Site-directed mutagenesis of amino acid residues of protein phosphatase 1 involved in catalysis and inhibitor binding.

abstract：:Neurobiological theories of awareness propose divergent accounts of the spatial extent of brain changes that support conscious perception. Whereas focal theories posit mostly local regional changes, global theories propose that awareness emerges from the propagation of neural signals across a broad extent of sensory a...

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

authors： Godwin D,Barry RL,Marois R

更新日期：2015-03-24 00:00:00

abstract：:We have studied the involvement of the 5' cap structure in the splicing of precursor mRNAs in a HeLa nuclear extract. We show that precursor mRNAs are spliced efficiently only when they possess a cap structure and that preincubation of a HeLa nuclear extract rendered the splicing reaction highly sensitive to inhibitio...

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

authors： Edery I,Sonenberg N

更新日期：1985-11-01 00:00:00

abstract：:We have found a defect in the ouabain-sensitive Na+, K+-ATPase (Na+ pump, EC 3.6.1.37) of erythrocytes from streptozocin diabetic rats. This defect was accompanied by an increase in cell volume and osmotic fragility and a decrease in the cytosolic K+/Na+ ratio. There was also a doubling in the time needed for diabetic...

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

authors： Kowluru R,Bitensky MW,Kowluru A,Dembo M,Keaton PA,Buican T

更新日期：1989-05-01 00:00:00

abstract：:The circadian hormone melatonin is synthesized predominantly in the pineal gland by the actions of two pineal-specific enzymes: serotonin N-acetyltransferase (NAT) and hydroxyindole-O-methyltransferase (HIOMT). Pineal night-specific ATPase (PINA), another pineal- and night-specific protein we recently identified, is p...

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

authors： Li X,Chen S,Wang Q,Zack DJ,Snyder SH,Borjigin J

更新日期：1998-02-17 00:00:00

abstract：:The oncoproteins MDM2 and MDMX negatively regulate the activity and stability of the tumor suppressor protein p53, conferring tumor development and survival. Antagonists targeting the p53-binding domains of MDM2 and MDMX kill tumor cells both in vitro and in vivo by reactivating the p53 pathway, promising a class of a...

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

authors： Liu M,Li C,Pazgier M,Li C,Mao Y,Lv Y,Gu B,Wei G,Yuan W,Zhan C,Lu WY,Lu W

更新日期：2010-08-10 00:00:00

abstract：:Thrombospondin, a 450-kDa multinodular glycoprotein with lectin-type activity, is found in human platelets, endothelial cells, fibroblasts, smooth muscle cells, monocytes, and granular pneumocytes. Thrombospondin interacts with heparin, fibrinogen, fibronectin, collagen, histidine-rich glycoprotein, and plasminogen. R...

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

authors： Asch AS,Leung LL,Shapiro J,Nachman RL

更新日期：1986-05-01 00:00:00

abstract：:The quantum mechanical problem of the hydrogen atom is treated by use of a finite difference equation in place of Schrödinger's differential equation. The exact solution leads to a wave vector energy expression that is readily converted to the Bohr-Rydberg formula. (The calculations here reported are limited to spheri...

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

authors： Wall FT

更新日期：1986-08-01 00:00:00

abstract：:Previous work indicated that the light chains of a monotypic immunoglobulins G2-K and M-K from a single patient (Ti1) are identical. Our present data show that the monotypic immunoglobulins G and M share idiotypic determinants not present in their isolated light chains or in any of a large number of other immunoglobul...

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

authors： Wang AC,Wilson KS,Hopper JE,Fudenberg HH,Nisonoff A

更新日期：1970-06-01 00:00:00

abstract：:A synthetic DNA based on the known amino acid sequence of the brain/gut peptide cholecystokinin (CCK) was synthesized. This DNA contained deoxyinosines at ambiguous codon positions and was used as a probe to isolate the CCK gene directly from a human genomic library. Nucleotide sequence analysis of the isolated gene r...

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

authors： Takahashi Y,Kato K,Hayashizaki Y,Wakabayashi T,Ohtsuka E,Matsuki S,Ikehara M,Matsubara K

更新日期：1985-04-01 00:00:00

abstract：:The interaction of interleukin 8 (IL-8) with heparin was studied by using synthetic IL-8 analogs with C- and N-terminal truncations. Elimination of the N-terminal region preceding the first cysteine, which constitutes the IL-8 receptor binding site, did not affect the affinity to heparin-Sepharose. Affinity, however, ...

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

authors： Webb LM,Ehrengruber MU,Clark-Lewis I,Baggiolini M,Rot A

更新日期：1993-08-01 00:00:00

abstract：:RNA-dependent RNA polymerases (RdRps) of the Nidovirales (Coronaviridae, Arteriviridae, and 12 other families) are linked to an amino-terminal (N-terminal) domain, called NiRAN, in a nonstructural protein (nsp) that is released from polyprotein 1ab by the viral main protease (Mpro). Previously, self-GMPylation/UMPylat...

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

authors： Slanina H,Madhugiri R,Bylapudi G,Schultheiß K,Karl N,Gulyaeva A,Gorbalenya AE,Linne U,Ziebuhr J

更新日期：2021-02-09 00:00:00

abstract：:Complex I functions as a redox-linked proton pump in the respiratory chains of mitochondria and bacteria, driven by the reduction of quinone (Q) by NADH. Remarkably, the distance between the Q reduction site and the most distant proton channels extends nearly 200 Å. To elucidate the molecular origin of this long-range...

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

authors： Sharma V,Belevich G,Gamiz-Hernandez AP,Róg T,Vattulainen I,Verkhovskaya ML,Wikström M,Hummer G,Kaila VR

更新日期：2015-09-15 00:00:00

abstract：:The "false thumb" of pandas is a carpal bone, the radial sesamoid, which has been enlarged and functions as an opposable thumb. If the giant panda (Ailuropoda melanoleuca) and the red panda (Ailurus fulgens) are not closely related, their sharing of this adaptation implies a remarkable convergence. The discovery of pr...

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

authors： Salesa MJ,Antón M,Peigné S,Morales J

更新日期：2006-01-10 00:00:00

abstract：:Allostatic load (AL) is a measure of overall physiological wear-and-tear over the life course, which could partially be the consequence of early life exposures. AL could allow a better understanding of the potential biological pathways playing a role in the construction of the social gradient in adult health. To explo...

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

authors： Barboza Solís C,Kelly-Irving M,Fantin R,Darnaudéry M,Torrisani J,Lang T,Delpierre C

更新日期：2015-02-17 00:00:00

abstract：:Natively unfolded proteins play key roles in normal and pathological biochemical processes. Despite their importance for function, this category of proteins remains beyond the reach of classical structural biology because of their inherent conformational heterogeneity. We present a description of the intrinsic conform...

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

authors： Bernadó P,Blanchard L,Timmins P,Marion D,Ruigrok RW,Blackledge M

更新日期：2005-11-22 00:00:00

abstract：:CD4(+) T cells expand after transfer into lymphopenic H-2(b) A(beta)-/- mice (I-A(beta)-, I-E(alpha)-deficient mice) but not after transfer into lymphopenic MHC II(Delta/Delta) mice (I-A(alpha)-, I-A(beta)-, I-E(alpha)-, and I-E(beta)-deficient mice), implying that in H-2(b) A(beta)-/- mice, A(alpha) chain and E(beta)...

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

authors： Martin B,Bourgeois C,Dautigny N,Lucas B

更新日期：2003-05-13 00:00:00

abstract：:The fate of two recently described human B lymphocyte-specific antigens (B1 and B2) was studied after B-cell activation in vivo and in vitro. Whereas both B1 and B2 were present on virtually all B cells from normal lymph nodes, B2 was absent from approximately 50% of B cells from hyperplastic lymph nodes. When B cells...

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

authors： Stashenko P,Nadler LM,Hardy R,Schlossman SF

更新日期：1981-06-01 00:00:00

abstract：:Many substances in the plant kingdom and in man's diet occur as glycosides. Recent studies have indicated that many glycosides that are not mutagenic in tests such as the Salmonella test become mutagenic upon hydrolysis of the glycosidic linkages. The Salmonella test utilizes a liver homogenate to approximate mammalia...

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

authors： Tamura G,Gold C,Ferro-Luzzi A,Ames BN

更新日期：1980-08-01 00:00:00

abstract：:We know a great deal about the cellular response to starvation via AMPK, but less is known about the reaction to nutrient excess. Insulin resistance may be an appropriate response to nutrient excess, but the cellular sensors that link these parameters remain poorly defined. In the present study we provide evidence tha...

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

authors： Hoehn KL,Salmon AB,Hohnen-Behrens C,Turner N,Hoy AJ,Maghzal GJ,Stocker R,Van Remmen H,Kraegen EW,Cooney GJ,Richardson AR,James DE

更新日期：2009-10-20 00:00:00

abstract：:Effects of opiate receptor antagonists on centrally mediated cardiovascular responses to clonidine and beta-endorphin were studied in urethane-anesthetized spontaneously hypertensive Okamoto-Aoki rats (SHR), normotensive Sprague-Dawley rats, and Sprague-Dawley rats made hypertensive with deoxycorticosterone pivalate/s...

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

authors： Mosqueda-Garcia R,Kunos G

更新日期：1987-12-01 00:00:00

abstract：:Bacterial capsules are surface layers made of long-chain polysaccharides. They are anchored to the outer membrane of many Gram-negative bacteria, including pathogens such as Escherichia coli, Neisseria meningitidis, Haemophilus influenzae, and Pasteurella multocida. Capsules protect pathogens from host defenses includ...

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

authors： Willis LM,Stupak J,Richards MR,Lowary TL,Li J,Whitfield C

更新日期：2013-05-07 00:00:00

abstract：:Adult rat arterial smooth muscle cells (SMC) in primary culture modulate from contractile to synthetic phenotype. This process includes partial loss of myofilaments and formation of an extensive rough endoplasmic reticulum and a large Golgi complex. It gives the cells the ability to initiate DNA synthesis and actively...

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

authors： Nilsson J,Sjölund M,Palmberg L,Thyberg J,Heldin CH

更新日期：1985-07-01 00:00:00

abstract：:Clostridium botulinum neurotoxins (BoNTs), the most potent toxins known, disrupt neurotransmission through proteolysis of proteins involved in neuroexocytosis. The light chains of BoNTs are unique zinc proteases that have stringent substrate specificity and require exceptionally long substrates. We have determined the...

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

authors： Segelke B,Knapp M,Kadkhodayan S,Balhorn R,Rupp B

更新日期：2004-05-04 00:00:00

abstract：:A well-known indication that a nucleotide has bound to myosin is the enhancement of the fluorescence of a specific tryptophan in the "subfragment 1" segment of the protein. Empirically the effect has been enormously useful in myosin enzymology. But beyond an early suggestion that it arises from a purine-tryptophan cha...

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

authors： Bivin DB,Kubota S,Pearlstein R,Morales MF

更新日期：1993-07-15 00:00:00

abstract：:T cell-mediated autoimmune diseases such as type 1 diabetes (T1D) are believed to be the result in part of inefficient negative selection of self-specific thymocytes. However, the events regulating thymic negative selection are not fully understood. In the current study, we demonstrate that nonobese diabetic (NOD) mic...

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

authors： Wallet MA,Flores RR,Wang Y,Yi Z,Kroger CJ,Mathews CE,Earp HS,Matsushima G,Wang B,Tisch R

更新日期：2009-03-24 00:00:00

abstract：:Most Escherichia coli promoters initiate transcription with a purine 7 or 8 nt downstream from the -10 hexamer, but some promoters, including the ribosomal RNA promoter rrnB P1, start 9 nt from the -10 element. We identified promoter and RNA polymerase determinants of this noncanonical rrnB P1 start site using biochem...

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

authors： Winkelman JT,Chandrangsu P,Ross W,Gourse RL

更新日期：2016-03-29 00:00:00

abstract：:For a number of viruses, oligomerization is a critical component of envelope processing and surface expression. Previously, we reported that a synthetic peptide (DP-107) corresponding to the putative leucine zipper region (aa 553-590) of the transmembrane protein (gp41) of human immunodeficiency virus type 1 (HIV-1) e...

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

authors： Wild C,Dubay JW,Greenwell T,Baird T Jr,Oas TG,McDanal C,Hunter E,Matthews T

更新日期：1994-12-20 00:00:00

abstract：:Polycomb group proteins are essential regulators of developmental processes across animals. Despite their importance, studies on Polycomb are often restricted to classical model systems and, as such, little is known about the evolution of these important chromatin regulators. Here we focus on Polycomb Repressive Compl...

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

authors： Gahan JM,Rentzsch F,Schnitzler CE

更新日期：2020-09-15 00:00:00

abstract：:Ischemia and reperfusion both contribute to tissue damage after myocardial infarction. Although many drugs have been shown to reduce infarct size when administered before ischemia, few have been shown to be effective when administered at reperfusion. Moreover, although it is generally accepted that a burst of reactive...

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

authors： Granville DJ,Tashakkor B,Takeuchi C,Gustafsson AB,Huang C,Sayen MR,Wentworth P Jr,Yeager M,Gottlieb RA

更新日期：2004-02-03 00:00:00

abstract：:Chromophore-assisted light inactivation (CALI) offers the only method capable of modulating specific protein activities in localized regions and at particular times. Here, we generalize CALI so that it can be applied to a wider range of tasks. Specifically, we show that CALI can work with a genetically inserted epitop...

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

authors： Surrey T,Elowitz MB,Wolf PE,Yang F,Nédélec F,Shokat K,Leibler S

更新日期：1998-04-14 00:00:00