Do genealogical patterns in purple photosynthetic bacteria reflect interspecific gene transfer?

abstract：:In 2001 the Intergovernmental Panel on Climate Change projected the contribution to sea level rise from the Greenland ice sheet to be between -0.02 and +0.09 m from 1990 to 2100 (ref. 1). However, recent work has suggested that the ice sheet responds more quickly to climate perturbations than previously thought, parti...

journal_title：Nature

authors： Velicogna I,Wahr J

更新日期：2006-09-21 00:00:00

abstract：:The presence of noise in a signal transduction system usually interferes with its ability to transfer information reliably. But many nonlinear systems can use noise to enhance performance, and this phenomenon, called stochastic resonance, may underlie the extraordinary ability of some biological systems to detect and ...

journal_title：Nature

authors： Bezrukov SM,Vodyanoy I

更新日期：1995-11-23 00:00:00

abstract：:The transcriptional underpinnings of brain development remain poorly understood, particularly in humans and closely related non-human primates. We describe a high-resolution transcriptional atlas of rhesus monkey (Macaca mulatta) brain development that combines dense temporal sampling of prenatal and postnatal periods...

journal_title：Nature

authors： Bakken TE,Miller JA,Ding SL,Sunkin SM,Smith KA,Ng L,Szafer A,Dalley RA,Royall JJ,Lemon T,Shapouri S,Aiona K,Arnold J,Bennett JL,Bertagnolli D,Bickley K,Boe A,Brouner K,Butler S,Byrnes E,Caldejon S,Carey A,Cate

更新日期：2016-07-21 00:00:00

abstract：:Abscisic acid (ABA) is a vital phytohormone that regulates mainly stomatal aperture and seed development, but ABA receptors involved in these processes have yet to be determined. We previously identified from broad bean an ABA-binding protein (ABAR) potentially involved in stomatal signalling, the gene for which encod...

journal_title：Nature

authors： Shen YY,Wang XF,Wu FQ,Du SY,Cao Z,Shang Y,Wang XL,Peng CC,Yu XC,Zhu SY,Fan RC,Xu YH,Zhang DP

更新日期：2006-10-19 00:00:00

abstract：:The subsidence history of the Bahamian Platform points to a non-uniform rate of sea-floor spreading since the beginning of the Cretaceous. Lower Cretaceous rates of perhaps 5 cm/yr led to an active trench system at the boundary between the American and Caribbean lithosphere plates, and the rapid subsidence of the cont...

journal_title：Nature

authors： Lynts GW

更新日期：1970-03-28 00:00:00

abstract：:MicroRNAs (miRNAs) are endogenous approximately 22-nucleotide RNAs that mediate important gene-regulatory events by pairing to the mRNAs of protein-coding genes to direct their repression. Repression of these regulatory targets leads to decreased translational efficiency and/or decreased mRNA levels, but the relative ...

journal_title：Nature

authors： Guo H,Ingolia NT,Weissman JS,Bartel DP

更新日期：2010-08-12 00:00:00

abstract：:The three-dimensional structure of the 66-amino acid cro repressor protein of bacteriophage lambda suggests how it binds to its operator DNA. We propose that a dimer of cro protein is bound to the B-form of DNA with the 2-fold axis of the dimer coincident with the 2-fold axis of DNA. A pair of 2-fold-related alpha-hel...

journal_title：Nature

authors： Anderson WF,Ohlendorf DH,Takeda Y,Matthews BW

更新日期：1981-04-30 00:00:00

abstract：:The functional assay of a eukaryotic mRNA, into which additional AUG codons have been introduced by in vitro mutagenesis, shows that a translational initiation site need not necessarily be the nearest AUG codon to the 5' end of a mRNA. Hence, the sequence surrounding the AUG, and not simply its position relative to th...

journal_title：Nature

authors： Lomedico PT,McAndrew SJ

更新日期：1982-09-16 00:00:00

abstract：:Nutrients, such as amino acids and glucose, signal through the Rag GTPases to activate mTORC1. The GATOR1 protein complex-comprising DEPDC5, NPRL2 and NPRL3-regulates the Rag GTPases as a GTPase-activating protein (GAP) for RAGA; loss of GATOR1 desensitizes mTORC1 signalling to nutrient starvation. GATOR1 components h...

journal_title：Nature

authors： Shen K,Huang RK,Brignole EJ,Condon KJ,Valenstein ML,Chantranupong L,Bomaliyamu A,Choe A,Hong C,Yu Z,Sabatini DM

更新日期：2018-04-05 00:00:00

abstract：:The genetic relationships of human populations have been studied by comparing gene frequency data for protein and blood-group loci of different populations. DNA analysis now promises to be more informative since not only do the DNA coding sequences have more variation than their corresponding proteins but, in addition...

journal_title：Nature

authors： Wainscoat JS,Hill AV,Boyce AL,Flint J,Hernandez M,Thein SL,Old JM,Lynch JR,Falusi AG,Weatherall DJ

更新日期：1986-02-06 00:00:00

abstract：:Enveloped viruses have evolved complex glycoprotein machinery that drives the fusion of viral and cellular membranes, permitting entry of the viral genome into the cell. For the paramyxoviruses, the fusion (F) protein catalyses this membrane merger and entry step, and it has been postulated that the F protein undergoe...

journal_title：Nature

authors： Yin HS,Wen X,Paterson RG,Lamb RA,Jardetzky TS

更新日期：2006-01-05 00:00:00

abstract：:Strong interactions between electrons in a solid material can lead to surprising properties. A prime example is the Mott insulator, in which suppression of conductivity occurs as a result of interactions rather than a filled Bloch band. Proximity to the Mott insulating phase in fermionic systems is the origin of many ...

journal_title：Nature

authors： Jördens R,Strohmaier N,Günter K,Moritz H,Esslinger T

更新日期：2008-09-11 00:00:00

abstract：:L-glutamate, the neurotransmitter of the majority of excitatory synapses in the brain, acts on three classes of ionotropic receptors: NMDA (N-methyl-D-aspartate), AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid) and kainate receptors. Little is known about the physiological role of kainate receptors be...

journal_title：Nature

authors： Mulle C,Sailer A,Pérez-Otaño I,Dickinson-Anson H,Castillo PE,Bureau I,Maron C,Gage FH,Mann JR,Bettler B,Heinemann SF

更新日期：1998-04-09 00:00:00

abstract：:The structure of the operator-binding domain of the lambda repressor has been determined at 3.2 A resolution. This domain contains an extended N-terminal arm and five alpha-helices. Model-building studies of the repressor-operator complex suggest that alpha-helices, especially the N-terminal parts of these helices, ma...

journal_title：Nature

authors： Pabo CO,Lewis M

更新日期：1982-07-29 00:00:00

abstract：:The coupling of ATP hydrolysis to electron transfer by the enzyme nitrogenase during biological nitrogen fixation is an important example of a nucleotide-dependent transduction mechanism. The crystal structure has been determined for the complex between the Fe-protein and MoFe-protein components of nitrogenase stabili...

journal_title：Nature

authors： Schindelin H,Kisker C,Schlessman JL,Howard JB,Rees DC

更新日期：1997-05-22 00:00:00

abstract：:The medial entorhinal cortex (MEC) is part of the brain's circuit for dynamic representation of self-location. The metric of this representation is provided by grid cells, cells with spatial firing fields that tile environments in a periodic hexagonal pattern. Limited anatomical sampling has obscured whether the grid ...

journal_title：Nature

authors： Stensola H,Stensola T,Solstad T,Frøland K,Moser MB,Moser EI

更新日期：2012-12-06 00:00:00

abstract：:Although male parental care is rare among mammals, adult males of many cercopithecine primate species provide care for infants and juveniles. This care is often in the form of grooming, carrying, support in agonistic interactions, and protection against infanticide. For these behaviours to be interpreted as true paren...

journal_title：Nature

authors： Buchan JC,Alberts SC,Silk JB,Altmann J

更新日期：2003-09-11 00:00:00

abstract：:Although the sex-determining gene Sry has been identified in mammals, no comparable genes have been found in non-mammalian vertebrates. Here, we used recombinant breakpoint analysis to restrict the sex-determining region in medaka fish (Oryzias latipes) to a 530-kilobase (kb) stretch of the Y chromosome. Deletion anal...

journal_title：Nature

authors： Matsuda M,Nagahama Y,Shinomiya A,Sato T,Matsuda C,Kobayashi T,Morrey CE,Shibata N,Asakawa S,Shimizu N,Hori H,Hamaguchi S,Sakaizumi M

更新日期：2002-05-30 00:00:00

abstract：:Plants encounter a myriad of microorganisms, particularly at the root-soil interface, that can invade with detrimental or beneficial outcomes. Prevalent beneficial associations between plants and microorganisms include those that promote plant growth by facilitating the acquisition of limiting nutrients such as nitrog...

journal_title：Nature

authors： Zipfel C,Oldroyd GE

更新日期：2017-03-15 00:00:00

abstract：:A non-discriminatory base analogue, or universal base, would be an invaluable component of oligonucleotide probes and primers for solving the design problems that arise as a result of the degeneracy of the genetic code, or when only fragmentary peptide sequence data are available. We have designed an alternative to pr...

journal_title：Nature

authors： Nichols R,Andrews PC,Zhang P,Bergstrom DE

更新日期：1994-06-09 00:00:00

abstract：:Group I and II introns are mobile elements that propagate by insertion into different genes. Some introns of both types self-splice in vitro by transesterification reactions catalysed by the intron RNA. These transesterifications are reversible, and it has been suggested that reverse splicing followed by reverse trans...

journal_title：Nature

authors： Mohr G,Lambowitz AM

更新日期：1991-11-14 00:00:00

abstract：:Crustal faults have long been identified as sites where localized sliding motion occurs during earthquakes, which allows for the relative motion between adjacent crustal blocks. Although there is a growing awareness that we must understand the evolution of fault systems on many timescales to relate present-day crustal...

journal_title：Nature

authors： Vidale JE,Li YG

更新日期：2003-01-30 00:00:00

abstract：:Since the discovery of insulin nearly 70 years ago, there has been no problem more fundamental to diabetes research than understanding how insulin works at the cellular level. Insulin binds to the alpha subunit of the insulin receptor which activates the tyrosine kinase in the beta subunit, but the molecular events li...

journal_title：Nature

authors： Sun XJ,Rothenberg P,Kahn CR,Backer JM,Araki E,Wilden PA,Cahill DA,Goldstein BJ,White MF

更新日期：1991-07-04 00:00:00

abstract：:The separation of cells into populations that do not intermix, termed compartments, is a fundamental organizing principle during development. Dorsal-ventral compartmentalization of the Drosophila wing is regulated downstream of the apterous (ap) gene, which encodes a transcription factor that specifies dorsal wing fat...

journal_title：Nature

authors： Rauskolb C,Correia T,Irvine KD

更新日期：1999-09-30 00:00:00

abstract：:The development of immunologic interventions that can target the viral reservoir in HIV-1-infected individuals is a major goal of HIV-1 research. However, little evidence exists that the viral reservoir can be sufficiently targeted to improve virologic control following discontinuation of antiretroviral therapy. Here ...

journal_title：Nature

authors： Borducchi EN,Cabral C,Stephenson KE,Liu J,Abbink P,Ng'ang'a D,Nkolola JP,Brinkman AL,Peter L,Lee BC,Jimenez J,Jetton D,Mondesir J,Mojta S,Chandrashekar A,Molloy K,Alter G,Gerold JM,Hill AL,Lewis MG,Pau MG,Schuit

更新日期：2016-12-08 00:00:00

abstract：:Japan's Ministry of Health will fund a major new heart transplantation project in an effort to resume heart transplants halted by a public outcry against the first such transplant 17 years ago. Opposition to organ donation, which has been attributed variously to Buddhist and Confucian views of the body and to Japanes...

journal_title：Nature

authors： Anderson A

更新日期：1985-01-31 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：:Generation of a diverse and self-tolerant T-cell repertoire requires appropriate interpretation of T-cell antigen receptor (TCR) signals by CD4(+ ) CD8(+) double-positive thymocytes. Thymocyte cell fate is dictated by the nature of TCR-major-histocompatibility-complex (MHC)-peptide interactions, with signals of higher...

journal_title：Nature

authors： Staton TL,Lazarevic V,Jones DC,Lanser AJ,Takagi T,Ishii S,Glimcher LH

更新日期：2011-04-07 00:00:00

abstract：:Language is a uniquely human ability that evolved at some point in the roughly 6,000,000 years since human and chimpanzee lines diverged. Even in the most linguistically impoverished environments, children naturally develop sophisticated language systems. In contrast, reading is a learnt skill that does not develop wi...

journal_title：Nature

authors： Carreiras M,Seghier ML,Baquero S,Estévez A,Lozano A,Devlin JT,Price CJ

更新日期：2009-10-15 00:00:00

abstract：:Reported widespread declines of wild and managed insect pollinators have serious consequences for global ecosystem services and agricultural production. Bees contribute approximately 80% of insect pollination, so it is important to understand and mitigate the causes of current declines in bee populations . Recent stud...

journal_title：Nature

authors： Gill RJ,Ramos-Rodriguez O,Raine NE

更新日期：2012-11-01 00:00:00