Age-specific selection.

abstract：:The larger structures are, the lower their mechanical strength. Already discussed by Leonardo da Vinci and Edmé Mariotte several centuries ago, size effects on strength remain of crucial importance in modern engineering for the elaboration of safety regulations in structural design or the extrapolation of laboratory r...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Weiss J,Girard L,Gimbert F,Amitrano D,Vandembroucq D

更新日期：2014-04-29 00:00:00

abstract：:Isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP) represent the two central intermediates in the biosynthesis of isoprenoids. The recently discovered deoxyxylulose 5-phosphate pathway generates a mixture of IPP and DMAPP in its final step by reductive dehydroxylation of 1-hydroxy-2-methyl-2-butenyl 4...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gräwert T,Span I,Eisenreich W,Rohdich F,Eppinger J,Bacher A,Groll M

更新日期：2010-01-19 00:00:00

abstract：:RNA interfering is a eukaryote-specific gene silencing by 20∼23-nucleotide (nt) microRNAs and small interfering RNAs that recruit Argonaute proteins to complementary RNAs for degradation. In humans, Argonaute2 (AGO2) has been known as the only slicer while Argonaute3 (AGO3) barely cleaves RNAs. Therefore, the intrinsi...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Park MS,Sim G,Kehling AC,Nakanishi K

更新日期：2020-11-17 00:00:00

abstract：:Salmonella enterica serovar Typhi can colonize the gallbladder and persist in an asymptomatic carrier state that is frequently associated with the presence of gallstones. We have shown that salmonellae form bile-mediated biofilms on human gallstones and cholesterol-coated surfaces in vitro. Here, we test the hypothesi...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Crawford RW,Rosales-Reyes R,Ramírez-Aguilar Mde L,Chapa-Azuela O,Alpuche-Aranda C,Gunn JS

更新日期：2010-03-02 00:00:00

abstract：:The mammalian innate immune system uses several sensors of double-stranded RNA (dsRNA) to develop the interferon response. Among these sensors are dsRNA-activated oligoadenylate synthetases (OAS), which produce signaling 2',5'-linked RNA molecules (2-5A) that activate regulated RNA decay in mammalian tissues. Differen...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Donovan J,Whitney G,Rath S,Korennykh A

更新日期：2015-03-31 00:00:00

abstract：:The torI gene has been identified by using a genetic multicopy approach as a negative regulator of the torCAD operon that encodes the trimethylamine N-oxide reductase respiratory system in Escherichia coli. The negative effect was due to a previously unidentified small ORF (66 aa) of phage origin that we called torI f...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Ansaldi M,Théraulaz L,Méjean V

更新日期：2004-06-22 00:00:00

abstract：:Adenylate cyclase [ATP pyrophosphate-lyase (cyclizing), EC 4.6.1.1] activity of purified secretory vesicle membranes from the adrenal medulla is inhibited by I-isoproterenol and I-epinephrine, as well as by nerve growth factor (NGF). The effect of these agents was found to be dose-dependent and, in the case of the cat...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Nikodijevic O,Nikodijevic B,Zinder O,Yu MY,Guroff G,Pollard HB

更新日期：1976-03-01 00:00:00

abstract：:Biological diversity reflects an underlying molecular diversity. The molecules found in nature may be regarded as solutions to challenges that have been confronted and overcome during molecular evolution. As our understanding of these solutions deepens, the efficiency with which we can discover and/or design new treat...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Caporale LH

更新日期：1995-01-03 00:00:00

abstract：:We show that the motion of a slightly compressible fluid is near that of an incompressible fluid. That is, for a given initial velocity field, the motion of a compressible fluid with large sound speed is near to that of an idealized incompressible fluid. We consider the compressible fluid motion in Lagrangian coordina...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Ebin DG

更新日期：1975-02-01 00:00:00

abstract：:A simple protocol for the rescue of a synthetic genome into a paramyxovirus has been developed. First, a synthetic Sendai virus-like RNA, containing the antisense coding region of the chloramphenicol acetyltransferase gene replacing the coding region of the Sendai virus genome, was transcribed from a cDNA. When introd...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Park KH,Huang T,Correia FF,Krystal M

更新日期：1991-07-01 00:00:00

abstract：:PSD-95 is a scaffolding protein that regulates the synaptic localization of many receptors, channels, and signaling proteins. The NLGN gene family encodes single-pass transmembrane postsynaptic cell adhesion molecules that are important for synapse assembly and function. At excitatory synapses, NLGN1 mediates transsyn...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Jeong J,Pandey S,Li Y,Badger JD 2nd,Lu W,Roche KW

更新日期：2019-06-11 00:00:00

abstract：:The NMR structures of three single-amino acid variants of the C-terminal domain of the human prion protein, hPrP(121-230), are presented. In hPrP(M166V) and hPrP(R220K) the substitution is with the corresponding residue in murine PrP, and in hPrP(S170N) it is with the corresponding Syrian hamster residue. All three su...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Calzolai L,Lysek DA,Guntert P,von Schroetter C,Riek R,Zahn R,Wüthrich K

更新日期：2000-07-18 00:00:00

abstract：:Among yeasts that underwent whole-genome duplication (WGD), Kluyveromyces polysporus represents the lineage most distant from Saccharomyces cerevisiae. By sequencing the K. polysporus genome and comparing it with the S. cerevisiae genome using a likelihood model of gene loss, we show that these species diverged very s...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Scannell DR,Frank AC,Conant GC,Byrne KP,Woolfit M,Wolfe KH

更新日期：2007-05-15 00:00:00

abstract：:The rapid worldwide spread of severe acute respiratory syndrome demonstrated the potential threat an infectious disease poses in a closely interconnected and interdependent world. Here we introduce a probabilistic model that describes the worldwide spread of infectious diseases and demonstrate that a forecast of the g...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hufnagel L,Brockmann D,Geisel T

更新日期：2004-10-19 00:00:00

abstract：:Most paleo-episodes of ocean acidification (OA) were either too slow or too small to be instructive in predicting near-future impacts. The end-Cretaceous event (66 Mya) is intriguing in this regard, both because of its rapid onset and also because many pelagic calcifying species (including 100% of ammonites and more t...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Tyrrell T,Merico A,Armstrong McKay DI

更新日期：2015-05-26 00:00:00

abstract：:Chronic microbial infections are associated with fibrotic and inflammatory reactions known as granulomas showing similarities to wound-healing and tissue repair processes. We have previously mapped three leishmaniasis susceptibility loci, designated lmr1, -2, and -3, which exert their effect independently of T cell im...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Sakthianandeswaren A,Elso CM,Simpson K,Curtis JM,Kumar B,Speed TP,Handman E,Foote SJ

更新日期：2005-10-25 00:00:00

abstract：:We have isolated several lines of rat embryo cells transformed by simian virus 40. All these lines are fully transformed with regard to saturation density and serum sensitivity, but they differ greatly in their anchorage dependence, as assayed by efficiency of plating in methyl cellulose suspension. This set of lines ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Pollack R,Risser R,Conlon S,Rifkin D

更新日期：1974-12-01 00:00:00

abstract：:Breast cancer remains the cancer with the highest mortality among women in the United States. Peptides derived from the oncogenic Tac1 gene (full transcript: betaPPT-A) stimulate the proliferation of breast cancer cells (BCCs) via seven-transmembrane G protein-coupled neurokinin 1 (NK1) and NK2 receptors. The NK1 gene...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Patel HJ,Ramkissoon SH,Patel PS,Rameshwar P

更新日期：2005-11-29 00:00:00

abstract：:How much free energy is irreversibly lost during a thermodynamic process? For deterministic protocols, lower bounds on energy dissipation arise from the thermodynamic friction associated with pushing a system out of equilibrium in finite time. Recent work has also bounded the cost of precisely moving a single degree o...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Bryant SJ,Machta BB

更新日期：2020-02-18 00:00:00

abstract：:Given the widely noted increase in the warming effects of rising greenhouse gas concentrations, it has been unclear why global surface temperatures did not rise between 1998 and 2008. We find that this hiatus in warming coincides with a period of little increase in the sum of anthropogenic and natural forcings. Declin...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Kaufmann RK,Kauppi H,Mann ML,Stock JH

更新日期：2011-07-19 00:00:00

abstract：:We present a model for transposition that allows a choice between cointegrate formation (replicon fusion) and direct transposition. We propose that initiation of the process occurs by invasion of the target DNA by a single-stranded end of the transposable element. This leads to nicking of one of the DNA strands of the...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Galas DJ,Chandler M

更新日期：1981-08-01 00:00:00

abstract：:Serotonin (5-HT) controls a wide range of biological functions. In the brain, its implication as a neurotransmitter and in the control of behavioral traits has been largely documented. At the periphery, its modulatory role in physiological processes, such as the cardiovascular function, is still poorly understood. The...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Côté F,Thévenot E,Fligny C,Fromes Y,Darmon M,Ripoche MA,Bayard E,Hanoun N,Saurini F,Lechat P,Dandolo L,Hamon M,Mallet J,Vodjdani G

更新日期：2003-11-11 00:00:00

abstract：:Over the past decade, seafood mislabeling has been increasingly documented, raising public concern over the identity, safety, and sustainability of seafood. Negative outcomes from seafood mislabeling are suspected to be substantial and pervasive as seafood is the world's most highly traded food commodity. Here we prov...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Kroetz K,Luque GM,Gephart JA,Jardine SL,Lee P,Chicojay Moore K,Cole C,Steinkruger A,Donlan CJ

更新日期：2020-12-01 00:00:00

abstract：:In a coupled system consisting of RNA polymerase and DNA polymerase I of Escherichia coli, the four deoxyribo- and the four ribonucleoside triphosphates, and DNA of bacteriophage f1 as template, DNA synthesis depends on the concomitant synthesis of RNA. Over a wide range of concentrations of the two polymerases, RNA s...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Karkas JD

更新日期：1972-08-01 00:00:00

abstract：:Receptor-type protein tyrosine phosphatase D (PTPRD) is a neuronal cell-adhesion molecule/synaptic specifier that has been implicated in addiction vulnerability and stimulant reward by human genomewide association and mouse cocaine-conditioned place-preference data. However, there have been no reports of effects of re...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Uhl GR,Martinez MJ,Paik P,Sulima A,Bi GH,Iyer MR,Gardner E,Rice KC,Xi ZX

更新日期：2018-11-06 00:00:00

abstract：:The distribution of wealth in the United States and countries around the world is highly skewed. How does visible economic inequality affect well-off individuals' support for redistribution? Using a placebo-controlled field experiment, I randomize the presence of poverty-stricken people in public spaces frequented by ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Sands ML

更新日期：2017-01-24 00:00:00

abstract：:Regulation of gene expression is usually separated into cis and trans components. The separation may become artificial if much of the variation in expression is under multigenic and epistatic (e.g., cis-by-trans) control. There is hence a need to quantify the relative contribution of cis, trans, and cis-by-trans effec...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Wang HY,Fu Y,McPeek MS,Lu X,Nuzhdin S,Xu A,Lu J,Wu ML,Wu CI

更新日期：2008-04-29 00:00:00

abstract：:We identified a viral IL-10 homolog encoded by an ORF (UL111a) within the human cytomegalovirus (CMV) genome, which we designated cmvIL-10. cmvIL-10 can bind to the human IL-10 receptor and can compete with human IL-10 for binding sites, despite the fact that these two proteins are only 27% identical. cmvIL-10 require...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Kotenko SV,Saccani S,Izotova LS,Mirochnitchenko OV,Pestka S

更新日期：2000-02-15 00:00:00

abstract：:Current theory indicates that mitochondria were obtained 1.5 billion years ago from an ancient prokaryote. The mitochondria provided the capacity for aerobic respiration, the creation of the eukaryotic cell, and eventually complex multicellular organisms. Recent reports have found that mitochondria play essential role...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Spees JL,Olson SD,Whitney MJ,Prockop DJ

更新日期：2006-01-31 00:00:00

abstract：:Apolipoprotein E (apoE), a plasma apolipoprotein that plays a central role in lipoprotein metabolism, is localized in the senile plaques, congophilic angiopathy, and neurofibrillary tangles of Alzheimer disease. Late-onset familial and sporadic Alzheimer disease patients have an increased frequency of one of the three...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Strittmatter WJ,Weisgraber KH,Huang DY,Dong LM,Salvesen GS,Pericak-Vance M,Schmechel D,Saunders AM,Goldgaber D,Roses AD

更新日期：1993-09-01 00:00:00