Integrin activation controls metastasis in human breast cancer.

abstract：:The principal methyl donor of the cell, S-adenosylmethionine (SAMe), is produced by the highly conserved family of methionine adenosyltranferases (MATs) via an ATP-driven process. These enzymes play an important role in the preservation of life, and their dysregulation has been tightly linked to liver and colon cancer...

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

authors： Murray B,Antonyuk SV,Marina A,Lu SC,Mato JM,Hasnain SS,Rojas AL

更新日期：2016-02-23 00:00:00

abstract：:Charge transfer at metallo-molecular interfaces may be used to design multifunctional hybrids with an emergent magnetization that may offer an eco-friendly and tunable alternative to conventional magnets and devices. Here, we investigate the origin of the magnetism arising at these interfaces by using different techni...

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

authors： Al Ma'Mari F,Rogers M,Alghamdi S,Moorsom T,Lee S,Prokscha T,Luetkens H,Valvidares M,Teobaldi G,Flokstra M,Stewart R,Gargiani P,Ali M,Burnell G,Hickey BJ,Cespedes O

更新日期：2017-05-30 00:00:00

abstract：:The transporter associated with antigen processing (TAP) is essential for intracellular transport of protein fragments into the endoplasmic reticulum for loading of major histocompatibility complex (MHC) class I molecules. On the cell surface, these peptide-MHC complexes are monitored by cytotoxic T lymphocytes. To st...

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

authors： Gorbulev S,Abele R,Tampé R

更新日期：2001-03-27 00:00:00

abstract：:The guanidinium group of arginine-166 has been postulated to act as an electrophilic species during phosphorylation of alkaline phosphatase. Its role could be either to stabilize the developing negative charge on the oxygen of the leaving group or the pentacoordinate transition state or to help bind the -PO2-3 group. ...

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

authors： Butler-Ransohoff JE,Kendall DA,Kaiser ET

更新日期：1988-06-01 00:00:00

abstract：:DNA "breathing" is a thermally driven process in which base-paired DNA sequences transiently adopt local conformations that depart from their most stable structures. Polymerases and other proteins of genome expression require access to single-stranded DNA coding templates located in the double-stranded DNA "interior,"...

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

authors： Phelps C,Lee W,Jose D,von Hippel PH,Marcus AH

更新日期：2013-10-22 00:00:00

abstract：:Optical imaging of individual vesicle exocytosis is providing new insights into the mechanism and regulation of secretion by cells. To study calcium-triggered secretion from astrocytes, we used acridine orange (AO) to label vesicles. Although AO is often used for imaging exocytosis, we found that imaging vesicles labe...

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

authors： Jaiswal JK,Fix M,Takano T,Nedergaard M,Simon SM

更新日期：2007-08-28 00:00:00

abstract：:Cisplatin is a chemotherapeutic drug used to treat a variety of cancers. Both intrinsic and acquired resistance to cisplatin, as well as toxicity, limit its effectiveness. Molecular mechanisms that underlie cisplatin resistance are poorly understood. Here we demonstrate that deletion of the yeast CTR1 gene, which enco...

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

authors： Ishida S,Lee J,Thiele DJ,Herskowitz I

更新日期：2002-10-29 00:00:00

abstract：:Hexamethylene bisacetamide (HMBA) induces in vitro the cytodifferentiation of PCC3/A/1 mouse embryonal carcinoma (EC) cells. In EC cells, actin is associated with surface structures but microfilament bundles are not seen. After 2 days of HMBA treatment, rounded EC cells are converted to flat adhesive ones with a devel...

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

authors： Paulin D,Perreau J,Jakob H,Jacob F,Yaniv M

更新日期：1979-04-01 00:00:00

abstract：:Fragile X syndrome, the most frequent form of hereditary mental retardation, is due to a mutation of the fragile X mental retardation 1 (FMR1) gene on the X chromosome. Like fragile X patients, FMR1-knockout (FMR1-KO) mice lack the normal fragile X mental retardation protein (FMRP) and show both cognitive alterations ...

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

authors： Restivo L,Ferrari F,Passino E,Sgobio C,Bock J,Oostra BA,Bagni C,Ammassari-Teule M

更新日期：2005-08-09 00:00:00

abstract：:Recently, surface-sensitive spectroscopy data and molecular dynamics simulations have generated intense interest in the distribution of electrolyte ions between bulk water and the air/water interface. A partitioning model for cations and anions developed for biopolymer surface is extended here to interpret the effects...

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

authors： Pegram LM,Record MT Jr

更新日期：2006-09-26 00:00:00

abstract：:Here, we identified and characterized a Ly49 family member, designated as Ly49Q. The Ly49q gene encodes a 273-aa protein with an immunoreceptor tyrosine-based inhibitory motif (ITIM) at the N terminus of its cytoplasmic domain. We show that the ITIM of Ly49Q can recruit SHP-2 and SHP-1 in a tyrosine phosphorylation-de...

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

authors： Toyama-Sorimachi N,Tsujimura Y,Maruya M,Onoda A,Kubota T,Koyasu S,Inaba K,Karasuyama H

更新日期：2004-01-27 00:00:00

abstract：:In cerebellar granule neurons of neonatal rats micromolar concentrations of 7-chloro-3-methyl-3,4-dihydro-2H-1,2, 4-benzothiadiazine S,S-dioxide (IDRA-21) and cyclothiazide, two negative modulators of the spontaneous agonist-dependent rapid desensitization of alpha-amino-3-hydroxy-5-methylisoxazolepropionic acid (AMPA...

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

authors： Impagnatiello F,Oberto A,Longone P,Costa E,Guidotti A

更新日期：1997-06-24 00:00:00

abstract：:Normal human cells whether embryonic, neonatal, or adult are resistant to experimentally induced tumorigenesis in contrast to rodent or chicken cells. We showed previously that neither transformation with simian virus 40 DNA nor transfection with human mutant HRAS DNA immortalized FS-2 cells (diploid, neonatal human f...

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

authors： O'Brien W,Stenman G,Sager R

更新日期：1986-11-01 00:00:00

abstract：:Cytochrome P450(BioI) (CYP107H1) from the biotin operon of Bacillus subtilis forms a seven-carbon diacid through a multistep oxidative cleavage of a fatty acid linked to acyl carrier protein (ACP). Crystal structures of P450(BioI) in complex with three different length fatty acyl-ACP (Escherichia coli) ligands show th...

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

authors： Cryle MJ,Schlichting I

更新日期：2008-10-14 00:00:00

abstract：:Single cortical neurons in the mammalian brain receive signals arising from multiple sensory input channels. Dendritic integration of these afferent signals is critical in determining the amplitude and time course of the neurons' output signals. As of yet, little is known about the spatial and temporal organization of...

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

authors： Varga Z,Jia H,Sakmann B,Konnerth A

更新日期：2011-09-13 00:00:00

abstract：:The relative abundance of individual proteins shared among clones of lymphocytes provides a meaningful basis for cellular classification. Twelve clones of T cells (obtained by limiting dilution) were analyzed by two-dimensional gel electrophoresis for polypeptide content and then evaluated by the computational techniq...

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

authors： Lefkovits I,Kuhn L,Valiron O,Merle A,Kettman J

更新日期：1988-05-01 00:00:00

abstract：:Amphibians are a bellwether for environmental degradation, even in natural ecosystems such as Yellowstone National Park in the western United States, where species have been actively protected longer than anywhere else on Earth. We document that recent climatic warming and resultant wetland desiccation are causing sev...

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

authors： McMenamin SK,Hadly EA,Wright CK

更新日期：2008-11-04 00:00:00

abstract：:Simulations with a regional chemical transport model show that anthropogenic emissions of volatile organic compounds and nitrogen oxides (NO(x) = NO + NO(2)) lead to a dramatic diurnal variation of surface ozone (O(3)) in Houston, Texas. During the daytime, photochemical oxidation of volatile organic compounds catalyz...

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

authors： Zhang R,Lei W,Tie X,Hess P

更新日期：2004-04-27 00:00:00

abstract：:Phytosulfokine-alpha [PSK-alpha, Tyr(SO(3)H)-Ile-Tyr(SO(3)H)-Thr-Gln], a sulfated mitogenic peptide found in plants, strongly promotes proliferation of plant cells in culture at very low concentrations. Oryza sativa PSK (OsPSK) cDNA encoding a PSK-alpha precursor has been isolated. The cDNA is 725 base pairs long, and...

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

authors： Yang H,Matsubayashi Y,Nakamura K,Sakagami Y

更新日期：1999-11-09 00:00:00

abstract：:Neurons respond to sensory stimuli by altering the rate and temporal pattern of action potentials. These spike trains both encode and propagate information that guides behavior. Local inhibitory networks can affect the information encoded and propagated by neurons by altering correlations between different spike train...

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

authors： Giridhar S,Doiron B,Urban NN

更新日期：2011-04-05 00:00:00

abstract：:The configuration of the heme-carbonyl group upon binding of carbon monoxide to sperm whale myoglobin (Mb) in crystals is evaluated on the basis of infrared spectroscopic methods. Multiplets of the totally symmetric C-O stretching mode are observed for the heme-bound ligand near 1933, 1944, and 1967 cm-1, correspondin...

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

authors： Makinen MW,Houtchens RA,Caughey WS

更新日期：1979-12-01 00:00:00

abstract：:The members of the cytoplasmic 70-kDa heat shock protein family are involved in appropriate folding and trafficking of newly synthesized proteins in the cell. Hsc70, which is expressed constitutively, and Hsp70, the expression of which is stress- and heat shock-induced, are often considered to have similar cellular fu...

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

authors： Goldfarb SB,Kashlan OB,Watkins JN,Suaud L,Yan W,Kleyman TR,Rubenstein RC

更新日期：2006-04-11 00:00:00

abstract：:Genomic islands, large potentially mobile regions of bacterial chromosomes, are a major contributor to bacteria evolution. Here, we investigated the fitness cost and phenotypic differences between the bacterium Pseudomonas aeruginosa PAO1 and a derivative carrying one integrated copy of the clc element, a 103-kb genom...

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

authors： Gaillard M,Pernet N,Vogne C,Hagenbüchle O,van der Meer JR

更新日期：2008-05-13 00:00:00

abstract：:When assembled into 13--19S particles, the reovirus nonstructural protein sigma-NS selectively binds single-stranded RNAs. Sedimentation analyses combined with binding to nitrocellulose membrane filters showed that 1--2 pmol of reovirus mRNAs from the large, medium, or small size classes saturated in vitro the binding...

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

authors： Stamatos NM,Gomatos PJ

更新日期：1982-06-01 00:00:00

abstract：:We posit that feasible reversal of the growth of atmospheric CH(4) and other trace gases would provide a vital contribution toward averting dangerous anthropogenic interference with global climate. Such trace gas reductions may allow stabilization of atmospheric CO(2) at an achievable level of anthropogenic CO(2) emis...

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

authors： Hansen J,Sato M

更新日期：2004-11-16 00:00:00

abstract：:Block of Ca2+ currents by the dihydropyridine drug nitrendipine was studied in single canine ventricular cells by using the whole-cell variant of the patch clamp technique. When cells were held at depolarized membrane potentials at which Ca2+ currents were approximately equal to 70% inactivated, nitrendipine blocked C...

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

authors： Bean BP

更新日期：1984-10-01 00:00:00

abstract：:RNA-binding motif protein 4 (RBM4) plays a regulatory role in alternative splicing of precursor mRNA. We show here that cell stress such as arsenite exposure induces phosphorylation of RBM4 at serine 309 and also drives its cytoplasmic accumulation and targeting to stress granule via the MKK(3/6)-p38 signaling pathway...

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

authors： Lin JC,Hsu M,Tarn WY

更新日期：2007-02-13 00:00:00

abstract：:Modulation of cholesterol absorption in the intestine, the primary site of dietary cholesterol uptake in humans, can have profound clinical implications. We have undertaken a reverse genetic approach by disrupting putative cholesterol processing genes in zebrafish larvae by using morpholino (MO) antisense oligonucleot...

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

authors： Smart EJ,De Rose RA,Farber SA

更新日期：2004-03-09 00:00:00

abstract：:Through the agr quorum-sensing system, staphylococci secrete unique autoinducing peptides (AIPs) and detect their concentration via the AgrC transmembrane receptor, coordinating local bacterial population density with global changes in gene expression. Unique AIP and AgrC variants exist within and between species, and...

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

authors： Geisinger E,Muir TW,Novick RP

更新日期：2009-01-27 00:00:00

abstract：:The tumor suppressor protein p53 plays a crucial role in coordinating cellular processes, such as cell cycle arrest, apoptosis, and senescence. The nerve injury-induced protein 1 (Ninjurin1, Ninj1) is a homophilic adhesion molecule and involved in nerve regeneration. Interestingly, Ninj1 is found to be overexpressed i...

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

authors： Cho SJ,Rossi A,Jung YS,Yan W,Liu G,Zhang J,Zhang M,Chen X

更新日期：2013-06-04 00:00:00