Cooperativity and flexibility of active sites in homodimeric transketolase.

abstract：:The role of p53 as the "guardian of the genome" in differentiated somatic cells, triggering various biological processes, is well established. Recent studies in the stem cell field have highlighted a profound role of p53 in stem cell biology as well. These studies, combined with basic data obtained 20 years ago, provi...

journal_title：FEBS letters

authors： Aloni-Grinstein R,Shetzer Y,Kaufman T,Rotter V

更新日期：2014-08-19 00:00:00

abstract：:Tertiary structure models of Interleukin-6 were constructed using a routine prediction method based on the X-ray crystal structures of granulocyte colony-stimulating factor (GCSF) and leukemia inhibitory factor (LIF). The models were evaluated with the aid of the sequence-structure compatibility (3D-1D) method program...

journal_title：FEBS letters

authors： Sumikawa H,Fukuhara K,Suzuki E,Matsuo Y,Nishikawa K

更新日期：1997-03-10 00:00:00

abstract：:We have compared the urea stability of the human aromatic amino acid hydroxylases (AAAHs), key enzymes involved in neurotransmitter biosynthesis and amino acid homeostasis. Tyrosine-, tryptophan- and phenylalanine hydroxylase (TH, TPH and PAH, respectively) were transiently activated at low urea concentrations and rap...

journal_title：FEBS letters

authors： Kleppe R,Haavik J

更新日期：2004-05-07 00:00:00

abstract：:Chromogranin A is known to undergo pH induced conformational changes, and the difference in conformation is supposed to be responsible for the difference in Ca2+ binding property. To gain insight regarding the overall structure and the nature of pH-induced conformational changes of chromogranin A, limited trypsin dige...

journal_title：FEBS letters

authors： Yoo SH,Ferretti JA

更新日期：1993-11-22 00:00:00

abstract：:A gene encoding a single-chain antibody fragment directed against digoxin (named 1C10 scFv) was cloned in two expression systems. For this purpose, a new baculovirus transfer cassette fully compatible with the procaryotic pHEN vector was constructed. Baculovirus production led to higher yield than did Escherichia coli...

journal_title：FEBS letters

authors： Lemeulle C,Chardès T,Montavon C,Chaabihi H,Mani JC,Pugnière M,Cerutti M,Devauchelle G,Pau B,Biard-Piechaczyk M

更新日期：1998-02-20 00:00:00

abstract：:The effect of the inositol phospholipid-binding antibiotic neomycin was studied on high-affinity GTPase in human platelet membranes. At low concentrations (up to 1 mM), neomycin by itself stimulated a high-affinity GTPase. This GTPase stimulation was additive with that caused by the hormonal factors, prostaglandin E1 ...

journal_title：FEBS letters

authors： Herrmann E,Jakobs KH

更新日期：1988-02-29 00:00:00

abstract：:In Drosophila, the tumor suppressor Scribble is localized at the septate junctions of epithelial cells. Its mammalian homologue, hScrib, is a basolateral protein likely associated to proteins of the cell-cell junctions. We report the direct interaction between hScrib and ZO-2, a junction-associated protein. This inter...

journal_title：FEBS letters

authors： Métais JY,Navarro C,Santoni MJ,Audebert S,Borg JP

更新日期：2005-07-04 00:00:00

abstract：:The diffusion of fluorescein isothiocyanate-labelled dextran molecules in suspensions of centrifugally, tightly packed, erythrocyte ghosts was measured by fluorescence recovery after photobleaching. In comparison with diffusion in aqueous solution, the diffusion coefficients for probe molecules of varying size were ab...

journal_title：FEBS letters

authors： Järnefelt J,Laurent T,Rigler R

更新日期：1988-12-19 00:00:00

abstract：:In Saccharomyces cerevisiae, four proteins, Shu1, Shu2, Psy3 and Csm2, form a stable SHU-complex both in vivo and in vitro. These proteins are involved in the early stages of the homologous recombination DNA damage repair process. In this paper, the crystal structure of the Psy3-Csm2 sub-complex is presented at 1.8Å r...

journal_title：FEBS letters

authors： She Z,Gao ZQ,Liu Y,Wang WJ,Liu GF,Shtykova EV,Xu JH,Dong YH

更新日期：2012-07-30 00:00:00

abstract：:The two subunits of gamma-glutamyl transpeptidase (EC 2.3.2.2) are derived from a single-chain glycosylated precursor. A small fraction of the propeptide survives proteolytic processing in the rat kidney and has been purified by an immunoaffinity technique. The propeptide contains determinants for both the subunits an...

journal_title：FEBS letters

authors： Tate SS

更新日期：1986-01-01 00:00:00

abstract：:Re-analysis of the primary structure of the ribosomal RNA N-methyltransferase that confers self-resistance on the erythromycin-producing bacterium Saccharopolyspora erythraea has confirmed the presence of a C-terminal domain containing extensive repeat sequences. Nine tandem repeats can be discerned, with a decapeptid...

journal_title：FEBS letters

authors： Dhillon N,Leadlay PF

更新日期：1990-03-26 00:00:00

abstract：:The trend of the electric field and the value of the electric field flux, sensed by the superoxide substrate in the proximity of the active site, were found to be constant in three highly homologous Cu,Zn superoxide dismutases from ox, pig and sheep, which display large differences in net protein charge and distributi...

journal_title：FEBS letters

authors： Desideri A,Falconi M,Parisi V,Rotilio G

更新日期：1989-06-19 00:00:00

abstract：:The role of two positively charged amino acid residues located at the active site of Escherichia coli maltodextrin phosphorylase was investigated by site-directed mutagenesis. Substitution of Lys539 by an arginine caused a 600-fold reduction, substitution of Arg534 by a glutamine caused an even larger 7000-fold reduct...

journal_title：FEBS letters

authors： Schinzel R,Drueckes P

更新日期：1991-07-29 00:00:00

abstract：:We have reported previously on the ability of Lactobacillus reuteri to produce a compound with vitamin B(12) activity. Here we report on the chemical characterisation of this corrinoid-like molecule. High performance liquid chromatography coupled to an ultraviolet diode array detector, mass spectrometry and nuclear ma...

journal_title：FEBS letters

authors： Santos F,Vera JL,Lamosa P,de Valdez GF,de Vos WM,Santos H,Sesma F,Hugenholtz J

更新日期：2007-10-16 00:00:00

abstract：:Subclinical inflammation is a candidate etiological factor in the pathogenesis of metabolic syndrome and in the progression of atherosclerosis. A central role for activated macrophages has been elucidated recently as important regulators of the inflammatory process in atherosclerosis. Macrophage differentiation and fu...

journal_title：FEBS letters

authors： Szanto A,Roszer T

更新日期：2008-01-09 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：:It was believed that there was no natural suppressor tRNA in Escherichia coli, however, it has been suggested that selC, relating to the synthesis of formate dehydrogenase of a selenoprotein [(1988) Nature 331, 723-725], codes for tRNA, even though the presence of tRNA has not yet been demonstrated. We detected the pr...

journal_title：FEBS letters

authors： Mizutani T,Maruyama N,Hitaka T,Sukenaga Y

更新日期：1989-04-24 00:00:00

abstract：:Trypsin immobilized on collagen membranes has been used to digest accessible ribosomal proteins of rat liver 40 S subunits. Six proteins (S2, S6, S10, S14, S15 and S25) have been found to be highly exposed on the surface of 40 S particles. They appear to be in close physical contact and localized in the same region of...

journal_title：FEBS letters

authors： Marion MJ,Marion C

更新日期：1988-05-23 00:00:00

abstract：:The immunosuppressive agent FK-506 has received much attention due to its efficacy and potency in the areas of transplant rejection and autoimmune disease. Calcineurin, a Ca(2+)-calmodulin activated phosphatase, was recently implicated in the immunosuppressive mechanism of FK-506. In our ongoing search for superior im...

journal_title：FEBS letters

authors： Kawai M,Lane BC,Hsieh GC,Mollison KW,Carter GW,Luly JR

更新日期：1993-01-25 00:00:00

abstract：:Insulin causes a translocation of glucose transporters from intracellular microsomes to the plasma membrane in adipocytes. To determine whether insulin has a similar effect in rat hindlimb muscles, we used glucose-inhibitable cytochalasin B binding to estimate the number of glucose transporters in membrane fractions f...

journal_title：FEBS letters

authors： Klip A,Ramlal T,Young DA,Holloszy JO

更新日期：1987-11-16 00:00:00

abstract：:The covalent structure and most of the stereochemistry of the pseudomycins, bioactive metabolites of a transposon-generated mutant of a Pseudomonas syringae wild-type strain proposed for the biological control of Dutch elm disease, have been determined. While two pseudomycins are identical to the known syringopeptins ...

journal_title：FEBS letters

authors： Ballio A,Bossa F,Di Giorgio D,Ferranti P,Paci M,Pucci P,Scaloni A,Segre A,Strobel GA

更新日期：1994-11-21 00:00:00

abstract：:Nitrogen dioxide (NO2.) is often present in inhaled air and may be generated in vivo from nitric oxide. Exposure of human blood plasma to NO2. caused rapid losses of ascorbic acid, uric acid and protein thiol groups, as well as lipid peroxidation and depletions of alpha-tocopherol, bilirubin and ubiquinol-10. No incre...

journal_title：FEBS letters

authors： Halliwell B,Hu ML,Louie S,Duvall TR,Tarkington BK,Motchnik P,Cross CE

更新日期：1992-11-16 00:00:00

abstract：:The addition of hepatocyte growth factor (HGF) to rat hepatocytes in primary culture resulted in the formation of inositol 1,4,5-trisphosphate (Ins(1,4,5)P3) and 1,2-diacylglycerol (DG) by a phosphoinositide-specific phospholipase C (PI-PLC). DG showed a biphasic increase; the first phase, corresponding with the peak ...

journal_title：FEBS letters

authors： Osada S,Nakashima S,Saji S,Nakamura T,Nozawa Y

更新日期：1992-02-10 00:00:00

abstract：:Ribosomal protection proteins (RPPs) confer bacterial resistance to tetracycline by releasing this antibiotic from ribosomes stalled in protein synthesis. RPPs share structural similarity to elongation factor G (EF-G), which promotes ribosomal translocation during normal protein synthesis. We constructed and functiona...

journal_title：FEBS letters

authors： Thakor NS,Nechifor R,Scott PG,Keelan M,Taylor DE,Wilson KS

更新日期：2008-04-16 00:00:00

abstract：:The polyketide synthase associated with the biosynthesis of enediyne-containing calicheamicin contains a putative phosphopantetheinyl transferase (PPTase) domain. By cloning and expressing the C-terminal region of the polyketide synthase and in vitro phosphopantetheinylation assay, we found that the PPTase domain exhi...

journal_title：FEBS letters

authors： Murugan E,Liang ZX

更新日期：2008-04-02 00:00:00

abstract：:A new enzyme catalyzing the deamidation of seed storage proteins was found in germinating wheat grains and was partially purified. It also acts on egg lysozyme, horse hemoglobin and reduced RNAse, glutamine and Gly-L-Gln-L-Tyr. No activity was observed when using ovalbumin, serum albumin, RNAse, insulin, asparagine an...

journal_title：FEBS letters

authors： Vaintraub IA,Kotova LV,Shaha R

更新日期：1992-05-11 00:00:00

abstract：:We have set up a model system for familial amyotrophic lateral sclerosis (FALS) by transfecting human neuroblastoma cell line SH-SY5Y with plasmids directing constitutive expression of either wild-type human Cu,Zn superoxide dismutase (Cu,ZnSOD) or a mutant of this enzyme (G93A) associated with FALS. We have tested mi...

journal_title：FEBS letters

authors： Carrì MT,Ferri A,Battistoni A,Famhy L,Gabbianelli R,Poccia F,Rotilio G

更新日期：1997-09-08 00:00:00

abstract：:Germ-line mutations in BRCA1 are associated with an increased lifetime risk of developing breast and/or ovarian tumors. The BRCA1 gene product is a 220-kDa protein that contains a tandem of two BRCA1 C-terminal (BRCT) domains required for transcription. In an attempt to understand how BRCA1 exerts its function through...

journal_title：FEBS letters

authors： Yan J,Zhu J,Zhong H,Lu Q,Huang C,Ye Q

更新日期：2003-10-09 00:00:00

abstract：:The role of Na+/H+ exchange in protein kinase C-mediated effects in platelets was investigated by studying the effect of removal of extracellular Na+ ([Na+]e) on the different responses induced by phorbol 12-myristate 13-acetate (PMA) and 1,2-dioctanoylglycerol (diC8). None of the responses studied, namely, protein ph...

journal_title：FEBS letters

authors： Krishnamurthi S,Patel Y,Morgan WA,Wheeler-Jones CP,Kakkar VV

更新日期：1989-07-31 00:00:00

abstract：:Methylation of cytosine-residues in the sequence CpG affects the expression of many genes and generally correlates with reduced transcription. The ribosomal genes of Xenopus laevis were among the first genes to be studied with respect to their DNA methylation, and a loss of methylation during embryonic development cor...

journal_title：FEBS letters

authors： Labhart P

更新日期：1994-12-19 00:00:00