Presence of the gypsy (MDG4) retrotransposon in extracellular virus-like particles.

abstract：:Ca2+ release from sarcoplasmic reticulum membranes, activated by alkaline pH occurs only when EGTA is present in the release medium. Addition of very low concentrations of Ca2+ to the medium inhibits Ca2+ release. The concentration of free Ca2+ required for 50% inhibition ranges from between 5 and 20 nM in different e...

journal_title：FEBS letters

authors： Argaman A,Shoshan-Barmatz V

更新日期：1989-01-16 00:00:00

abstract：:Several catalytic properties of the hydrogenase from Scenedesmus obliquus have been examined to optimize the purification conditions. The Km-value for H2-evolution in the presence of the most effective electron mediator methylviologen is 0.66 mM. The pH-optimum is 6.3, the temperature-optimum is 50 degrees C and the e...

journal_title：FEBS letters

authors： Schnackenberg J,Schulz R,Senger H

更新日期：1993-07-19 00:00:00

abstract：:A collagenase cleaving native type I [14C]collagen but inactive against the synthetic substrate Pz-Pro-Leu-Gly-Pro-D-Arg was extracted from mineralized human dental tissue. The enzyme specifically degrades native collagen into characteristic products (3/4) and (1/4). Its apparent molecular mass of 68 kDa is relatively...

journal_title：FEBS letters

authors： Dumas J,Hurion N,Weill R,Keil B

更新日期：1985-07-22 00:00:00

abstract：:We have identified in rat vascular smooth muscle cells (SMCs) the simultaneous expression of two TGF-beta type I receptor (ALK-5) cDNAs, occurring as a consequence of alternate usage of AG splice acceptor motifs separated by 12 nucleotides located at an intron-exon junction. When translated the resultant full length p...

journal_title：FEBS letters

authors： Agrotis A,Condron M,Bobik A

更新日期：2000-02-04 00:00:00

abstract：:Uptake of taurine in human placental brush-border membrane vesicles was greatly stimulated in the presence of an inwardly-directed Na+ + Cl- -gradient and uphill transport of taurine could be demonstrated under these conditions. Na+ as well as Cl- were obligatory for this uptake and both ion gradients could energize t...

journal_title：FEBS letters

authors： Miyamoto Y,Balkovetz DF,Leibach FH,Mahesh VB,Ganapathy V

更新日期：1988-04-11 00:00:00

abstract：:Circadian clocks are endogenous timing systems orchestrating the daily regulation of a huge variety of physiological, metabolic and behavioral processes. These clocks are important for health - in mammals, their disruption leads to a diverse number of pathologies. While genetic and biochemical approaches largely uncov...

journal_title：FEBS letters

authors： Wallach T,Kramer A

更新日期：2015-06-22 00:00:00

abstract：:Reliably pinpointing which specific amino acid residues form the interface(s) between a protein and its binding partner(s) is critical for understanding the structural and physicochemical determinants of protein recognition and binding affinity, and has wide applications in modeling and validating protein interactions...

journal_title：FEBS letters

authors： Xue LC,Dobbs D,Bonvin AM,Honavar V

更新日期：2015-11-30 00:00:00

abstract：:U46619 is a potent platelet agonist, its binding to the thromboxane A2 receptor resulting in Gq-binding protein-mediated responses; nevertheless, it is unable to cause platelet aggregation, unless released ADP is present. In this study we demonstrate that Gi activation is the step U46619 lacks to cause platelet aggreg...

journal_title：FEBS letters

authors： Pulcinelli FM,Pesciotti M,Pignatelli P,Riondino S,Gazzaniga PP

更新日期：1998-09-11 00:00:00

abstract：:We investigated whether activation of integrin receptors could modulate the expression of monocyte chemotactic protein-1 (MCP-1) in human hepatic stellate cells (HSC), mesenchymal cells responsible for extracellular matrix synthesis within the liver. When compared to non-adherent cells, HSC plated on collagen types I ...

journal_title：FEBS letters

authors： Marra F,Pastacaldi S,Romanelli RG,Pinzani M,Ticali P,Carloni V,Laffi G,Gentilini P

更新日期：1997-09-08 00:00:00

abstract：:Adenosine kinase is one of the enzymes potentially responsible for the formation of cytokinin nucleotides in plants. Using a zeatin affinity column a 40 kDa protein was isolated from tobacco Bright Yellow 2 (TBY-2) and identified by mass spectrometry as adenosine kinase. The ligand interaction reported here can be dis...

journal_title：FEBS letters

authors： Laukens K,Lenobel R,Strnad M,Van Onckelen H,Witters E

更新日期：2003-01-02 00:00:00

abstract：:Coding region and intronic mutations in the gene for microtubule-associated protein tau cause frontotemporal dementia and Parkinsonism linked to chromosome 17 (FTDP-17). Most coding region mutations effect a reduced ability of tau protein to interact with microtubules and lead to the formation of a filamentous patholo...

journal_title：FEBS letters

authors： Smith MJ,Crowther RA,Goedert M

更新日期：2000-11-10 00:00:00

abstract：:Photoaffinity labelling with [alpha-32P]GTP allowed to detect a 54 kDa GTP-binding protein in rat pancreatic plasma membranes and in pancreatic AR 4-2J cell membranes. Like the 42 and 48 kDa Gs alpha subunits and the 41 kDa Gi alpha subunit, this protein was absent from zymogen granule membranes. Contrastingly, a new ...

journal_title：FEBS letters

authors： Lambert M,Bui ND,Christophe J

更新日期：1990-10-01 00:00:00

abstract：:Rats were infused intravenously with a bolus of mevalonolactone or cholesterol-rich chylomicron and microsomes prepared from the livers at times up to 2 h after the infusion. Acyl-CoA cholesterol acyltransferase (ACAT) activity was measured in the microsomes under conditions that define the activity state of the enzym...

journal_title：FEBS letters

authors： Suckling KE,Stange EF,Dietschy JM

更新日期：1983-08-08 00:00:00

abstract：:A full-length cDNA clone (RASC8) encoding glutaredoxin (thioltransferase) was isolated from a cDNA library of an aleurone layer prepared from a developing seed of rice (Oryza sativa L.). RASC8, 568bp in length, contained an ATG codon and two possible polyadenylation signals, and encoded 112 amino acid residues. Cys-Pr...

journal_title：FEBS letters

authors： Minakuchi K,Yabushita T,Masumura T,Ichihara K,Tanaka K

更新日期：1994-01-10 00:00:00

abstract：:Quantitative modeling of intracellular processes often requires information about intracellular rate constants as well as the concentrations of low abundance species in individual cells. Single molecule imaging techniques offer not only new ways for obtaining such information but also the possibilities to test model-b...

journal_title：FEBS letters

authors： Li GW,Elf J

更新日期：2009-12-17 00:00:00

abstract：:Microdissected, beta-cell-rich pancreatic islets from ob/ob mice were used in studies of 86Rb+ transport. D-Glucose (20 mM) induced a biphasic reduction in 86Rb+ efflux. The reduction stabilized within 10 min at 34% of the efflux rate at zero glucose. The initial 86Rb+ uptake (5 min) was dose-dependently reduced by ou...

journal_title：FEBS letters

authors： Lindström P,Norlund L,Sehlin J

更新日期：1986-05-05 00:00:00

abstract：:Xenopus oocytes expressing neuronal alpha 1C, alpha 2 and beta 1b calcium channel subunit cDNAs were used in this study. During two-electric voltage clamp recording the oocyte was injected with 10-20 nl of a 100 mM BAPTA solution. Under these conditions, the endogenous Ca-activated Cl current was completely suppressed...

journal_title：FEBS letters

authors： Charnet P,Bourinet E,Dubel SJ,Snutch TP,Nargeot J

更新日期：1994-05-09 00:00:00

abstract：:In unicellular species codon usage is determined by mutational biases and natural selection. Among prokaryotes, the influence of these factors is different if the genome is skewed towards AT or GC, since in AT-rich organisms translational selection is absent. On the other hand, in AT-rich unicellular eukaryotes the tw...

journal_title：FEBS letters

authors： Naya H,Romero H,Carels N,Zavala A,Musto H

更新日期：2001-07-20 00:00:00

abstract：:Regulators of G protein signaling RGS4 and RGS7 accelerate the kinetics of K(+) channels (GIRKs) in the Xenopus oocyte system. Here, via quantitative analysis of RGS expression, we reveal biphasic effects of RGSs on GIRK regulation. At low concentrations, RGS4 inhibited basal GIRK activity, but stimulated it at high c...

journal_title：FEBS letters

authors： Keren-Raifman T,Bera AK,Zveig D,Peleg S,Witherow DS,Slepak VZ,Dascal N

更新日期：2001-03-09 00:00:00

abstract：:The Ca2+-binding parvalbumin has been purified for the first time from rat kidney. Its biochemical and immunological properties were indistinguishable from the muscle counterpart. By immunohistochemical methods parvalbumin was localized in part of the distal tubule and proximal collecting duct, similar to the vitamin ...

journal_title：FEBS letters

authors： Schneeberger PR,Heizmann CW

更新日期：1986-05-26 00:00:00

abstract：:50 S ribosomal subunit derivatives without the 5 S RNA-protein complex obtained either by splitting with EDTA or by reconstitution from the 23 S RNA and proteins have been studied by electron microscopy. Removal of the 5 S RNA-protein complex is shown to affect neither the overall morphology of the larger ribosomal su...

journal_title：FEBS letters

authors： Selivanova OM,Gongadze GM,Gudkov AT,Vasiliev VD

更新日期：1986-03-03 00:00:00

abstract：:Glutamate uptake by rat hepatocytes in primary monolayer culture was found to be mediated by a Na+-independent and by two Na+-dependent transport systems of high and low affinity. Inhibition studies with cysteate and other model amino acids rules out the participation of the neutral amino acid transport systems A, ASC...

journal_title：FEBS letters

authors： Gebhardt R,Mecke D

更新日期：1983-09-19 00:00:00

abstract：:We show that inverted membrane vesicles from Corynebacterium glutamicum, a Gram-positive bacterium, are able to generate and maintain an electrochemical gradient of protons in response to the addition of NADH. This result indicates that the respiratory chain is intact and that the vesicles are reasonably impermeable t...

journal_title：FEBS letters

authors： Schrempp S,Bayan N,Shechter E

更新日期：1994-12-12 00:00:00

abstract：:In the new view, hydrophobic free energy is measured by the work of solute transfer of hydrocarbon gases from vapor to aqueous solution. Reasons are given for believing that older values, measured by solute transfer from a reference solvent to water, are not quantitatively correct. The hydrophobic free energy from gas...

journal_title：FEBS letters

authors： Baldwin RL

更新日期：2013-04-17 00:00:00

abstract：:A point mutation (Ala-589 to Thr) in the transmembrane protein of the human immunodeficiency virus type 1 (HIV-1) has been shown to decrease the sensitivity of the virus to the neutralizing effect of human HIV-1 specific antibodies [(1990) J. Virol. 64, 3240-3248]. Here 17-residue peptides with the parental and mutant...

journal_title：FEBS letters

authors： Klasse J,Pipkorn R,Blomberg J,Han KH,Hilton B,Ferretti JA

更新日期：1993-05-24 00:00:00

abstract：:The molecular organisation of the Prochlorococcus marinus rnpB gene and the catalytic activity of the encoded RNA were characterised. Kinetic parameters for several pre-tRNA substrates were comparable to those from other eubacterial RNase P RNAs, although unusually high cation concentrations were required. The CCA-end...

journal_title：FEBS letters

authors： Hess WR,Fingerhut C,Schön A

更新日期：1998-07-17 00:00:00

abstract：:The early response gene IEX-1 modulates apoptosis and cell growth in a poorly defined fashion. Here, we describe the effect of hammerhead ribozymes specifically disrupting IEX-1 expression in 293 cells. Compared to vector control, 293 cells exhibit a reduced growth rate and a slowed cell cycle progression, when stably...

journal_title：FEBS letters

authors： Grobe O,Arlt A,Ungefroren H,Krupp G,Fölsch UR,Schmidt WE,Schäfer H

更新日期：2001-04-13 00:00:00

abstract：:Lectin-like oxidized low-density lipoprotein receptor (LOX-1) is a scavenger receptor that binds oxidized low-density lipoprotein (OxLDL) and has a role in atherosclerosis development. The N-terminus intracellular region (cytoplasmic domain) of LOX-1 mediates receptor internalization and trafficking, potentially throu...

journal_title：FEBS letters

authors： Bakthavatsalam D,Soung RH,Tweardy DJ,Chiu W,Dixon RA,Woodside DG

更新日期：2014-06-13 00:00:00

abstract：:A gene encoding an antifreeze protein (AFP) was isolated from carrot (Daucus carota) using sequence information derived from the purified protein. The carrot AFP is highly similar to the polygalacturonase inhibitor protein (PGIP) family of apoplastic plant leucine-rich repeat (LRR) proteins. Expression of the AFP gene...

journal_title：FEBS letters

authors： Meyer K,Keil M,Naldrett MJ

更新日期：1999-03-26 00:00:00

abstract：:Targeting of preproteins to mitochondria and their translocation across the outer membrane are mediated by the mitochondrial receptor complex. This protein complex contains the import receptors MOM19 and MOM72 and the general insertion pore GIP. All seven components of the receptor complex are synthesized in the cytos...

journal_title：FEBS letters

authors： Keil P,Pfanner N

更新日期：1993-04-26 00:00:00