Primary photochemical event in vision: proton translocation.

abstract：:UV-sensitive syndrome (UVsS) is a rare autosomal recessive disorder characterized by photosensitivity and mild freckling but without neurological abnormalities or skin tumors. UVsS cells show UV hypersensitivity and defective transcription-coupled DNA repair of UV damage. It was suggested that UVsS does not belong to ...

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

authors： Horibata K,Iwamoto Y,Kuraoka I,Jaspers NG,Kurimasa A,Oshimura M,Ichihashi M,Tanaka K

更新日期：2004-10-26 00:00:00

abstract：:Escherichia coli cells lacking the histone-like protein HU form filaments and have an abnormal number of anucleate cells. Furthermore, their phenotype resembles that of rfa mutants, the well-characterized deep-rough phenotype, as they show an enhanced permeability that renders them hypersensitive to chloramphenicol, n...

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

authors： Painbeni E,Caroff M,Rouviere-Yaniv J

更新日期：1997-06-24 00:00:00

abstract：:Studies in vitro have established that free tryptophan induces tna operon expression by binding to the ribosome that has just completed synthesis of TnaC-tRNA(Pro), the peptidyl-tRNA precursor of the leader peptide of this operon. Tryptophan acts by inhibiting Release Factor 2-mediated cleavage of this peptidyl-tRNA a...

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

authors： Cruz-Vera LR,Gong M,Yanofsky C

更新日期：2006-03-07 00:00:00

abstract：:Clinically available drugs active against Epstein-Barr virus (EBV) and other human herpesviruses are limited to those targeting viral DNA replication. To identify compounds directed against other steps in the viral life cycle, we searched for drugs active against the EBV SM protein, which is essential for infectious v...

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

authors： Verma D,Thompson J,Swaminathan S

更新日期：2016-03-29 00:00:00

abstract：:In the realm of protein-protein interactions, the assembly process of homooligomers plays a fundamental role because the majority of proteins fall into this category. A comprehensive understanding of this multistep process requires the characterization of the driving molecular interactions and the transient intermedia...

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

authors： Barducci A,Bonomi M,Prakash MK,Parrinello M

更新日期：2013-12-03 00:00:00

abstract：:Protein misfolding and aggregation cause serious degenerative conditions such as Alzheimer's, Parkinson, and prion diseases. Damage to membranes is thought to be one of the mechanisms underlying cellular toxicity of a range of amyloid assemblies. Previous studies have indicated that amyloid fibrils can cause membrane ...

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

authors： Milanesi L,Sheynis T,Xue WF,Orlova EV,Hellewell AL,Jelinek R,Hewitt EW,Radford SE,Saibil HR

更新日期：2012-12-11 00:00:00

abstract：:To identify genetic factors that interact with social environments to impact human health, we used a bioinformatic strategy that couples expression array-based detection of environmentally responsive transcription factors with in silico discovery of regulatory polymorphisms to predict genetic loci that modulate transc...

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

authors： Cole SW,Arevalo JM,Takahashi R,Sloan EK,Lutgendorf SK,Sood AK,Sheridan JF,Seeman TE

更新日期：2010-03-23 00:00:00

abstract：:Microtubule formation from lamb brain tubulin isolated by affinity chromatography and freed of exchangeable nucleotide requires GTP for maximal rate and extent of polymerization. The nucleotide analogs guanylylmethylenediphosphate and guanylylimidodiphosphate fail to replace GTP; in addition, neither the presence of m...

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

authors： Maccioni R,Seeds NW

更新日期：1977-02-01 00:00:00

abstract：:Synthetic pheomelanins from enzymic oxidation of the 3,4-dihydroxyphenylalanine (dopa) derivative 5-S-cysteinyldopa have been examined by ESR spectroscopy. These alkalisoluble polymers contain a novel kind of free radical that is spectroscopically distinct from that found in eumelanins. Delocalization of the unpaired ...

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

authors： Sealy RC,Hyde JS,Felix CC,Menon IA,Prota G,Swartz HM,Persad S,Haberman HF

更新日期：1982-05-01 00:00:00

abstract：:In order to understand the functions of simian virus 40 genes, permissive cells (TC7) were infected with mutants temperature sensitive in the complementation groups A, B, C, BC, and D at permissive and nonpermissive temperatures. Cells were examined for the localization of viral polypeptide antigens by immunofluoresce...

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

authors： Kasamatsu H,Nehorayan A

更新日期：1979-06-01 00:00:00

abstract：:Trimeric class I virus fusion proteins undergo a series of conformational rearrangements that leads to the association of C- and N-terminal heptad repeat domains in a "trimer-of-hairpins" structure, facilitating the apposition of viral and cellular membranes during fusion. This final fusion hairpin structure is sustai...

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

authors： Cianci C,Langley DR,Dischino DD,Sun Y,Yu KL,Stanley A,Roach J,Li Z,Dalterio R,Colonno R,Meanwell NA,Krystal M

更新日期：2004-10-19 00:00:00

abstract：:The X gene product encoded by the hepatitis B virus, termed pX, is a promiscuous transactivator of a variety of viral and cellular genes under the control of diverse cis-acting elements. Although pX does not appear to directly bind DNA, pX-responsive elements include the NF-kappa B, AP-1, and CRE (cAMP response elemen...

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

authors： Williams JS,Andrisani OM

更新日期：1995-04-25 00:00:00

abstract：:A discussion of the expected mechanism of radical reduction of carbonyl compounds by dihydroflavin as it relates to the structure of the carbonyl compound is provided. Factors which must be taken into account are the free energies of formation of the radical anions (CR2O), THE ACIDITY OF THE CONJUGATE ACID OF THE CARB...

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

authors： Williams RF,Shinkai S,Bruice TC

更新日期：1975-05-01 00:00:00

abstract：:The Arabidopsis DEMETER (DME) DNA glycosylase demethylates the maternal genome in the central cell prior to fertilization and is essential for seed viability. DME preferentially targets small transposons that flank coding genes, influencing their expression and initiating plant gene imprinting. DME also targets interg...

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

authors： Zhang C,Hung YH,Rim HJ,Zhang D,Frost JM,Shin H,Jang H,Liu F,Xiao W,Iyer LM,Aravind L,Zhang XQ,Fischer RL,Huh JH,Hsieh TF

更新日期：2019-08-27 00:00:00

abstract：:The pathways that allow quiescent disseminated cancer cells to survive during prolonged dormancy periods are unknown. Here, we identify the transcription factor ATF6alpha as a pivotal survival factor for quiescent but not proliferative squamous carcinoma cells. ATF6alpha is essential for the adaptation of dormant cell...

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

authors： Schewe DM,Aguirre-Ghiso JA

更新日期：2008-07-29 00:00:00

abstract：:Single-cell RNA sequencing (scRNA-seq) enables the quantification of each gene's expression distribution across cells, thus allowing the assessment of the dispersion, nonzero fraction, and other aspects of its distribution beyond the mean. These statistical characterizations of the gene expression distribution are cri...

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

authors： Wang J,Huang M,Torre E,Dueck H,Shaffer S,Murray J,Raj A,Li M,Zhang NR

更新日期：2018-07-10 00:00:00

abstract：:Cytochrome C is a mitochondrial protein that induces apoptosis when released into the cytosol or when added to cell-free extracts. Here we show that cells that overexpress the Bcl-2-related protein Bcl-xL fail to accumulate cytosolic cytochrome C or undergo apoptosis in response to genotoxic stress. Coimmunoprecipitat...

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

authors： Kharbanda S,Pandey P,Schofield L,Israels S,Roncinske R,Yoshida K,Bharti A,Yuan ZM,Saxena S,Weichselbaum R,Nalin C,Kufe D

更新日期：1997-06-24 00:00:00

abstract：:The hallmark of the menstrual cycle is extensive steroid-dependent tissue turnover. Estrogen mediates endometrial cell growth and structural remodeling, whereas progesterone suppresses estrogen-dependent proliferation and promotes cellular differentiation. In nonfertile cycles, tissue degradation and menstruation occu...

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

authors： Osteen KG,Rodgers WH,Gaire M,Hargrove JT,Gorstein F,Matrisian LM

更新日期：1994-10-11 00:00:00

abstract：:We examined the distributions of short tandemly repeated DNAs (microsatellites) in nine complete microbial genomes (Saccharomyces cerevisiae, Archaeoglobus fulgidus, Escherichia coli, Haemophilus influenzae, Helicobacter pylori, Methanococcus jannaschii, Mycoplasma pneumoniae, M. genitalium, and Synechocystis PCC6803....

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

authors： Field D,Wills C

更新日期：1998-02-17 00:00:00

abstract：:DNA hybridization was used to compare representatives of the major groups of marsupials and a eutherian outgroup. Because of the large genetic distances separating marsupial families, trees were calculated from normalized percentages of hybridization; thermal-melting statistics, however, gave identical topologies for ...

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

authors： Kirsch JA,Dickerman AW,Reig OA,Springer MS

更新日期：1991-12-01 00:00:00

abstract：:In feeding, aphids inject saliva into plant tissues, gaining access to phloem sap and eliciting (and sometimes overcoming) plant responses. We are examining the involvement, in this aphid-plant interaction, of individual aphid proteins and enzymes, as identified in a salivary gland cDNA library. Here, we focus on a sa...

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

authors： Mutti NS,Louis J,Pappan LK,Pappan K,Begum K,Chen MS,Park Y,Dittmer N,Marshall J,Reese JC,Reeck GR

更新日期：2008-07-22 00:00:00

abstract：:Thiamin diphosphate, the vitamin B1 coenzyme, plays critical roles in fundamental metabolic pathways that require acyl carbanion equivalents. Studies on chemical models and enzymes had suggested that these carbanions are resonance-stabilized as enamines. A crystal structure of this intermediate in pyruvate oxidase at ...

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

authors： Meyer D,Neumann P,Koers E,Sjuts H,Lüdtke S,Sheldrick GM,Ficner R,Tittmann K

更新日期：2012-07-03 00:00:00

abstract：:The BvgAS phosphorelay regulates ∼10% of the annotated genomes of Bordetella pertussis and Bordetella bronchiseptica and controls their infectious cycles. The hierarchical organization of the regulatory network allows the integration of contextual signals to control all or specific subsets of BvgAS-regulated genes. He...

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

authors： Ahuja U,Shokeen B,Cheng N,Cho Y,Blum C,Coppola G,Miller JF

更新日期：2016-03-01 00:00:00

abstract：:Agonist binding to the muscarinic receptor in rat cerebral cortex membranes was studied by using the neurotransmitter itself, [3H]acetylcholine [( 3H]AcCho). By using 10 microM atropine or oxotremorine to define specific binding, it was possible to demonstrate specific binding of [3H]AcCho that was sensitive to muscar...

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

authors： Gurwitz D,Kloog Y,Sokolovsky M

更新日期：1984-06-01 00:00:00

abstract：:Ventilator-induced diaphragmatic dysfunction (VIDD) refers to the diaphragm muscle weakness that occurs following prolonged controlled mechanical ventilation (MV). The presence of VIDD impedes recovery from respiratory failure. However, the pathophysiological mechanisms accounting for VIDD are still not fully understo...

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

authors： Matecki S,Dridi H,Jung B,Saint N,Reiken SR,Scheuermann V,Mrozek S,Santulli G,Umanskaya A,Petrof BJ,Jaber S,Marks AR,Lacampagne A

更新日期：2016-08-09 00:00:00

abstract：:To elucidate the means by which metabolic inhibition depolarizes cardiac cells, spontaneously beating chicken embryonic myocardial cell aggregates were voltage clamped during superfusion with 2,4-dinitrophenol and iodoacetic acid. In aggregates continuously clamped in the pacemaker potential range, abrupt exposure to ...

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

authors： Clusin WT

更新日期：1983-06-01 00:00:00

abstract：:Vascular endothelial cells (ECs) at arterial branches and curvatures experience disturbed blood flow and induce a quiescent-to-activated phenotypic transition of the adjacent smooth muscle cells (SMCs) and a subsequent smooth muscle hyperplasia. However, the mechanism underlying the flow pattern-specific initiation of...

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

authors： Zhu JJ,Liu YF,Zhang YP,Zhao CR,Yao WJ,Li YS,Wang KC,Huang TS,Pang W,Wang XF,Wang X,Chien S,Zhou J

更新日期：2017-08-01 00:00:00

abstract：:The basic helix-loop-helix transcriptional repressor Hairy-related transcription factor 2 (Hrt2) is expressed in ventricular, but not atrial, cardiomyocytes, and in endothelial and vascular smooth muscle cells. Mice homozygous for a null mutation of Hrt2 die perinatally from a spectrum of cardiac abnormalities, raisin...

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

authors： Xin M,Small EM,van Rooij E,Qi X,Richardson JA,Srivastava D,Nakagawa O,Olson EN

更新日期：2007-05-08 00:00:00

abstract：:Neurons in the cochlear nuclei of duck embryos become responsive to tonal stimuli in an orderly spatial and temporal sequence. Cells responding to lower frequencies are recorded before those responding to higher frequencies. Auditory neurons are spatially arranged according to their characteristic frequencies, indicat...

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

authors： Konishi M

更新日期：1973-06-01 00:00:00

abstract：:An ATP-hydrolyzing activity with the properties of a Mg(2+)-dependent (Na(+),K(+))-ATPase (ATP phosphohydrolase, EC 3.6.1.3) from a 20-fold purified plasma membrane fraction of the marine diatom, Nitzschia alba is described. The basal activity requires Mg(2+) and further stimulation by Na(+) or Na(+) plus K(+) is depe...

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

authors： Sullivan CW,Volcani BE

更新日期：1974-11-01 00:00:00