Asparaginyl-tRNA synthetase from the Escherichia coli temperature-sensitive strain HO202. A proline replacement in motif 2 is responsible for a large increase in Km for asparagine and ATP.

abstract：:In Alzheimer's disease and related dementias, human tau protein aggregates into paired helical filaments and neurofibrillary tangles. However, such tau aggregates have not yet been demonstrated in transgenic mouse models of the disease. One of the possible explanations would be that mouse tau has different properties ...

journal_title：FEBS letters

authors： Kampers T,Pangalos M,Geerts H,Wiech H,Mandelkow E

更新日期：1999-05-14 00:00:00

abstract：:The family of lipases (triacylglycerol-acyl-hydrolases EC 3.1.1.3) constitutes an interesting class of enzymes because of their ability to interact with lipid-water interfaces, their wide range of substrate specificities, and their potential industrial applications. Here we report the first crystal structure of a bact...

journal_title：FEBS letters

authors： Noble ME,Cleasby A,Johnson LN,Egmond MR,Frenken LG

更新日期：1993-09-27 00:00:00

abstract：:Chemical modification of lysine residues in glucose oxidase was carried out using citraconic anhydride. Modification brought about changes in the kinetic properties of the enzyme as evident by substantial lowering of V(max) and K(m). Enhancement of tryptophan fluorescence was observed with a dramatic change in its pH ...

journal_title：FEBS letters

authors： Hosseinkhani S,Ranjbar B,Naderi-Manesh H,Nemat-Gorgani M

更新日期：2004-03-12 00:00:00

abstract：:Linkage between the high-capacity Ca2+-binding protein calsequestrin and the ryanodine receptor is proposed to be essential for proper Ca2+-release during skeletal muscle excitation-contraction coupling. However, no direct biochemical evidence exists showing a connection between these high-molecular-mass complexes in ...

journal_title：FEBS letters

authors： Murray BE,Ohlendieck K

更新日期：1998-06-16 00:00:00

abstract：:Photoaffinity crosslinking has been utilized to probe the nature of the ligand-receptor interface for a number of G protein-coupled receptor systems. Often the photoreactive benzophenone moiety incorporated in the ligand is found to react with a methionine in the receptor. We introduced methionines one-at-a-time into ...

journal_title：FEBS letters

authors： Wittelsberger A,Thomas BE,Mierke DF,Rosenblatt M

更新日期：2006-03-20 00:00:00

abstract：:The proteolytic processing of rabbit intestinal lactase-phlorizin-hydrolase (LPH) was studied by pulse-chase and continuous labeling experiments in organ culture from 15-day-old rabbits in the presence of glycosylation and processing inhibitors. Monensin and brefeldin A inhibited the two proteolytic cleavages of the p...

journal_title：FEBS letters

authors： Rossi M,Maiuri L,Salvati VM,Russomanno C,Auricchio S

更新日期：1993-12-27 00:00:00

abstract：:Aminoacyl-tRNA synthetases, a group of enzymes catalyzing aminoacyl-tRNA formation, may possess inherent editing activity to clear mistakes arising through the selection of non-cognate amino acid. It is generally assumed that both editing substrates, non-cognate aminoacyl-adenylate and misacylated tRNA, are hydrolyzed...

journal_title：FEBS letters

authors： Gruic-Sovulj I,Rokov-Plavec J,Weygand-Durasevic I

更新日期：2007-10-30 00:00:00

abstract：:The oxysterols, 7beta-hydroxycholesterol and 7-ketocholesterol, are involved in the cytotoxicity of oxidized LDL. To elucidate their molecular mechanisms, the human promonocytic leukemia cells U937 and U4 were used. U4 cells overexpressing Bcl-2 were obtained by transfection of U937 cells. 7Beta-hydroxycholesterol and...

journal_title：FEBS letters

authors： Lizard G,Lemaire S,Monier S,Gueldry S,Néel D,Gambert P

更新日期：1997-12-15 00:00:00

abstract：:A-disintegrin and metalloproteinase 10 (ADAM10) is involved in the generation of amyloid-β (Aβ) during amyloid precursor protein (APP) processing, and has a protective effect against Aβ neurotoxicity. We explored how metallothionein-III (MT-III) is regulated in the non-amyloidogenic pathway to generate soluble APPα (s...

journal_title：FEBS letters

authors： Park BH,Kim HG,Jin SW,Song SG,Jeong HG

更新日期：2014-06-27 00:00:00

abstract：:Dinucleotide polyphosphates (ApnA) have emerged as signaling molecules in rapidly dividing cells. The presence and role of Ap5A in the heart remain unknown. Here, we report that the myocardium contains abundant amounts of diadenosine 5',5"-P1,P5-pentaphosphate (Ap5A), a member of the ApnA family. Ischemia induced 10-f...

journal_title：FEBS letters

authors： Jovanovic A,Jovanovic S,Mays DC,Lipsky JJ,Terzic A

更新日期：1998-02-27 00:00:00

abstract：:We have cloned a novel nuclear gene for a ribosomal protein of rice and Arabidopsis that is like the bacterial ribosomal protein S9. To determine the subcellular localization of the gene product, we fused the N-terminal region and green fluorescent protein and expressed it transiently in rice seedlings. Localized fluo...

journal_title：FEBS letters

authors： Arimura S,Takusagawa S,Hatano S,Nakazono M,Hirai A,Tsutsumi N

更新日期：1999-05-07 00:00:00

abstract：:Small RNAs are non-coding regulatory RNA molecules that control gene expression by mediating mRNA degradation, translational inhibition, or chromatin modification. Virus-derived small RNAs induce silencing of viral RNAs and are essential for antiviral defense in both animal and plant systems. The role of host endogeno...

journal_title：FEBS letters

authors： Jin H

更新日期：2008-08-06 00:00:00

abstract：:A serum-free medium conditioned by U937, a human cell line of monocyte/macrophage origin, was found capable of inducing apoptosis on exponentially growing U937 cells themselves (autocrine suicide). The apoptosis-inducing agent is a macromolecule and possibly a protein (SKT factor), with a relative molecular mass in th...

journal_title：FEBS letters

authors： Ghibelli L,Coppola S,Nosseri C,Bergamini A,Beninati S

更新日期：1994-05-09 00:00:00

abstract：:Replacing the essential Cys-149 by a selenocysteine into the active site of phosphorylating glyceraldehyde 3-phosphate dehydrogenase (GAPDH) from Bacillus stearothermophilus leads to a selenoGAPDH that mimics a selenoperoxidase activity. Saturation kinetics were observed with cumenyl and tert-butyl hydroperoxides, wit...

journal_title：FEBS letters

authors： Boschi-Muller S,Muller S,Van Dorsselaer A,Böck A,Branlant G

更新日期：1998-11-20 00:00:00

abstract：:For almost 30 years, Wnt proteins have been known as key regulators of many developmental decisions, including the formation of the embryonic axes, patterning of the CNS, limb bud outgrowth and segment polarity. However, live cell imaging of active Wnt proteins was rarely reported. Here, we have generated a Wnt2b-EGFP...

journal_title：FEBS letters

authors： Holzer T,Liffers K,Rahm K,Trageser B,Ozbek S,Gradl D

更新日期：2012-06-04 00:00:00

abstract：:Complete [1H]NMR resonance assignments are presented for the second of the three zinc fingers from SW15 as it appears in both 1- and 2-finger constructs. Signals from finger 2 are unaffected by the presence or absence of finger 1, showing that the protein has a modular construction. The structure of finger 2 comprises...

journal_title：FEBS letters

authors： Neuhaus D,Nakaseko Y,Nagai K,Klug A

更新日期：1990-03-26 00:00:00

abstract：:Different bioinformatics methods illuminate different aspects of protein function, from specific catalytic activities to broad functional categories. Here, a triple-pronged approach to predict function for a domain of unknown function, DUF2086, is applied. Distant homology to characterised enzymes and conservation of ...

journal_title：FEBS letters

authors： Mello LV,Rigden DJ

更新日期：2012-11-02 00:00:00

abstract：:Cytosolic sialidase Neu2 has been implicated in myoblast differentiation. Here we observed a significant upregulation of Neu2 expression during differentiation of murine C2C12 myoblasts. This was evidenced both as an increase in Neu2 mRNA steady-state levels and in the cytosolic sialidase enzymatic activity. To unders...

journal_title：FEBS letters

authors： Fanzani A,Giuliani R,Colombo F,Zizioli D,Presta M,Preti A,Marchesini S

更新日期：2003-07-17 00:00:00

abstract：:Casein kinase Ialpha (CKIalpha) belongs to a family of serine/threonine protein kinases involved in membrane trafficking, RNA processing, mitotic spindle formation and cell cycle progression. In this report, we identified several CKIalpha interacting proteins including RCC1, high mobility group proteins 1 and 2 (HMG1,...

journal_title：FEBS letters

authors： Dubois T,Howell S,Zemlickova E,Aitken A

更新日期：2002-04-24 00:00:00

abstract：:HMr alpha 2CPI was found to be an inhibitor of human liver cathepsin H by the measurement of the dissociation constant (Ki), the association rate constant (k1) and the dissociation rate constant (k-1) between the enzyme and the inhibitor. These data suggest that this protein-proteinase inhibitor can play a physiologic...

journal_title：FEBS letters

authors： Pagano M,Engler R

更新日期：1984-01-23 00:00:00

abstract：:We have purified two growth factors from dogfish brain and retina by using their binding affinity for heparin-Sepharose. These growth factors were eluted at 1 and 2 M NaCl similarly to those purified from bovine brain or retina. Their mitogenic activity was assayed in vitro on the same mammalian cells: bovine lens epi...

journal_title：FEBS letters

authors： Lagente O,Diry M,Courtois Y

更新日期：1986-07-07 00:00:00

abstract：:Interfering RNA was used to suppress the expression of the genes At1g06680 and At2g30790 in Arabidopsis thaliana, which encode the PsbP-1 and PsbP-2 proteins, respectively, of Photosystem II. A phenotypic series of transgenic plants was recovered that expressed intermediate and low amounts of PsbP. Earlier we had docu...

journal_title：FEBS letters

authors： Yi X,Hargett SR,Frankel LK,Bricker TM

更新日期：2009-06-18 00:00:00

abstract：:PPP2R2C encodes a gamma isoform of the subunit B55 subfamily, which is a regulatory subunit of Protein phosphatase type 2A (PP2A). Our study shows that PPP2R2C is downregulated in glioma cells and human brain cancer patient samples. Overexpression of PPP2R2C inhibited cancer cell proliferation both in vitro and in viv...

journal_title：FEBS letters

authors： Fan YL,Chen L,Wang J,Yao Q,Wan JQ

更新日期：2013-12-11 00:00:00

abstract：:The yeast PCK1 gene coding for phosphoenolpyruvate carboxykinase (PEPCK) was isolated by functional complementation of pck1 strains from S. cerevisiae. Only one copy of the gene was found per haploid yeast genome. An RNA of about 2 kb which hybridized with a DNA probe internal to the PCK1 gene was found only in cells ...

journal_title：FEBS letters

authors： Valdés-Hevia MD,de la Guerra R,Gancedo C

更新日期：1989-12-04 00:00:00

abstract：:Osteoblastic cells have been shown to be involved in osteoclast formation through cell to cell contacts. This study was designed to examine the possible function of vascular cell adhesion molecule 1 (VCAM-1) during osteoclastogenesis. As a source for stromal cells we used the recently established mouse bone marrow str...

journal_title：FEBS letters

authors： Feuerbach D,Feyen JH

更新日期：1997-01-27 00:00:00

abstract：:We have examined the ability of inositol 1,4,5-trisphosphate (InsP3) to cause contractions of mechanically skinned muscle fibres of frog and barnacle. InsP3 (10-500 microM) did not cause any tension development in 25 frog skinned fibres and 26 barnacle myofibrillar bundles, although contractions could be readily evoke...

journal_title：FEBS letters

authors： Lea TJ,Griffiths PJ,Tregear RT,Ashley CC

更新日期：1986-10-20 00:00:00

abstract：:In the bovine ovary there is a delay of 4-6 days between the observed maximum of oxytocin mRNA and the peak in the luteal levels of oxytocin nonapeptide. This implies a maturation process involving components of the post-translational processing pathway. In situ hybridization shows the oxytocin gene to be transcribed ...

journal_title：FEBS letters

authors： Fehr S,Ivell R,Koll R,Schams D,Fields M,Richter D

更新日期：1987-01-01 00:00:00

abstract：:We studied the molecular mechanism underlying PDT-induced apoptosis-dependent macrophage activation, particularly through NO production. We demonstrate that NO production is initially induced by HSP70 on the apoptotic cell surface, and is further enhanced by macrophage phagocytosis. Additionally, we found that apoptot...

journal_title：FEBS letters

authors： Song S,Zhou F,Chen WR,Xing D

更新日期：2013-01-16 00:00:00

abstract：:Steady-state kinetic analysis was performed on the reaction between D-fructose and ferricyanide with the quinohemoprotein fructose dehydrogenase from Gluconobacter species. The D-fructose oxidation dependence on the ferricyanide concentration resulted in a series of parallel reciprocal plots, and the reaction was assu...

journal_title：FEBS letters

authors： Marcinkeviciene J,Johansson G

更新日期：1993-02-22 00:00:00

abstract：:Recent studies have implicated that a GTP-binding protein (G-protein) is involved in the coupling of both CCK-8 and muscarinic cholinergic receptors to phosphoinositidase C (PIC) in the human embryonic pituitary cell line, Flow 9000. Pretreatment of these cells with cholera toxin, but not pertussis toxin, inhibited th...

journal_title：FEBS letters

authors： Lo WW,Hughes J

更新日期：1987-08-17 00:00:00