Regulation of T-cell antigen receptor (TCR) alpha-chain expression by TCR beta-chain transcripts.

abstract：:Surgical removal of one or both atrial appendages was employed in rats to reduce the intrinsic stores of atriopeptin (AP). In conscious rats (with intact baroreceptor reflexes), bilateral or unilateral atrial appendectomy suppressed the diuresis and natriuresis produced by acute volume expansion. Surprisingly, volume ...

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

authors： Sakata M,Greenwald JE,Needleman P

更新日期：1988-05-01 00:00:00

abstract：:The crystal structure of fructose-1,6-bisphosphatase (EC 3.1.3.11) complexed with fructose 6-phosphate, AMP, and Mg2+ has been solved by the molecular replacement method and refined at 2.5-A resolution to a R factor of 0.215, with root-mean-square deviations of 0.013 A and 3.5 degrees for bond lengths and bond angles,...

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

authors： Ke HM,Zhang YP,Lipscomb WN

更新日期：1990-07-01 00:00:00

abstract：:Two human 12-lipoxygenase enzyme (arachidonate:oxygen 12-oxidoreductase, EC 1.13.11.31)-related genes were characterized from 13 distinct clones isolated from three genomic bacteriophage and cosmid libraries. A complete gene (12-lipoxygenase gene 1) spanning approximately 17 kilobases and consisting of 14 exons with s...

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

authors： Funk CD,Funk LB,FitzGerald GA,Samuelsson B

更新日期：1992-05-01 00:00:00

abstract：:Dopamine supersensitivity occurs in schizophrenia and other psychoses, and after hippocampal lesions, antipsychotics, ethanol, amphetamine, phencyclidine, gene knockouts of Dbh (dopamine beta-hydroxylase), Drd4 receptors, Gprk6 (G protein-coupled receptor kinase 6), Comt (catechol-O-methyltransferase), or Th-/-, DbhTh...

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

authors： Seeman P,Weinshenker D,Quirion R,Srivastava LK,Bhardwaj SK,Grandy DK,Premont RT,Sotnikova TD,Boksa P,El-Ghundi M,O'dowd BF,George SR,Perreault ML,Männistö PT,Robinson S,Palmiter RD,Tallerico T

更新日期：2005-03-01 00:00:00

abstract：:Optimal infectivity of HIV-1 virions requires synthesis of the HIV-1 regulatory protein Nef in some producer cells but not others. A survey of 18 lymphoid cell lines found that Nef was dispensable in three, each of which harbored gammaretroviruses. Nef-dependent cell lines were rendered Nef-independent by a cell-free ...

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

authors： Pizzato M

更新日期：2010-05-18 00:00:00

abstract：:The history of the genus Pan is a topic of enduring interest. Chimpanzees (Pan troglodytes) are often divided into subspecies, but the population structure and genetic history of chimpanzees across Africa remain unclear. Some population genetics studies have led to speculation that, until recently, this species consti...

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

authors： Gonder MK,Locatelli S,Ghobrial L,Mitchell MW,Kujawski JT,Lankester FJ,Stewart CB,Tishkoff SA

更新日期：2011-03-22 00:00:00

abstract：:Two continuous-suspension lymphocyte lines were isolated from the spleen and fibrosarcoma of a New Zealand Black female mouse. A C-type virus with a density of 1.16 g x cm(-3), 70S RNA, and RNA-directed DNA polymerase activity was isolated. The virus was infectious for NRK, NZB, (NZB x NZW)F(1), and (NZW x NZW)F(1) em...

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

authors： Lerner RA,Jensen F,Kennel SJ,Dixon FJ,Des Roches G,Francke U

更新日期：1972-10-01 00:00:00

abstract：:Serum from bacillus Calmette-Guerin-infected mice injected with endotoxin induces the appearance of surface immunoglobulin, Ia antigen, and complement receptor on the surface of precursor bone-marrow-derived (B) cells. While endotoxin itself causes phenotypic conversion of both thymus-derived (T) cells and B cells in ...

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

authors： Hoffmann MK,Oettgen HF,Old LJ,Chin AF,Hammerling U

更新日期：1977-03-01 00:00:00

abstract：:Phosphorylation plays a critical role in controlling the function of cytoskeletal assemblies but no direct method yet exists to measure the phosphorylation state of proteins at the level of individual molecules and assemblies. Herein, we apply scanning transmission electron microscopy in combination with electron ener...

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

authors： Leapman RD,Gallant PE,Reese TS,Andrews SB

更新日期：1997-07-22 00:00:00

abstract：:Activation of the cascade of proteolytic caspases has been identified as the final common pathway of apoptosis in diverse biological systems. We have isolated a gene, termed MRIT, that possesses overall sequence homology to FLICE (MACH), a large prodomain caspase that links the aggregated complex of the death domain r...

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

authors： Han DK,Chaudhary PM,Wright ME,Friedman C,Trask BJ,Riedel RT,Baskin DG,Schwartz SM,Hood L

更新日期：1997-10-14 00:00:00

abstract：:We have inserted a fourth protein ligand into the zinc coordination polyhedron of carbonic anhydrase II (CAII) that increases metal affinity 200-fold (Kd = 20 fM). The three-dimensional structures of threonine-199-->aspartate (T199D) and threonine-199-->glutamate (T199E) CAIIs, determined by x-ray crystallographic met...

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

authors： Ippolito JA,Baird TT Jr,McGee SA,Christianson DW,Fierke CA

更新日期：1995-05-23 00:00:00

abstract：:On illuminating chloroplasts with "short-wavelength" monochromatic light that supports oxygen evolution, spectral evidence was obtained for a new photoreactive chloroplast component, provisionally designated C550, which shows a reversible decrease of absorbance with a maximum at 550 mmu. The light-induced absorbance c...

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

authors： Knaff DB,Arnon DI

更新日期：1969-07-01 00:00:00

abstract：:Declining biodiversity and ecosystem functions put many of nature's contributions to people at risk. We review and synthesize the scientific literature to assess 50-y global trends across a broad range of nature's contributions. We distinguish among trends in potential and realized contributions of nature, as well as ...

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

authors： Brauman KA,Garibaldi LA,Polasky S,Aumeeruddy-Thomas Y,Brancalion PHS,DeClerck F,Jacob U,Mastrangelo ME,Nkongolo NV,Palang H,Pérez-Méndez N,Shannon LJ,Shrestha UB,Strombom E,Verma M

更新日期：2020-12-22 00:00:00

abstract：:Preterm birth (PTB) complications are the leading cause of long-term morbidity and mortality in children. By using whole blood samples, we integrated whole-genome sequencing (WGS), RNA sequencing (RNA-seq), and DNA methylation data for 270 PTB and 521 control families. We analyzed this combined dataset to identify gen...

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

authors： Knijnenburg TA,Vockley JG,Chambwe N,Gibbs DL,Humphries C,Huddleston KC,Klein E,Kothiyal P,Tasseff R,Dhankani V,Bodian DL,Wong WSW,Glusman G,Mauldin DE,Miller M,Slagel J,Elasady S,Roach JC,Kramer R,Leinonen K,Linth

更新日期：2019-03-19 00:00:00

abstract：:Incorporation experiments with labeled sirohydrochlorin and trimethylisobacteriochlorin demonstrate that ring contraction in vivo to the corrin macrocycle of vitamin B12 liberates acetic acid. The C-20 atom of the precursors becomes the acetate carboxyl carbon. ...

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

authors： Battersby AR,Bushell MJ,Jones C,Lewis NG,Pfenninger A

更新日期：1981-01-01 00:00:00

abstract：:Restriction site variation in DNA that encodes rRNA (rDNA) was surveyed among 714 offspring within 31 lineages (26 genotypes) of obligate asexually reproducing Taraxacum officinale (dandelions). Although clonal offspring are expected, plants with nonparental rDNA were produced from two parents that were themselves sib...

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

authors： King LM,Schaal BA

更新日期：1990-02-01 00:00:00

abstract：:Senescent cell antigen (SCA), an aging antigen, is a protein that appears on old cells and marks them for removal by the immune system in mammals. It is derived from band 3, a ubiquitous membrane transport protein found in diverse cell types and tissues. We have used synthetic peptides to identify aging antigenic site...

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

authors： Kay MM,Marchalonis JJ,Hughes J,Watanabe K,Schluter SF

更新日期：1990-08-01 00:00:00

abstract：:The ability to regulate gene expression through transcription initiation underlies the adaptability and survival of all bacteria. Recent work has revealed that the transcription machinery in many bacteria diverges from the paradigm that has been established in Escherichia coliMycobacterium tuberculosis (Mtb) encodes t...

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

authors： Zhu DX,Garner AL,Galburt EA,Stallings CL

更新日期：2019-07-02 00:00:00

abstract：:Interaction between a peptide hormone and extracellular domains of its receptor is a crucial step for initiation of hormone action. We have developed a modification of the yeast two-hybrid system to study this interaction and have used it to characterize the interaction of insulin-like growth factor 1 (IGF-1) with its...

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

authors： Zhu J,Kahn CR

更新日期：1997-11-25 00:00:00

abstract：:The latency-associated nuclear antigen (LANA) of Kaposi sarcoma herpesvirus (KSHV) is mainly localized and functions in the nucleus of latently infected cells, playing a pivotal role in the replication and maintenance of latent viral episomal DNA. In addition, N-terminally truncated cytoplasmic isoforms of LANA, resul...

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

authors： Zhang G,Chan B,Samarina N,Abere B,Weidner-Glunde M,Buch A,Pich A,Brinkmann MM,Schulz TF

更新日期：2016-02-23 00:00:00

abstract：:Ferredoxin was isolated from individual Leucaena glauca trees, and the distribution of amino acids at three of the four sites of sequence heterogeneity was determined. The results indicated that the most probable causes of the observed microheterogeneity are the presence of either nonallelic nuclear genes or differing...

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

authors： Benson AM,Yasunobu KT

更新日期：1969-08-01 00:00:00

abstract：:The surface density of the triggering receptors responsible for the natural killer (NK)-mediated cytotoxicity is crucial for the ability of NK cells to kill susceptible target cells. In this study, we show that transforming growth factor beta1 (TGFbeta1) down-regulates the surface expression of NKp30 and in part of NK...

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

authors： Castriconi R,Cantoni C,Della Chiesa M,Vitale M,Marcenaro E,Conte R,Biassoni R,Bottino C,Moretta L,Moretta A

更新日期：2003-04-01 00:00:00

abstract：:We are presented with choices each day about how to invest our effort to achieve our goals. Critically, these decisions must frequently be made under conditions of incomplete information, where either the effort required or possible reward to be gained is uncertain. Such choices therefore require the development of po...

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

authors： Arulpragasam AR,Cooper JA,Nuutinen MR,Treadway MT

更新日期：2018-05-29 00:00:00

abstract：:We have found a defect in the ouabain-sensitive Na+, K+-ATPase (Na+ pump, EC 3.6.1.37) of erythrocytes from streptozocin diabetic rats. This defect was accompanied by an increase in cell volume and osmotic fragility and a decrease in the cytosolic K+/Na+ ratio. There was also a doubling in the time needed for diabetic...

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

authors： Kowluru R,Bitensky MW,Kowluru A,Dembo M,Keaton PA,Buican T

更新日期：1989-05-01 00:00:00

abstract：:Retrosplenial cortex (RSC) is involved in visuospatial integration and spatial learning, and RSC neurons exhibit discrete, place cell-like sequential activity that resembles the population code of space in hippocampus. To investigate the origins and population dynamics of this activity, we combined longitudinal cellul...

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

authors： Mao D,Neumann AR,Sun J,Bonin V,Mohajerani MH,McNaughton BL

更新日期：2018-07-31 00:00:00

abstract：:Previous work has demonstrated a role for the E2F1 gene product in signaling apoptosis, both as a result of the deregulation of the Rb/E2F pathway as well as in response to DNA damage. We now show that the ability of cells to suppress the apoptotic potential of E2F1, as might occur during the course of normal cellular...

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

authors： Hallstrom TC,Nevins JR

更新日期：2003-09-16 00:00:00

abstract：:The pleiotropic activities of interferons (IFNs) are mediated primarily through the transcriptional regulation of many downstream effector genes. The mRNA profiles from IFN-alpha, -beta, or -gamma treatments of the human fibrosarcoma cell line, HT1080, were determined by using oligonucleotide arrays with probe sets co...

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

authors： Der SD,Zhou A,Williams BR,Silverman RH

更新日期：1998-12-22 00:00:00

abstract：:The VX2 carcinoma-bearing rabbit is an animal model for tumor-induced hypercalcemia, thought to be due to increased bone destruction effected by prostaglandin E2. The present experiments suggest that the pathophysiology of the hypercalcemia differs from that previously proposed. Tumor was transplanted intramuscularly ...

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

authors： Doppelt SH,Slovik DM,Neer RM,Nolan J,Zusman RM,Potts JT Jr

更新日期：1982-01-01 00:00:00

abstract：:Early members of the dinosaur-pterosaur clade Ornithodira are very rare in the fossil record, obscuring our understanding of the origins of this important group. Here, we describe an early ornithodiran (Kongonaphon kely gen. et sp. nov.) from the Mid-to-Upper Triassic of Madagascar that represents one of the smallest ...

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

authors： Kammerer CF,Nesbitt SJ,Flynn JJ,Ranivoharimanana L,Wyss AR

更新日期：2020-07-28 00:00:00

abstract：:beta-Adrenergic receptors on Friend erythroleukemic cells were identified by the use of 125I-labeled hydroxybenzylpindolol, a potent beta-adrenergic antagonist. Binding of this ligand was saturable and stereospecific. The relative orders of potency of isoproterenol, epinephrine, and norepinephrine to displace bound hy...

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

authors： Schmitt H,Guyaux M,Pochet R,Kram R

更新日期：1980-07-01 00:00:00