Quality control of assembly-defective U1 snRNAs by decapping and 5'-to-3' exonucleolytic digestion.

abstract：:Blot hybridization analysis that used labeled tubulin cDNA probes revealed that N6,O2'-dibutyryladenosine 3',5'-cyclic monophosphate [dibutyryl cyclic AMP (Bt2cAMP)] initially increases and later decreases the level of tubulin mRNA in a neuroblastoma-glioma hybrid cell line as well as in the parent cells. A significan...

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

authors： Ginzburg I,Rybak S,Kimhi Y,Littauer UZ

更新日期：1983-07-01 00:00:00

abstract：:Infections caused by drug-resistant bacteria are a major problem worldwide. Carbapenem-resistant Klebsiella pneumoniae, most notably isolates classified as multilocus sequence type (ST) 258, have emerged as an important cause of hospital deaths. ST258 isolates are predominantly multidrug resistant, and therefore infec...

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

authors： Deleo FR,Chen L,Porcella SF,Martens CA,Kobayashi SD,Porter AR,Chavda KD,Jacobs MR,Mathema B,Olsen RJ,Bonomo RA,Musser JM,Kreiswirth BN

更新日期：2014-04-01 00:00:00

abstract：:The sided effects of H+ on Ca2(+)-stimulated K+ transport (the Gardos channel) were studied in human red blood cells. Cells were loaded with Ca2+ during energy depletion with the internal pH adjusted to desired levels prior to treatment with the anion-exchange inhibitor 4,4'-diisothiocyanostilbene-2,2'-disulfonic acid...

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

authors： Heinz A,Hoffman JF

更新日期：1990-03-01 00:00:00

abstract：:The RNA synthesized in vitro by the virion-associated RNA-instructed RNA polymerase of purified vesicular stomatitis virus contains polyadenylate sequences. These have been demonstrated by their partial resistance to pancreatic and T(1) ribonucleases and their capacity to bind to poly(U) filters and oligo(dT)-cellulos...

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

authors： Banerjee AK,Rhodes DP

更新日期：1973-12-01 00:00:00

abstract：:The postdevelopmental basis of cellular identity and the unique cellular output of a particular neuron type are of particular interest in the nervous system because a detailed understanding of circuits responsible for complex processes in the brain is impeded by the often ambiguous classification of neurons in these c...

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

authors： Schulz DJ,Goaillard JM,Marder EE

更新日期：2007-08-07 00:00:00

abstract：:Candidate single-nucleotide polymorphisms (SNPs) were analyzed for associations to an unselected whole genome pool of tumor mRNA transcripts in 50 unrelated patients with breast cancer. SNPs were selected from 203 candidate genes of the reactive oxygen species pathway. We describe a general statistical framework for t...

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

authors： Kristensen VN,Edvardsen H,Tsalenko A,Nordgard SH,Sørlie T,Sharan R,Vailaya A,Ben-Dor A,Lønning PE,Lien S,Omholt S,Syvänen AC,Yakhini Z,Børresen-Dale AL

更新日期：2006-05-16 00:00:00

abstract：:The broad negative consequences of habitat degradation on biodiversity have been studied, but the complex effects of natural-agricultural landscape matrices remain poorly understood. Here we used stable carbon and nitrogen isotopes to detect changes in mammal resource and habitat use and trophic structure between pres...

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

authors： Magioli M,Moreira MZ,Fonseca RCB,Ribeiro MC,Rodrigues MG,Ferraz KMPMB

更新日期：2019-09-10 00:00:00

abstract：:The blue-light receptor genes (sopII) of sensory rhodopsin (SR) II were cloned from two species, the halophilic bacteria Haloarcula vallismortis (vSR-II) and Natronobacterium pharaonis (pSR-II). Upstream of both sopII gene loci, sequences corresponding to the halobacterial transducer of rhodopsin (Htr) II were recogni...

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

authors： Seidel R,Scharf B,Gautel M,Kleine K,Oesterhelt D,Engelhard M

更新日期：1995-03-28 00:00:00

abstract：:Among the pathogenic processes contributing to dopaminergic neuron (DN) death in Parkinson disease (PD), evidence points to non-cell-autonomous mechanisms, particularly chronic inflammation mounted by activated microglia. Yet little is known about endogenous regulatory processes that determine microglial actions in pa...

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

authors： Ros-Bernal F,Hunot S,Herrero MT,Parnadeau S,Corvol JC,Lu L,Alvarez-Fischer D,Carrillo-de Sauvage MA,Saurini F,Coussieu C,Kinugawa K,Prigent A,Höglinger G,Hamon M,Tronche F,Hirsch EC,Vyas S

更新日期：2011-04-19 00:00:00

abstract：:In Drosophila, multiple isoforms of alpha-glycerol-3-phosphate dehydrogenase (sn-glycerol-3-phosphate: NAD+ 2-oxidoreductase, EC 1.1.1.8) are produced in a tissue- and stage-specific manner. To understand the underlying molecular basis of these isoforms, we have sequenced a 5.8-kilobase region of the Drosophila genome...

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

authors： von Kalm L,Weaver J,DeMarco J,MacIntyre RJ,Sullivan DT

更新日期：1989-07-01 00:00:00

abstract：:Noncompliance with social distancing during the early stage of the coronavirus disease 2019 (COVID-19) pandemic poses a great challenge to the public health system. These noncompliance behaviors partly reflect people's concerns for the inherent costs of social distancing while discounting its public health benefits. W...

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

authors： Xie W,Campbell S,Zhang W

更新日期：2020-07-28 00:00:00

abstract：:Accumulation of (45)Ca(++) was found to occur in membrane vesicles of E. coli prepared by lysis with a French pressure cell. The uptake occurs by active transport, requiring an energy source. Substrates of the electron transport chain, including D-lactate, reduced phenazine methosulfate, and NADH, stimulated accumulat...

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

authors： Rosen BP,McClees JS

更新日期：1974-12-01 00:00:00

abstract：:The abelian sandpile is a cellular automaton which serves as the archetypical model to study self-organized criticality, a phenomenon occurring in various biological, physical, and social processes. Its recurrent configurations form an abelian group, whose identity is a fractal composed of self-similar patches. Here, ...

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

authors： Lang M,Shkolnikov M

更新日期：2019-02-19 00:00:00

abstract：:Parkinson's disease (PD) is a neurodegenerative disorder of uncertain pathogenesis characterized by a loss of substantia nigra pars compacta (SNpc) dopaminergic (DA) neurons, and can be modeled by the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). Both inflammatory processes and oxidative stress may c...

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

authors： Wu DC,Teismann P,Tieu K,Vila M,Jackson-Lewis V,Ischiropoulos H,Przedborski S

更新日期：2003-05-13 00:00:00

abstract：:Reducible compounds that participate in crosslinking were analyzed in hydroxylysine-deficient collagens of patients with a heritable disorder of connective tissue. After treatment with [(3)H]sodium borohydride, new compounds, as well as a totally different pattern of tritiated compounds, were found in hydroxylysine-de...

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

authors： Eyre DR,Glimcher MJ

更新日期：1972-09-01 00:00:00

abstract：:P-glycoprotein is an ATP-binding cassette multidrug transporter that actively transports chemically diverse substrates across the lipid bilayer. The precise molecular mechanism underlying transport is not fully understood. Here, we present crystal structures of a eukaryotic P-glycoprotein homolog, CmABCB1 from Cyanidi...

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

authors： Kodan A,Yamaguchi T,Nakatsu T,Sakiyama K,Hipolito CJ,Fujioka A,Hirokane R,Ikeguchi K,Watanabe B,Hiratake J,Kimura Y,Suga H,Ueda K,Kato H

更新日期：2014-03-18 00:00:00

abstract：:The overall structure of the transition-state and intermediate ensembles observed experimentally for dihydrofolate reductase and interleukin-1beta can be obtained by using simplified models that have almost no energetic frustration. The predictive power of these models suggests that, even for these very large proteins...

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

authors： Clementi C,Jennings PA,Onuchic JN

更新日期：2000-05-23 00:00:00

abstract：:The regulatory mechanisms that use signals of low levels of reactive oxygen species (ROS) could be obscured by ROS produced under stress and thus are better investigated under homeostatic conditions. Previous studies showed that the chloroplastic atypical thioredoxin ACHT1 is oxidized by 2-Cys peroxiredoxin (2-Cys Prx...

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

authors： Eliyahu E,Rog I,Inbal D,Danon A

更新日期：2015-10-13 00:00:00

abstract：:Huntington disease stems from a mutation of the protein huntingtin and is characterized by selective loss of discrete neuronal populations in the brain. Despite a massive loss of neurons in the corpus striatum, NO-generating neurons are intact. We recently identified a brain-specific protein that associates with hunti...

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

authors： Li XJ,Sharp AH,Li SH,Dawson TM,Snyder SH,Ross CA

更新日期：1996-05-14 00:00:00

abstract：:Imprinted gene expression associated with Prader-Willi syndrome (PWS) and Angelman syndrome (AS) is controlled by two imprinting centers (ICs), the PWS-IC and the AS-IC. The PWS-IC operates in cis to activate transcription of genes that are expressed exclusively from the paternal allele. We have created a conditional ...

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

authors： DuBose AJ,Smith EY,Johnstone KA,Resnick JL

更新日期：2012-02-28 00:00:00

abstract：:Aberrant transcription of the pericentromeric human satellite II (HSATII) repeat is present in a wide variety of epithelial cancers. In deriving experimental systems to study its deregulation, we observed that HSATII expression is induced in colon cancer cells cultured as xenografts or under nonadherent conditions in ...

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

authors： Bersani F,Lee E,Kharchenko PV,Xu AW,Liu M,Xega K,MacKenzie OC,Brannigan BW,Wittner BS,Jung H,Ramaswamy S,Park PJ,Maheswaran S,Ting DT,Haber DA

更新日期：2015-12-08 00:00:00

abstract：:Costimulation is required for optimal T cell activation, yet it is unclear whether poxviruses dedicatedly subvert costimulation during infection. Here, we report that the secreted M2 protein encoded by cowpox virus (CPXV) specifically interacts with human and murine B7.1 (CD80) and B7.2 (CD86). We also show that M2 co...

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

authors： Wang X,Piersma SJ,Elliott JI,Errico JM,Gainey MD,Yang L,Nelson CA,Yokoyama WM,Fremont DH

更新日期：2019-10-15 00:00:00

abstract：:Utilizing [3H]phorbol dibutyrate [P(Bu)2], we have developed an assay for high-affinity phorbol ester receptors in intact rat embryo fibroblasts. At 37 degrees C, binding of [3H]P(Bu)2 reached a maximum within 10 min and was rapidly reversible. The tumor promoters 12-O-tetradecanoyl-phorbol 13-acetate, teleocidin B, a...

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

authors： Horowitz AD,Greenebaum E,Weinstein IB

更新日期：1981-04-01 00:00:00

abstract：:A number of extracellular stimuli, including soluble cytokines and insoluble matrix factors, are known to influence murine embryonic stem cell self-renewal and differentiation behavioral responses via intracellular signaling pathways, but their net effects in combination are difficult to understand. To gain insight co...

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

authors： Prudhomme W,Daley GQ,Zandstra P,Lauffenburger DA

更新日期：2004-03-02 00:00:00

abstract：:We searched for germ-line mutations of the APC gene in 79 unrelated patients with familial adenomatous polyposis using a ribonuclease protection analysis coupled with polymerase chain reaction amplifications of genomic DNA. Mutations were found in 53 patients (67%); 28 of the mutations were small deletions and 2 were ...

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

authors： Miyoshi Y,Ando H,Nagase H,Nishisho I,Horii A,Miki Y,Mori T,Utsunomiya J,Baba S,Petersen G

更新日期：1992-05-15 00:00:00

abstract：:Standard economic and evolutionary models assume that humans are fundamentally selfish. On this view, any acts of prosociality--such as cooperation, giving, and other forms of altruism--result from covert attempts to avoid social injunctions against selfishness. However, even in the absence of social pressure, individ...

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

authors： Zaki J,Mitchell JP

更新日期：2011-12-06 00:00:00

abstract：:Epigenetic mechanisms are involved in the pathophysiology of depressive disorders and are unique potential targets for therapeutic intervention. The acetylating agent L-acetylcarnitine (LAC), a well-tolerated drug, behaves as an antidepressant by the epigenetic regulation of type 2 metabotropic glutamate (mGlu2) recep...

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

authors： Nasca C,Xenos D,Barone Y,Caruso A,Scaccianoce S,Matrisciano F,Battaglia G,Mathé AA,Pittaluga A,Lionetto L,Simmaco M,Nicoletti F

更新日期：2013-03-19 00:00:00

abstract：:Purified diphtheria toxin is shown to inhibit protein synthesis in Ehrlich-Lettré ascites carcinoma cells in vitro. Protein synthesis in Ehrlich-Lettré cells is at least 10,000 times more sensitive to toxin than protein synthesis in normal mouse spleen or thymus cells. This sensitivity correlates with the observation ...

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

authors： Iglewski BH,Rittenberg MB

更新日期：1974-07-01 00:00:00

abstract：:Natural-abundance (13)C nuclear magnetic resonance spectra of ten common nucleotides in neutral, aqueous solutions have been determined and interpreted. The spectra of two of these substances were also determined in acidic solutions, and several of the carbon chemical shifts were found to depend markedly on pH. Within...

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

authors： Dorman DE,Roberts JD

更新日期：1970-01-01 00:00:00

abstract：:Although melanomas with mutant v-Raf murine sarcoma viral oncogene homolog B1 (BRAF) can now be effectively targeted, there is no molecular target for most melanomas expressing wild-type BRAF. Here, we show that the activation of Pleckstrin homology domain-interacting protein (PHIP), promotes melanoma metastasis, can ...

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

authors： De Semir D,Nosrati M,Bezrookove V,Dar AA,Federman S,Bienvenu G,Venna S,Rangel J,Climent J,Meyer Tamgüney TM,Thummala S,Tong S,Leong SP,Haqq C,Billings P,Miller JR 3rd,Sagebiel RW,Debs R,Kashani-Sabet M

更新日期：2012-05-01 00:00:00