Effects of chlorpromazine on actin polymerization: slackening of filament elongation and filament annealing.

abstract：:Cell extracts of Methanobacterium thermoautotrophicum possess a methenyl-tetrahydromethanopterin (methenyl-H4MPT) cyclohydrolase. The enzyme catalyzes the hydrolysis of methenyl-H4MPT to formyltetrahydromethanopterin (formyl-H4MPT). The reaction is reversible and both the rate and extent of the reaction depend on the ...

journal_title：Archives of biochemistry and biophysics

authors： Donnelly MI,Escalante-Semerena JC,Rinehart KL Jr,Wolfe RS

更新日期：1985-11-01 00:00:00

abstract：:A microsomal preparation from seedlings of Zea mays catalyzed the NAD+-dependent oxidative decarboxylation of several substrates, including 4alpha-carboxy-cholest-7-en-3beta-ol, synthesized according to a new procedure, giving the first in vitro evidence for this enzymatic activity in a higher plant. A GC assay has be...

journal_title：Archives of biochemistry and biophysics

authors： Rondet S,Taton M,Rahier A

更新日期：1999-06-15 00:00:00

abstract：:Bovine milk alpha-lactalbumin (alpha-La) was mixed with soybean saponin, and the resulting mixture was hydrolyzed by trypsin. Saponin increased the tryptic-hydrolysis level of alpha-La only at relatively high phosphate buffer concentrations (> or = 0.05 M). T(1) experiments with acetylated soybean saponin demonstrated...

journal_title：Archives of biochemistry and biophysics

authors： Shimoyamada M,Okada Y,Watanabe K,Yamauchi R

更新日期：2005-03-15 00:00:00

abstract：:It was found that the rate of polymerization of G-actin increased with the decrease of ATP concentration. When excess ATP was replaced by chloride through anion-exchange treatment, the extent of actin polymerization did not change provided that the ionic strength was raised immediately after the treatment. In the mean...

journal_title：Archives of biochemistry and biophysics

authors： Fung BM,Eyob E

更新日期：1983-02-01 00:00:00

abstract：:Optimal photosynthetic reaction centre (RC) and core antenna (LH1) levels in the purple bacterium Rhodobacter capsulatus require the puhC gene. Deletion of puhC had little effect on RC and LH1 assembly individually, but significantly inhibited the photosynthetic growth of RC+ LH1- strains, suggesting that maximal RC c...

journal_title：Archives of biochemistry and biophysics

authors： Aklujkar M,Prince RC,Beatty JT

更新日期：2006-10-01 00:00:00

abstract：:Human sorcin, M(r) 22-kDa/pI 5.3, was identified in HOB1 lymphoma cells resistant to 1.0 microM vincristine and polyclonal antibody against it was produced. Using antibody to precipitate sorcin from 32P-labeled cell extract, the SDS-PAGE-resolved human sorcin was not phosphorylated in contrast to the report of A. M. v...

journal_title：Archives of biochemistry and biophysics

authors： Lee WP

更新日期：1996-01-15 00:00:00

abstract：:ATP-activated P2Y receptors play an important role in renal sodium excretion. The aim of this study was to evaluate the modulation of ATPase-driven sodium reabsorption in the proximal tubule by ATP or adenosine (Ado). LLC-PK1 cells, a model of porcine proximal tubule cells, were used. ATP (10(-6)M) or Ado (10(-6)M) sp...

journal_title：Archives of biochemistry and biophysics

authors： Wengert M,Ribeiro MC,Abreu TP,Coutinho-Silva R,Leão-Ferreira LR,Pinheiro AA,Caruso-Neves C

更新日期：2013-07-15 00:00:00

abstract：:Tumor necrosis factor-alpha (TNF-alpha) binds to TNF-alpha receptors (TNFR) to produce a hexameric (TNF-alpha)(3)-(TNFR)(3) structure that stimulates apoptosis. We found by using ELISA that TNF-alpha binds to the glycosylphosphatidylinositol (GPI) anchor glycans of carcinoembryonic antigen, human placental alkaline ph...

journal_title：Archives of biochemistry and biophysics

authors： Fukushima K,Ishiyama C,Yamashita K

更新日期：2004-06-15 00:00:00

abstract：:Low-temperature plasma is useful for the care of wounded skin. It accelerates wound healing. However, the mechanism of this effect has not been fully elucidated yet. Galectin-1 is reported to accelerate wound healing via the Smad signaling pathway. In the present study to clarify whether or not galectins were expresse...

journal_title：Archives of biochemistry and biophysics

authors： Akimoto Y,Ikehara S,Yamaguchi T,Kim J,Kawakami H,Shimizu N,Hori M,Sakakita H,Ikehara Y

更新日期：2016-09-01 00:00:00

abstract：:The specific activity of cytochrome P450-linked coumarin 7-hydroxylase (COH) of hepatic mitoplasts from DBA/2N mice is up to 55% as great as the microsomal activity. According to Western blot and immunodiffusion analysis and inhibition studies with anti-P450Coh and metyrapone, the mitoplastic P450Coh had the same mole...

journal_title：Archives of biochemistry and biophysics

authors： Honkakoski P,Kojo A,Raunio H,Pasanen M,Juvonen R,Lang MA

更新日期：1988-12-01 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：:Signal transducer and activator of transcription 3 (STAT3) is expressed aberrantly in multiple tumors, including gastric cancer (GC). STAT3 overexpression and excessive activation have been confirmed to play vital roles in tumorigenesis. Cucurbitacin B (CuB) is a natural product with potent anti-cancer activities in s...

journal_title：Archives of biochemistry and biophysics

authors： Xu J,Chen Y,Yang R,Zhou T,Ke W,Si Y,Yang S,Zhang T,Liu X,Zhang L,Xiang K,Guo Y,Liu Y

更新日期：2020-05-15 00:00:00

abstract：:The biosynthesis of one riboflavin molecule requires one molecule of GTP and two molecules of ribulose 5-phosphate as substrates. GTP is hydrolytically opened, converted into 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione by a sequence of deamination, side chain reduction and dephosphorylation. Condensation with 3,...

journal_title：Archives of biochemistry and biophysics

authors： Fischer M,Bacher A

更新日期：2008-06-15 00:00:00

abstract：:An increased permeability of the intestinal barrier is proposed as a major event in the pathophysiology of inflammatory bowel diseases (IBD). Tumor necrosis alpha (TNFα) plays a central role in IBD pathogenesis, in part promoting tight function (TJ) barrier dysfunction. Food extracts enriched in (-)-epicatechin (EC) p...

journal_title：Archives of biochemistry and biophysics

authors： Contreras TC,Ricciardi E,Cremonini E,Oteiza PI

更新日期：2015-05-01 00:00:00

abstract：:The aim of this study was to investigate the effect of insulin resistance on glycogen concentration and glycogen synthase activity in the red and white gastrocnemius muscles and to determine whether the inverse relationship existing between glycogen concentration and enzyme activity is maintained in insulin resistant ...

journal_title：Archives of biochemistry and biophysics

authors： Coderre L,Vallega GA,Pilch PF,Chipkin SR

更新日期：2007-08-01 00:00:00

abstract：:Butyric acid produces multiple effects on mammalian cells in culture, including alterations in morphology, depression of growth rate, increased histone acetylation, and modified production of various proteins and enzymes. The latter effect is exemplified by the induction in HeLa cells of the glycoprotein hormone alpha...

journal_title：Archives of biochemistry and biophysics

authors： McClure DS,Cox GS

更新日期：1984-08-15 00:00:00

abstract：:We have successfully prepared E- and Z- isomers of 17-20 dehydro analogs of 2-methylene-19-nor-(20S)-1alpha,25-dihydroxyvitamin D3 (2MD). Both isomers bind to the recombinant rat vitamin D receptor (VDR) with high affinity. The Z-isomer (Vit-III 17-20Z) displays activity in vivo and in vitro that is similar to 2MD. Th...

journal_title：Archives of biochemistry and biophysics

authors： Vanhooke JL,Tadi BP,Benning MM,Plum LA,DeLuca HF

更新日期：2007-04-15 00:00:00

abstract：:Several substrate analogs were tested for their ability to inhibit bovine pancreatic asparagine synthetase. Of the substrate analogs tested both 6-diazo-5-oxo-L-norleucine (DON) and 5-chloro-4-oxo-L-norvaline (CONV) were shown to inhibit the enzyme strongly. DON inhibited the glutaminase and glutamine-dependent aspara...

journal_title：Archives of biochemistry and biophysics

authors： Mehlhaff PM,Schuster SM

更新日期：1991-01-01 00:00:00

abstract：:The Ku autoantigen is a heterodimeric protein of 70- and 83-kDa subunits, endowed with duplex DNA end-binding capacity and DNA helicase activity (Human DNA Helicase II, HDH II). HDH II/Ku is well established as the DNA binding component, the regulatory subunit as well as a substrate for the DNA-dependent protein kinas...

journal_title：Archives of biochemistry and biophysics

authors： Ochem AE,Rechreche H,Skopac D,Falaschi A

更新日期：2008-02-01 00:00:00

abstract：:The relationship between prolonged exercise, oxidative stress, and the protective capacity of the antioxidant defense system has been determined. Venous blood samples were removed from seven trained athletes before and up to 120 h after completion of a half-marathon for measurements of blood antioxidants, antioxidant ...

journal_title：Archives of biochemistry and biophysics

authors： Duthie GG,Robertson JD,Maughan RJ,Morrice PC

更新日期：1990-10-01 00:00:00

abstract：:Human tissue from uninvolved liver of cancer patients was fractionated using differential centrifugation and characterized for 11betaHSD enzyme activity against corticosterone, dehydrocorticosterone, 7alpha- and 7beta-hydroxy-dehydroepiandrosterone, and 7-oxo-dehydroepiandrosterone. An enzyme activity was observed in ...

journal_title：Archives of biochemistry and biophysics

authors： Robinzon B,Prough RA

更新日期：2009-06-15 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：:Several 2-halo-acyl-CoA derivatives have been synthesized to examine the interaction of these potential inhibitors of mitochondrial beta-oxidation with the purified medium chain acyl-CoA dehydrogenase from pig kidney. Racemic 2-bromo-, 2-chloro-, and 2-fluoro-octanoyl-CoA thioesters show 6.6, 33, and 3.5% of the activ...

journal_title：Archives of biochemistry and biophysics

authors： Cummings JG,Thorpe C

更新日期：1993-04-01 00:00:00

abstract：:K(+)-contracted porcine carotid arterial muscles containing phosphorylated 20-kDa myosin light chains (LC) were exposed to carrier-free [32P]orthophosphate in K(+)-stimulating solution during sustained contraction. The covalently bound LC phosphate was completely replaced by [32P]phosphate, indicating that myosin ligh...

journal_title：Archives of biochemistry and biophysics

authors： Bárány M,Rokolya A,Bárány K

更新日期：1991-05-15 00:00:00

abstract：:Leukotoxin (ltx) and isoleukotoxin (iltx) methyl esters, are metabolites of methyl linoleic acid, an essential fatty acid. They have been associated with acute respiratory distress syndrome. The observed toxicity of ltx and iltx is, in fact, due to the metabolism of the epoxides to their corresponding diols by soluble...

journal_title：Archives of biochemistry and biophysics

authors： Greene JF,Williamson KC,Newman JW,Morisseau C,Hammock BD

更新日期：2000-04-15 00:00:00

abstract：:Procedures for the purification of bovine muscle carbonic anhydrase (isoenzyme III) are described. The purified enzyme has a molecular weight near 29,000 and contains one Zn2+ ion per molecule. The sedimentation coefficient, s(0)20,w, is 2.8 X 10(-13) s, the isoelectric pH is 8.5, and A280(0.1%) = 2.07 cm-1. The CO2 h...

journal_title：Archives of biochemistry and biophysics

authors： Engberg P,Millqvist E,Pohl G,Lindskog S

更新日期：1985-09-01 00:00:00

abstract：:Troponin T (TnT) binds to tropomyosin (Tm) to anchor the troponin complex in the thin filament, and it thus serves as a vital link in the Ca(2+) regulation of striated muscle contraction. Pioneer work three decades ago determined that the T1 and T2 chymotryptic fragments of TnT each contains a Tm-binding site. A more ...

journal_title：Archives of biochemistry and biophysics

authors： Jin JP,Chong SM

更新日期：2010-08-15 00:00:00

abstract：:Pentobarbital, a general anesthetic and non-genotoxic carcinogen, can induce gene expression by activating transcription. In the Drosophila glutathione S-transferase D21 (gstD21) gene, pentobarbital's regulatory influence extends to the level of mRNA turnover. Transcribed from an intronless gene, gstD21 mRNA is intrin...

journal_title：Archives of biochemistry and biophysics

authors： Akgül B,Tu CP

更新日期：2007-03-01 00:00:00

abstract：:Cellular chloride transport has a fundamental role in cell volume regulation and renal salt handling. Cellular chloride entry or exit are mediated at the plasma membrane by cotransporter proteins of the solute carrier 12 family. For example, NKCC2 resorbs chloride with sodium and potassium ions at the apical membrane ...

journal_title：Archives of biochemistry and biophysics

authors： Loureiro CA,Barros P,Matos P,Jordan P

更新日期：2019-07-15 00:00:00

abstract：:The ability of nine phospholipids to alter the activity of low-Km cyclic AMP phosphodiesterase was examined in microsomal fractions of rat adipocytes. The enzyme was activated by phosphatidylserine (21% at 300 microM) and phosphatidylglycerol (36% at 300 microM). The activation was concentration dependent over the ran...

journal_title：Archives of biochemistry and biophysics

authors： Macaulay SL,Kiechle FL,Jarett L

更新日期：1983-08-01 00:00:00