abstract：:Glucosidase I, the enzyme catalyzing the first step of N-linked oligosaccharide processing, has been purified from calf liver crude membranes [H. Hettkamp, G. Legler, and E. Bause, (1984) Eur. J. Biochem. 142, 85-90]. Binding experiments with concanavalin A-Sepharose suggest that glucosidase I is a glycoprotein with h...

journal_title：Archives of biochemistry and biophysics

authors： Schweden J,Borgmann C,Legler G,Bause E

更新日期：1986-07-01 00:00:00

abstract：:Two different fractions were present in crystalline bovine liver catalase, and could be resolved using dye-ligand affinity chromatography with Red-A Matrex gel containing Procion HE 3B. The major part (alpha) was not adsorbed on this gel. The second fraction (beta) was firmly adsorbed to the gel, and could be eluted e...

journal_title：Archives of biochemistry and biophysics

authors： Jouve HM,Pelmont J,Gaillard J

更新日期：1986-07-01 00:00:00

abstract：:Solution characterization of heparin with high affinity (HA) and low affinity (LA) for antithrombin III was performed using the methods of small-angle x-ray scattering (SAXS), viscometry, and aqueous gel permeation chromatography (GPC). SAXS provided various topological parameters including the radius of gyration ([S2...

journal_title：Archives of biochemistry and biophysics

authors： Khorramian BA,Stivala SS

更新日期：1986-06-01 00:00:00

abstract：:Two forms of the beta-glucosidase amygdalin hydrolase (AH I and II), which catalyze the hydrolysis of (R)-amygdalin to (R)-prunasin and D-glucose, have been purified over 200-fold from mature black cherry (Prunus serotina Ehrh.) seeds. These proteins showed very similar molecular and kinetic properties but could be re...

journal_title：Archives of biochemistry and biophysics

authors： Kuroki GW,Poulton JE

更新日期：1986-06-01 00:00:00

abstract：:The solution structure of native and systematically modified ovine submaxillary mucin (OSM) has been probed by proton NMR spectroscopic methods. Most of the resonances in the spectra have been tentatively assigned to the peptide and O-linked disaccharide, alpha-N-acetylneuraminic acid 2----6 alpha-N-acetylgalactosamin...

journal_title：Archives of biochemistry and biophysics

authors： Gerken TA

更新日期：1986-06-01 00:00:00

abstract：:The role of sarcoplasmic reticulum (SR) in malignant hyperthermia (MH) was studied using the heavy microsomal fraction prepared from semitendinosus muscles of both normal and genetically MH-susceptible pigs. In the presence of ATP, SR was loaded with 70 nmol Ca2+/mg SR protein. Under these conditions, MH-SR demonstrat...

journal_title：Archives of biochemistry and biophysics

authors： Ohnishi ST,Waring AJ,Fang SR,Horiuchi K,Flick JL,Sadanaga KK,Ohnishi T

更新日期：1986-06-01 00:00:00

abstract：:Cultured arterial smooth muscle cells have been found to contain an activatable neutral cholesteryl esterase (EC 3.1.1.13). This enzyme is similar to that previously described in adipose tissue, adrenal cortex, and aortic homogenates. Although both the lysosomal (acid) and cytoplasmic (neutral) cholesteryl esterases w...

journal_title：Archives of biochemistry and biophysics

authors： Hajjar DP

更新日期：1986-05-15 00:00:00

abstract：:Subcutaneous implantation of demineralized bone matrix in rats induces migration of host cells into the site and results in the sequential development of cartilage and bone. The biosynthesis and metabolic fate of proteoglycans in the plaques at the bone matrix implantation site were investigated by [35S]sulfate labeli...

journal_title：Archives of biochemistry and biophysics

authors： Tian MY,Yanagishita M,Hascall VC,Reddi AH

更新日期：1986-05-15 00:00:00

abstract：:Phosphoenolpyruvate carboxylase from maize leaves was inactivated by pyridoxal 5'-phosphate in the dark and in the light. A two-step reversible mechanism is proposed for inactivation in the dark, which involves the formation of a noncovalent complex prior to a Schiff base with amino groups of the enzyme. Spectral anal...

journal_title：Archives of biochemistry and biophysics

authors： Podesta FE,Iglesias AA,Andreo CS

更新日期：1986-05-01 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：:The effects of ethanol at concentrations below 10% on the conformation of tropomyosin, its end-to-end polymerization, its binding to F-actin, and its effects on actomyosin ATPase activity were studied. Ethanol stabilized the tropomyosin conformation by shifting the helix thermal unfolding profile to higher temperature...

journal_title：Archives of biochemistry and biophysics

authors： Ishii Y,Lehrer SS,Ohnishi ST,Rubin E

更新日期：1986-05-01 00:00:00

abstract：:An adenosine-sensitive (Ados) mutant of baby hamster kidney (BHK) cells, ara-S10d, when treated with a toxic concentration of adenosine (Ado), displayed a substantial elevation of S-adenosylhomocysteine (SAH), S-adenosylmethionine (SAM), and methylthioadenosine (MTA). Wild-type BHK cells treated with the same concentr...

journal_title：Archives of biochemistry and biophysics

authors： Skinner MA,Ho HJ,Chan VL

更新日期：1986-05-01 00:00:00

abstract：:1-O-Alkyl-2-acetyl-sn-glycero-3-phosphocholine (AGEPC) induced phosphorylation of two proteins having molecular masses of approximately 20- and 40-kDa in washed rabbit platelets in a concentration- and time-dependent manner. Sequential stimulation with AGEPC did not induce additional protein phosphorylation, supportin...

journal_title：Archives of biochemistry and biophysics

authors： Sugatani J,Hanahan DJ

更新日期：1986-05-01 00:00:00

abstract：:A new fluorescent ATP analog, adenosine-5'-triphosphoro-gamma-1-(5-sulfonic acid)naphthyl ethylamidate (gamma-1,5-EDANS)ATP, containing the fluorophore N-(aminoethyl)-5-naphthylamine-1-sulfonic acid attached via a gamma-phosphoamidate bond was synthesized in good yield. It has absorption maxima at 255 and 344 nm and a...

journal_title：Archives of biochemistry and biophysics

authors： Wu FY,Abdulwajid AW,Solaiman D

更新日期：1986-05-01 00:00:00

abstract：:Our results indicate that the previously reported decrease in proton release by proteolyzed purple membrane sheets was due merely to the aggregation state of these preparations and not to the loss of the carboxyl-terminal tail. Changes in H+/M412 ratios obtained for purple and white membrane preparations correlate wit...

journal_title：Archives of biochemistry and biophysics

authors： Arrio B,Johannin G,Volfin P,Lefort-Tran M,Packer L,Robinson AE,Hrabeta E

更新日期：1986-04-01 00:00:00

abstract：:In vitro phosphorylation of purified spectrin dimer was studied in the presence of Ca2+-calmodulin (CaM). CaM inhibited autophosphorylation of the beta subunit of spectrin. The inhibitory effect (65% at a 32-fold molar excess) appeared to be due to a weak interaction of CaM with spectrin. CaM was similarly effective i...

journal_title：Archives of biochemistry and biophysics

authors： Maretzki D,Lutz HU

更新日期：1986-04-01 00:00:00

abstract：:alpha 1-Acid glycoprotein (alpha 1-AGP) is a glucocorticoid inducible gene product that is synthesized and secreted by certain rat hepatoma tissue culture (HTC) cell lines such as M1.54. Exposure to monensin, a Na+-K+ ionophore, causes a significant redistribution of alpha 1-AGP into two distinct fractions; immunoprec...

journal_title：Archives of biochemistry and biophysics

authors： Haffar OK,Edwards CP,Firestone GL

更新日期：1986-04-01 00:00:00

abstract：:For a set of 10 para-substituted toluene derivatives, three enzymatic constants were determined describing their interaction with purified rabbit liver microsomal P-450LM2. The three constants were the catalytic rate constant (Kcat) for hydroxylation, the apparent dissociation constant (Kd) for the enzyme-substrate co...

journal_title：Archives of biochemistry and biophysics

authors： White RE,McCarthy MB

更新日期：1986-04-01 00:00:00

abstract：:Iowa trypanosome antigen type (IaTat) 1.2 variant surface glycoprotein (VSG) is synthesized in vitro as a Mr 54,000 preprotein that contains a 31-amino-acid signal peptide. Translation of mRNA in the presence of either dog pancreas or trypanosome microsomal membranes results in cotranslational cleavage of the signal p...

journal_title：Archives of biochemistry and biophysics

authors： Presper KA,Heath EC

更新日期：1986-04-01 00:00:00

abstract：:Recent studies have shown that the light-dark mediated regulation of the leaf photosynthetic enzyme pyruvate, Pi dikinase results from interconversion between an active nonphosphorylated form of the enzyme and an inactive form phosphorylated on a threonine residue. These phosphorylation and dephosphorylation reactions...

journal_title：Archives of biochemistry and biophysics

authors： Burnell JN,Hatch MD

更新日期：1986-03-01 00:00:00

abstract：:Rabbit antibodies have been prepared against ERp61, ERp59, and ERp49, three protein components of rough endoplasmic reticulum (RER) purified from mineral oil-induced plasmacytoma 315 (MOPC-315) tissue. Analysis of subcellular fractions of MOPC-315 tissue by an immunoprecipitation procedure demonstrated that all three ...

journal_title：Archives of biochemistry and biophysics

authors： Lewis MJ,Mazzarella RA,Green M

更新日期：1986-03-01 00:00:00

abstract：:The effects of extracellular ATP on phosphoinositide metabolism and intracellular Ca2+ homeostasis were studied in Ehrlich ascites tumor cells. Cytosolic [Ca2+] was measured using either quin 2 or the recently described indicator fura 2. Addition of 0.5-25 microM extracellular ATP to intact cells results in a rapid mo...

journal_title：Archives of biochemistry and biophysics

authors： Dubyak GR

更新日期：1986-02-15 00:00:00

abstract：:Germinated seeds of barley, after anaerobic treatment, produce considerable amounts of hydrogen. The anaerobic stress induces hydrogenase activity, as measured by the ability to evolve hydrogen from reduced methyl viologen. Several pieces of evidence, including bacteriological controls and induction in axenic calluses...

journal_title：Archives of biochemistry and biophysics

authors： Torres V,Ballesteros A,Fernández VM

更新日期：1986-02-15 00:00:00

abstract：:The relationship between erythroid delta-aminolevulinate (ALA) synthase and hepatic ALA synthase in rat was analyzed immunochemically, using antibodies directed against rat liver ALA synthase and against chicken liver ALA synthase. Rat erythroid ALA synthase showed no cross-reactivity with anti-liver ALA synthase anti...

journal_title：Archives of biochemistry and biophysics

authors： Yamamoto M,Fujita H,Watanabe N,Hayashi N,Kikuchi G

更新日期：1986-02-15 00:00:00

abstract：:Metallothionein isoform II was purified from calf liver. The protein had a metal content of 1.2-1.9 Cu ions and 5.6-6.2 Zn ions per molecule in different preparations. The complete amino acid sequence of the molecule was determined by automatic Edman degradation of CNBr and tryptic peptides of the carboxymethylated pr...

journal_title：Archives of biochemistry and biophysics

authors： Winge DR,Gray WR,Zelazowski A,Garvey JS

更新日期：1986-02-15 00:00:00

abstract：:Structural aspects of the binding of the linear ligands N alpha-acetyl-L-lysine (AcLys) and epsilon-aminocaproic acid (epsilon ACA) and of the cyclic analogs trans-(aminomethyl)-cyclohexanecarboxylic acid (AMCHA) and p-benzylaminesulfonic acid (BASA) to the intact plasminogen kringle 4 domain have been investigated by...

journal_title：Archives of biochemistry and biophysics

authors： De Marco A,Laursen RA,Llinas M

更新日期：1986-02-01 00:00:00

abstract：:Using specific testosterone 16 alpha-hydroxylase activity as the basis for selection of fractions during purification, the cytochrome P-450 ("I"-P-450(16)alpha) has been isolated from livers of phenobarbital-treated 129/J female mice [K. Devore, N. Harada, and M. Negishi (1985) Biochemistry, 24, 5632-5637]. An antibod...

journal_title：Archives of biochemistry and biophysics

authors： Noshiro M,Serabjit-Singh CJ,Bend JR,Negishi M

更新日期：1986-02-01 00:00:00

abstract：:Vanadate-dependent oxidation of NADH by xanthine oxidase does not require the presence of xanthine and therefore is not due to cooxidation. Addition of NADH or xanthine had no effect on the oxidation of the other substrate. Oxidation of NADH was high at acid pH and oxidation of xanthine was high at alkaline pH. The sp...

journal_title：Archives of biochemistry and biophysics

authors： Khandke L,Gullapalli S,Patole MS,Ramasarma T

更新日期：1986-02-01 00:00:00

abstract：:Ovalbumin extracted from oviduct slices incubated with [35S]methionine or [2-3]mannose contained two biosynthetic intermediates, OE and OF (Y. Kato, H. Iwase, and K. Hotta, 1984, J. Biochem. (Tokyo) 95, 455-463). In the present study, these intermediates are further characterized. The 3H dpm/35S dpm ratio of OF labele...

journal_title：Archives of biochemistry and biophysics

authors： Kato Y,Iwase H,Hotta K

更新日期：1986-02-01 00:00:00

abstract：:The influence of transmembrane ion fluxes on mycoplasma membrane potentials was studied. Electric membrane potential was calibrated vs fluorescence intensity of a potential-sensitive carbocyanine dye according to delta psi = (RT/F) X log([aIN(1 - IN) - b]/Kint), where IN = I/I0, I0 = maximal fluorescence intensity (ob...

journal_title：Archives of biochemistry and biophysics

authors： Schummer U,Schiefer HG

更新日期：1986-02-01 00:00:00

abstract：:Methyl acetyl phosphate, which was originally synthesized as a site-specific reagent for hydroxybutyrate dehydrogenase [R. Kluger and W.-C. Tsui (1980) J. Org. Chem. 45, 2723], also has an affinity for the binding site for 2,3-diphosphoglycerate in hemoglobin. Three residues in or near this cleft between the beta-chai...

journal_title：Archives of biochemistry and biophysics

authors： Ueno H,Pospischil MA,Manning JM,Kluger R

更新日期：1986-02-01 00:00:00

abstract：:3-Hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase exists in interconvertible active and inactive forms in cultured fibroblasts from normal and familial hypercholesterolemic subjects. The inactive form can be activated by endogenous or added phosphoprotein phosphatase. Active or partially active HMG-CoA reducta...

journal_title：Archives of biochemistry and biophysics

authors： Beg ZH,Reznikov DC,Avigan J

更新日期：1986-01-01 00:00:00

abstract：:The effects of nitrous oxide inactivation of the vitamin B12-dependent enzyme, methionine synthetase, on the distribution of folic acid derivatives in rat bone marrow cells, kidney, brain, and liver were determined. Methionine synthetase activity was decreased by about 90% in bone marrow cells, kidney, and brain and b...

journal_title：Archives of biochemistry and biophysics

authors： Wilson SD,Horne DW

更新日期：1986-01-01 00:00:00

abstract：:Purified 125I-labeled lectins from Datura stramonium, Evonymus europaea, and Griffonia simplicifolia (I-B4 isolectin) were used to analyze changes in the expression of carbohydrates on the surface of resident (PC) and thioglycollate-stimulated murine (C57B/6J) peritoneal exudate cells (PEC). The lectins from D. stramo...

journal_title：Archives of biochemistry and biophysics

authors： Petryniak J,Huard TK,Nordblom GD,Goldstein IJ

更新日期：1986-01-01 00:00:00

abstract：:The maximal amounts of Ca2+ being accumulated (delta Ca2+max) and H+ emitted (delta H+max) by Ca2+-loading mitochondria, with succinate (+rotenone) as respiratory substrate, were evaluated. delta Ca2+max was increased by providing either citrate or ATP to a Pi- and Mg2+-free medium. With citrate, delta H+max was only ...

journal_title：Archives of biochemistry and biophysics

authors： Guidoux R

更新日期：1985-12-01 00:00:00

abstract：:Dimethylglycine dehydrogenase (EC 1.5.99.2) and sarcosine dehydrogenase (EC 1.5.99.1) are flavoproteins which catalyze the oxidative demethylation of dimethylglycine to sarcosine and sarcosine to glycine, respectively. During these reactions tightly bound tetrahydropteroylpentaglutamate (H4PteGlu5) is converted to 5,1...

journal_title：Archives of biochemistry and biophysics

authors： Porter DH,Cook RJ,Wagner C

更新日期：1985-12-01 00:00:00

abstract：:A radiochemical assay was developed for measuring branched-chain alpha-ketoacid dehydrogenase activity of Triton X-100 extracts of freeze-clamped rat liver. The proportion of active (dephosphorylated) enzyme was determined by measuring enzyme activities before and after activation of the complex with a broad-specifici...

journal_title：Archives of biochemistry and biophysics

authors： Harris RA,Powell SM,Paxton R,Gillim SE,Nagae H

更新日期：1985-12-01 00:00:00

abstract：:Candida wickerhamii NRRL Y-2563 produced a cell-bound beta-glucosidase when grown in complex media containing 50 g of cellobiose per liter. The majority of the enzyme was located on the cell surface and was released into the supernatant upon treatment of intact cells with Zymolyase 60,000. Only about 10% of the total ...

journal_title：Archives of biochemistry and biophysics

authors： Freer SN

更新日期：1985-12-01 00:00:00

abstract：:Phosphate-dependent glutaminase is associated with the inner membrane of rat renal mitochondria. The orientation of this enzyme was characterized by comparing its sensitivity in isolated mitochondria and in mitoplasts to two membrane impermeable inhibitors. Mitoplasts were prepared by repeated swelling of mitochondria...

journal_title：Archives of biochemistry and biophysics

authors： Shapiro RA,Haser WG,Curthoys NP

更新日期：1985-11-15 00:00:00

abstract：:The interconversion of mannose-6-P and mannose-1-P in brain has been shown to be catalyzed by a distinct enzyme. The enzyme has been separated from most of the phosphoglucomutase activity of the brain. The residual phosphoglucomutase activity (less than 1%) may be associated with phosphomannomutase itself. Mannose-1,6...

journal_title：Archives of biochemistry and biophysics

authors： Guha SK,Rose ZB

更新日期：1985-11-15 00:00:00