microtubule-associated motility during mitosis, the mechanochemical factors that generate the relevant motile force must be identified. Myosin, the ATPase that interacts with actin to produce the force for muscle contraction and other forms of cell motility, is believed to be invol...

journal_title：Nature

authors： Scholey JM,Porter ME,Grissom PM,McIntosh JR

更新日期：1985-12-05 00:00:00

abstract：:The existence of so great a diversity of species on Earth remains a mystery, the solution to which may also explain why and how biodiversity influences the functioning of ecosystems. The answer may lie in quantifying the trade-offs that organisms face in dealing with the constraints of their environment. Societal resp...

journal_title：Nature

authors： Tilman D

更新日期：2000-05-11 00:00:00

abstract：:The variable (V) regions of heavy and light immunoglobulin chains are encoded by multiple germline DNA elements which are assembled into complete variable-region genes in precursor(pre-) B lymphocytes. The heavy-chain V region (VH) is assembled from three separate germline DNA elements, the variable (VH), diversity (D...

journal_title：Nature

authors： Reth MG,Ammirati P,Jackson S,Alt FW

更新日期：1985-09-26 00:00:00

abstract：:Cellular ras genes encode a family of membrane-associated proteins (p21ras) that bind guanine nucleotide and possess a low intrinsic GTPase activity. The p21ras proteins are ubiquitously expressed in mammalian cells and are thought to be involved in a growth-promoting signal transduction pathway; their mode of action,...

journal_title：Nature

authors： Graziadei L,Riabowol K,Bar-Sagi D

更新日期：1990-09-27 00:00:00