Evidence for a novel set of small heat-shock proteins that associates with the mitochondria of murine PC12 cells and protects NADH:ubiquinone oxidoreductase from heat and oxidative stress.

abstract：:This work reports the first functional characterization of leishmanial PEPCK. The recombinant Leishmania major enzyme (Lmj_PEPCK) exhibits equivalent kcat values for the phosphoenolpyruvate (PEP) and oxaloacetate (OAA) forming reactions. The apparent Km towards OAA is 10-fold lower than that for PEP, while the Km valu...

journal_title：Archives of biochemistry and biophysics

authors： Sosa MH,Giordana L,Nowicki C

更新日期：2015-10-01 00:00:00

abstract：:To study the relationship between neutral aminopeptidase activity and hemoglobin accumulation in malaria parasites, we treated mice infected with Plasmodium berghei NYU-2 with chloroquine intraperitoneally in doses ranging from 0.3 to 3 micromol per 25 g mouse. Preparations of infected erythrocytes (normalized to repr...

journal_title：Archives of biochemistry and biophysics

authors： Fitch CD,Cai GZ,Chen YF,Ryerse JS

更新日期：2003-02-15 00:00:00

abstract：:Caffeic acid O-methyltransferase (COMT) is one of a group of proteins present in alfalfa cell cultures which can be photoaffinity labeled with S-adenosyl-L-[methyl-3H]methionine. The enzyme was purified to homogeneity from elicitor-treated suspension cultures and shown to exist as an active monomer of subunit Mr 41,00...

journal_title：Archives of biochemistry and biophysics

authors： Edwards R,Dixon RA

更新日期：1991-06-01 00:00:00

abstract：:Nucleotide Binding Domains (NBDs) are responsible for the ATPase activity of the multidrug resistance protein 1 (MRP1). A series of NBD1-linker-NBD2 chimeric fusion proteins were constructed, expressed and purified, and their ATPase activities were analyzed. We report here that a GST linked NBD1(642-890)-GST-NBD2(1286...

journal_title：Archives of biochemistry and biophysics

authors： Wan L,Liang X,Huang Y

更新日期：2009-05-15 00:00:00

abstract：:A preliminary study (J.M. Mata, R. Assad, and B. Peterkofsky (1981) Arch. Biochem. Biophys. 206, 93-104) suggested that chick embryo limb bone microsomes took up and concentrated [14C]ascorbate in the presence of cofactors for prolyl hydroxylase. In the present study, we found that the apparent Km for ascorbate in the...

journal_title：Archives of biochemistry and biophysics

authors： Peterkofsky B,Tschank G,Luedke C

更新日期：1987-04-01 00:00:00

abstract：:Phorbol esters induce rapid downregulation of PAF receptors on human neutrophils. The molecular mechanism responsible for this observation has not been elucidated. In the present study, treatment of neutrophils with PMA (10(-7) M) for 10 min caused a complete loss of PAF receptors from the cell surface as determined b...

journal_title：Archives of biochemistry and biophysics

authors： Zhou W,Olson MS

更新日期：1994-08-15 00:00:00

abstract：:Prior exposure of guinea pig macrophages to LPS (lipopolysaccharide) resulted in reduced cAMP-generating responses to prostaglandin E1 and epinephrine. LPS-induced refractoriness was diminished when LPS treatment was carried out in the presence of an inhibitor of prostaglandin synthesis, hydrocortisone, or indomethaci...

journal_title：Archives of biochemistry and biophysics

authors： Hazeki K,Mori Y,Ui M

更新日期：1986-05-01 00:00:00

abstract：:A novel bioluminescence-based solid-phase assay is described for the enzyme GDPFuc:Gal(beta)1-3GlcNAc (Fuc to GlcNAc) alpha1,4-fucosyltransferase (alpha1,4FT), which generates the Lewis a blood group antigen (Le(a)) (Gal(beta)1-3[Fuc(alpha)1-4]GlcNAc-R). Lacto-N-tetraose (LNT,Ga ta)1-3GlcNAc(beta)1-3Gal(beta)1-4Glc) w...

journal_title：Archives of biochemistry and biophysics

authors： DeBose-Boyd RA,Nyame AK,Smith DF,Cummings RD

更新日期：1996-11-01 00:00:00

abstract：:DNA damage has been postulated as a mechanism of neuronal death in Parkinson's disease (PD). In the present study, genomic DNA was isolated from eight brain regions (frontal, temporal, and occipital cortex, hippocampus, caudate/putamen, thalamus, cerebellum, and midbrain) from five neuropathologically confirmed cases ...

journal_title：Archives of biochemistry and biophysics

authors： Hegde ML,Gupta VB,Anitha M,Harikrishna T,Shankar SK,Muthane U,Subba Rao K,Jagannatha Rao KS

更新日期：2006-05-15 00:00:00

abstract：:The nature and role of intermediates have been the subject of much heated debate in the field of protein folding. Historically, intermediates were viewed as essential stepping-stones that guide a protein through the folding process to the native state. However, with the experimental identification of numerous small pr...

journal_title：Archives of biochemistry and biophysics

authors： Tsytlonok M,Itzhaki LS

更新日期：2013-03-01 00:00:00

abstract：:Rat Leydig cells in primary culture were used as a model system to investigate the effects of human chorionic gonadotropin (hCG) and dibutyryl cyclic AMP (Bt2cAMP) on the synthesis of cholesterol side chain cleavage cytochrome P-450 (cytochrome P-450scc) and the iron-sulfur protein, adrenodoxin. Leydig cells isolated ...

journal_title：Archives of biochemistry and biophysics

authors： Anderson CM,Mendelson CR

更新日期：1985-05-01 00:00:00

abstract：:Although differences in size of the right and left thyroid lobes are well defined, differences in morphology, follicles structure, cAMP production, thyrotropin receptor, and protein involved in cell signalling have not previously been reported. This study provides morpho-functional data of right and left thyroid lobes...

journal_title：Archives of biochemistry and biophysics

authors： Albi E,Curcio F,Spelat R,Lazzarini R,Loreti E,Ferri I,Ambesi-Impiombato FS

更新日期：2012-02-01 00:00:00

abstract：:A series of 18 phenacyl bromide and iodoacetamide analogues have been synthesized and used to alkylate Met-398 situated in the S'1 binding site of carboxypeptidase Y. The course of the reactions was monitored by measurements of the peptidase and esterase activities. All except four of the reagents reacted selectively,...

journal_title：Archives of biochemistry and biophysics

authors： Kanstrup A,Breddam K,Buchardt O

更新日期：1993-08-01 00:00:00

abstract：:The enzyme phenylalanine hydroxylase catalyzes the hydroxylation of excess phenylalanine in the liver to tyrosine. The enzyme is regulated allosterically by phenylalanine and by phosphorylation of Ser16. Hydrogen/deuterium exchange monitored by mass spectrometry has been used to gain insight into any structural change...

journal_title：Archives of biochemistry and biophysics

authors： Li J,Fitzpatrick PF

更新日期：2013-07-15 00:00:00

abstract：:G protein-coupled receptors can be directly modulated by changes in transmembrane voltage in a variety of cell types. Here we show that, while changes in the membrane voltage itself do not induce detectable modifications in the cytosolic Ca(2+) concentration, platelet stimulation with thrombin or the PAR-1 and PAR-4 a...

journal_title：Archives of biochemistry and biophysics

authors： Albarrán L,Dionisio N,López E,Salido GM,Rosado JA

更新日期：2013-10-15 00:00:00

abstract：:Organic hydroperoxides can replace NADPH in supporting the oxidation of ethanol by liver microsomes. Experiments were carried out to evaluate the role of hydroxyl radicals in the organic hydroperoxide-catalyzed reaction. Maximum rates of ethanol oxidation occurred in the presence of either 0.5 mM cumene hydroperoxide ...

journal_title：Archives of biochemistry and biophysics

authors： Cederbaum AI

更新日期：1983-11-01 00:00:00

abstract：:Methyl pyruvate was found to exert a dual effect on insulin release from isolated rat pancreatic islets. A positive insulinotropic action prevailed at low concentrations of D-glucose, in the 2.8 to 8.3 mM range, and at concentrations of the ester not exceeding 10.0 mM. It displayed features typical of a process of nut...

journal_title：Archives of biochemistry and biophysics

authors： Malaisse WJ,Jijakli H,Ulusoy S,Cook L,Best L,Viñambres C,Villanueva-Peñacarrillo ML,Valverde I,Sener A

更新日期：1996-11-15 00:00:00

abstract：:Pyruvate dehydrogenase (E1), an alpha(2)beta(2) tetramer, catalyzes the oxidative decarboxylation of pyruvate and reductive acetylation of lipoyl moieties of the dihydrolipoamide acetyltransferase. The roles of betaW135, alphaP188, alphaM181, alphaH15, and alphaR349 of E1 determined by kinetic analysis were reassessed...

journal_title：Archives of biochemistry and biophysics

authors： Korotchkina LG,Ciszak EM,Patel MS

更新日期：2004-09-15 00:00:00

abstract：:Pasteurella multocida is a pathogen of veterinary and medical importance. Here, we report the 1.85Å resolution crystal structure of the class C acid phosphatase from this organism (denoted rPmCCAP). The structure shows that rPmCCAP exhibits the same haloacid dehalogenase fold and dimeric assembly as the class C enzyme...

journal_title：Archives of biochemistry and biophysics

authors： Singh H,Malinski TJ,Reilly TJ,Henzl MT,Tanner JJ

更新日期：2011-05-01 00:00:00

abstract：:Diesters of 3-hydroxy C8, C10, and C12 acids, the female mallard duck pheromones, were found as the major products of the uropygial glands only during the breeding season. The 3-hydroxy acids were identified by mass spectrometry of the trimethylsilyl ethers of the methyl esters and of the diols derived from LiAlH4 red...

journal_title：Archives of biochemistry and biophysics

authors： Kolattukudy PE,Rogers L

更新日期：1987-01-01 00:00:00

abstract：:Characterization of aldose reductase purified from human placenta confirms that activation, as first analyzed in detail for the bovine enzyme, also occurs in humans. Routinely between 5 and 20% of the aldose reductase activity freshly purified from human placenta exhibits kinetic properties and insensitivity to aldose...

journal_title：Archives of biochemistry and biophysics

authors： Grimshaw CE,Lai CJ

更新日期：1996-03-01 00:00:00

abstract：:Glycosaminoglycan (GAG)-protein interactions regulate a myriad of physiologic and pathologic processes, yet an understanding of how these molecules interact is lacking. The role of the pattern and spacing of basic amino acids (arginine (R) and lysine (K)) in heparin binding sites was investigated using peptide analogs...

journal_title：Archives of biochemistry and biophysics

authors： Fromm JR,Hileman RE,Caldwell EE,Weiler JM,Linhardt RJ

更新日期：1997-07-01 00:00:00

abstract：:While prior studies focusing on male mice suggest a role for sterol carrier protein-2/sterol carrier protein-x (SCP-2/SCP-x; DKO) on hepatic phytol metabolism, its role in females is unresolved. This issue was addressed using female and male wild-type (WT) and DKO mice fed a phytoestrogen-free diet without or with 0.5...

journal_title：Archives of biochemistry and biophysics

authors： McIntosh AL,Storey SM,Huang H,Kier AB,Schroeder F

更新日期：2017-12-01 00:00:00

abstract：:Peptides are not only useful models for the structural understanding of protein folding and stability but also provide promising therapeutic avenues for the treatment of numerous diseases, and as biomaterials. The field has been very active over the last decades, but the complex conformational behaviour of peptides st...

journal_title：Archives of biochemistry and biophysics

authors： Morales P,Jiménez MA

更新日期：2019-01-01 00:00:00

abstract：:In the presence of glucose and ample oxygen, insect form African trypanosomes release pyruvate more than 100-fold more slowly than do bloodstream forms. This rate decrease could not be accounted for simply by an increased mitochondrial pyruvate oxidation rate as inhibiting mitochondrial respiration increases pyruvate ...

journal_title：Archives of biochemistry and biophysics

authors： Barnard JP,Pedersen PL

更新日期：1994-08-15 00:00:00

abstract：:Ruthenium red (RR), an ammoniated form of tris-ruthenium(III,IV,III) oxychloride, has been widely used in the micromolar range as a strong and specific inhibitor of in vitro and in vivo Ca(2+)-mediated biochemical processes without regard for its redox properties. We show here that in the presence of tert-butyl hydrop...

journal_title：Archives of biochemistry and biophysics

authors： Meinicke AR,Zavan SS,Ferreira AM,Vercesi AE,Bechara EJ

更新日期：1996-04-15 00:00:00

abstract：:The soluble enzymatic luminescent system of the dinoflagellate Pyrocystis lunula (luciferase-luciferin) is coupled with an enzymatic NAD(P)H-dependent reaction. The enzyme is a soluble reductase (Mr 47,000) which catalyzes, in the presence of NAD(P)H, the reduction of a molecule called P630. Reduced P630 has the same ...

journal_title：Archives of biochemistry and biophysics

authors： Fresneau C,Hill M,Lescure N,Arrio B,Dupaix A,Volfin P

更新日期：1986-12-01 00:00:00

abstract：:Pneumococcal surface protein A (PspA) is present on the cell wall of Streptococcus pneumoniae pathogen and has an antigenetically variable N-terminal domain. This aminoterminal domain is essential for full pneumococcal virulence, and monoclonal antibodies raised against it protect mice against pneumococcal infections....

journal_title：Archives of biochemistry and biophysics

authors： Jedrzejas MJ,Hollingshead SK,Lebowitz J,Chantalat L,Briles DE,Lamani E

更新日期：2000-01-01 00:00:00

abstract：:Carcinoembryonic antigen-related cell adhesion molecules (CEACAMs) belong to the immunoglobulin superfamily and contribute to cell-cell adhesion and signal modulation in various tissues. In humans, several CEACAMs are targeted by pathogenic bacteria. One peculiar member of this family, CEACAM3, is exclusively expresse...

journal_title：Archives of biochemistry and biophysics

authors： Buntru A,Roth A,Nyffenegger-Jann NJ,Hauck CR

更新日期：2012-08-01 00:00:00

abstract：:Previous studies in which dicyclohexylcarbodiimide (DCCD) was used to inactivate F1-ATPase enzymes have suggested that two glutamate residues in the beta-subunit are essential for catalysis. In the Escherichia coli F1-ATPase, these are residues beta-Glu-181 and beta-Glu-192. Oligonucleotide-directed mutagenesis was us...

journal_title：Archives of biochemistry and biophysics

authors： Parsonage D,Wilke-Mounts S,Senior AE

更新日期：1988-02-15 00:00:00