Nitrate storage and retrieval in Beta vulgaris: Effects of nitrate and chloride on proton gradients in tonoplast vesicles.

abstract：:Mass-independent isotope fractionations driven by differences in volumes and shapes of nuclei (the field shift effect) are known in several elements and are likely to be found in more. All-electron relativistic electronic structure calculations can predict this effect but at present are computationally intensive and l...

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

authors： Schauble EA

更新日期：2013-10-29 00:00:00

abstract：:Aspirin (ASA) triggers a switch in the biosynthesis of lipid mediators, inhibiting prostanoid production and initiating 15-epi-lipoxin generation through the acetylation of cyclooxygenase II. These aspirin-triggered lipoxins (ATL) may mediate some of ASA's beneficial actions and therefore are of interest in the search...

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

authors： Clish CB,O'Brien JA,Gronert K,Stahl GL,Petasis NA,Serhan CN

更新日期：1999-07-06 00:00:00

abstract：:(3)H-actinomycin D, a guanine-binding agent, labels fixed human chromosomes nonrandomly. Actinomycin D added in G2 inhibits secondary constrictions and breaks chromosomes. There is some tendency for label to be concentrated at the ends of chromosomes and near the centromere. Labeling with (3)H-thymidine in the late st...

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

authors： Miles CP

更新日期：1970-03-01 00:00:00

abstract：:Prions are infectious proteins that encipher biological information within their conformations; variations in these conformations dictate different prion strains. Toward elucidating the molecular language of prion protein (PrP) conformations, we produced an array of recombinant PrP amyloids with varying conformational...

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

authors： Colby DW,Giles K,Legname G,Wille H,Baskakov IV,DeArmond SJ,Prusiner SB

更新日期：2009-12-01 00:00:00

abstract：:Contemporary climate change is characterized both by increasing mean temperature and increasing climate variability such as heat waves, storms, and floods. How populations and communities cope with such climatic extremes is a question central to contemporary ecology and biodiversity conservation. Previous work has sho...

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

authors： Reusch TB,Ehlers A,Hämmerli A,Worm B

更新日期：2005-02-22 00:00:00

abstract：:Mechanisms that enabled primitive cell membranes to self-reproduce have been discussed based on the physicochemical properties of fatty acids; however, there must be a transition to modern cell membranes composed of phospholipids [Budin I, Szostak JW (2011) Proc Natl Acad Sci USA 108:5249-5254]. Thus, a growth-divisio...

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

authors： Terasawa H,Nishimura K,Suzuki H,Matsuura T,Yomo T

更新日期：2012-04-17 00:00:00

abstract：:Filamentous actin (F-actin) cytoskeletal remodeling is critical for glucose-stimulated insulin secretion (GSIS) in pancreatic β-cells, and its dysregulation causes type 2 diabetes. The adaptor protein APPL1 promotes first-phase GSIS by up-regulating soluble N-ethylmaleimide-sensitive factor attachment protein receptor...

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

authors： Wang B,Lin H,Li X,Lu W,Kim JB,Xu A,Cheng KKY

更新日期：2020-11-10 00:00:00

abstract：:The formation of heparan sulfate occurs within the lumen of the endoplasmic reticulum-Golgi complex-trans-Golgi network by the concerted action of several glycosyltransferases, an epimerase, and multiple sulfotransferases. In this report, we have examined the location and interaction of tagged forms of five of the bio...

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

authors： Pinhal MA,Smith B,Olson S,Aikawa J,Kimata K,Esko JD

更新日期：2001-11-06 00:00:00

abstract：:Influenza A virus (IAV) has a segmented genome, which (i) allows for exchange of gene segments in coinfected cells, termed reassortment, and (ii) necessitates a selective packaging mechanism to ensure incorporation of a complete set of segments into virus particles. Packaging signals serve as segment identifiers and e...

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

authors： White MC,Tao H,Steel J,Lowen AC

更新日期：2019-03-05 00:00:00

abstract：:We provide evidence that citrate anions bridge between mineral platelets in bone and hypothesize that their presence acts to maintain separate platelets with disordered regions between them rather than gradual transformations into larger, more ordered blocks of mineral. To assess this hypothesis, we take as a model fo...

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

authors： Davies E,Müller KH,Wong WC,Pickard CJ,Reid DG,Skepper JN,Duer MJ

更新日期：2014-04-08 00:00:00

abstract：:To improve the efficiency of liposome-mediated DNA transfer as a tool for gene therapy, we have developed a fusigenic liposome vector based on principles of viral cell fusion. The fusion proteins of hemagglutinating virus of Japan (HVJ; also Sendai virus) are complexed with liposomes that encapsulate oligodeoxynucleot...

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

authors： Dzau VJ,Mann MJ,Morishita R,Kaneda Y

更新日期：1996-10-15 00:00:00

abstract：:Helicases are molecular motor enzymes that unwind and translocate nucleic acids. One of the central questions regarding helicase activity is whether the process of coupling ATP hydrolysis to DNA unwinding requires an oligomeric form of the enzyme. We have applied a pre-steady-state kinetics approach to address this qu...

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

authors： Nanduri B,Byrd AK,Eoff RL,Tackett AJ,Raney KD

更新日期：2002-11-12 00:00:00

abstract：:The primary structure of proteins S1, the largest protein component of the Escherichia coli ribosome, has been elucidated by determining the amino acid sequence of the protein (from E. coli MRE600) and the nucleotide sequence of the S1 gene (rpsA, of a K-12 strain). The two methods gave results in perfect agreement ex...

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

authors： Schnier J,Kimura M,Foulaki K,Subramanian AR,Isono K,Wittmann-Liebold B

更新日期：1982-02-01 00:00:00

abstract：:Lipid-mediated signaling events regulate many cellular processes. Investigations of the complex underlying mechanisms are difficult because several different methods need to be used under varying conditions. Here we introduce multifunctional lipid derivatives to study lipid metabolism, lipid-protein interactions, and ...

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

authors： Höglinger D,Nadler A,Haberkant P,Kirkpatrick J,Schifferer M,Stein F,Hauke S,Porter FD,Schultz C

更新日期：2017-02-14 00:00:00

abstract：:Illumination of a system consisting of a vertical tube containing an unstirred homogeneous suspension of thylakoids in an imposed linear concentration gradient of an electron acceptor, 2,6-dichloroindophenol, gave rise to a one-dimensional banded pattern of the acceptor that evolved in a time-dependent manner. The spa...

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

authors： Aon M,Thomas D,Hervagault JF

更新日期：1989-01-01 00:00:00

abstract：:Efficient 3'-end processing of cell cycle-regulated mammalian histone premessenger RNAs (pre-mRNAs) requires an upstream stem-loop and a histone downstream element (HDE) that base pairs with the U7 small ribonucleoprotein. Insertions between these elements have two effects: the site of cleavage moves in concert with t...

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

authors： Scharl EC,Steitz JA

更新日期：1996-12-10 00:00:00

abstract：:The reactions catalyzed by Mo enzymes each find the product differing from the substrate by two electrons and two protons (or some multiple thereof). The coordination chemistry of Mo suggests that there is a distinct relationship between acid-base and redox properties of Mo complexes, and that a coupled electron-proto...

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

authors： Stiefel EI

更新日期：1973-04-01 00:00:00

abstract：:Although the left and right human cerebral hemispheres differ both functionally and anatomically, little is known about the environmental or genetic factors that govern central nervous system asymmetry. Nevertheless, cerebral asymmetry is strongly correlated with handedness, and handedness does have a significant gene...

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

authors： Geschwind DH,Miller BL,DeCarli C,Carmelli D

更新日期：2002-03-05 00:00:00

abstract：:Adrenocortical carcinomas (ACCs) are rare and highly malignant cancers associated with poor survival of patients. Currently, mitotane, a nonspecific derivative of the pesticide DDT (1,1-(dichlorobiphenyl)-2,2-dichloroethane), is used as the standard treatment, but its mechanism of action in ACCs remains elusive. Here ...

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

authors： Belavgeni A,Bornstein SR,von Mässenhausen A,Tonnus W,Stumpf J,Meyer C,Othmar E,Latk M,Kanczkowski W,Kroiss M,Hantel C,Hugo C,Fassnacht M,Ziegler CG,Schally AV,Krone NP,Linkermann A

更新日期：2019-10-29 00:00:00

abstract：:The phosphoprotein (NS) of vesicular stomatitis virus is an indispensable subunit of the virion-associated RNA polymerase (L). NS consists of a highly acidic NH2-terminal domain and a basic COOH-terminal domain. Unlike the latter, the amino acid sequences of the NH2-terminal regions are highly dissimilar among differe...

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

authors： Chattopadhyay D,Banerjee AK

更新日期：1988-11-01 00:00:00

abstract：:Quaking(viable) (qk(v)) is a recessive neurological mouse mutation with severe dysmyelination of the CNS and spermiogenesis failure. The molecular lesion in the qk(v) mutant is a deletion of approximately 1 Mb on mouse chromosome 17 that alters the expression of the qk gene in oligodendrocytes. Complementation analysi...

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

authors： Lorenzetti D,Bishop CE,Justice MJ

更新日期：2004-06-01 00:00:00

abstract：:Programmed cell death (apoptosis) is a normal physiological process, which could in principle be manipulated to play an important role in cancer therapy. The key importance of p53 expression in the apoptotic response to DNA-damaging agents has been stressed because mutant or deleted p53 is so common in most kinds of c...

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

authors： Xu C,Meikrantz W,Schlegel R,Sager R

更新日期：1995-08-15 00:00:00

abstract：:Ultraviolet irradiation of the [3H]colchicine-tubulin complex leads to direct photolabeling of tubulin with low but practicable efficiency. The bulk (70% to greater than 90%) of the labeling occurs on beta-tubulin and appears early after irradiation, whereas alpha-tubulin is labeled later. The labeling ratio of beta-t...

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

authors： Wolff J,Knipling L,Cahnmann HJ,Palumbo G

更新日期：1991-04-01 00:00:00

abstract：:Domestic animals can be cloned using techniques such as embryo splitting and nuclear transfer to produce genetically identical individuals. Although embryo splitting is limited to the production of only a few identical individuals, nuclear transfer of donor nuclei into recipient oocytes, whose own nuclear DNA has been...

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

authors： Keefer CL

更新日期：2015-07-21 00:00:00

abstract：:The molecular mechanism of desensitization of soluble guanylyl cyclase (sGC), the NO receptor, has long remained unresolved. Posttranslational modification and redox state have been postulated to affect sGC sensitivity to NO but evidence has been lacking. We now show that sGC can be S-nitrosylated in primary aortic sm...

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

authors： Sayed N,Baskaran P,Ma X,van den Akker F,Beuve A

更新日期：2007-07-24 00:00:00

abstract：:Employing a cell-free chromatin transcription system that recapitulates progesterone receptor (PR)-mediated transcription in vivo, we have investigated further the coactivator functions of steroid receptor coactivator-1 (SRC-1) in terms of its functional domains as well as cooperation with other coactivators in PR tra...

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

authors： Liu Z,Wong J,Tsai SY,Tsai MJ,O'Malley BW

更新日期：2001-10-23 00:00:00

abstract：:The biosynthesis of fibronectin during the in vivo development of matrix-induced endochondral bone was investigated by using [35S]methionine in rats. The dmineralized bone matrix that was implanted subcutaneously to induce local bone formation bound circulating fibronectin. This may be an important initial requirement...

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

authors： Weiss RE,Reddi AH

更新日期：1980-04-01 00:00:00

abstract：:Unlike normal cells, malignant rat and two simian virus 40-transformed human cell lines can neither grow nor survive in B12-and folate-supplemented media in which methionine is replaced by homocysteine. Yet three lines of evidence indicate that the malignant and transformed cells synthesize large amounts of methionine...

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

authors： Hoffman RM,Erbe RW

更新日期：1976-05-01 00:00:00

abstract：:We have investigated the biochemical basis for negative regulation of interleukin 2 receptor alpha-chain (IL-2R alpha) gene expression. Transient transfection studies employing internally deleted forms of the IL-2R alpha promoter localized a negative regulatory element (NRE) between nucleotides -400 and -368 relative ...

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

authors： Smith MR,Greene WC

更新日期：1989-11-01 00:00:00

abstract：:Plasma growth hormone (GH) profiles are sexually differentiated in many species and regulate the sex-dependence of peripubescent growth rates and liver function, including steroid hydroxylase cytochrome P450 expression, by mechanisms that are poorly understood. By use of an external pump to deliver to hypophysectomize...

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

authors： Waxman DJ,Pampori NA,Ram PA,Agrawal AK,Shapiro BH

更新日期：1991-08-01 00:00:00