Sigma factors, asymmetry, and the determination of cell fate in Bacillus subtilis.

abstract：:The nod (no distributive disjunction) and the ncd (non-claret disjunctional) mutations are both female-specific, recessive meiotic mutations in Drosophila melanogaster. Mutations at either locus show high frequencies of nondisjunction at meiosis I and both have been shown to encode kinesin-like proteins. Unlike the nc...

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

authors： Knowles BA,Hawley RS

更新日期：1991-08-15 00:00:00

abstract：:Antigen receptor-stimulated cell death of developing, immature T cells plays an important role in shaping the repertoire of antigens to which mature T cells will respond, but a role for receptor-stimulated death in controlling responses of mature T cells is controversial. Mutant lpr/lpr mice exhibit an autoimmune synd...

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

authors： Russell JH,Rush B,Weaver C,Wang R

更新日期：1993-05-15 00:00:00

abstract：:Both polarities of the satellite RNA of tobacco ringspot virus are sources of self-cleaving sequences. RNA of the less abundant, negative polarity, designated sTobRV-(-)RNA, has cleaving activity that was mapped previously to two noncontiguous regions of the polyribonucleotide chain. Endoribonucleolytic oligoribonucle...

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

authors： Feldstein PA,Buzayan JM,van Tol H,deBear J,Gough GR,Gilham PT,Bruening G

更新日期：1990-04-01 00:00:00

abstract：:3.L2 T cell receptor transgenic T cells are activated by the 64-76 peptide of the mouse hemoglobin d beta chain [Hb(64-76)], and their response is antagonized by the position 72 alanine substitution of this peptide (A72). To test the effect of this altered peptide ligand (APL) on 3.L2 T cell function in vivo, a transg...

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

authors： Basu D,Williams CB,Allen PM

更新日期：1998-11-24 00:00:00

abstract：:The human Thy-1 gene has been isolated and sequenced and compared to the rat and mouse Thy-1 genes. All three genes are organized in the same way: one exon encoding the majority of the signal peptide, another encoding the transmembrane segment, and a third encoding the remainder of the protein. One major structural di...

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

authors： Seki T,Spurr N,Obata F,Goyert S,Goodfellow P,Silver J

更新日期：1985-10-01 00:00:00

abstract：:Alzheimer's disease (AD) and other neurodegenerative disorders are associated with the cytoplasmic aggregation of microtubule-associated protein tau. Recent evidence supports transcellular transfer of tau misfolding (seeding) as the mechanism of spread within an affected brain, a process reminiscent of viral infection...

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

authors： McEwan WA,Falcon B,Vaysburd M,Clift D,Oblak AL,Ghetti B,Goedert M,James LC

更新日期：2017-01-17 00:00:00

abstract：:A calmodulin-neomycin-resistance fusion gene was introduced into Trypanosoma brucei by electroporation, and stably transformed cell lines were obtained. In all of the transformants, the fusion gene had integrated into the host genome at the cognate locus, evidently by homologous recombination within flanking calmoduli...

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

authors： Eid J,Sollner-Webb B

更新日期：1991-03-15 00:00:00

abstract：:Many multifunctional tumor suppressor proteins have low stability, a property linked to cancer development. The von Hippel-Lindau tumor suppressor protein (pVHL) is one of these proteins. pVHL forms part of the E3 ubiquitin ligase complex that regulates the degradation of the hypoxia-inducible factor (HIF). Under nati...

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

authors： Liu J,Nussinov R

更新日期：2008-01-22 00:00:00

abstract：:Antibodies to the insulin receptor were prepared in BALB/c mice by immunization with IM-9 human lymphocytes, a cell type that has a large number of plasma membrane insulin receptors. The spleens of these mice were then removed, and their lymphocytes were fused to a mouse myeloma cell line, FO cells. After screening ov...

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

authors： Roth RA,Cassell DJ,Wong KY,Maddux BA,Goldfine ID

更新日期：1982-12-01 00:00:00

abstract：:Malaria control is threatened by a limited pipeline of effective pharmaceuticals against drug-resistant strains of Plasmodium falciparum Components of the mitochondrial electron transport chain (ETC) are attractive targets for drug development, owing to exploitable differences between the parasite and human ETC. Disru...

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

authors： Lane KD,Mu J,Lu J,Windle ST,Liu A,Sun PD,Wellems TE

更新日期：2018-06-12 00:00:00

abstract：:In many human cancers, tumor-specific chromosomal rearrangements are known to create chimeric products with the ability to transform cells. The EWS/WT1 protein is such a fusion product, resulting from a t(11;22) chromosomal translocation in desmoplastic small round cell tumors, where 265 aa from the EWS amino terminus...

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

authors： Kim J,Lee JM,Branton PE,Pelletier J

更新日期：1999-12-07 00:00:00

abstract：:The origin of plant chemical ecology generally dates to the late 1950s, when evolutionary entomologists recognized the essential role of plant secondary metabolites in plant-insect interactions and suggested that plant chemical diversity evolved under the selection pressure of herbivory. However, similar ideas had alr...

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

authors： Hartmann T

更新日期：2008-03-25 00:00:00

abstract：:Neuronal specificity in retinal ganglion cells of Xenopus subserves the orderly connections of the optic nerve fibers in the tectum. This specificity derives from positional information acquired by the developing retina at embryonic stages 28-31. Here we report that ganglion cells of embryonic stage 28 eyes can acquir...

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

authors： Hunt RK,Jacobson M

更新日期：1972-04-01 00:00:00

abstract：:Fifteen tumor-containing specimens were obtained directly from patients with small cell carcinoma of the lung and tested for their ability to grow in serum-supplemented medium and in serum-free medium supplemented with hydrocortisone, insulin, transferrin, estrogen, and selenium (HITES). The tumor cells replicated in ...

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

authors： Carney DN,Bunn PA Jr,Gazdar AF,Pagan JA,Minna JD

更新日期：1981-05-01 00:00:00

abstract：:The land plants and their immediate green algal ancestors, the charophytes, form the Streptophyta. There is evidence that both the chloroplast DNA (cpDNA) and mitochondrial DNA (mtDNA) underwent substantial changes in their architecture (intron insertions, gene losses, scrambling in gene order, and genome expansion in...

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

authors： Turmel M,Otis C,Lemieux C

更新日期：2002-08-20 00:00:00

abstract：:Inactivation of the recently identified murMN operon in penicillin-resistant strains of Streptococcus pneumoniae was shown already to cause two major effects: elimination of branched-structured muropeptides from the cell wall and complete loss of penicillin resistance. We now show that cells with inactivated murMN als...

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

authors： Filipe SR,Severina E,Tomasz A

更新日期：2002-02-05 00:00:00

abstract：:Two-dimensional gel electrophoresis of immunoprecipitated human HLA-DR antigens from cells expressing the HLA-DR4 haplotype shows distinct clustering of beta-chain patterns. Six unique electrophoretic variants were observed among 17 HLA-DR4 homozygous cell lines (HCL) analyzed. These patterns correlate precisely with ...

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

authors： Nepom BS,Nepom GT,Mickelson E,Antonelli P,Hansen JA

更新日期：1983-11-01 00:00:00

abstract：:Human tuberculosis is caused by members of the Mycobacterium tuberculosis complex (MTBC) that vary in virulence and transmissibility. While genome-wide association studies have uncovered several mutations conferring drug resistance, much less is known about the factors underlying other bacterial phenotypes. Variation ...

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

authors： Øyås O,Borrell S,Trauner A,Zimmermann M,Feldmann J,Liphardt T,Gagneux S,Stelling J,Sauer U,Zampieri M

更新日期：2020-04-14 00:00:00

abstract：:A hierarchy of residue density assessments and packing properties in protein structures are contrasted, including a regular density, a variety of charge densities, a hydrophobic density, a polar density, and an aromatic density. These densities are investigated by alternative distance measures and also at the interfac...

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

authors： Baud F,Karlin S

更新日期：1999-10-26 00:00:00

abstract：:Hearing is one of the last sensory modalities to be subjected to genetic analysis in Drosophila melanogaster. We describe a behavioral assay for auditory function involving courtship among groups of males triggered by the pulse component of the courtship song. In a mutagenesis screen for mutations that disrupt the aud...

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

authors： Eberl DF,Duyk GM,Perrimon N

更新日期：1997-12-23 00:00:00

abstract：:In virtually every real-life situation humans are confronted with complex and cluttered visual environments that contain a multitude of objects. Because of the limited capacity of the visual system, objects compete for neural representation and cognitive processing resources. Previous work has shown that such attentio...

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

authors： Kaiser D,Stein T,Peelen MV

更新日期：2014-07-29 00:00:00

abstract：:During response of budding yeast to peptide mating pheromone, the cell becomes markedly polarized and MAPK scaffold protein Ste5 localizes to the resulting projection (shmoo tip). We demonstrated before that this recruitment is essential for sustained MAPK signaling and requires interaction of a pleckstrin homology (P...

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

authors： Garrenton LS,Stefan CJ,McMurray MA,Emr SD,Thorner J

更新日期：2010-06-29 00:00:00

abstract：:In this study we examine how the introduction of a reference lottery with nonrandom outcomes alters the way in which choices among pairs of lotteries are made, even if it does not alter the choices. We use different domains (some of the lotteries produce gains, other losses) and different contexts (one member of the p...

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

authors： Dickhaut J,McCabe K,Nagode JC,Rustichini A,Smith K,Pardo JV

更新日期：2003-03-18 00:00:00

abstract：:Human cancer cells that had had high (greater than 160) tissue culture passages, when transplanted into antithymocyte-treated F344 newborn rats, caused induction of rat sarcomas in the rats within 2 or 3 subcultures, whereas human cancer cells with low (5-33) passages in vitro did not cause overt induction of rat sarc...

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

authors： Huebner RJ,Fish DC,Djurickovic D,Trimmer RW,Bare AL,Bare RM,Smith GT

更新日期：1979-04-01 00:00:00

abstract：:Targeted disruption of the pp60(src) (Src) gene has implicated this tyrosine kinase in osteoclast-mediated bone resorption and as a therapeutic target for the treatment of osteoporosis and other bone-related diseases. Herein we describe the discovery of a nonpeptide inhibitor (AP22408) of Src that demonstrates in vivo...

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

authors： Shakespeare W,Yang M,Bohacek R,Cerasoli F,Stebbins K,Sundaramoorthi R,Azimioara M,Vu C,Pradeepan S,Metcalf C 3rd,Haraldson C,Merry T,Dalgarno D,Narula S,Hatada M,Lu X,van Schravendijk MR,Adams S,Violette S,Smith J,

更新日期：2000-08-15 00:00:00

abstract：:Enzyme cytochemistry has been used, at the light and electron microscope levels, to "mark" cytoplasmic organelles of mammalian cells. Catalase cytochemistry permitted identification of microperoxisomes, apparently ubiquitous organelles that are attached by numerous slender connections to the endoplasmic reticulum. Thi...

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

authors： Novikoff AB

更新日期：1976-08-01 00:00:00

abstract：:Transmembrane (TM) domains of integral membrane proteins are generally thought to be helical. However, a Gly-Pro sequence within the TM domain of the insulin receptor is predicted to act as a helix breaker. CD analyses of model TM peptides in a lipid-like environment show that substitution of Gly and Pro by Ala enhanc...

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

authors： Goncalves E,Yamada K,Thatte HS,Backer JM,Golan DE,Kahn CR,Shoelson SE

更新日期：1993-06-15 00:00:00

abstract：:Neuroinflammation is an important contributor to neuronal pathology and death in neurodegenerative diseases and neuronal injury. Therapeutic interventions blocking the activity of the inflammatory kinase IKKβ, a key regulator of neuroinflammatory pathways, is protective in several animal models of neurodegenerative di...

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

authors： Ochaba J,Fote G,Kachemov M,Thein S,Yeung SY,Lau AL,Hernandez S,Lim RG,Casale M,Neel MJ,Monuki ES,Reidling J,Housman DE,Thompson LM,Steffan JS

更新日期：2019-05-28 00:00:00

abstract：:The effects of predator intimidation on habitat use and behavior of prey species are rarely quantified for large marine vertebrates over ecologically relevant scales. Using state space movement models followed by a series of step selection functions, we analyzed movement data of concurrently tracked prey, bowhead whal...

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

authors： Matthews CJD,Breed GA,LeBlanc B,Ferguson SH

更新日期：2020-03-24 00:00:00

abstract：:Although it is known that the c-myc oncogene is rearranged in a head-to-head fashion with the immunoglobulin heavy chain locus in mouse plasmacytomas, it has not been clear whether the c-myc oncogene is translocated to the heavy chain locus on mouse chromosome 12 or whether the heavy chain locus is translocated to the...

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

authors： Erikson J,Miller DA,Miller OJ,Abcarian PW,Skurla RM,Mushinski JF,Croce CM

更新日期：1985-06-01 00:00:00