Depletion layer dynamics of polyelectrolyte solutions under Poiseuille flow.

abstract：:To investigate the role of the myosin hinge region in muscle contraction, we examined the contraction characteristics and Mg-ATPase activity of glycerinated muscle fibers prepared from rabbit psoas in the presence and absence of polyclonal antibody directed against the subfragment 2 (S-2) region of myosin. The antibod...

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

authors： Sugi H,Kobayashi T,Gross T,Noguchi K,Karr T,Harrington WF

更新日期：1992-07-01 00:00:00

abstract：:ERK6, a mitogen-activated protein (MAP) kinase-related serine/threonine kinase, is highly expressed in human skeletal muscle and appears to function as a signal transducer during differentiation of myoblasts to myotubes. In transfected 293 cells, activation of the 45-kDa enzyme results in tyrosine-phosphorylated 46- a...

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

authors： Lechner C,Zahalka MA,Giot JF,Møller NP,Ullrich A

更新日期：1996-04-30 00:00:00

abstract：:Four major neutralizing regions of the human immunodeficiency virus type 1 (HIV-1) envelope glycoprotein were identified and characterized with a panel of 80 HIV-1 antibody-positive human sera. Levels of neutralizing antibodies against the HIV-1 strains IIIB, SF2, and RF were compared with reactivity in ELISAs against...

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

authors： Broliden PA,von Gegerfelt A,Clapham P,Rosen J,Fenyö EM,Wahren B,Broliden K

更新日期：1992-01-15 00:00:00

abstract：:The presence of nerve growth factor (NGF) mRNA and protein in the rat central nervous system is documented. Blot-hybridization analysis showed an abundance of NGF mRNA in the hippocampus, cerebral cortex, and olfactory bulb. Enzyme immunoassay confirmed significant levels of a NGF-like protein in the hippocampus and c...

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

authors： Whittemore SR,Ebendal T,Lärkfors L,Olson L,Seiger A,Strömberg I,Persson H

更新日期：1986-02-01 00:00:00

abstract：:Spontaneous cross-linking in vitro, during incubation of purified collagen in nonstriated and native type fibrils, was studied to elucidate the relationship between intra and intermolecular cross-links. In nonbanded fibrils, the aldol condensation products of two allysyl residues, previously shown to constitute the in...

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

authors： Kang AH,Gross J

更新日期：1970-11-01 00:00:00

abstract：:Fast axoplasmic transport was studied in dorsal root ganglion cells of the cat. Proteins carried in the fast axoplasmic flow were labeled after an intraganglionic injection of (L)-[4,5-(3)H]leucine. The rate of transport was 380 +/- 26 mm/day in both the central and peripheral branches of the bifurcating axons that ar...

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

authors： Anderson LE,McClure WO

更新日期：1973-05-01 00:00:00

abstract：:Picomole amounts of oligodeoxynucleotides [polydeoxyadenylic acids, (dA)40-60] were baseline resolved and analyzed in less than 8 min by high-performance capillary electrophoresis with polyacrylamide gels. In addition, fast analysis of a crude 70-mer oligodeoxynucleotide and a slab gel-purified 99-mer oligodeoxynucleo...

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

authors： Cohen AS,Najarian DR,Paulus A,Guttman A,Smith JA,Karger BL

更新日期：1988-12-01 00:00:00

abstract：:Protein phosphorylation plays a key role in vasopressin signaling in the renal-collecting duct. Large-scale identification and quantification of phosphorylation events triggered by vasopressin is desirable to gain a comprehensive systems-level understanding of this process. We carried out phosphoproteomic analysis of ...

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

authors： Hoffert JD,Pisitkun T,Wang G,Shen RF,Knepper MA

更新日期：2006-05-02 00:00:00

abstract：:MAD2 inhibits the anaphase-promoting complex when chromosomes are unattached to the mitotic spindle. It acts as a tumor suppressor gene because MAD2+/-cells enter anaphase early and display chromosome instability, leading to the formation of lung tumors in mice. Complete MAD2 inactivation has not been identified in hu...

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

authors： Michel L,Diaz-Rodriguez E,Narayan G,Hernando E,Murty VV,Benezra R

更新日期：2004-03-30 00:00:00

abstract：:C-tail-anchored (TA) proteins often require a transmembrane domain of moderate hydrophobicity to maintain their endoplasmic reticulum residence, but the suggested role of protein-lipid interactions in this phenomenon has not been established. Here, we studied the interaction of TA proteins with lipids by differential ...

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

authors： Ceppi P,Colombo S,Francolini M,Raimondo F,Borgese N,Masserini M

更新日期：2005-11-08 00:00:00

abstract：:The origins and consequences of a regulatory T cell (Treg) disorder in systemic lupus erythematosus (SLE) are poorly understood. In the (NZBxNZW) F(1) mouse model of lupus, we found that CD4(+)Foxp3(+) Treg failed to maintain a competitive pool size in the peripheral lymphoid organs resulting in a progressive homeosta...

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

authors： Humrich JY,Morbach H,Undeutsch R,Enghard P,Rosenberger S,Weigert O,Kloke L,Heimann J,Gaber T,Brandenburg S,Scheffold A,Huehn J,Radbruch A,Burmester GR,Riemekasten G

更新日期：2010-01-05 00:00:00

abstract：:Mannose-labeled glycopeptides from the surface of growing and nongrowing human diploid cells (KL-2) were separated into neutral glycopeptides and acidic glycopeptides by paper electrophoresis. Growth-dependent alterations occurred in oligomannosyl cores in the neutral glycopeptides; namely, the neutral glycopeptides f...

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

authors： Ceccarini C,Muramatsu T,Tsang J,Atkinson PH

更新日期：1975-08-01 00:00:00

abstract：:Genetic and biochemical studies have revealed that the 5' noncoding region of poliovirus mediates translation of the viral mRNA by an unusual mechanism involving entry of ribosomes in internal sequences of mRNA molecules. We have found that mRNAs bearing the 5' noncoding region of poliovirus were translated at an enha...

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

authors： Hambidge SJ,Sarnow P

更新日期：1992-11-01 00:00:00

abstract：:We have demonstrated that the entire murine N-myc gene and the sequences necessary for its expression in human neuroblastoma cells are contained within a 7.4-kilobase murine genomic clone. The complete nucleotide sequence of this gene reveals a number of striking similarities and differences when compared to the relat...

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

authors： DePinho RA,Legouy E,Feldman LB,Kohl NE,Yancopoulos GD,Alt FW

更新日期：1986-03-01 00:00:00

abstract：:Noniridescent coloration by the spongy keratin in parrot feather barbs has fascinated scientists. Nonetheless, its ultimate origin remains as yet unanswered, and a quantitative structural and optical description is still lacking. Here we report on structural and optical characterizations and numerical simulations of t...

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

authors： Yin H,Dong B,Liu X,Zhan T,Shi L,Zi J,Yablonovitch E

更新日期：2012-07-03 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：:The functional architecture of mammalian visual cortex has been elucidated in impressive detail by experimental work of the past 20-25 years. The origin of many of the salient features of this architecture, however, has remained unexplained. This paper is the first of three (the others will appear in subsequent issues...

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

authors： Linsker R

更新日期：1986-10-01 00:00:00

abstract：:Proopiomelanocortin (POMC), a major pituitary product, is also present in the adult mouse testis. We have shown previously that POMC mRNAs are most abundant in a subpopulation of Leydig cells associated with tubules in specific stages of the cycle of the seminiferous epithelium. In the present study, we examined the e...

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

authors： Gizang-Ginsberg E,Wolgemuth DJ

更新日期：1987-03-01 00:00:00

abstract：:A biological membrane is conceptualized as a system in which membrane proteins are naturally matched to the equilibrium thickness of the lipid bilayer. Cholesterol, in addition to lipid composition, has been suggested to be a major regulator of bilayer thickness in vivo because measurements in vitro have shown that ch...

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

authors： Mitra K,Ubarretxena-Belandia I,Taguchi T,Warren G,Engelman DM

更新日期：2004-03-23 00:00:00

abstract：:The cat-86 gene in plasmid pPL603 specifies chloramphenicol acetyltransferase (CAT) and is selectively expressed in Bacillus subtilis at a stage in sporulation in which internal spores are first observed (approximately T8). The gene is unexpressed in vegetatively growing cells. cat-86 expression and spore formation ar...

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

authors： Mongkolsuk S,Lovett PS

更新日期：1984-06-01 00:00:00

abstract：:Agricultural foods and technologies are thought to have eased the mechanical demands of diet-how often or how hard one had to chew-in human populations worldwide. Some evidence suggests correspondingly worldwide changes in skull shape and form across the agricultural transition, although these changes have proved diff...

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

authors： Katz DC,Grote MN,Weaver TD

更新日期：2017-08-22 00:00:00

abstract：:The electrical block to fertilization of sea urchin eggs can be overcome by very brief periods of inside-negative egg membrane potential. Lytechinus pictus eggs whose membrane potentials have been clamped at +15 mV cannot be fertilized. If the membrane potential is repolarized to inside-negative voltages for a brief i...

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

authors： Shen SS,Steinhardt RA

更新日期：1984-03-01 00:00:00

abstract：:Development of type 1 diabetes in the nonobese diabetic (NOD) mouse is preceded by an immune cell infiltrate in the pancreatic islets. The exact role of the attracted cells is still poorly understood. Chemokine CCL2/MCP-1 is known to attract CCR2(+) monocytes and dendritic cells (DCs). We have previously shown that tr...

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

authors： Kriegel MA,Rathinam C,Flavell RA

更新日期：2012-02-28 00:00:00

abstract：:Phosphatidylinositol 4,5-bisphosphate (PIP2) is an important cellular effector whose functions include the regulation of ion channels and membrane trafficking. Aberrant PIP2 metabolism has also been implicated in a variety of human disease states, e.g., cancer and diabetes. Here we report that familial Alzheimer's dis...

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

authors： Landman N,Jeong SY,Shin SY,Voronov SV,Serban G,Kang MS,Park MK,Di Paolo G,Chung S,Kim TW

更新日期：2006-12-19 00:00:00

abstract：:The ability of specific gangliosides to function as host cell receptors for Sendai virus was investigated by using Madin-Darby bovine kidney cells which become resistant to infection upon treatment with Vibrio cholerae sialidase. Sialidase-treated cells were incubated for 20 min at 37 degrees C with individual, highly...

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

authors： Markwell MA,Svennerholm L,Paulson JC

更新日期：1981-09-01 00:00:00

abstract：:The hydrodynamic properties of the detergent-solubilized, terminal membrane complex of serum complement components C5-C9 [C5b-9(m)] were studied to obtain an estimate of its molecular weight. In a solution of Triton X-100/deoxycholate, the protein complex binds 17% Triton X-100 and 11% deoxycholate by weight. The sedi...

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

authors： Bhakdi S,Tranum-Jensen J

更新日期：1981-03-01 00:00:00

abstract：:Assessments of the importance of different routes of HIV-1 (HIV) transmission are vital for prioritization of control efforts. Lack of consistent direct data and large uncertainty in the risk of HIV transmission from HIV-contaminated injections has made quantifying the proportion of transmission caused by contaminated...

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

authors： White RG,Ben SC,Kedhar A,Orroth KK,Biraro S,Baggaley RF,Whitworth J,Korenromp EL,Ghani A,Boily MC,Hayes RJ

更新日期：2007-06-05 00:00:00

abstract：:Parasponia, a woody member of the elm family, is the only nonlegume genus whose members are known to form an effective nitrogen-fixing symbiosis with a Rhizobium species. The bacterial strain RP501 is a slow-growing strain of Rhizobium isolated from Parasponia nodules. Strain RP501 also nodulates the legumes siratro (...

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

authors： Marvel DJ,Kuldau G,Hirsch A,Richards E,Torrey JG,Ausubel FM

更新日期：1985-09-01 00:00:00

abstract：:Type I and type III IFNs bind to different cell-surface receptors but induce identical signal transduction pathways, leading to the expression of antiviral host effector molecules. Despite the fact that type III IFN (IFN-λ) has been shown to predominantly act on mucosal organs, in vivo infection studies have failed to...

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

authors： Pott J,Mahlakõiv T,Mordstein M,Duerr CU,Michiels T,Stockinger S,Staeheli P,Hornef MW

更新日期：2011-05-10 00:00:00

abstract：:The reconstruction of phylogenetic trees from DNA and protein sequences is confounded by unequal rate effects. These effects can group rapidly evolving taxa with other rapidly evolving taxa, whether or not they are genealogically related. All algorithms are sensitive to these effects whenever the assumptions on which ...

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

authors： Lake JA

更新日期：1994-02-15 00:00:00