Tc1, from Tityus cambridgei, is the first member of a new subfamily of scorpion toxin that blocks K(+)-channels.

abstract：:We have previously shown that Rap1 as well as its guanine nucleotide exchange factor Epac1 increases cell-cell junction formation. Here, we show that activation of Epac1 with the exchange protein directly activated by cAMP (Epac)-specific cAMP analog 8CPT-2'O-Me-cAMP (007) resulted in a tightening of the junctions and...

journal_title：FEBS letters

authors： Kooistra MR,Corada M,Dejana E,Bos JL

更新日期：2005-09-12 00:00:00

abstract：:We transfected the COS-7 cells with cDNAs encoding different human somatostatin receptor (hSSTR) subtypes, and found that hSSTR subtypes mediate not only the inhibition of forskolin-induced cAMP accumulation but also the stimulation of phospholipase C (PLC) and Ca2+ mobilization. Activation of PLC by 1 microM somatost...

journal_title：FEBS letters

authors： Akbar M,Okajima F,Tomura H,Majid MA,Yamada Y,Seino S,Kondo Y

更新日期：1994-07-11 00:00:00

abstract：:The SEC10 gene product is a member of the Exocyst complex essential for exocytosis in the budding yeast Saccharomyces cerevisiae. We report here the cloning and characterization of human Sec10p (hSec10p; GenBank accession number U85946). hSec10p is a 77-kDa protein with 23% amino acid identity to yeast Sec10p and 37% ...

journal_title：FEBS letters

authors： Guo W,Roth D,Gatti E,De Camilli P,Novick P

更新日期：1997-03-10 00:00:00

abstract：:Human SRC encodes the non-receptor tyrosine kinase pp60(c-Src), which is activated in many human colon cancer cell lines (HCCLs) and tumors. We found that both c-Src protein and mRNA levels were elevated in a subset of HCCLs. Increased c-Src mRNA and protein levels correlated strongly with increased c-Src kinase activ...

journal_title：FEBS letters

authors： Dehm S,Senger MA,Bonham K

更新日期：2001-01-05 00:00:00

abstract：:Vav functions as a specific GDP/GTP nucleotide exchange factor which is regulated by tyrosine phosphorylation in the hematopoietic system. Loss of the amino-terminus sequences of Vav was sufficient to control its transforming potential and its function in T cells. We report here the identification of the hematopoietic...

journal_title：FEBS letters

authors： Groysman M,Russek CS,Katzav S

更新日期：2000-02-04 00:00:00

abstract：:The MAP kinase module (Raf/MAPKKK-MAPKK-MAPK) has been shown to be sequentially activated after mitogenic stimulation. Here we demonstrate, by site directed mutagenesis, that MAPK is able to retrophosphorylate its own activator, MAPKK, on two threonine residues Thr-292 and Thr-386 in vitro, and that these sites are al...

journal_title：FEBS letters

authors： Brunet A,Pagès G,Pouysségur J

更新日期：1994-06-13 00:00:00

abstract：:Over 400 human proteases documented in secondary databases can already be delineated in genomic sequence. A Genome Ontology annotation of 30585 sequences in the provisional human proteome set recognises 498 proteases, i.e. 1.6%. Homology searches against finished sequence and comparisons between mouse and zebrafish ar...

journal_title：FEBS letters

authors： Southan C

更新日期：2001-06-08 00:00:00

abstract：:The 5 alpha-reductase activities in human prostatic nuclei and microsomes were compared. The activities in both subcellular fractions were identical with respect to pH dependence, heat inactivation and Michaelis constants for NADPH and testosterone. Subcellular distribution studies using DNA and nicotinamide mononucle...

journal_title：FEBS letters

authors： Houston B,Chisholm GD,Habib FK

更新日期：1985-06-17 00:00:00

abstract：:The conserved KTG triad in the class C beta-lactamase from Citrobacter freundii GN346 was examined as to its function by means of site-directed mutagenesis. The following conversions were performed; Lys-315 to arginine, alanine or glutamic acid, Thr-316 to valine, and Gly-317 to alanine, proline or isoleucine. The res...

journal_title：FEBS letters

authors： Tsukamoto K,Nishida N,Tsuruoka M,Sawai T

更新日期：1990-10-01 00:00:00

abstract：:Mitochondrial fatty acid synthesis is catalyzed by a dissociated fatty acid synthase similar to those of plant plastids and bacteria. The crystal structure of a mitochondrial beta-ketoacyl-[acyl carrier protein] synthase (mtKAS), namely that from Arabidopsis thaliana, has been determined for the first time. This enzym...

journal_title：FEBS letters

authors： Olsen JG,Rasmussen AV,von Wettstein-Knowles P,Henriksen A

更新日期：2004-11-05 00:00:00

abstract：:The adipose-derived plasma protein, adiponectin (APN), has various protective effects on cardiovascular diseases. In this study, we show that endogenous APN is required for full cyclooxygenase-2 (COX-2) induction by ischemia-reperfusion injury in the heart in vivo. In rat neonatal cardiac myocytes, APN-induced COX-2 e...

journal_title：FEBS letters

authors： Ikeda Y,Ohashi K,Shibata R,Pimentel DR,Kihara S,Ouchi N,Walsh K

更新日期：2008-04-02 00:00:00

abstract：:We have used HPLC techniques to investigate the effects of gp120 upon inositol phosphate turnover in Jurkat E6-1 CD4+ T-cells, to pursue previous reports that this viral coat protein: (a) inhibits receptor-activated inositol phosphate release; (b) stimulates basal inositol phosphate release; (c) inhibits inositol poly...

journal_title：FEBS letters

authors： Sumner MT,Shears SB

更新日期：1997-08-11 00:00:00

abstract：:The rotary motion in response to ATP hydrolysis of the ring of c subunits of the membrane portion, F(o), of ATP synthase, F(o)F(1), is still under contention. It was studied with EF(o)EF(1) (Escherichia coli) using microvideography with a fluorescent actin filament. To overcome the limited specificity of actin attachm...

journal_title：FEBS letters

authors： Pänke O,Gumbiowski K,Junge W,Engelbrecht S

更新日期：2000-04-21 00:00:00

abstract：:In photosynthetic reaction centers, the excitation with light leads to the formation of a charge separated state across the photosynthetic membrane. For the reaction center of purple non-sulphur bacteria, it was previously generally assumed that this primary charge separation could only start with the excitation of th...

journal_title：FEBS letters

authors： van Brederode ME,van Grondelle R

更新日期：1999-07-16 00:00:00

abstract：:The increase of hepatic apolipoprotein B (apoB) mRNA editing during rat development was not affected by hypothyroidism. Furthermore, the addition of 3,3',5'-triiodothyronine (T3) to cultured hepatocytes taken from fetal, neonatal and adult rats had no effect on apoB mRNA editing. In contrast, dexamethasone markedly st...

journal_title：FEBS letters

authors： Lorentz A,Plonné D,Schulze HP,Dargel R

更新日期：1996-08-05 00:00:00

abstract：:The genes for the hypothalamic hormones vasopressin and oxytocin are located in close proximity to each other within the rat genome. They are separated by only approx. 11 kbp of DNA sequence and oriented in such a way that their transcription occurs on opposite DNA strands. Although the two genes are structurally very...

journal_title：FEBS letters

authors： Mohr E,Bahnsen U,Kiessling C,Richter D

更新日期：1988-12-19 00:00:00

abstract：:1,2-Didecanoylglycerol (diC10) is taken up by human platelets and sequentially converted to 1,2-didecanoylphosphatidic acid (PA10) and 1,2-didecanoylphosphatidylinositol (PI10). Agents that increase cyclic AMP in platelets, such as prostacyclin and forskolin, sequentially convert diC10 to PA10 and PI10. They decrease ...

journal_title：FEBS letters

authors： Lapetina EG

更新日期：1986-01-20 00:00:00

abstract：:Prodigiosin 25-C inhibited the accumulation of 3-(2,4-dinitroanilino)-3'-amino-N-methyldipropylamine and acridine orange in the acidic compartments of baby hamster kidney cells with little perturbation of cellular ATP levels. In rat liver lysosomes, prodigiosin 25-C inhibited the proton pump activity with an IC50 of a...

journal_title：FEBS letters

authors： Kataoka T,Muroi M,Ohkuma S,Waritani T,Magae J,Takatsuki A,Kondo S,Yamasaki M,Nagai K

更新日期：1995-02-06 00:00:00

abstract：:The 23-residue synthetic peptide representing the N-terminus of HIV-1 gp41 is known to induce either leakage or fusion of lipid vesicles depending on the experimental conditions. In this paper we report that a polar amino acid substitution V-->E at position 2, known to block gp41 activity in vivo, makes the peptide un...

journal_title：FEBS letters

authors： Pereira FB,Goñi FM,Nieva JL

更新日期：1995-04-03 00:00:00

abstract：:The cyclic, imido acid containing pentapeptides cyclo(Asp-Trp-(NMe)Nle-Asp-Phe) (cpp[NMeNle(3)]) and cyclo(Asp-Trp-Pro-Asp-Phe) (cpp[Pro(3)]) have been investigated by 1H-NMR spectroscopy in DMSO and by restrained molecular dynamics methods. The spectra indicate the existence of at least four cis/trans isomers for cpp...

journal_title：FEBS letters

authors： Weisshoff H,Wieprecht T,Henklein P,Frömmel C,Antz C,Mügge C

更新日期：1996-06-03 00:00:00

abstract：:The ATP synthase capacity of rat heart myocytes can be measured in sonicates of cultured cardiomyocytes. In these cells, transitions in ATP synthase capacity occur on changing to the anoxic or uncoupled state (drop in ATP synthase capacity of over 40%) or on electrically stimulating the cells to contract (rise of 70%)...

journal_title：FEBS letters

authors： Das AM,Harris DA

更新日期：1989-10-09 00:00:00

abstract：:To gain insight into the nuclear organization of the mouse Ig kappa locus and how it may relate to the formation of synapses during recombination, we have studied the kinetics of rearrangement of different V kappa gene families to J kappa gene segments in the pre-B cell line, 103bcl2. Remarkably, V kappa gene families...

journal_title：FEBS letters

authors： Li S,Garrard WT

更新日期：2003-02-11 00:00:00

abstract：:Hepatitis B virus X protein is a major factor in the HBV-induced disease developments. Stromal cell-derived factor-1 is a small cytokine that is strongly chemotactic for lymphocytes. We explored the role of HBx on recruitment of HBV-induced virus-nonspecific immune cells into liver. Immune cell recruitment and SDF-1 e...

journal_title：FEBS letters

authors： Cho HK,Kim SY,Seong JK,Cheong J

更新日期：2014-03-03 00:00:00

abstract：:A novel type IV collagen-degrading metalloproteinase was purified from the conditioned media of a murine metastatic sarcoma cell line. The molecular weight of the purified enzyme was determined to be 100 kDa by SDS-PAGE, while 700 kDa by gel filtration suggesting that the enzyme has a multimer structure. This enzyme d...

journal_title：FEBS letters

authors： Kato Y,Ogawa K,Yamamoto S,Abe S,Kishi J,Hayakawa T

更新日期：1990-07-30 00:00:00

abstract：:Local bending propensity and curvature of DNA can be characterized using a vector description of DNA bendability, based on a set of parameters derived from deoxyribonuclease I (DNase I) cleavage experiments. Two characteristics-arithmetic and vector averages of bendability-were successfully used to predict experimenta...

journal_title：FEBS letters

authors： Gabrielian A,Simoncsits A,Pongor S

更新日期：1996-09-09 00:00:00

abstract：:Several lines of evidence led to the conclusion that mammalian ribosomal protein synthesis is a highly organized biological process in vivo. A wealth of data support the concept according to which tRNA aminoacylation, formation of the ternary complex on EF1A and delivery of aminoacyl-tRNA to the ribosome is a processi...

journal_title：FEBS letters

authors： Mirande M

更新日期：2010-01-21 00:00:00

abstract：:In this study, we demonstrated that laminin-1 (LM-1) induces neurite outgrowth and enhances the expression of neurofilament-L and MAP2 in human bone marrow mesenchymal stem cells (MSCs). The c-Jun transcription factor was strongly activated by LM-1 during neurite induction. Suppression of c-Jun inhibited the expressio...

journal_title：FEBS letters

authors： Mruthyunjaya S,Rumma M,Ravibhushan G,Anjali S,Padma S

更新日期：2011-06-23 00:00:00

abstract：:Telomerase is an almost universal cancer target that consists minimally of a core protein human telomerase reverse transcriptase (hTERT) and a RNA component human telomerase RNA (hTR). Some inhibitors of this enzyme are thought to function by the covalent binding to one or several cysteine residues; however, this inhi...

journal_title：FEBS letters

authors： Kellermann G,Dingli F,Masson V,Dauzonne D,Ségal-Bendirdjian E,Teulade-Fichou MP,Loew D,Bombard S

更新日期：2017-03-01 00:00:00

abstract：:Structural analogs of adenosine 5'-acylphosphates, which are intermediates of the reaction catalyzed by acyl-CoA synthetases, were synthesized by condensing primary alcohols with AMP to examine the inhibitory effects on the lignoceroyl-CoA and palmitoyl-CoA synthetase activities. Hexadecyl, octadecyl, eicosyl, docosyl...

journal_title：FEBS letters

authors： Shiraishi T,Tezuka K,Uda Y

更新日期：1994-10-03 00:00:00

abstract：:The glucagon-like peptide 1 (7-37)/(7-36) amide (GLP-1) receptor belongs to a new subclass of seven transmembrane domain, G-protein coupled receptors comprising several receptors for peptide hormones. The receptors of this family share many common motifs including a relatively large N-terminal extracellular domain. Th...

journal_title：FEBS letters

authors： Wilmen A,Göke B,Göke R

更新日期：1996-11-25 00:00:00