Mechanism of dexamethasone inhibition of plasminogen activator in rat hepatoma cells.

abstract：:Genome packaging is an essential step in virus replication and a potential drug target. Single-stranded RNA viruses have been thought to encapsidate their genomes by gradual co-assembly with capsid subunits. In contrast, using a single molecule fluorescence assay to monitor RNA conformation and virus assembly in real ...

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

authors： Borodavka A,Tuma R,Stockley PG

更新日期：2012-09-25 00:00:00

abstract：:In the yeast Saccharomyces cerevisiae, mutations in either of two unlinked genes, RAM1 or RAM2, abolish the farnesyltransferase activity responsible for prenylation of Ras proteins and the a-factor mating pheromone. Here we report that the function of RAM1 and RAM2 genes is required for the membrane localization of Ra...

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

authors： He B,Chen P,Chen SY,Vancura KL,Michaelis S,Powers S

更新日期：1991-12-15 00:00:00

abstract：:By using a systematic genetic approach, the resonances in the 19F NMR spectrum of 3-fluorotyrosine-substituted lac repressor protein have been assigned. The NMR data indicate that each monomer of the repressor consists of two distinct and independent domains. One domain, the NH2-terminal sixth of the primary sequence,...

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

authors： Jarema MA,Lu P,Miller JH

更新日期：1981-05-01 00:00:00

abstract：:Rifamycin antibiotics, which inhibit RNA-directed DNA polymerase of Rauscher leuckemia virus, prevent the leukemogenic activity of the virus, and the effect of leukemogenesis correlates with the magnitude of inhibition of the purified enzyme. This inhibition of enzyme activity by rifamycin SV derivatives is due to a r...

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

authors： Wu AM,Ting RC,Gallo RC

更新日期：1973-05-01 00:00:00

abstract：:Cortical blood flow at the level of individual capillaries and the coupling of neuronal activity to flow in capillaries are fundamental aspects of homeostasis in the normal and the diseased brain. To probe the dynamics of blood flow at this level, we used two-photon laser scanning microscopy to image the motion of red...

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

authors： Kleinfeld D,Mitra PP,Helmchen F,Denk W

更新日期：1998-12-22 00:00:00

abstract：:S3I-201 (NSC 74859) is a chemical probe inhibitor of Stat3 activity, which was identified from the National Cancer Institute chemical libraries by using structure-based virtual screening with a computer model of the Stat3 SH2 domain bound to its Stat3 phosphotyrosine peptide derived from the x-ray crystal structure of...

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

authors： Siddiquee K,Zhang S,Guida WC,Blaskovich MA,Greedy B,Lawrence HR,Yip ML,Jove R,McLaughlin MM,Lawrence NJ,Sebti SM,Turkson J

更新日期：2007-05-01 00:00:00

abstract：:Many experiments in the past have demonstrated the requirement of de novo gene expression during the long-term retention of learning and memory. Although previous studies implicated individual genes or genetic pathways in learning and memory, they did not uncover the collective behaviors or patterns of the genes. We h...

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

authors： Cavallaro S,D'Agata V,Manickam P,Dufour F,Alkon DL

更新日期：2002-12-10 00:00:00

abstract：:To understand the evolution of a Theory of Mind, we need to understand the selective factors that might have jumpstarted its initial evolution. We argue that a subconscious, reflexive appreciation of others' intentions, emotions, and perspectives is at the roots of even the most complex forms of Theory of Mind and tha...

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

authors： Seyfarth RM,Cheney DL

更新日期：2013-06-18 00:00:00

abstract：:We studied the surface delivery pathways followed by newly synthesized plasma membrane proteins in intestinal cells. To this end, we developed an assay and characterized an epithelial cell line (SK-CO-15) derived from human colon adenocarcinoma. Polarized confluent monolayers (2000 omega.cm2), grown on polycarbonate f...

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

authors： Le Bivic A,Real FX,Rodriguez-Boulan E

更新日期：1989-12-01 00:00:00

abstract：:A pH-dependent transition between delocalized and trapped mixed valence states of an engineered CuA center in azurin has been investigated by UV-visible absorption and electron paramagnetic resonance spectroscopic techniques. At pH 7.0, the CuA azurin displays a typical delocalized mixed valence dinuclear [Cu(1.5).......

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

authors： Hwang HJ,Lu Y

更新日期：2004-08-31 00:00:00

abstract：:Antibodies capable of decarboxylating orotate were sought by immunization with a hapten designed to elicit antibodies with combining sites that resemble the orotate-binding and catalytic portion of the active site of the enzyme orotidine 5'-monophosphate (OMP) decarboxylase (orotidine-5'-monophosphate carboxy-lyase, E...

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

authors： Smiley JA,Benkovic SJ

更新日期：1994-08-30 00:00:00

abstract：:The substance P (SP)-preferring receptor neurokinin-1 receptor (NK-1R) has two forms: a full-length receptor consisting of 407 aa and a truncated receptor consisting of 311 aa. These two receptors differ in the length of the C terminus of NK-1R. We studied the undifferentiated and phorbol myristate acetate (PMA)-diffe...

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

authors： Lai JP,Ho WZ,Kilpatrick LE,Wang X,Tuluc F,Korchak HM,Douglas SD

更新日期：2006-05-16 00:00:00

abstract：:Members of the polo subfamily of protein kinases play pivotal roles in cell-cycle control and proliferation. In addition to a high degree of sequence similarity in the kinase domain, polo kinases contain a strikingly conserved motif termed "polo-box" in the noncatalytic C-terminal domain. We have previously shown that...

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

authors： Lee KS,Song S,Erikson RL

更新日期：1999-12-07 00:00:00

abstract：:Electrophysiological and activity-dependent gene expression studies of birdsong have contributed to the understanding of the neural representation of natural sounds. However, we have limited knowledge about the overall spatial topography of song representation in the avian brain. Here, we adapt the noninvasive functio...

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

authors： Voss HU,Tabelow K,Polzehl J,Tchernichovski O,Maul KK,Salgado-Commissariat D,Ballon D,Helekar SA

更新日期：2007-06-19 00:00:00

abstract：:Huntington's disease (HD) is classically characterized as a movement disorder, however cognitive impairments precede the motor symptoms by ∼15 y. Based on proteomic and bioinformatic data linking the Huntingtin protein (Htt) and KCC2, which is required for hyperpolarizing GABAergic inhibition, and the important role o...

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

authors： Dargaei Z,Bang JY,Mahadevan V,Khademullah CS,Bedard S,Parfitt GM,Kim JC,Woodin MA

更新日期：2018-02-13 00:00:00

abstract：:Whether electromagnetic precursors to earthquakes (EQs) exist is an important question not only for EQ prediction but also for understanding the physical processes of EQ generation. Slow transient geoelectric potential changes have been observed before several recent EQs in Japan. In most cases, they appeared 1-19 day...

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

authors： Uyeda S,Nagao T,Orihara Y,Yamaguchi T,Takahashi I

更新日期：2000-04-25 00:00:00

abstract：:A 37-kDa glycoprotein has been described recently, whose synthesis is dramatically increased after injury of the rat sciatic and optic nerves. Cells in the nerve sheath, distal to the site of injury, produce and secrete large amounts of this protein, so that by 3 weeks after injury, it represents 2-5% of the total sol...

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

authors： Ignatius MJ,Gebicke-Härter PJ,Skene JH,Schilling JW,Weisgraber KH,Mahley RW,Shooter EM

更新日期：1986-02-01 00:00:00

abstract：:We present whole-genome assemblies of four divergent Arabidopsis thaliana strains that complement the 125-Mb reference genome sequence released a decade ago. Using a newly developed reference-guided approach, we assembled large contigs from 9 to 42 Gb of Illumina short-read data from the Landsberg erecta (Ler-1), C24,...

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

authors： Schneeberger K,Ossowski S,Ott F,Klein JD,Wang X,Lanz C,Smith LM,Cao J,Fitz J,Warthmann N,Henz SR,Huson DH,Weigel D

更新日期：2011-06-21 00:00:00

abstract：:The M2 protein of influenza A virus forms a transmembrane proton channel important for viral infection and replication. Amantadine blocks this channel, thus inhibiting viral replication. Elucidating the high-resolution structure of the M2 protein and its change upon amantadine binding is crucial for designing antivira...

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

authors： Cady SD,Hong M

更新日期：2008-02-05 00:00:00

abstract：:Cell-free DNA shed by cancer cells has been shown to be a rich source of putative tumor-specific biomarkers. Because cell-free DNA from brain and spinal cord tumors cannot usually be detected in the blood, we studied whether the cerebrospinal fluid (CSF) that bathes the CNS is enriched for tumor DNA, here termed CSF-t...

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

authors： Wang Y,Springer S,Zhang M,McMahon KW,Kinde I,Dobbyn L,Ptak J,Brem H,Chaichana K,Gallia GL,Gokaslan ZL,Groves ML,Jallo GI,Lim M,Olivi A,Quinones-Hinojosa A,Rigamonti D,Riggins GJ,Sciubba DM,Weingart JD,Wolinsky JP

更新日期：2015-08-04 00:00:00

abstract：:Staphylococcus aureus is a leading cause of both nosocomial and community-acquired infection. Biofilm formation at the site of infection reduces antimicrobial susceptibility and can lead to chronic infection. During biofilm formation, a subset of cells liberate cytoplasmic proteins and DNA, which are repurposed to for...

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

authors： DeFrancesco AS,Masloboeva N,Syed AK,DeLoughery A,Bradshaw N,Li GW,Gilmore MS,Walker S,Losick R

更新日期：2017-07-18 00:00:00

abstract：:The livers of insulin-resistant, diabetic mice manifest selective insulin resistance, suggesting a bifurcation in the insulin signaling pathway: Insulin loses its ability to block glucose production (i.e., it fails to suppress PEPCK and other genes of gluconeogenesis), yet it retains its ability to stimulate fatty aci...

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

authors： Li S,Brown MS,Goldstein JL

更新日期：2010-02-23 00:00:00

abstract：:For the purpose of clarifying the magneto-orientation mechanism of several biological membrane systems, xylene-suspended thin-layered single crystals of lecithin, which is a major component of membranes, were subjected to magnetic fields of various strengths, and the orientation behavior of the crystals was analyzed. ...

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

authors： Sakurai I,Kawamura Y,Ikegami A,Iwayanagi S

更新日期：1980-12-01 00:00:00

abstract：:Regulation of leukocyte integrin avidity is a crucial aspect of inflammation and immunity. The actin cytoskeleton has an important role in the regulation of integrin function, but the cytoskeletal proteins involved are largely unknown. Because inflammatory stimuli that activate integrin-mediated adhesion in human poly...

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

authors： Jones SL,Wang J,Turck CW,Brown EJ

更新日期：1998-08-04 00:00:00

abstract：:Eukaryote cell division features a chromosome compaction-decompaction cycle that is synchronized with their physical and topological segregation. It has been proposed that lengthwise compaction of chromatin into mitotic chromosomes via loop extrusion underlies the compaction-segregation/resolution process. We analyze ...

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

authors： Brahmachari S,Marko JF

更新日期：2019-12-10 00:00:00

abstract：:Intracellular proteolytic processing of precursor polypeptides is an essential step in the maturation of many proteins, including plasma proteins, hormones, neuropeptides, and growth factors. Most frequently, propeptide cleavage occurs after paired basic amino acid residues. To date, no mammalian propeptide processing...

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

authors： Wise RJ,Barr PJ,Wong PA,Kiefer MC,Brake AJ,Kaufman RJ

更新日期：1990-12-01 00:00:00

abstract：:Amyotrophic lateral sclerosis (ALS) is a devastating human disease of upper and lower motoneurons of unknown etiology. In support of the potential role of autoimmunity in ALS, two immune-mediated animal models of motoneuron disease have been developed that resemble ALS with respect to the loss of motoneurons, the pres...

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

authors： Appel SH,Engelhardt JI,García J,Stefani E

更新日期：1991-01-15 00:00:00

abstract：:A method is presented for variational calculation of the energy and the spin densities derived from a single-determinant wavefunction. Sum and difference coordinates [unk]R = (1/2)([unk]r(1) + [unk]r(1)) and [unk]r = [unk]r(1) - [unk]r(1) are introduced, and the density matrix P([unk]r(1),[unk]r(1)) is expanded in par...

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

authors： Payne PW

更新日期：1980-11-01 00:00:00

abstract：:We previously reported that KIF3A and KIF3B form a heterodimer that functions as a microtubule-based fast anterograde translocator of membranous organelles. We have also shown that this KIF3A/3B forms a complex with other associated polypeptides, named kinesin superfamily-associated protein 3 (KAP3). In the present st...

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

authors： Yamazaki H,Nakata T,Okada Y,Hirokawa N

更新日期：1996-08-06 00:00:00

abstract：:Replication of plasmid DNA molecules containing the simian virus 40 (SV40) origin of DNA replication has been reconstituted with seven highly purified cellular proteins plus the SV40 large tumor (T) antigen. Initiation of DNA synthesis is absolutely dependent upon T antigen, replication protein A, and the DNA polymera...

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

authors： Weinberg DH,Collins KL,Simancek P,Russo A,Wold MS,Virshup DM,Kelly TJ

更新日期：1990-11-01 00:00:00