abstract：:The plasmid DNA scission by the restriction enzyme HaeIII was investigated in the presence of tetrakis(1-methylpyridinium-4-yl)porphyrin (H2TMPyP) and its manganese(III), iron(III), nickel(II), cobalt(III) and zinc(II) derivatives. The effect of metalloporphyrins on plasmid DNA cleavage was ascertained by gel electrop...

journal_title：Journal of inorganic biochemistry

authors： Tabata M,Nakajima K,Nyarko E

更新日期：2000-03-01 00:00:00

abstract：:The uptake of chromate by the duckweed Spirodela polyrhiza was investigated with atomic absorption spectroscopy and the reduction of Cr(VI) to Cr(V) was measured using low frequency EPR spectroscopy. The biphasic kinetics of the uptake was fitted to parameters of a proposed kinetic model. Another model was developed t...

journal_title：Journal of inorganic biochemistry

authors： Appenroth KJ,Bischoff M,Gabryś H,Stoeckel J,Swartz HM,Walczak T,Winnefeld K

更新日期：2000-02-01 00:00:00

abstract：:Vitamin K3-thiosemicarbazone (C12H11N3NaO4S2 x 5H2O, abbreviated as VT), a new Schiff base derivative, has been synthesized. Its crystal structure, determined by X-ray diffraction, is triclinic, space group P1. We have also prepared five novel complexes of VT with transition metals: [M(VT)(2)2H2O] x nH2O, (n = 1 and 2...

journal_title：Journal of inorganic biochemistry

authors： Li QX,Tang HA,Li YZ,Wang M,Wang LF,Xia CG

更新日期：2000-01-30 00:00:00

abstract：:Positional isomers of mono-unsaturated 18:1-ACP have been used as substrates for stearoyl-acyl carrier protein delta9 desaturase to test whether a C-H bond abstraction from either the C-9 or C-10 position could lead to rearranged products diagnostic for the production of an allylic radical intermediate. The reconstitu...

journal_title：Journal of inorganic biochemistry

authors： Broadwater JA,Laundre BJ,Fox BG

更新日期：2000-01-15 00:00:00

abstract：:The CuA center is a dinuclear Cu2S2(Cys) electron transfer center found in cytochrome c oxidase and nitrous oxide reductase. In a previous investigation of the equatorial histidine ligands' effect on the reduction potential, electron transfer and spectroscopic properties of the CuA center, His120 in the engineered CuA...

journal_title：Journal of inorganic biochemistry

authors： Berry SM,Wang X,Lu Y

更新日期：2000-01-15 00:00:00

abstract：:Bis(picolinato)oxovanadium(IV) [VO(pic)2] is one of the most potent insulin-mimetic vanadium complexes. To probe coordination structural changes of this complex in vivo and provide insights into the origin of its high potency, an electron spin-echo envelope modulation (ESEEM) study was performed on organs (kidney, liv...

journal_title：Journal of inorganic biochemistry

authors： Fukui K,Fujisawa Y,OhyaNishiguchi H,Kamada H,Sakurai H

更新日期：1999-11-01 00:00:00

abstract：:In order to widen our knowledge on antitumour trans-[PtCl2(iminoether)2] complexes, we have synthesised two new derivatives, trans-[PtCl2¿E-HN = C(OEt)Me¿2] (1) and trans-[PtCl2¿Z-HN = C(OEt)Me¿2] (2), which differ in the configuration of the iminoether ligands. Isomer 1 showed an in vitro cytotoxicity similar to that...

journal_title：Journal of inorganic biochemistry

authors： Coluccia M,Nassi A,Boccarelli A,Giordano D,Cardellicchio N,Locker D,Leng M,Sivo M,Intini FP,Natile G

更新日期：1999-10-01 00:00:00

abstract：:The technique of comparative genomic hybridisation (CGH) has until recently been used to screen for common genomic abnormalities in fresh tumour material; it has identified previously unrecognised regions of amplification associated with poor prognosis subtypes of breast cancer and lymphoma. Our group has applied this...

journal_title：Journal of inorganic biochemistry

authors： Hiorns LR,Seckl MJ,Paradinas F,Sharp SY,Skelton LA,Brunstrom G,Newlands ES,Kelland LR,Leyland-Jones B

更新日期：1999-10-01 00:00:00

abstract：:Vanadium has well-documented blood-glucose-lowering properties both in vitro and in vivo. The design of new oxovanadium(IV) coordination compounds, intended for use as insulin-enhancing agents in the treatment of diabetes mellitus, can potentially benefit from a synergistic approach, in which the whole complex has mor...

journal_title：Journal of inorganic biochemistry

authors： Woo LC,Yuen VG,Thompson KH,McNeill JH,Orvig C

更新日期：1999-09-30 00:00:00

abstract：:Aluminium chemistry has features in common with two other groups of elements: (1) divalent magnesium and calcium, and (2) trivalent chromium and iron. The essential differences between the first group and aluminium are explored and it is shown that the much higher acidity of aluminium makes it such a powerful competit...

journal_title：Journal of inorganic biochemistry

authors： Williams RJ

更新日期：1999-08-30 00:00:00

abstract：:Bis[platinum(II)] [Cl2Pt(LL)PtCl2] complexes 2,5 and 8 with chiral non-racemic ligands: 1a-c (LL = (R,R), (S,S) and (R,S) N,N'-bis(3,4-diaminobutyl)hexanediamide); 4a,b (LL = (R,R) and (S,S) N,N'-bis[3,4-bis(diaminobutyl)] urea); 7a-d (LL' = (R,R), (S,S), (R,S) and (S,R) 4,5-diamino-N-(3,4-diaminobutyl) pentanamide) a...

journal_title：Journal of inorganic biochemistry

authors： Büning H,Altman J,Zorbas H,Beck W

更新日期：1999-07-15 00:00:00

abstract：:In the quest for more effective pain palliation radiopharmaceuticals for metastatic bone cancer, this paper relates results obtained with 166Ho complexed to the bone-seeking bisphosphonate, 1-hydroxy-4-aminopropililydenediphosphonate (APD). APD is itself a bone cancer pain palliation agent and this work was therefore ...

journal_title：Journal of inorganic biochemistry

authors： Zeevaart JR,Jarvis NV,Louw WK,Jackson GE,Cukrowski I,Mouton CJ

更新日期：1999-04-01 00:00:00

abstract：:Twenty ferritin samples were prepared at pH 6.5 with average loadings of 0-89 Fe atoms per molecule. Nuclear magnetic relaxation times T1 and T2 were measured at 3 degrees C, 23 degrees C, and at 37 degrees C and at field strength from 0.025 to 1.5 T. The field dependence, temperature dependence, and approximate equal...

journal_title：Journal of inorganic biochemistry

authors： Vymazal J,Brooks RA,Bulte JW,Gordon D,Aisen P

更新日期：1998-09-01 00:00:00

abstract：:The effect of the lanthanide(III) complexes [Gd(1,4,7,10-tetraazacyclododecane-N,N',N", N"'-tetrakis(methylenephosphonate))]5- (Gd-DOTP) and La-DOTP on the oxygen binding and spectroscopic properties of human adult and fetal hemoglobin (HbA and HbF, respectively) has been investigated. The affinity of Gd-DOTP and La-D...

journal_title：Journal of inorganic biochemistry

authors： Aime S,Fasano M,Paoletti S,Bellelli A,Coletta M,Ascenzi P

更新日期：1998-08-01 00:00:00

abstract：:Electron spin resonance spin trapping was utilized to investigate free radical generation from cobalt (Co) mediated reactions using 5,5-dimethyl-1-pyrroline (DMPO) as a spin trap. A mixture of Co with water in the presence of DMPO generated 5,5-dimethylpyrroline-(2)-oxy(1) DMPOX, indicating the production of strong ox...

journal_title：Journal of inorganic biochemistry

authors： Leonard S,Gannett PM,Rojanasakul Y,Schwegler-Berry D,Castranova V,Vallyathan V,Shi X

更新日期：1998-07-01 00:00:00

abstract：:The proton equilibrium in aqueous surfactant solutions of hemin, (PPIX)Fe(H2O)+2, involving the propionic acid groups is reported (PPIX = protoporphyrinato IX). The surfactant used are sodium dodecyl sulphate (SDS), triton X-100 (TX-100) and hexadecyl trimethylammonium bromide (CTAB). The pKa values, determined spectr...

journal_title：Journal of inorganic biochemistry

authors： Das DK,Medhi OK

更新日期：1998-05-01 00:00:00

abstract：:The interactions of two trialkyllead (TAL) compounds, (trimethyl)Pb-Cl and (tributyl)Pb-Cl, with mitochodria from rat liver have been studied. A stimulation of the respiratory rate induced by the trialkyllead compounds added at low doses was observed which was not dependent on the presence of chloride in the medium. I...

journal_title：Journal of inorganic biochemistry

authors： Bragadin M,Marton D,Murgia M,Rizzoli V,Scutari G,Deana R

更新日期：1998-03-01 00:00:00

abstract：:Complex formation between Cu(II) and human and bovine beta-casomorphin heptapeptides, Tyr-Pro-Phe-Val-Glu-Pro-Ile and Tyr-Pro-Phe-Pro-Gly-Pro-Ile, respectively, was investigated by pH potentiometry and spectroscopic (CD, EPR and electronic absorption) techniques. The results showed the critical impact of Pro residues ...

journal_title：Journal of inorganic biochemistry

authors： Chruścińska E,Olczak J,Zabrocki J,Dyba M,Micera G,Sanna D,Kozłowski H

更新日期：1998-02-01 00:00:00

abstract：:The Ce(IV)-mitoxantrone complex exhibits a higher lethality to Ehrlich ascites tumor cells than that of the free drug and shows stronger inhibition ability on the DNA synthesis of the tumor cells. Thus the Ce(IV)-mitoxantrone complex may become a more potent antitumor drug than mitoxantrone. The different interaction ...

journal_title：Journal of inorganic biochemistry

authors： Wang H,Yang P,Tian Y,Zhang Z,Zhao C

更新日期：1997-11-01 00:00:00

abstract：:X-ray diffraction, infrared spectroscopy and chemical investigations have been carried out on the inorganic phases from rat cortical and trabecular bone. Although both inorganic phases consist of poorly crystalline B carbonated apatite, several significant differences have been observed. In particular, trabecular bone...

journal_title：Journal of inorganic biochemistry

authors： Bigi A,Cojazzi G,Panzavolta S,Ripamonti A,Roveri N,Romanello M,Noris Suarez K,Moro L

更新日期：1997-10-01 00:00:00

abstract：:Copper is an essential metal ion to many living organisms, including mammals, as it mediates a wide variety of important biochemical processes. At elevated concentrations, copper is extremely toxic to host cells. This paradoxical nature of copper has necessitated a highly regulated procedure for its cellular accumulat...

journal_title：Journal of inorganic biochemistry

authors： Presta A,Stillman MJ

更新日期：1997-06-01 00:00:00

abstract：:The present investigation is designed to probe the influence of excess retinoic acid (50,000 I.U.) and Sn-protoporphyrin (50 mumol/kg bw) along with retinoic acid on the activity patterns of the rate-limiting enzyme, heme oxygenase, of the heme catabolic pathway in the liver, spleen, kidney, brain, heart, and lung of ...

journal_title：Journal of inorganic biochemistry

authors： Chandra R,Aneja R,Sharma A

更新日期：1997-05-15 00:00:00

abstract：:In an effort to understand the biochemical mechanisms of aluminum-induced neurotoxicity, we investigated the effects of aluminum ion, Al3+, on the Mg(2+)- and nucleotide-dependent protein, ras p21. Picomolar Al3+ concentrations inhibited the GTPase activity of ras p21 in an Mg(2+)-dependent manner, consistent with an ...

journal_title：Journal of inorganic biochemistry

authors： Landino LM,Macdonald TL

更新日期：1997-05-01 00:00:00

abstract：:Kinetic evidence for the role of divalent metal ions in the phosphotransferase activity of polidocanol-solubilized alkaline phosphatase from osseous plate is reported. Ethylenediamine tetreacetate, 1,10-phenanthrolin, and Chelex-100 were used to prepare metal-depleted alkaline phosphatase. Except for Chelex-100, eithe...

journal_title：Journal of inorganic biochemistry

authors： Ciancaglini P,Pizauro JM,Leone FA

更新日期：1997-04-01 00:00:00

abstract：:The coordination modes of Cu(II) to alpha-casein (90-95) and alpha-casein (90-96) peptides with opioid activity isolated from pepsin hydrolisates of alpha-casein were investigated by means of electron paramagnetic resonance, absorption, and circular dichroism spectroscopy and potentiometry. The results allow the ident...

journal_title：Journal of inorganic biochemistry

authors： Chruścińska E,Dyba M,Micera G,Ambroziak W,Olczak J,Zabrocki J,Kozłowski H

更新日期：1997-04-01 00:00:00

abstract：:A series of new copper (II) complexes with 2-methyl-3-amino(3H)-quinazolin-4-one (MAQ) and various anions (Cl-, Br-, ClO(-)4, NO(-)3, SCN-, and SO(2-)4 was prepared. Their structures and properties were characterized by elemental analysis, IR, UV-Vis and ESR spectroscopy, molar conductivity, and magnetic moment measur...

journal_title：Journal of inorganic biochemistry

authors： Ramadan AM

更新日期：1997-02-15 00:00:00

abstract：:The entire polypeptide of hyperthermophilic Pyrococcus furiosus rubredoxin was synthesized in order to specifically probe structural determinants of protein thermostability. The uv-visible, circular dichroic, electron paramagnetic, and nuclear magnetic resonance spectra, and electrochemical properties, of the native a...

journal_title：Journal of inorganic biochemistry

authors： Christen R,Jancic T,Zhou ZH,Adams MW,Tomich JM,Smith ET

更新日期：1997-01-01 00:00:00

abstract：:Studies of complexation equilibria of the antibiotic anions nalidixate and cinoxacinate with [Cu(phen)]2+ and [Cu(bipy)]2+ are reported. These studies indicate that the stability of this type of complex is strongly related to the metal environment. A correlation between the stability constants, determined here, with t...

journal_title：Journal of inorganic biochemistry

authors： Mendoza-Díaz G,Perez-Alonso R,Moreno-Esparza R

更新日期：1996-11-15 00:00:00

abstract：:Platinum complexes PtII(DAPO)X2 with diaminonitroxyl radical-trans-3,4-diamino-2,2,6,6-tetramethylpiperidine-1-oxyl (DAPO)-were synthesized by the direct reaction of DAPO with K2PtX4 (X = Cl, I) or by the replacement of chloro ligands in PtII(DAPO)Cl2 by bromo, nitrato, oxalato, malonato, and 1,1-cyclobutanedicarboxyl...

journal_title：Journal of inorganic biochemistry

authors： Sen' VD,Golubev VA,Volkova LM,Konovalova NP

更新日期：1996-10-01 00:00:00

abstract：:The inhibitory effect of Cu2+, Mn2+, Co2+, and I- on naproxen-induced photohemolysis was investigated. In order to better understand this effect, these ions were also tested for lipid peroxidation and protein crosslinking, which are among the main processes involved in erythrocyte membrane damage. The overall results ...

journal_title：Journal of inorganic biochemistry

authors： Giuffrida S,De Guidi G,Miano P,Sortino S,Condorelli G,Costanzo LL

更新日期：1996-09-01 00:00:00

abstract：:The solvent effect on the acid-base and complexation behavior of the homopolynucleotide polyuridylic acid (poly(U)) has been studied by means of potentiometric and spectrometric titrations (circular dichroism and UV-VIS) in water and in 30 and 50% (v/v) dioxane-water media. The potentiometric studies revealed the abse...

journal_title：Journal of inorganic biochemistry

authors： de Juan A,Fonrodona G,Gargallo R,Izquierdo-Ridorsa A,Tauler R,Casassas E

更新日期：1996-08-15 00:00:00

abstract：:The discovery of new metal-selective complexing agents may be facilitated by applying an in vitro selection strategy. Such a strategy was recently devised to identify and enrich populations of bacteriophage that rely on Mg(II)-, Zn(II)-, or Au(III)-selective stabilization for survival in the presence of denaturing ure...

journal_title：Journal of inorganic biochemistry

authors： Whang T,Daly B,Yin J

更新日期：1996-07-01 00:00:00

abstract：:The effect of the Cu(II)-mitoxantrone complex on the DNA synthesis of HL-60 human leukemia cells has been studied by the technique of isotopic liquid scintillation. The results indicated that the complex shows a stronger ability to inhibit DNA synthesis of the tumor cells, and thus it may become a better antitumor dru...

journal_title：Journal of inorganic biochemistry

authors： Yang P,Wang H,Gao F,Yang B

更新日期：1996-05-01 00:00:00

abstract：:The complexation between tin(II) ion and glycine was studied in 0.15 mol/dm3 NaCl medium at 310 K using potentiometric glass electrode titrations. In the pH range 1.1-4.5 and concentration range of the tin(II) between 0.2 and 5.0 mmol/dm3, with variable glycine-to-tin molar ratio up to 10:1, the experimental data were...

journal_title：Journal of inorganic biochemistry

authors： Djurdjevic P,Djokic D

更新日期：1996-04-01 00:00:00

abstract：:Anhydrotetracycline (AHTC) is the major toxic decomposition product of the antibiotic tetracycline. The complexation of AHTC to Mg(II), Al(III), and Fe(III) was studied in aqueous medium using absorption and circular dichroism measurements. The study of the Mg(II)-AHTC interactions at pH 7 indicated the formation of t...

journal_title：Journal of inorganic biochemistry

authors： Machado FC,Demicheli C,Garnier-Suillerot A,Beraldo H

更新日期：1995-11-15 00:00:00

abstract：:The ligand behavior of di-2-pyridylketone 2-aminobenzoylhydrazone (Hdpa), and phenyl(2-pyridyl)ketone 2-aminobenzoylhydrazone (Hdba) towards organotin derivatives was investigated. The synthesis and the IR and 119Sn NMR spectroscopic characterization of the compounds is reported, together with the X-ray crystal struct...

journal_title：Journal of inorganic biochemistry

authors： Ianelli S,Mazza P,Orcesi M,Pelizzi C,Pelizzi G,Zani F

更新日期：1995-11-01 00:00:00

abstract：:N-acetylaspartate (NAA) is the one of the most prominent resonances observed in the solvent-suppressed NMR spectrum of the human brain. Although it is present in the brain at about 10 mM, its precise metabolic function is still unclear, We have examined the NAA as a potential chelator for divalent metal ions such as C...

journal_title：Journal of inorganic biochemistry

authors： Rubin Y,Connelly GP,Lenkinski RE

更新日期：1995-10-01 00:00:00

abstract：:Phosphate buffer suspensions of unilamellar liposomes of phosphatidylcholine were irradiated with UVC (254 nm) and UVB (300 nm) light. The irradiation provoked lipid peroxidation and liposome lysis with release of entrapped glucose-6-phosphate. At the same intensity of absorbed light, the photochemical effect at 254 n...

journal_title：Journal of inorganic biochemistry

authors： Costanzo LL,De Guidi G,Giuffrida S,Sortino S,Condorelli G

更新日期：1995-07-01 00:00:00

abstract：:Iron deficiency anemia is a relatively common illness that can arise from a number of different causes. Three ferrous salts are usually used in its treatment: ferrous fumarate, gluconate, and sulfate. They are administered orally and are relatively well tolerated. These hematinics have been studied by Mössbauer spectr...

journal_title：Journal of inorganic biochemistry

authors： Coe EM,Bowen LH,Bereman RD

更新日期：1995-06-01 00:00:00

abstract：:The interaction of Rh2(OAc)4 with human serum albumin (HSA) has been studied by absorption difference spectroscopy, CD spectroscopy, and quantitative precipitating HSA-antibody test. Our results demonstrate that this rhodium complex reacts easily with HSA at several ratios of reagents. The Rh atoms are coordinated to ...

journal_title：Journal of inorganic biochemistry

authors： Trynda L,Pruchnik F

更新日期：1995-04-01 00:00:00