Accurately quantifying low-abundant targets amid similar sequences by revealing hidden correlations in oligonucleotide microarray data.

abstract：:In the Burmese python (Python molurus), the rapid up-regulation of gastrointestinal (GI) function and morphology after feeding, and subsequent down-regulation on completing digestion, are expected to be mediated by GI hormones and neuropeptides. Hence, we examined postfeeding changes in plasma and tissue concentration...

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

authors： Secor SM,Fehsenfeld D,Diamond J,Adrian TE

更新日期：2001-11-20 00:00:00

abstract：:Cells are exposed to changes in extracellular stimulus concentration that vary as a function of rate. However, how cells integrate information conveyed from stimulation rate along with concentration remains poorly understood. Here, we examined how varying the rate of stress application alters budding yeast mitogen-act...

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

authors： Johnson AN,Li G,Jashnsaz H,Thiemicke A,Kesler BK,Rogers DC,Neuert G

更新日期：2021-01-12 00:00:00

abstract：:Proteins fold through a variety of mechanisms. For a given protein, folding routes largely depend on the protein's stability and its native-state geometry, because the landscape is funneled. These ideas are corroborated for cytochrome c by using a coarse-grained topology-based model with a perfect funnel landscape tha...

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

authors： Weinkam P,Zong C,Wolynes PG

更新日期：2005-08-30 00:00:00

abstract：:The E1A gene of adenovirus type 5 encodes two major proteins of 289 and 243 amino acid residues, which are identical except that the larger protein has an internal stretch of 46 amino acids required for efficient trans-activation of early viral promoters. This domain contains a consensus zinc finger motif (Cys-Xaa2-Cy...

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

authors： Culp JS,Webster LC,Friedman DJ,Smith CL,Huang WJ,Wu FY,Rosenberg M,Ricciardi RP

更新日期：1988-09-01 00:00:00

abstract：:The ciliary epithelium in the eye consists of pigmented epithelial cells that express the α1β1 isoform of Na,K-ATPase and nonpigmented epithelial cells that express mainly the α2β3 isoform. In principle, a Na,K-ATPase inhibitor with selectivity for α2β3 that penetrates the cornea could effectively reduce intraocular p...

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

authors： Katz A,Tal DM,Heller D,Habeck M,Ben Zeev E,Rabah B,Bar Kana Y,Marcovich AL,Karlish SJ

更新日期：2015-11-03 00:00:00

abstract：:Chick calvaria labeled in vitro contain a triple-stranded collagen precursor that contains two pro alpha1 and one pro alpha2 chains. All chains contain cystine and are linked by S-S bonds. Ultracentrifugal analysis was used to measure the relative size of the disulfide-linked units. It is proposed that the S-S links h...

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

authors： Fessler LI,Burgeson RE,Morris NP,Fessler JH

更新日期：1973-10-01 00:00:00

abstract：:We have tried to find out why Ascaris hemoglobin has such an exceptionally high oxygen affinity (P50 approximately 0.004 mmHg; 1 mmHg = 133 Pa). Following Kloek et al., we have synthesized the N-terminal globin domain of Ascaris hemoglobin in Escherichia coli [Kloek, A. P., Yang, J., Mathews, F. S. & Goldberg, D. (199...

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

authors： De Baere I,Perutz MF,Kiger L,Marden MC,Poyart C

更新日期：1994-02-15 00:00:00

abstract：:Molecular modeling and two-dimensional NMR techniques enable us to identify structural features in the third variable region (V3) loop of the human immunodeficiency virus (HIV) surface glycoprotein gp120, in particular the principal neutralizing determinant (PND), that remain conserved despite the sequence variation. ...

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

authors： Fontenot JD,Gatewood JM,Mariappan SV,Pau CP,Parekh BS,George JR,Gupta G

更新日期：1995-01-03 00:00:00

abstract：:The delta-subspecies of protein kinase C (delta PKC) was purified to near homogeneity from the Triton X-100 extract of the rat brain particulate fraction by successive chromatographies on S-Sepharose fast flow, phenyl 5PW, heparin 5PW, hydroxyapatite, and Mono Q columns. The purified enzyme was a doublet with molecula...

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

authors： Ogita K,Miyamoto S,Yamaguchi K,Koide H,Fujisawa N,Kikkawa U,Sahara S,Fukami Y,Nishizuka Y

更新日期：1992-03-01 00:00:00

abstract：:A high-resolution compositional map of glass-forming ability (GFA) in the Ni-Cr-Nb-P-B system is experimentally determined along various compositional planes. GFA is shown to be a piecewise continuous function formed by intersecting compositional subsurfaces, each associated with a nucleation pathway for a specific cr...

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

authors： Na JH,Demetriou MD,Floyd M,Hoff A,Garrett GR,Johnson WL

更新日期：2014-06-24 00:00:00

abstract：:Human 15-lipoxygenase (h15-LO) is present on chromosome 17p13.3 in close proximity to the tumor-suppressor gene, p53. 15-LO is implicated in antiinflammation, membrane remodeling, and cancer development/metastasis. The murine BALB/c embryo fibroblast cell line, (10)1val, expresses p53 in mutant (mt) conformation when ...

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

authors： Kelavkar UP,Badr KF

更新日期：1999-04-13 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：:The skeletal remains of a diminutive small-brained hominin found in Late Pleistocene cave deposits on the island of Flores, Indonesia were assigned to a new species, Homo floresiensis [Brown P, et al. (2004) A new small-bodied hominin from the Late Pleistocene of Flores, Indonesia. Nature 431: 1055-1061]. A dramatical...

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

authors： Gordon AD,Nevell L,Wood B

更新日期：2008-03-25 00:00:00

abstract：:Recent genome-wide nucleosome mappings along with bioinformatics studies have confirmed that the DNA sequence plays a more important role in the collective organization of nucleosomes in vivo than previously thought. Yet in living cells, this organization also results from the action of various external factors like D...

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

authors： Milani P,Chevereau G,Vaillant C,Audit B,Haftek-Terreau Z,Marilley M,Bouvet P,Argoul F,Arneodo A

更新日期：2009-12-29 00:00:00

abstract：:Beckwith-Wiedemann syndrome (BWS) involves fetal overgrowth and predisposition to a wide variety of embryonal tumors of childhood. We have previously found that BWS is genetically linked to 11p15 and that this same band shows loss of heterozygosity in the types of tumors to which children with BWS are susceptible. How...

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

authors： Hoovers JM,Kalikin LM,Johnson LA,Alders M,Redeker B,Law DJ,Bliek J,Steenman M,Benedict M,Wiegant J,Lengauer C,Taillon-Miller P,Schlessinger D,Edwards MC,Elledge SJ,Ivens A,Westerveld A,Little P,Mannens M,Feinberg AP

更新日期：1995-12-19 00:00:00

abstract：:ALS is a terminal disease of motor neurons that is characterized by accumulation of proteinaceous deposits in affected cells. Pathological deposition of mutated Cu/Zn superoxide dismutase (SOD1) accounts for ∼20% of the familial ALS (fALS) cases. However, understanding the molecular link between mutation and disease h...

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

authors： Ivanova MI,Sievers SA,Guenther EL,Johnson LM,Winkler DD,Galaleldeen A,Sawaya MR,Hart PJ,Eisenberg DS

更新日期：2014-01-07 00:00:00

abstract：:Autopsy studies suggest that most aging men will develop lesions that, if detected clinically, would be diagnosed as prostate cancer (PCa). Most of these cancers are indolent and remain localized; however, a subset of PCa is aggressive and accounts for more than 27,000 deaths in the United States annually. Identificat...

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

authors： Xu J,Zheng SL,Isaacs SD,Wiley KE,Wiklund F,Sun J,Kader AK,Li G,Purcell LD,Kim ST,Hsu FC,Stattin P,Hugosson J,Adolfsson J,Walsh PC,Trent JM,Duggan D,Carpten J,Grönberg H,Isaacs WB

更新日期：2010-02-02 00:00:00

abstract：:The Xlim-1 gene is activated in the late blastula stage of Xenopus embryogenesis in the mesoderm, and its RNA product becomes concentrated in the Spemann organizer at early gastrula stage. A major regulator of early expression of Xlim-1 is activin or an activin-like signal. We report experiments aiming to identify the...

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

authors： Rebbert ML,Dawid IB

更新日期：1997-09-02 00:00:00

abstract：:Major histocompatibility complex (MHC) class II molecules displayed clustered patterns at the surfaces of T (HUT-102B2) and B (JY) lymphoma cells characterized by interreceptor distances in the micrometer range as detected by scanning force microscopy of immunogold-labeled antigens. Electron microscopy revealed that a...

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

authors： Jenei A,Varga S,Bene L,Mátyus L,Bodnár A,Bacsó Z,Pieri C,Gáspár R Jr,Farkas T,Damjanovich S

更新日期：1997-07-08 00:00:00

abstract：:A controversial topic in the recent climate modeling literature is the fashion in which metastable low-frequency regimes in the atmosphere occur despite nearly Gaussian statistics for these planetary waves. Here a simple 57-mode paradigm model for such metastable atmospheric regime behavior is introduced and analyzed ...

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

authors： Majda AJ,Franzke CL,Fischer A,Crommelin DT

更新日期：2006-05-30 00:00:00

abstract：:Saccharopolyspora erythraea makes erythromycin, an antibiotic commonly used in human medicine. Unusually, the erythromycin biosynthetic (ery) cluster lacks a pathway-specific regulatory gene. We isolated a transcriptional regulator of the ery biosynthetic genes from S. erythraea and found that this protein appears to ...

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

authors： Chng C,Lum AM,Vroom JA,Kao CM

更新日期：2008-08-12 00:00:00

abstract：:We have recently shown that the expression of nestin, the neural stem cell marker protein, is expressed in bulge-area stem cells of the hair follicle. We used transgenic mice with GFP expression driven by the nestin regulatory element [nestin-driven GFP (ND-GFP)]. The ND-GFP stem cells give rise to the outer-root shea...

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

authors： Amoh Y,Li L,Katsuoka K,Penman S,Hoffman RM

更新日期：2005-04-12 00:00:00

abstract：:Muscular dystrophy is a general term encompassing muscle disorders that cause weakness and wasting, typically leading to premature death. Membrane instability, as a result of a genetic disruption within the dystrophin-glycoprotein complex (DGC), is thought to induce myofiber degeneration, although the downstream mecha...

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

authors： Millay DP,Goonasekera SA,Sargent MA,Maillet M,Aronow BJ,Molkentin JD

更新日期：2009-11-10 00:00:00

abstract：:The generalized seizures of status epilepticus (SE) trigger a series of molecular and cellular events that produce cognitive deficits and can culminate in the development of epilepsy. Known early events include opening of the blood-brain barrier (BBB) and astrocytosis accompanied by activation of brain microglia. Wher...

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

authors： Varvel NH,Neher JJ,Bosch A,Wang W,Ransohoff RM,Miller RJ,Dingledine R

更新日期：2016-09-20 00:00:00

abstract：:Flow separation and vortex shedding are some of the most common phenomena experienced by bluff bodies under relative motion with the surrounding medium. They often result in a recirculation bubble in regions with adverse pressure gradient, which typically reduces efficiency in vehicles and increases loading on structu...

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

authors： Bocanegra Evans H,Hamed AM,Gorumlu S,Doosttalab A,Aksak B,Chamorro LP,Castillo L

更新日期：2018-02-06 00:00:00

abstract：:Spinach chloroplasts were found to contain three forms of cytochrome b(559) that have the same alpha-peak at 559 nm, but are distinguished from one another by their oxidation-reduction potentials. The high-potential (H) form (E(m) about 330-350 mV) is reducible by hydroquinone, the middle-potential (M) form (E(m) abou...

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

authors： Wada K,Arnon DI

更新日期：1971-12-01 00:00:00

abstract：:Translation initiation of the hepatitis C virus (HCV) RNA genome occurs through an internal ribosome entry site in a cap-independent manner. Here, we have examined the interaction between La antigen and the HCV 5' noncoding region (5'NCR). In this analysis, competitor RNAs derived from HCV 5'NCR carrying deletions and...

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

authors： Ali N,Siddiqui A

更新日期：1997-03-18 00:00:00

abstract：:The tightly coupled nature of the reaction sequence catalyzed by monoterpene cyclases has precluded direct observation of the topologically required isomerization step leading from geranyl pyrophosphate to the presumptive, enzyme-bound, tertiary allylic intermediate linalyl pyrophosphate, which ultimately cyclizes to ...

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

authors： Wheeler CJ,Croteau RB

更新日期：1987-07-01 00:00:00

abstract：:Soft corals of the family Xeniidae exhibit a unique, rhythmic pulsation of their tentacles (Movie S1), first noted by Lamarck nearly 200 y ago. However, the adaptive benefit of this perpetual, energetically costly motion is poorly understood. Using in situ underwater particle image velocimetry, we found that the pulsa...

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

authors： Kremien M,Shavit U,Mass T,Genin A

更新日期：2013-05-28 00:00:00

abstract：:Dentinal repair in the postnatal organism occurs through the activity of specialized cells, odontoblasts, that are thought to be maintained by an as yet undefined precursor population associated with pulp tissue. In this study, we isolated a clonogenic, rapidly proliferative population of cells from adult human dental...

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

authors： Gronthos S,Mankani M,Brahim J,Robey PG,Shi S

更新日期：2000-12-05 00:00:00