Isolation and characterization of delta-subspecies of protein kinase C from rat brain.

abstract：:Previous reports of a relatively air-stable soluble hydrogenase from the photosynthetic anaerobe, Chromatium vinosum, have been substantiated. The properties of this enzyme, as seen in highly purified samples prepared by procedures that permit improved yields, are described. A possible role for flavin mediation is not...

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

authors： Kakuno T,Kaplan NO,Kamen MD

更新日期：1977-03-01 00:00:00

abstract：:A complete experimental format is given for the reconstitution of human hemoglobin from the separated heme-free alpha- and beta-globin chains (alpha degrees, beta degrees) and hemin, by two alternative routes. Based on their oxygen binding properties, the reaction of the ferri-forms with reducing agent, and the respon...

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

authors： Yip YK,Waks M,Beychok S

更新日期：1977-01-01 00:00:00

abstract：:Several related classes of operators on nilpotent Lie groups are considered. These operators involve the following features: (i) oscillatory factors that are exponentials of imaginary polynomials, (ii) convolutions with singular kernels supported on lower-dimensional submanifolds, (iii) validity in the general context...

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

authors： Ricci F,Stein EM

更新日期：1986-01-01 00:00:00

abstract：:This perspective addresses recent advances in lipid transport across the Gram-negative inner and outer membranes. While we include a summary of previously existing literature regarding this topic, we focus on the maintenance of lipid asymmetry (Mla) pathway. Discovered in 2009 by the Silhavy group [J. C. Malinverni, T...

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

authors： Powers MJ,Trent MS

更新日期：2019-08-27 00:00:00

abstract：:Heat-shock protein of 90 kDa (Hsp90) is an essential molecular chaperone that adopts different 3D structures associated with distinct nucleotide states: a wide-open, V-shaped dimer in the apo state and a twisted, N-terminally closed dimer with ATP. Although the N domain is known to mediate ATP binding, how Hsp90 sense...

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

authors： Sung N,Lee J,Kim JH,Chang C,Joachimiak A,Lee S,Tsai FT

更新日期：2016-03-15 00:00:00

abstract：:Climate change is expected to alter the distribution and abundance of many species. Predictions of climate-induced population extinctions are supported by geographic range shifts that correspond to climatic warming, but few extinctions have been linked mechanistically to climate change. Here we show that extinctions o...

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

authors： McLaughlin JF,Hellmann JJ,Boggs CL,Ehrlich PR

更新日期：2002-04-30 00:00:00

abstract：:Embryonic stem cells (ESCs) represent an important research tool and a potential resource for regenerative medicine. Generally, ESCs are cocultured with a supportive feeder cell layer of murine embryonic fibroblasts, which maintain the ESCs' capacity for self-renewal and block spontaneous differentiation. These cumber...

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

authors： Miyabayashi T,Teo JL,Yamamoto M,McMillan M,Nguyen C,Kahn M

更新日期：2007-03-27 00:00:00

abstract：:Basal ganglia-thalamocortical circuits are critical for motor control and motor learning. Classically, basal ganglia nuclei are thought to regulate motor behavior by increasing or decreasing cortical firing rates, and basal ganglia diseases are assumed to reflect abnormal overall activity levels. More recent studies s...

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

authors： Kojima S,Kao MH,Doupe AJ

更新日期：2013-03-19 00:00:00

abstract：:Most cells in the well-known pre-B-lymphocyte line 18-81 have correctly assembled genes for both alleles at the immunoglobulin heavy chain locus. Only one allele is "active"; the other, "silent" allele contains an amber termination codon. The rate of reversion of this amber codon was determined to be 0.3-1 X 10(-4) pe...

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

authors： Wabl M,Burrows PD,von Gabain A,Steinberg C

更新日期：1985-01-01 00:00:00

abstract：:We investigate the roles of the pseudospin and the valley degeneracy in electron scattering at graphene edges. It is found that they are strongly correlated with charge density modulations of short-wavelength oscillations and slowly decaying beat patterns in the electronic density profile. Theoretical analyses using n...

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

authors： Park C,Yang H,Mayne AJ,Dujardin G,Seo S,Kuk Y,Ihm J,Kim G

更新日期：2011-11-15 00:00:00

abstract：:Despite the prevalence of transposable elements in the genomes of higher eukaryotes, what is virtually unknown is how they amplify to very high copy numbers without killing their host. Here, we report the discovery of rice strains where a miniature inverted-repeat transposable element (mPing) has amplified from approx...

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

authors： Naito K,Cho E,Yang G,Campbell MA,Yano K,Okumoto Y,Tanisaka T,Wessler SR

更新日期：2006-11-21 00:00:00

abstract：:Rapid electrical conduction in the His-Purkinje system tightly controls spatiotemporal activation of the ventricles. Although recent work has shed much light on the regulation of early specification and morphogenesis of the His-Purkinje system, less is known about how transcriptional regulation establishes impulse con...

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

authors： Zhang SS,Kim KH,Rosen A,Smyth JW,Sakuma R,Delgado-Olguín P,Davis M,Chi NC,Puviindran V,Gaborit N,Sukonnik T,Wylie JN,Brand-Arzamendi K,Farman GP,Kim J,Rose RA,Marsden PA,Zhu Y,Zhou YQ,Miquerol L,Henkelman RM,Sta

更新日期：2011-08-16 00:00:00

abstract：:The tissue-specific, cell-aggregating component of embryonic neural retina cells was purified from the retina cell-aggregating factor and characterized as a glycoprotein. Its molecular weight in solution is in the range of 50,000, and it contains 10-15% carbohydrate. The amino-acid and carbohydrate compositions have b...

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

authors： Hausman RE,Moscona AA

更新日期：1975-03-01 00:00:00

abstract：:We utilized the presence of hepatic receptors for galactose-terminal glycoproteins to achieve specific rescue of differentiated hepatocytes from methotrexate toxicity. This was accomplished by administration of a conjugate formed by covalent coupling of the methotrexate antagonist, folinic acid (leucovorin), to galact...

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

authors： Wu GY,Wu CH,Stockert RJ

更新日期：1983-05-01 00:00:00

abstract：:DNA-membrane attachment in cultures of E. coli B/r is found to depend on the pattern of DNA synthesis, (a) When the number of replication points increases, the fraction of the DNA that is membrane bound also increases. The relationship between the amount of DNA-membrane attachment and the number of replication points ...

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

authors： Parker DL,Glaser DA

更新日期：1975-06-01 00:00:00

abstract：:We show that the stimulation of human immunodeficiency virus (HIV) brought about by tumor necrosis factor alpha and phorbol 12-myristate 13-acetate can be inhibited by adding N-acetyl-L-cysteine (NAC). NAC, which replenishes intracellular glutathione, effectively inhibits the tumor necrosis factor alpha- or phorbol es...

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

authors： Roederer M,Staal FJ,Raju PA,Ela SW,Herzenberg LA,Herzenberg LA

更新日期：1990-06-01 00:00:00

abstract：:We have previously described an antigen-specific I-Ad-restricted T-cell hybridoma, A1.1, that constitutively releases an antigen-specific immunoregulatory activity into supernatants. Using retrovirally mediated gene transfer, we have found that transfer of the T-cell receptor alpha chain (TCR alpha) gene from A1.1 to ...

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

authors： Green DR,Bissonnette R,Zheng HG,Onda T,Echeverri F,Mogil RJ,Steele JK,Voralia M,Fotedar A

更新日期：1991-10-01 00:00:00

abstract：:In a primitive chordate model of natural chimerism, one chimeric partner is often eliminated in a process of allogeneic resorption. Here, we identify the cellular framework underlying loss of tolerance to one partner within a natural Botryllus schlosseri chimera. We show that the principal cell type mediating chimeric...

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

authors： Corey DM,Rosental B,Kowarsky M,Sinha R,Ishizuka KJ,Palmeri KJ,Quake SR,Voskoboynik A,Weissman IL

更新日期：2016-06-07 00:00:00

abstract：:Protein prenylation with farnesyl or geranylgeranyl moieties is an important posttranslational modification that affects the activity of such diverse proteins as the nuclear lamins, the yeast mating factor mata, and the ras oncogene products. In this article, we show that whole retinal cultures incorporate radioactive...

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

authors： Lai RK,Perez-Sala D,Cañada FJ,Rando RR

更新日期：1990-10-01 00:00:00

abstract：:Incubation of physiological concentrations of 125I-labeled insulin with liver membranes in the presence of anti-insulin IgG results in a 7- to 15-fold increase in the specific binding of the hormone. The low-affinity/high-capacity binding sites are replaced by an apparently homogeneous class of high-affinity sites, an...

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

authors： Shechter Y,Chang KJ,Jacobs S,Cuatrecasas P

更新日期：1979-06-01 00:00:00

abstract：:A patient with type II diabetes associated with hyperproinsulinemia has been shown to have a point mutation in one insulin gene allele, resulting in replacement of histidine with aspartic acid at position 10 of the B-chain. To investigate the basis of the proinsulin processing defect, we introduced an identical mutati...

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

authors： Gross DJ,Halban PA,Kahn CR,Weir GC,Villa-Komaroff L

更新日期：1989-06-01 00:00:00

abstract：:Synchrotron far-IR spectroscopy and density-functional calculations are used to characterize the low-frequency dynamics of model heme FeCO compounds. The "doming" vibrational mode in which the iron atom moves out of the porphyrin plane while the periphery of this ring moves in the opposite direction determines the rea...

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

authors： Klug DD,Zgierski MZ,Tse JS,Liu Z,Kincaid JR,Czarnecki K,Hemley RJ

更新日期：2002-10-01 00:00:00

abstract：:Coxiella burnetti, the etiologic agent of Q fever, is an oligate intracellular parasite of eukaryotes. Unlike the majority of successful bacterial parasites, which escape the bactericidal environment of the phagolysosome by various means, C. burnetii multiplies only in the phagolysosome. In view of the relatively hars...

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

authors： Hackstadt T,Williams JC

更新日期：1981-05-01 00:00:00

abstract：:The evolution of human languages is driven both by primitive biases present in the human sensorimotor systems and by cultural transmission among speakers. However, whether the design of the language faculty is further shaped by linguistic biological biases remains controversial. To address this question, we used near-...

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

authors： Gómez DM,Berent I,Benavides-Varela S,Bion RA,Cattarossi L,Nespor M,Mehler J

更新日期：2014-04-22 00:00:00

abstract：:A sensitive, labor-saving, and easily automatable nonradioactive procedure named APEX-FCS (amplified probe extension detected by fluorescence correlation spectroscopy) has been established to detect specific in vitro amplification of pathogen genomic sequences. As an example, Mycobacterium tuberculosis genomic DNA was...

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

authors： Walter NG,Schwille P,Eigen M

更新日期：1996-11-12 00:00:00

abstract：:Maize domestication is one of the greatest feats of artificial selection and evolution, wherein a weedy plant in Central Mexico was converted through human-mediated selection into the most productive crop in the world. In fact, the changes were so astounding that it took much of the last century to identify modern mai...

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

authors： Tian F,Stevens NM,Buckler ES 4th

更新日期：2009-06-16 00:00:00

abstract：:Phyllosphere microbial communities were evaluated on leaves of field-grown plant species by culture-dependent and -independent methods. Denaturing gradient gel electrophoresis (DGGE) with 16S rDNA primers generally indicated that microbial community structures were similar on different individuals of the same plant sp...

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

authors： Yang CH,Crowley DE,Borneman J,Keen NT

更新日期：2001-03-27 00:00:00

abstract：:Despite structural knowledge of broadly neutralizing monoclonal antibodies (NMAbs) complexed to HIV-1 gp120 and gp41 envelope glycoproteins, virus inactivation mechanisms have been difficult to prove, in part because neutralization assays are complex and were previously not understood. Concordant with recent evidence ...

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

authors： Platt EJ,Gomes MM,Kabat D

更新日期：2012-05-15 00:00:00

abstract：:Mutations in the human DYNC1H1 gene are associated with neurological diseases. DYNC1H1 encodes the heavy chain of cytoplasmic dynein-1, a 1.4-MDa motor complex that traffics organelles, vesicles, and macromolecules toward microtubule minus ends. The effects of the DYNC1H1 mutations on dynein motility, and consequently...

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

authors： Hoang HT,Schlager MA,Carter AP,Bullock SL

更新日期：2017-02-28 00:00:00

abstract：:Recent functional imaging studies have revealed coactivation in a distributed network of cortical regions that characterizes the resting state, or default mode, of the human brain. Among the brain regions implicated in this network, several, including the posterior cingulate cortex and inferior parietal lobes, have al...

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

authors： Greicius MD,Srivastava G,Reiss AL,Menon V

更新日期：2004-03-30 00:00:00