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 esters through interaction of monovanadate or divanadate with the hydroxyl groups of the ribose ring. Noncyclic anhydrides were also formed with the phosphate groups of ribose 5-phosphate, the mononucleotides, ADP, ATP, phosphate, pyrophosphate, and tripolyphosphate. In particular, ADP and ATP analogs resulted from AMP (AMPV and AMPV2) and from ADP (ADPV). Cyclic esters of trigonal bipyramidal geometry resulted from the interaction of vanadate with two ribose ring cis hydroxyl groups. AMP, CMP, and UMP formed two such complexes of 1:1 and 1:2 stoichiometries, similar to what has been observed for uridine and other nucleosides. However, 2'-deoxy-AMP does not yield this type of complexes. ADP and ATP also form similar cyclic ester complexes with vanadate, which does not chelate their pyrophosphate and tripolyphosphate moieties. Nevertheless, the separate pyrophosphate (PP) and tripolyphosphate (PPP) ligands form cyclic anhydrides of octahedral geometry with vanadate. However, their binding to vanadate is weaker than that of the ribose ring of nucleotides. Competition experiments between ethylene glycol and phosphate (P), pyrophosphate (PP), or tripolyphosphate (PPP) show that the relative strength of the interaction of these ligands with vanadate is PP greater than ethylene glycol greater than PPP greater than P.
journal_name
J Inorg Biochemjournal_title
Journal of inorganic biochemistryauthors
Geraldes CF,Castro MMdoi
10.1016/0162-0134(89)80044-3subject
Has Abstractpub_date
1989-11-01 00:00:00pages
213-32issue
3eissn
0162-0134issn
1873-3344pii
0162-0134(89)80044-3journal_volume
37pub_type
杂志文章abstract：:[Au(dppz)(2)]Cl(3) was synthesized by the reaction of HAuCl(4) in excess of the dypirido[3,2-a: 2,3-c]phenazine (dppz) ligand. This complex was characterized by elemental analysis, fast atom bombardment (FAB) mass, NMR, UV-visible and IR spectroscopies. DNA-gold complex interactions were studied by spectroscopic titra...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2006.08.015
更新日期：2007-01-01 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
pub_type： 杂志文章,评审
doi：10.1016/0162-0134(92)84064-t
更新日期：1992-08-15 00:00:00
abstract：:In this work we present results of density functional theory (DFT) calculations on dicopper patellamides and their affinity for molecular oxygen and carbonate. Patellamides are cyclic octapeptides that are produced by a cyanobacterium, and may show promise as therapeutics. Thus, carbonate binding to a dicopper patella...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2008.08.009
更新日期：2008-12-01 00:00:00
abstract：:An examination was made of the effects of tetrathiomolybdate (TTM), ammonium molybdate (AM), sodium sulphide, and two molybdo amino acids (cysteine-Mo, cysteine-Mo-S) on the distribution of Cu and Zn among proteins in extracts of the livers and kidneys of rats and sheep. Tetrathiomolybdate caused a shift in the chroma...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(87)80002-8
更新日期：1987-11-01 00:00:00
abstract：:The syntheses of three platinum(II) complexes bearing sulfonamide-((E)-2-(4-methylphenylsulfonamido)-2',6'-difluoroazobenzene, HL1) and hydroxy-azo-2,6-difluorobenzene ((E)-2-((2,6-difluorophenyl)diazenyl)phenol, HL2) bidentate ligands is described. These complexes, [Pt(L1)(DMSO)Cl] (1), [Pt(L2)(DMSO)Cl] (2), and [Pt(...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2017.07.035
更新日期：2017-12-01 00:00:00
abstract：:An overview is given of the results of metal ion-diclofenac interactions. Several complexes have been synthesized at the University of Ioannina. Binuclear complexes, [Cu(L)2(H2O)]2 x 2H2O and [CuL2(S)]2 where S is H2O, EtOH, DMSO, (CH3)2CO and DMF, and mononuclear complexes, [MnL2(H2O)], [FeL2(H2O)2], [CoL2(H2O)2] x 0...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(99)00175-0
更新日期：2000-04-01 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
pub_type： 杂志文章
doi：10.1016/0162-0134(93)80015-2
更新日期：1993-05-01 00:00:00
abstract：:The stoichiometry of dioxygen uptake of Co complexes with 4',5'-bis-(5-chloro-2-hydroxyphenylmethylideneimino)benzo-12-crown-4 (1a), 4',5'-bis(2-hydroxyphenylmethylideneimino)benzo-12-crown-4 (1b), 4',5'-bis-(5-methoxy-2-hydroxyphenylmethylideneimino)benzo-12-crown-4 (1c), 4',5'-bis-(5-chloro-2-hydroxyphenylmethyliden...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2006.03.004
更新日期：2006-08-01 00:00:00
abstract：:The mechanism of action of clinically used Pt-based drugs is through the formation of stable DNA adducts occurring at the nitrogen in position 7 of guanine (N7) and involving one or two spatially closed residues. Nevertheless, proteins can represent alternative targets since in particular sulfur groups, present in cys...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2013.01.007
更新日期：2013-05-01 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
pub_type： 杂志文章
doi：10.1016/s0162-0134(97)10025-3
更新日期：1998-02-01 00:00:00
abstract：:The reaction of the copper(II) diclofenac complex [Cu(dicl)2(H2O)2] (1) (dicl = deprotonated diclofenac (Hdicl)) with the chelating N-donor ligands ethylenediamine (en), propan-1,3-diamine (pn), unsymmetrical dimethylethylene-diamine (unsym-dmen) and N,N,N',N'-tetramethylethylene-diamine (temed) in methanol-water (4:1...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2018.07.009
更新日期：2018-10-01 00:00:00
abstract：:Hexacyanochromate ion, (Cr(CN)6)3-, was applied to ribonuclease T1 (RNase T1), which specifically cleaves RNA chains at guanylic acid residues. From kinetic studies, this anion was shown to bind to the active site of RNase T1 as a competitive inhibitor. Therefore, the line broadening effect of NMR resonances due to bi...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(86)80095-2
更新日期：1986-10-01 00:00:00
abstract：:Ruthenium complexes hold a great potential in chemotherapy as an alternative to the classical platinum based drugs. The organometallic compounds studied in the present work were previously found to exhibit important anticancer activities. Here we have investigated the binding of three ruthenium compounds, namely [Ru(η...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2013.09.008
更新日期：2013-12-01 00:00:00
abstract：:Three of the most plausible biological theories of arsenic carcinogenesis are protein binding, oxidative stress and altered DNA methylation. This review presents the role of trivalent arsenicals binding to proteins in arsenic carcinogenesis. Using vacuum filtration based receptor dissociation binding techniques, the l...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.jinorgbio.2007.10.021
更新日期：2008-03-01 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
pub_type： 杂志文章
doi：10.1016/0162-0134(94)80011-1
更新日期：1994-05-15 00:00:00
abstract：:A series of new platinum(II) and platinum(IV) adducts of type [P(II)(cis-1,4-DACH)LCl]NO(3,) where cis-1,4-DACH=cis-1,4-diaminocyclohexane, and L=9-ethylguanine, 1-methylcytosine, adenine, adenosine, cytosine, cytidine, guanine, and [Pt(IV)(cis-1,4-DACH)Ltrans-(X)(2)Cl]NO(3), (where Y=hydroxo or acetato), were synthes...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(03)00262-9
更新日期：2003-09-01 00:00:00
abstract：:Citrate occurs at about 0.1 mM in blood plasma and is the most likely small molecule plasma binder of both Al3+ and Fe3+. This paper assesses published stability constants for citrate binding to each metal ion. From pH 2 to 5 Al3+ forms a neutral complex with citrate that may be absorbed into the body in the upper reg...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(86)80081-2
更新日期：1986-10-01 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
pub_type： 杂志文章
doi：10.1016/0162-0134(94)85026-7
更新日期：1994-02-01 00:00:00
abstract：:The reaction between reduced Pseudomonas cytochrome c551 and cytochrome oxidase with two inorganic metal complexes, Co(phen)3(3+) and Mn(CyDTA)(H2O)-, has been followed by stopped-flow spectrophotometry. The electron transfer to cytochrome c551 by both reactants is a simple process, characterized by the following seco...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(87)80060-0
更新日期：1987-07-01 00:00:00
abstract：:Zinc is an essential element for nutrition as well as for the proper development and function of brain cells, and its traces are present in a wide range of foods. It is a constituent of many enzyme systems and is an integral part of insulin and of the active site of intracellular enzymes. However, excessive accumulati...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2009.02.009
更新日期：2009-05-01 00:00:00
abstract：:Arginine 56 in the beta subunit (betaArg56) of the iron-containing nitrile hydratase (NHase), one of the strongly conserved residues within the NHase family, is known to form hydrogen bonds to the sulfinyl (-SO2H) and sulfenyl (-SOH) groups of the post-translationally modified cysteine residues in the catalytic center...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(00)00076-3
更新日期：2000-07-01 00:00:00
abstract：:The pH- and time-dependent reactions of the anticancer drug cisplatin, cis-[PtCl(2)(NH(3))(2)], with the peptides Ac-Gly-Met-Gly-OH, Ac-Ser-Met-OH and Ac-Met-His-OH (Gly=glycyl, Met=methionyl, Ser=seryl, His=histidyl) at 313 K have been investigated by high-performance liquid chromatography, nuclear magnetic resonance...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2004.08.016
更新日期：2004-11-01 00:00:00
abstract：:The study of modified synthetic procedure of water soluble morin-5'-sulfonic acid sodium salt (NaMSA) involving less aggressive chemicals and carried out at mild conditions was described. The NaMSA salt is a convenient source of anionic morin-5'-sulfonic ligand (MSA) in ion exchange reactions. The coordination ability...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2014.09.005
更新日期：2014-12-01 00:00:00
abstract：:The reactivity of coordinated nitroxyl (HNO) has been explored with the [Fe(II)(CN)(5)HNO](3-) complex in aqueous medium, pH 6. We discuss essential biorelevant issues as the thermal and photochemical decompositions, the reactivity toward HNO dissociation, the electrochemical behavior, and the reactions with oxidizing...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2012.10.009
更新日期：2013-01-01 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
pub_type： 杂志文章
doi：10.1016/0162-0134(91)84004-s
更新日期：1991-05-15 00:00:00
abstract：:Copper(II) and zinc(II) complexes of the peptides Ac-HisValHis-NH2 and Ac-HisValGlyAsp-NH2 related to the active site of the enzyme CuZnSOD were studied by potentiometric and spectroscopic (UV-Vis, CD and EPR) techniques. The results reveal that both ligands have effective metal binding sites, but the tripeptide is a ...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2003.09.012
更新日期：2004-01-01 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
pub_type： 杂志文章
doi：10.1016/s0162-0134(99)00214-7
更新日期：2000-01-15 00:00:00
abstract：:The antineoplastic potential of a new stable mixed phosphine gold(I) complex containing tris(tert-butyl)phosphine (tBu3P) and bis(diphenylphosphino)ethene (dppet), namely [Au(tBu3P)(dppet)Cl], has been investigated in the human colon cancer HCT-116 cell line. The (31)P NMR solution study, confirms the structural featu...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2013.03.014
更新日期：2013-07-01 00:00:00
abstract：:Multicopper oxidases (MCO) are the fastest and most efficient known catalysts of the oxygen-reduction reaction. When all four copper ions are oxidized during catalysis, the native intermediate state (NI) decays in seconds to the resting oxidized state (RO), which returns to the catalytic cycle via reduction, but at a ...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2016.02.002
更新日期：2016-06-01 00:00:00
abstract：:The interaction of phytic acid with Ca(II) has been studied by potentiometric titration and by measurement of free Ca(II) concentrations using an ion Selective electrode. With increasing Ca(II) concentration, the titration curve of phytic acid is displaced to regions of lower pH. In the binding of calcium ions to phyt...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(86)80105-2
更新日期：1986-05-01 00:00:00
