Competition between Fibrillation and Induction of Vesicle Fusion for the Membrane-Associated 40-Residue β-Amyloid Peptides.

abstract：:The non-typeable Haemophilus influenzae strain DH1 was isolated from a 25 year old male patient with Fisher syndrome, a postinfectious autoimmune condition characterized by the presence of anti-GQ1b IgG antibodies that target and initiate damage to peripheral nerves. DH1 was found to display an alphaNeuAc(2-8)alphaNeu...

journal_title：Biochemistry

authors： Houliston RS,Koga M,Li J,Jarrell HC,Richards JC,Vitiazeva V,Schweda EK,Yuki N,Gilbert M

更新日期：2007-07-10 00:00:00

abstract：:Interaction between aggregates of amyloid beta protein (Abeta) and membranes has been hypothesized by many to be a key event in the mechanism of neurotoxicity associated with Alzheimer's disease (AD). Proposed membrane-related mechanisms of neurotoxicity include ion channel formation, membrane disruption, changes in m...

journal_title：Biochemistry

authors： Qi W,Zhang A,Good TA,Fernandez EJ

更新日期：2009-09-22 00:00:00

abstract：:Biochemical characterization of the inhibition mechanism of Deltalac-acetogenins synthesized in our laboratory indicated that they are a new type of inhibitor of bovine heart mitochondrial NADH-ubiquinone oxidoreductase (complex I) [Murai, M., et al. (2006) Biochemistry 45, 9778-9787]. To identify the binding site of ...

journal_title：Biochemistry

authors： Kakutani N,Murai M,Sakiyama N,Miyoshi H

更新日期：2010-06-15 00:00:00

abstract：:We have previously shown that introduction of an engineered Met160 residue in ascorbate peroxidase (S160M variant) leads to the formation of a covalent link between Met160 and the heme vinyl group [Metcalfe, C. L., et al. (2004) J. Am. Chem. Soc. 126, 16242-16248]. In this work, we have used electronic spectroscopy, H...

journal_title：Biochemistry

authors： Pipirou Z,Bottrill AR,Svistunenko DA,Efimov I,Basran J,Mistry SC,Cooper CE,Raven EL

更新日期：2007-11-20 00:00:00

abstract：:For nonspecific binding of oligopeptides and other cationic ligands, including proteins, to nucleic acid oligomers, we develop a model capable of quantifying and predicting the salt concentration dependence of the binding free energy (deltaG(o)obs) by way of an analytic treatment of the Coulombic end effect (CEE). Lig...

journal_title：Biochemistry

authors： Shkel IA,Ballin JD,Record MT Jr

更新日期：2006-07-11 00:00:00

abstract：:The biosynthesis of epothilones, a family of hybrid polyketide (PK)/nonribosomal peptide (NRP) antitumor agents, provides an ideal system to study a hybrid PK/NRP natural product with significant biomedical value. Here the third enzyme involved in epothilone production, the five domain 195 kDa polyketide synthase (PKS...

journal_title：Biochemistry

authors： O'Connor SE,Chen H,Walsh CT

更新日期：2002-04-30 00:00:00

abstract：:The physical origin of the extremely high thermal stability of tetraether liposomes composed of the polar lipid fraction E (PLFE) from the thermoacidophilic archaebacterium Sulfolobus acidocaldarius has been investigated. The leakage rate of trapped 5, 6-carboxyfluorescein (5(6)CF) and the proton permeability in PLFE ...

journal_title：Biochemistry

authors： Komatsu H,Chong PL

更新日期：1998-01-06 00:00:00

abstract：:The serotonin transporter (SERT) is a member of a highly homologous family of proteins responsible for the reuptake of biogenic amines from the synaptic cleft. We took advantage of native restriction sites in SERT to construct a chimeric transporter containing a small (34 amino acid) region of the norepinephrine trans...

journal_title：Biochemistry

authors： Stephan MM,Chen MA,Penado KM,Rudnick G

更新日期：1997-02-11 00:00:00

abstract：:Oxalate:ferredoxin oxidoreductase (OOR) is an unusual member of the thiamine pyrophosphate (TPP)-dependent 2-oxoacid:ferredoxin oxidoreductase (OFOR) family in that it catalyzes the coenzyme A (CoA)-independent conversion of oxalate into 2 equivalents of carbon dioxide. This reaction is surprising because binding of C...

journal_title：Biochemistry

authors： Pierce E,Mansoorabadi SO,Can M,Reed GH,Ragsdale SW

更新日期：2017-06-06 00:00:00

abstract：:Binding studies of the interaction of immobilized 1alpha- and 17alpha-aminoalkyl derivatives of 5alpha-dihydrotestosterone (DHT) with purified N-deglycosylated homodimeric human sex hormone-binding globulin (SHBG) were performed using a surface plasmon resonance biosensor. These 1alpha- and 17alpha-derivatives with sp...

journal_title：Biochemistry

authors： Metzger J,Schnitzbauer A,Meyer M,Söder M,Cuilleron CY,Hauptmann H,Huber E,Luppa PB

更新日期：2003-11-25 00:00:00

abstract：:Chorismate mutase catalyzes the first committed step toward the biosynthesis of the aromatic amino acids, phenylalanine and tyrosine. While this biosynthetic pathway exists exclusively in the cell cytoplasm, the Mycobacterium tuberculosis enzyme has been shown to be secreted into the extracellular medium. The secretor...

journal_title：Biochemistry

authors： Qamra R,Prakash P,Aruna B,Hasnain SE,Mande SC

更新日期：2006-06-13 00:00:00

abstract：:Cathepsin K is a cysteine protease present in human osteoclasts that plays an important role in bone resorption. Cathepsin K is synthesized as an inactive proenzyme and activated under conditions of low pH. Autoproteolytic processing of the N-terminal 99 amino acid propeptide produces the active, mature form of cathep...

journal_title：Biochemistry

authors： LaLonde JM,Zhao B,Janson CA,D'Alessio KJ,McQueney MS,Orsini MJ,Debouck CM,Smith WW

更新日期：1999-01-19 00:00:00

abstract：:Human acidic mammalian chitinase (AMCase), a member of the family 18 glycosyl hydrolases, is one of the important proteins involved in Th2-mediated inflammation and has been implicated in asthma and allergic diseases. Inhibition of AMCase results in decreased airway inflammation and airway hyper-responsiveness in a mo...

journal_title：Biochemistry

authors： Chou YT,Yao S,Czerwinski R,Fleming M,Krykbaev R,Xuan D,Zhou H,Brooks J,Fitz L,Strand J,Presman E,Lin L,Aulabaugh A,Huang X

更新日期：2006-04-11 00:00:00

abstract：:X-ray crystallographic data have implicated Arg-292 as the residue responsible for the preferred side-chain substrate specificity of aspartate aminotransferase. It forms a salt bridge with the beta or gamma carboxylate group of the substrate [Kirsch, J. F., Eichele, G., Ford, G. C., Vincent, M. G., Jansonius, J. N., G...

journal_title：Biochemistry

authors： Cronin CN,Kirsch JF

更新日期：1988-06-14 00:00:00

abstract：:The primary subsite specificities of human leukocyte elastase, cathepsin G, porcine pancreatic elastase, rat mast cell proteases I and II, bovine chymotrypsin A alpha, and the protease from strain V-8 of Staphylococcus aureus have been mapped with a series of tripeptide thiobenzyl ester substrates of the general formu...

journal_title：Biochemistry

authors： Harper JW,Cook RR,Roberts CJ,McLaughlin BJ,Powers JC

更新日期：1984-06-19 00:00:00

abstract：:PDZ (acronym of the synapse-associated protein PSD-95/SAP90, the septate junction protein Discs-large, and the tight junction protein ZO-1) domains are abundant small globular protein interaction domains that mainly recognize the carboxyl termini of their target proteins. Detailed knowledge on PDZ domain binding speci...

journal_title：Biochemistry

authors： van den Berk LC,Landi E,Walma T,Vuister GW,Dente L,Hendriks WJ

更新日期：2007-11-27 00:00:00

abstract：:Standard preparations of Escherichia coli RNA polymerase harbor a 70 kDa protein with NTPase (beta-gamma cleavage) activity that is not a recognized polymerase subunit. The NTPase activity of this component, before and after separation from the polymerase, is strongly dependent on the presence of DNA; single-stranded ...

journal_title：Biochemistry

authors： Butzow JJ,Garland C,Van Lee L,Eichhorn GL

更新日期：1997-12-02 00:00:00

abstract：:The S-adenosylmethionine (SAM) riboswitch is one of the most recurrent riboswitches found in bacteria and has three known different natural aptamers. The Bacillus subtilis yitJ SAM riboswitch aptamer is organized around a four-way junction which is characterized by the presence of a pseudoknot and a K-turn motif. By r...

journal_title：Biochemistry

authors： Heppell B,Lafontaine DA

更新日期：2008-02-12 00:00:00

abstract：:Neuraminidase is one of the two glycoprotein spikes protruding from the influenza virus membrane. We have determined by X-ray crystallography the native structure of B/Lee/40 neuraminidase (NA) and the structures of its crystals soaked with a substrate, N-acetylneuraminyllactose (NANL), and an inhibitor, 2-deoxy-2,3-d...

journal_title：Biochemistry

authors： Janakiraman MN,White CL,Laver WG,Air GM,Luo M

更新日期：1994-07-12 00:00:00

abstract：:Coupling of bovine carboxypeptidase A with diazotized 5-amino-1H-tetrazole increases esterase activity, decreases peptidase activity slightly, and modifies one tyrosyl residue. Subsequent nitration of the azoenzyme has no further effect on esterase activity, decreases peptidase activity markedly, and modifies a second...

journal_title：Biochemistry

authors： Cueni L,Riordan JF

更新日期：1978-05-16 00:00:00

abstract：:Lamin A protein, encoded by the LMNA gene, belongs to the type V intermediate filament protein family and is a major nuclear protein component of higher metazoan organisms, including humans. Lamin A along with B-type lamins impart structural rigidity to the nucleus by forming a lamina that is closely apposed to the in...

journal_title：Biochemistry

authors： Bhattacharjee P,Banerjee A,Banerjee A,Dasgupta D,Sengupta K

更新日期：2013-06-18 00:00:00

abstract：:An NMR and nuclear Overhauser effect (NOE) analysis of Thermus thermophilus tRNAIle1a is presented. This species contains modifications including s2T54 and s4U8 [Horie, N., Hara-Yokoyama, M., Yokoyama, S., Watanabe, K., Kuchino, Y., Nishimura, S., & Miyazawa, T. (1985) Biochemistry 24, 5711-5715]. All the expected sec...

journal_title：Biochemistry

authors： Choi BS,Redfield AG

更新日期：1986-04-08 00:00:00

abstract：:The reactions of metmyoglobin (metMb) and methemoglobin (metHb), oxidized to their respective oxoferryl free radical species (.Mb-FeIV = O/.Hb-4FeIV = O) by tert-butyl hydroperoxide (t-BuOOH), with nitric oxide (NO.) were studied by a combination of optical, electron spin resonance (ESR), ionspray mass (MS), fluoresce...

journal_title：Biochemistry

authors： Gorbunov NV,Osipov AN,Day BW,Zayas-Rivera B,Kagan VE,Elsayed NM

更新日期：1995-05-23 00:00:00

abstract：:Kinetics of reduction of phototrophic bacterial flavocytochromes c by exogenous flavin semiquinones and fully reduced flavins generated by laser flash photolysis have been studied. The mechanisms of reduction of Chromatium and Chlorobium flavocytochromes c are more similar to one another than previously thought. Neith...

journal_title：Biochemistry

authors： Cusanovich MA,Meyer TE,Tollin G

更新日期：1985-03-12 00:00:00

abstract：:Influenza virus gains access to the cytoplasm of its host cell by means of a fusion event between viral and host cell membrane. Fusion is mediated by the envelope glycoprotein hemagglutinin (HA) and is triggered by low pH. To learn how many hemagglutinin trimers are necessary to cause membrane fusion, we have used two...

journal_title：Biochemistry

authors： Ellens H,Bentz J,Mason D,Zhang F,White JM

更新日期：1990-10-16 00:00:00

abstract：:Subfragment 1 (S1) prepared from rabbit skeletal muscle myosin was digested with trypsin to cleave the 95K heavy chain into three pieces, i.e., the 23K, 50K, and 20K fragments. The trypsin-treated S1 was then cross-linked with p-nitrophenyl iodoacetate. The cross-linker bridged one of the reactive thiols (SH2) in the ...

journal_title：Biochemistry

authors： Sutoh K,Hiratsuka T

更新日期：1988-04-19 00:00:00

abstract：:The one-for-one exchange of Cl(-) and HCO(3)(-) ions is catalyzed by human erythrocyte anion exchanger 1 (hAE1) through a ping-pong mechanism whereby the protein exists in two main conformations, with the single anion-binding site exposed at either the cytoplasmic (inner) side (E(i)) or the extracellular side (E(o)), ...

journal_title：Biochemistry

authors： Pal P,Lebedev D,Salim S,Knauf PA

更新日期：2006-05-23 00:00:00

abstract：:Living organisms have evolved a vast array of catalytic functions that make them ideally suited for the production of medicinally and industrially relevant small-molecule targets. Indeed, native metabolic pathways in microbial hosts have long been exploited and optimized for the scalable production of both fine and co...

journal_title：Biochemistry

authors： Weeks AM,Chang MC

更新日期：2011-06-21 00:00:00

abstract：:The deacetylation of UDP-3-O-[(R)-3-hydroxymyristoyl]-N-acetylglucosamine (UDP-3-O-acyl-GlcNAc) by LpxC is the committed reaction of lipid A biosynthesis. CHIR-090, a novel N-aroyl-l-threonine hydroxamic acid, is a potent, slow, tight-binding inhibitor of the LpxC deacetylase from the hyperthermophile Aquifex aeolicus...

journal_title：Biochemistry

authors： Barb AW,McClerren AL,Snehelatha K,Reynolds CM,Zhou P,Raetz CR

更新日期：2007-03-27 00:00:00

abstract：:Phenylcarbene and adamantylidene have been generated photochemically from the corresponding diazirines within lipid bilayers. Reasonable yields of labeled fatty acid side chains have been observed. The products have been characterized by gas chromatography-mass spectrometry and derive both from the insertion of the c...

journal_title：Biochemistry

authors： Bayley H,Knowles JR

更新日期：1978-06-13 00:00:00