Poliovirus polypeptide precursors: expression in vitro and processing by exogenous 3C and 2A proteinases.

abstract：:Transgenic mice harboring the int-2/Fgf-3 protooncogene under transcriptional control of the mouse mammary tumor virus (MMTV) promoter/enhancer exhibit a dramatic, benign hyperplasia of the mammary gland. In one int-2 transgenic line (TG.NX), this growth disturbance is evoked by pregnancy and regresses after parturiti...

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

authors： Lee FS,Lane TF,Kuo A,Shackleford GM,Leder P

更新日期：1995-03-14 00:00:00

abstract：:Ten eleven translocation (TET) enzymes (TET1/TET2/TET3) and thymine DNA glycosylase (TDG) play crucial roles in early embryonic and germ cell development by mediating DNA demethylation. However, the molecular mechanisms that regulate TETs/TDG expression and their role in cellular differentiation, including that of the...

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

authors： Fu X,Jin L,Wang X,Luo A,Hu J,Zheng X,Tsark WM,Riggs AD,Ku HT,Huang W

更新日期：2013-10-29 00:00:00

abstract：:The effect of x-rays on the rate of semiconservative DNA replication was investigated by autoradiography in single cells obtained from normal individuals and from patients having ataxia-telangiectasia (AT). In the five AT cell strains studied, the rate of DNA synthesis was inhibited to a lesser extent that in two norm...

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

authors： Jaspers NG,Bootsma D

更新日期：1982-04-01 00:00:00

abstract：:The four-helical bundle soluble N-ethylmaleimide-sensitive fusion protein (NSF) attachment protein receptor (SNARE) complex that mediates intracellular membrane fusion events contains a highly conserved ionic layer at the center of an otherwise hydrophobic core. This layer has an undetermined function; it consists of ...

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

authors： Scales SJ,Yoo BY,Scheller RH

更新日期：2001-12-04 00:00:00

abstract：:p63 inhibits metastasis. Here, we show that p63 (both TAp63 and ΔNp63 isoforms) regulates expression of miR-205 in prostate cancer (PCa) cells, and miR-205 is essential for the inhibitory effects of p63 on markers of epithelial-mesenchymal transition (EMT), such as ZEB1 and vimentin. Correspondingly, the inhibitory ef...

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

authors： Tucci P,Agostini M,Grespi F,Markert EK,Terrinoni A,Vousden KH,Muller PA,Dötsch V,Kehrloesser S,Sayan BS,Giaccone G,Lowe SW,Takahashi N,Vandenabeele P,Knight RA,Levine AJ,Melino G

更新日期：2012-09-18 00:00:00

abstract：:The conformation of the pressure-dissociated monomer of Arc repressor was characterized by 1H NMR spectroscopy. The NMR spectra of the monomer under pressure (up to 5.0 kbar; 1 bar = 100 kPa) are typical of a molten globule and they are considerably different from those of the native dimer and thermally denatured mono...

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

authors： Peng X,Jonas J,Silva JL

更新日期：1993-03-01 00:00:00

abstract：:Axiomatic foundations for a theory of perception have been given in a prior communication [Shiman, L. G. (1978) Proc. Natl. Acad. Sci. USA 75, 2049-2053]. The theory is based on mathematically characterized stable images. Stable images model subjective (psychological) states of observers. We showed there is a universa...

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

authors： Shiman LG

更新日期：1978-05-01 00:00:00

abstract：:It is found that the addition of hexamethylphosphoramide to the solution of an alkyne, Et(2)Zn, and (S)-1,1'-bi-2-naphthol in methylene chloride allows the generation of an alkynylzinc at room temperature and shows highly enantioselective additions to aldehydes. The mild condition for the formation of the alkynylzinc ...

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

authors： Gao G,Xie RG,Pu L

更新日期：2004-04-13 00:00:00

abstract：:The lateral neural plate border (NPB), the neural part of the vertebrate neural border, is composed of central nervous system (CNS) progenitors and peripheral nervous system (PNS) progenitors. In invertebrates, PNS progenitors are also juxtaposed to the lateral boundary of the CNS. Whether there are conserved molecula...

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

authors： Li Y,Zhao D,Horie T,Chen G,Bao H,Chen S,Liu W,Horie R,Liang T,Dong B,Feng Q,Tao Q,Liu X

更新日期：2017-08-01 00:00:00

abstract：:A 6.1-kilobase insertion into the rudimentary (r) gene was cloned and partially sequenced. The insertion consists of a 703-base-pair (bp) P element next to a 5.4-kilobase single-copy sequence. The normal position of the single-copy sequence is near the tip of the X chromosome. Upon insertion into the r gene, this chim...

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

authors： Tsubota SI,Huong DV

更新日期：1991-02-01 00:00:00

abstract：:The influx of Ca ions into the presynaptic nerve terminal through ion channels is a key link between the action potential and the release of chemical transmitters. It is not clear, however, which types of Ca channel are involved in neurosecretion at vertebrate synapses. In particular, there is disagreement as to wheth...

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

authors： Stanley EF,Atrakchi AH

更新日期：1990-12-01 00:00:00

abstract：:Spatial organization of the binding sites for the priming substrate, the template DNA, and the transcription inhibitor rifampicin (Rif) in Escherichia coli RNA polymerase (EC 2.7.7.6) was probed with chimeric compounds in which Rif is covalently attached to a ribonucleotide. The compounds bind to RNA polymerase in bif...

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

authors： Mustaev A,Zaychikov E,Severinov K,Kashlev M,Polyakov A,Nikiforov V,Goldfarb A

更新日期：1994-12-06 00:00:00

abstract：:The recent observation of superconductivity in [Formula: see text] has raised fundamental questions about the hierarchy of the underlying electronic structure. Calculations suggest that this system falls in the Mott-Hubbard regime, rather than the charge-transfer configuration of other nickel oxides and the supercondu...

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

authors： Goodge BH,Li D,Lee K,Osada M,Wang BY,Sawatzky GA,Hwang HY,Kourkoutis LF

更新日期：2021-01-12 00:00:00

abstract：:The present study investigated whether neural structures become less functionally differentiated and specialized with age. We studied ventral visual cortex, an area of the brain that responds selectively to visual categories (faces, places, and words) in young adults, and that shows little atrophy with age. Functional...

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

authors： Park DC,Polk TA,Park R,Minear M,Savage A,Smith MR

更新日期：2004-08-31 00:00:00

abstract：:To explore the basis for the template specificities of the bacteriophage T3 and T7 RNA polymerases (EC 2.7.7.6), we determined the nucleotide sequences of six promoters recognized by the T3 RNA polymerase and compared them with the previously determined promoter sequences recognized by the bacteriophage T7 RNA polymer...

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

authors： Bailey JN,Klement JF,McAllister WT

更新日期：1983-05-01 00:00:00

abstract：:Fungi produce numerous low molecular weight molecules endowed with a multitude of biological activities. However, mining the full-genome sequences of fungi indicates that their potential to produce secondary metabolites is greatly underestimated. Because most of the biosynthesis gene clusters are silent under laborato...

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

authors： Schroeckh V,Scherlach K,Nützmann HW,Shelest E,Schmidt-Heck W,Schuemann J,Martin K,Hertweck C,Brakhage AA

更新日期：2009-08-25 00:00:00

abstract：:We report here the identification of a pollen-specific gene from Zea mays that contains multiple Ser-(Pro)n repeats, the motif found in the cell wall-associated extensins. Sequence analysis reveals that the encoded protein has a putative globular domain at the N terminus and an extensin-like domain at the C terminus. ...

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

authors： Rubinstein AL,Broadwater AH,Lowrey KB,Bedinger PA

更新日期：1995-04-11 00:00:00

abstract：:The Paleocene/Eocene thermal maximum (PETM) and associated carbon isotope excursion (CIE) are often touted as the best geologic analog for the current anthropogenic rise in pCO2. However, a causal mechanism for the PETM CIE remains unidentified because of large uncertainties in the duration of the CIE's onset. Here, w...

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

authors： Wright JD,Schaller MF

更新日期：2013-10-01 00:00:00

abstract：:N6-Cyclohexyl[3H]adenosine ([3H]CHA) and 1,3-diethyl-8-[3H]phenylxanthine ([3H]DPX) to bind to adenosine receptors in brain membranes. The agonist [3H]CHA has high affinity in both bovine and guinea pig brain (Kd, 0.7 nM and 6 nM, respectively). [3H]CHA binding kinetics are slow (dissociation t1/2;60 min); binding is ...

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

authors： Bruns RF,Daly JW,Snyder SH

更新日期：1980-09-01 00:00:00

abstract：:The COVID-19 pandemic is a shocking reminder of how our world would look in the absence of vaccination. Fortunately, new technologies, the pace of understanding new and existing pathogens, and the increased knowledge of the immune system allow us today to develop vaccines at an unprecedented speed. Some of the vaccine...

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

authors： Rappuoli R,De Gregorio E,Del Giudice G,Phogat S,Pecetta S,Pizza M,Hanon E

更新日期：2021-01-19 00:00:00

abstract：:Peroxisome proliferators (PP) induce a highly predictable pleiotropic response in rat and mouse liver that is characterized by hepatomegaly, increase in peroxisome number in hepatocytes, and induction of certain peroxisomal enzymes. The PP-binding protein (PPbP) was purified from rat liver cytosol by a two-step proced...

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

authors： Lalwani ND,Alvares K,Reddy MK,Reddy MN,Parikh I,Reddy JK

更新日期：1987-08-01 00:00:00

abstract：:Transcriptional activation of cytochrome P450 (CYP) genes and various drug metabolizing enzymes by the prototypical inducer phenobarbital (PB) and many other drugs and chemicals is an adaptive response of the organism to exposure to xenobiotics. The response to PB is mediated by the nuclear receptor constitutive andro...

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

authors： Blättler SM,Rencurel F,Kaufmann MR,Meyer UA

更新日期：2007-01-16 00:00:00

abstract：:Biosynthesis of sucrose-6-P catalyzed by sucrose-phosphate synthase (SPS), and the presence of sucrose-phosphate phosphatase (SPP) leading to the formation of sucrose, have both been ascertained in a prokaryotic organism: Anabaena 7119, a filamentous heterocystic cyanobacterium. Two SPS activities (SPS-I and SPS-II) w...

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

authors： Porchia AC,Salerno GL

更新日期：1996-11-26 00:00:00

abstract：:Minimally invasive detection of cell death could prove an invaluable resource in many physiologic and pathologic situations. Cell-free circulating DNA (cfDNA) released from dying cells is emerging as a diagnostic tool for monitoring cancer dynamics and graft failure. However, existing methods rely on differences in DN...

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

authors： Lehmann-Werman R,Neiman D,Zemmour H,Moss J,Magenheim J,Vaknin-Dembinsky A,Rubertsson S,Nellgård B,Blennow K,Zetterberg H,Spalding K,Haller MJ,Wasserfall CH,Schatz DA,Greenbaum CJ,Dorrell C,Grompe M,Zick A,Hubert A,M

更新日期：2016-03-29 00:00:00

abstract：:NAD(P)H:quinone oxidoreductase (NQOR; EC 1.6.99.2) is a homodimeric enzyme which catalyzes the reduction of quinones, azo dyes, and other electron acceptors by NADPH or NADH. To pursue subunit functional studies, we expressed a wild-type/mutant heterodimer of NQOR in Escherichia coli. The wild-type subunit of the hete...

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

authors： Cui K,Lu AY,Yang CS

更新日期：1995-02-14 00:00:00

abstract：:CD45, a protein tyrosine phosphatase that regulates Src family kinases, is important for regulating T cell and B cell receptor signaling; however, little is known about how CD45 regulates immunoreceptor tyrosine-based activation motif (ITAM)-dependent natural killer (NK) cell receptor signaling and the resulting effec...

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

authors： Hesslein DG,Takaki R,Hermiston ML,Weiss A,Lanier LL

更新日期：2006-05-02 00:00:00

abstract：:Despite the importance of Mg(2+) for numerous cellular activities, the mechanisms underlying its import and homeostasis are poorly understood. The CorA family is ubiquitous and is primarily responsible for Mg(2+) transport. However, the key questions-such as, the ion selectivity, the transport pathway, and the gating ...

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

authors： Guskov A,Nordin N,Reynaud A,Engman H,Lundbäck AK,Jong AJ,Cornvik T,Phua T,Eshaghi S

更新日期：2012-11-06 00:00:00

abstract：:Preferential phosphorylation of specific proteins by cAMP-dependent protein kinase (PKA) may be mediated in part by the anchoring of PKA to a family of A-kinase anchor proteins (AKAPs) positioned in close proximity to target proteins. This interaction is thought to depend on binding of the type II regulatory (RII) sub...

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

authors： Burton KA,Johnson BD,Hausken ZE,Westenbroek RE,Idzerda RL,Scheuer T,Scott JD,Catterall WA,McKnight GS

更新日期：1997-09-30 00:00:00

abstract：:After collision with their host cells, virus particles may remain mobile on cell surfaces until they become attached at firm binding sites. We propose that a virion will arrive within a typical median time at such a site, generating a membrane signal such as an increased membrane fluorescence in cells labeled with the...

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

authors： Bayer ME,Bayer MH

更新日期：1981-09-01 00:00:00

abstract：:The Paramyxoviridae family of enveloped viruses enters cells through the concerted action of two viral glycoproteins. The receptor-binding protein, hemagglutinin-neuraminidase (HN), H, or G, binds its cellular receptor and activates the fusion protein, F, which, through an extensive refolding event, brings viral and c...

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

authors： Bose S,Zokarkar A,Welch BD,Leser GP,Jardetzky TS,Lamb RA

更新日期：2012-09-25 00:00:00