abstract：:The efficiency of cobalt(III)-ligated peptides as acceptor nucleophiles in acyl transfer reactions catalyzed by alpha-chymotrypsin was examined. A series of metallopeptides with the general formula [H-(Gly)n-OCo(NH3)5]2+ (1 < or = n < or = 4) was tested. The aminolysis rate of acyl-chymotrypsin was measured spectropho...

journal_title：Journal of inorganic biochemistry

authors： Andreasen MF,Bagger S,Sørensen AM,Wagner K

更新日期：1995-03-01 00:00:00

abstract：:Horse spleen ferritin (HoSF) reconstituted with small iron cores ranging in size from 8 to 500 iron atoms was studied by magnetic susceptibility and pH measurements to determine when the added Fe3+ begins to aggregate and form antiferromagnetically coupled clusters and also to determine the hydrolytic state of the iro...

journal_title：Journal of inorganic biochemistry

authors： Hilty S,Webb B,Frankel RB,Watt GD

更新日期：1994-11-15 00:00:00

abstract：:Synthetic and spectroscopic studies of the Hg(II) and MeHg(II) complexes of azathioprine (AZA), a biologically active 6-mercaptopurine derivative, were undertaken. The altered coordination behavior of AZA with respect to the parent mercaptopurine, with sulfur no longer being the primary donor atom, was confirmed. As c...

journal_title：Journal of inorganic biochemistry

authors： Chifotides HT,Dunbar KR,Katsaros N,Pneumatikakis G

更新日期：1994-08-15 00:00:00

abstract：:The reactivities of copper(II) complexes with histidine-containing oligopeptides towards active oxygen species such as hydrogen peroxide (H2O2) and superoxide ion (O2-) were investigated by electron spin resonance (ESR)-spin trapping and thiobarbituric acid (TBA) methods. At physiological pH values, Cu(II) complexes w...

journal_title：Journal of inorganic biochemistry

authors： Ueda J,Ozawa T,Miyazaki M,Fujiwara Y

更新日期：1994-08-01 00:00:00

abstract：:The propensity of a large number of metal ions to induce cooperative conformational or structural transitions in double-stranded poly d(G-C) was assessed by UV and CD spectrometry. This ability was seen to be an intrinsic property of most metal ions. The observed (metal ion)/(polydeoxynucleotide) mole ratio calculated...

journal_title：Journal of inorganic biochemistry

authors： Rossetto FE,Nieboer E

更新日期：1994-05-15 00:00:00

abstract：:The synthesis, characterization, and antitumor activity of a series of platinum(IV) complexes of the type DACH-PtIV(X)2Y (where DACH = trans-dl, or trans-l-1,2-diaminocyclohexane, X = OH or Cl, and Y = oxalato, malonato, methylmalonato, tartronato, ketomalonato, 1,1-cyclopropanedicarboxylato, or 1,1-cyclobutanedicarbo...

journal_title：Journal of inorganic biochemistry

authors： Khokhar AR,al-Baker S,Siddik ZH

更新日期：1994-04-01 00:00:00

abstract：:The structural spectroscopic, and thermal properties of a complex of sulfacetamide (Hsacm) with Cu(II) have been investigated. The complex [Cu(Hsacm)2(NO3)2] crystallizes in the monoclinic system, space group P2(1)/n. The cell dimensions are a = 7.696(7) A, b = 8.017(7) A, c = 19.230(10), beta = 110.80(1) degree, V = ...

journal_title：Journal of inorganic biochemistry

authors： Blasco F,Ortiz R,Perelló L,Borrás J,Amigó J,Debaerdemaeker T

更新日期：1994-02-01 00:00:00

abstract：:Because metallothionein (MT) may undergo thiol-disulfide or other redox reactions under certain cellular conditions, the partially and completely oxidized products of the reactions of Cd7-MT-II with the electrophile 5,5'-dithiobis(2-nitrobenzoic acid), ESSE, and oxidized glutathione, GSSG, were characterized. Reaction...

journal_title：Journal of inorganic biochemistry

authors： Savas MM,Shaw CF 3rd,Petering DH

更新日期：1993-12-01 00:00:00

abstract：:Oxyhemoglobin is oxidized to methemoglobin by copper(II) in a two-stage reaction that results in conversion of Fe(II) to Fe(III) in heme of the beta subunits, but not the alpha subunits. Glutathione and other thiols, which are slowly oxidized by Cu(II), protect oxyhemoglobin from Cu(II)-induced oxidation. In the prese...

journal_title：Journal of inorganic biochemistry

authors： Smith RC,Reed VD,Webb TR

更新日期：1993-11-15 00:00:00

abstract：:A series of ethylenediamine platinum(IV) complexes of the type PtIV(en)XA2 and PtIV(en)X'2A2, where X = 1,1-cyclobutanedicarboxylato or malonato, X' = chloro, cyclobutanecarboxylato, cyclopentanecarboxylato, or cyclohexanecarboxylato, and A = acetato or trifluoroacetato were synthesized and characterized by elemental ...

journal_title：Journal of inorganic biochemistry

authors： Khokhar AR,Deng Y,Kido Y,Siddik ZH

更新日期：1993-05-01 00:00:00

abstract：:Previous studies of the interaction of the haem undecapeptide (MP-11) with lipidated human serum albumin in aqueous solution have been extended to a range of MeOH/H2O solution compositions. It is demonstrated that the kinetic mechanism for the interaction does not change from a simple second- and first-order reversibl...

journal_title：Journal of inorganic biochemistry

authors： Adams PA,Thumser AE

更新日期：1993-04-01 00:00:00

abstract：:Some DNA-binding experiments employing a selected number of novel dinuclear platinum complexes with the 4,4'-dipyrazolylmethane (dpzm) ligand are reported. A DNA-cleavage assay using Eco RI and Bam HI restriction endonucleases to probe the binding of the complexes at or near their unique restriction sequences of pUC9 ...

journal_title：Journal of inorganic biochemistry

authors： Broomhead JA,Rendina LM,Webster LK

更新日期：1993-02-15 00:00:00

abstract：:A number of 22 lanthanide-containing coordination compounds of sulfonamides 2 and 3 were prepared and characterized by elemental analysis and spectroscopic data. The new compounds proved to be highly potent inhibitors of isozymes I and II of carbonic anhydrase. ...

journal_title：Journal of inorganic biochemistry

authors： Supuran CT,Manole G,Andruh M

更新日期：1993-02-01 00:00:00

abstract：:Reduced azurin reacts with the resting, oxidized cytochrome c peroxidase of Pseudomonas aeruginosa to yield time courses observed at 420 nm, which consist of the sum of two exponential processes. Each process exhibits a hyperbolic dependence of the observed rate constant on the reduced azurin concentration. The fracti...

journal_title：Journal of inorganic biochemistry

authors： Brittain T,Greenwood C

更新日期：1992-10-01 00:00:00

abstract：:Four water soluble complexes of the type [M(bpy)(a-x)]NO3, where M is Pd(II) or Pt(II), bpy is 2,2-bipyridine, and a-x is anion of 2-pyridinecarboxylic acid or 2-pyrazinecarboxylic acid, have been found to bind calf thymus DNA, possibly through hydrogen binding. [M(bpy)(2-py)]NO3 complexes (2-py is an anion of 2-pyrid...

journal_title：Journal of inorganic biochemistry

authors： Mansuri-Torshizi H,Srivastava TS,Chavan SJ,Chitnis MP

更新日期：1992-10-01 00:00:00

abstract：:Maintenance of cellular iron homeostasis demands the coordination of iron uptake, intracellular storage, and utilization. Recent investigations suggest that a single genetic regulatory system orchestrates the expression of proteins with central importance for all three aspects of cellular iron metabolism at the level ...

journal_title：Journal of inorganic biochemistry

authors： Kühn LC,Hentze MW

更新日期：1992-08-15 00:00:00

abstract：:Laser-induced Eu(3+) luminescence spectroscopy is used to probe the interaction of Eu(3+) ion with guanine-containing nucleotides and single-stranded oligomers. By using time-resolved and non-time-resolved Eu(3+) luminescence techniques, two classes of Eu(3+) binding site are observed in oligo(dG)10, oligo(dG)8, oligo...

journal_title：Journal of inorganic biochemistry

authors： Klakamp SL,Horrocks WD Jr

更新日期：1992-05-15 00:00:00

abstract：:The binding of acetazolamide, p-fluorobenzensulfonamide, p-toluenesulfonamide, and sulfanilamide to nickel(II)-substituted carbonic anhydrase II has been studied by 1H NMR and electronic absorption spectroscopies. These inhibitors bind to the metal ion forming 1:1 complexes and their affinity constants were determined...

journal_title：Journal of inorganic biochemistry

authors： Moratal JM,Martinez-Ferrer MJ,Jiménez HR,Donaire A,Castells J,Salgado J

更新日期：1992-03-01 00:00:00

abstract：:The pH dependence of the apparent affinity constants of perchlorate for cobalt(II)bovine carbonic anhydrase II has been measured by electronic absorption spectroscopy. The obtained data have been analyzed in terms of the ionization of two acidic groups of CoBCAII, and the affinity of perchlorate for the two water-cont...

journal_title：Journal of inorganic biochemistry

authors： Moratal JM,Martínez-Ferrer MJ,Donaire A,Aznar L

更新日期：1992-01-01 00:00:00

abstract：:Effects of the administration of trivalent chromium (Cr(III)) to mice and the activation of carbon tetrachloride (CCl4) to form trichloromethyl radicals (.CCl3) in the liver were studied. The lipid peroxidation in liver microsomes induced in vitro by CCl4 in the presence of NADPH was decreased by the preadministration...

journal_title：Journal of inorganic biochemistry

authors： Tezuka M,Ishii S,Okada S

更新日期：1991-12-01 00:00:00

abstract：:The present Mössbauer spectroscopic studies of isolated bacterioferritin and whole cells of Pseudomonas aeruginosa have shown that the iron core of bacterioferritin is not altered on isolation. These studies have also shown that the bacterioferritin core is typically 85% oxidized within the cell and may contain a sign...

journal_title：Journal of inorganic biochemistry

authors： Kadir FH,Read NM,Dickson DP,Greenwood C,Thompson A,Moore GR

更新日期：1991-09-01 00:00:00

abstract：:The conformation of poly[d(T-G).d(C-A)] in aqueous solution (0.1 M NaClO4, 5 mM cacodylic acid buffer, pH 6.9) was studied by circular dichroism (CD) spectroscopy in the ultraviolet. The conformation of the polynucleotide, as reflected by its chiroptical signature, changes in a highly cooperative fashion in the presen...

journal_title：Journal of inorganic biochemistry

authors： Gruenwedel DW,Cruikshank MK

更新日期：1991-07-01 00:00:00

abstract：:The binding of lanthanide(III) ions to human serum apotransferrin has been investigated through 1H NMR spectroscopy. Several well resolved isotropically shifted signals have been observed between 100/-100 ppm for the Tm, Tb, Yb and Dy derivatives. Significant spectroscopic inequivalence of the two metal binding sites ...

journal_title：Journal of inorganic biochemistry

authors： Messori L,Piccioli M

更新日期：1991-05-15 00:00:00

abstract：:The visible and ultraviolet circular dichroic spectra resulting from the interaction of bovine alpha-lactalbumin with successive Cu(II) ions have been recorded under a variety of conditions. Analysis of the observed change-transfer and d-d band transitions can be made in terms of two kinds of binding sites: at a histi...

journal_title：Journal of inorganic biochemistry

authors： Tieghem E,Van Dael H,Van Cauwelaert F

更新日期：1991-05-01 00:00:00

abstract：:N-pyrimidino benzamide-2-carboxylic acid (NPBCA) and its Cu(II), Ni(II), Co(II), Zn(II), and Mn(II) chelates have been synthesized and characterized by using elemental analyses, molar conductance, molecular weight determination, magnetic moment, infrared, and electronic spectra. Antifungal activity of the synthesized ...

journal_title：Journal of inorganic biochemistry

authors： Nagar R,Mohan G

更新日期：1991-04-01 00:00:00

abstract：:Tree laccase, a multi-copper oxidase, has been studied as a copper donor in conjunction with the demetalated forms of three blue copper proteins. Copper transfer could be observed under reducing conditions in the absence of air. Only about 10% of the total copper in laccase could be transferred regardless of the amoun...

journal_title：Journal of inorganic biochemistry

authors： Meadows KA,Morie-Bebel MM,McMillin DR

更新日期：1991-03-01 00:00:00

abstract：:An antineoplastic agent, cis-K4 [PtCl2ATP] has been synthesized and characterized, using elemental analysis, solution conductance, thermoanalysis, infrared, NMR spectroscopy, and circular dichroism studies. The in vitro cytotoxic effect imparted by this compound on Dalton's Lymphoma cells has been assessed by Trypan b...

journal_title：Journal of inorganic biochemistry

authors： Nayak KK,Bhattacharyya R,Maity P

更新日期：1991-03-01 00:00:00

abstract：:The reaction of aqueous native DNA (calf thymus) with the solvated organotin(IV) species [(CH3)2SnCl2(C2H5OH)n], as well as with [(CH3)2Sn(OH)(H2O)n]+ and (CH3)2Sn(OH)2 (i.e., the hydrolysis products of aqueous (CH3)2SnCl2 at pH approximately 5 and pH approximately 7.4 respectively), was investigated by 119Sn Mössbaue...

journal_title：Journal of inorganic biochemistry

authors： Barbieri R,Silvestri A

更新日期：1991-01-01 00:00:00

abstract：:Partially purified selenoprotein P from rat plasma was digested with either trypsin, endoprotease Lys-C, or endoprotease Arg-C and analyzed by high pressure liquid chromatography and sodium dodecyl sulfate polyacrylamide gel electrophoresis. Several 75Se-labeled peptides were detected. The moles of selenium in selenop...

journal_title：Journal of inorganic biochemistry

authors： Motchnik PA,Tappel AL

更新日期：1990-11-01 00:00:00

abstract：:It was previously shown that complexation of 67Cu with His facilitates 67Cu uptake by hypothalamic slices and that His, in a concentration that is 1000-fold greater than Cu(His)2, inhibits 67Cu uptake (D. E. Hartter and A. Barnea, J. Biol. Chem. 263, 799-805 (1988)). We addressed the question: Does dissociation of the...

journal_title：Journal of inorganic biochemistry

authors： Barnea A,Katz BM

更新日期：1990-09-01 00:00:00

abstract：:Raman spectra were acquired on ox femur samples treated with hydrazine to remove the organic components of bone. A large increase in the signal-noise ratio of the mineral spectrum resulted from the exposure of the mineral surface and the removal of fluorescent components of the organic matrix. The effect of hydrazine ...

journal_title：Journal of inorganic biochemistry

authors： Walters MA,Leung YC,Blumenthal NC,LeGeros RZ,Konsker KA

更新日期：1990-07-01 00:00:00

abstract：:Synthetic, structural and biochemical aspects of some organoboron complexes of sulphur containing ligands having ONS and SNNS donor systems have been described. The ligands were prepared by the condensation of 1-phenyl-1,3-butanedione, 2,4-pentanedione, diphenylethanedione, 2,3-butanedione, ethanedial and 1,4-benzened...

journal_title：Journal of inorganic biochemistry

authors： Singh VP,Singh RV,Tandon JP

更新日期：1990-07-01 00:00:00

abstract：:The preparation, spectral properties, and crystal structure of a copper(II) complex of 4-acetyl-N-[(cyclohexylamino)carbonyl]benzenesulfonamide, which is known as acetohexamide, and pyridine are reported. The complex Cu(AH)2(py)2, where AH = acetohexamide and py = pyridine, was prepared and characterized by X-ray and ...

journal_title：Journal of inorganic biochemistry

authors： Pezeshk A,Pezeshk V

更新日期：1990-03-01 00:00:00

abstract：:Bovine calmodulin, spin-labeled at tyrosine-99, has been utilized in electron paramagnetic resonance (EPR) studies to investigate calmodulin interactions with Ca(II), Cd(II), and Mg(II). The addition of either Ca(II) or Cd(II) to apo-calmodulin results in a complex capable of activating target enzymes, such as 3', 5'-...

journal_title：Journal of inorganic biochemistry

authors： You GF,Buccigross JM,Nelson DJ

更新日期：1990-02-01 00:00:00

abstract：:The interaction of vanadate with 5'-mononucleotides, ADP, ATP, and various molecules containing some of their chemical moieties was studied in aqueous solution in the pH region of 5-9 using proton, 13C, 31P, and 51V nuclear magnetic resonance (NMR) spectroscopy. All the compounds studied formed noncyclic vanadate este...

journal_title：Journal of inorganic biochemistry

authors： Geraldes CF,Castro MM

更新日期：1989-11-01 00:00:00

abstract：:New complexes of the type [Cr(INH)2Cl2]Cl.2H2O, VO(INH)2Cl2 and TiO(INH)2Cl, where INH = isonicotinic acid hydrazide, have been prepared. The complexes were characterized by infrared and UV-vis spectroscopy, proton nuclear magnetic resonance (NMR) and elemental analyses, molar conductivity and x-ray powder diffraction...

journal_title：Journal of inorganic biochemistry

authors： Pin Y,Zhang XP

更新日期：1989-09-01 00:00:00

abstract：:Inhibition of hemin-mediated O2 activation by bovine superoxide dismutase and the copper tetrammine complex has been examined. It is shown that the inhibitory effect of these species is not due to metabolism of O2-., but to a nonspecific inhibition of the process by the Cu2+ ion. We propose that the inhibition occurs ...

journal_title：Journal of inorganic biochemistry

authors： Adams C,Adams PA

更新日期：1989-09-01 00:00:00

abstract：:Carboxypeptidase A-catalyzed hydrolysis of peptides and depsipeptides is competitively inhibited by N-(1-carboxy-5-t-butyloxycarbonylaminopentyl)-L-phenylalanine (Boc-CA-Phe, Ki = 1.3 microM) and the angiotensin converting enzyme inhibitor, N-(1-carboxy-5-carbobenzoxyaminopentyl)-glycyl-L-phenylalanine (Z-CA-Gly-Phe, ...

journal_title：Journal of inorganic biochemistry

authors： Martin MT,Holmquist B,Riordan JF

更新日期：1989-05-01 00:00:00

abstract：:Twenty-seven sheep given either copper (Cu) and/or tetrathiomolybdate (TM) were used to study the subcellular distribution of Cu within the kidney and to monitor the location of lysosomes within the subcellular fractions using acid phosphatase (AP) as a marker enzyme. Copper dosing alone increased the Cu content in th...

journal_title：Journal of inorganic biochemistry

authors： Gooneratne SR,Howell JM,Gawthorne JM,Kumaratilake JS

更新日期：1989-01-01 00:00:00

abstract：:It was shown that the treatment of a DNA fragment and a hepta-decanucleotide having a hairpin structure by Ru(2,2'-bipyridyl)3(3+) complex at 15 degrees C in 1 M NaCl for 10-60 min, and subsequent hydrolysis in 1 M piperidine at 95 degrees C led to the specific cleavage of the polynucleotide chain at guanosine residue...

journal_title：Journal of inorganic biochemistry

authors： Fedorova OS,Podust LM

更新日期：1988-11-01 00:00:00