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(dG)6, oligo(dG)4, and d-GMP. One class of site binds Eu(3+) ions more strongly than the other. Since the "tight" class of bound Eu(3+) ions have two coordinated water molecules, it is inferred that six or seven atoms from the oligomers are coordinating the Eu(3+). The "weaker" class of Eu(3+) ion sites involve the coordination of six or seven water molecules and therefore, are coordinated by one or two atoms from the oligomer. The tight class of Eu(3+) binding site is attributed to an interstrand association of Eu(3+) with the oligomers forming dimeric or polymeric structures. The dissociation constants (Kd) for the 1:1 complexes Eu(d-GMP)+ and Eu(d-GTP)- have been determined as well as the Kd for the dimerization reaction of Eu(d-GMP)+. The Tb(3+) luminescence enhancement properties of these molecules are also examined in relation to their EU(3+) binding characteristics.
journal_name
J Inorg Biochemjournal_title
Journal of inorganic biochemistryauthors
Klakamp SL,Horrocks WD Jrdoi
10.1016/0162-0134(92)80028-tsubject
Has Abstractpub_date
1992-05-15 00:00:00pages
175-92issue
3eissn
0162-0134issn
1873-3344pii
0162-0134(92)80028-Tjournal_volume
46pub_type
杂志文章abstract：:Catalytic mechanisms of reduction of O(2) to 2H(2)O by respiratory terminal oxidases have been extensively investigated. Tri-heme (b(558), b(595), d) cytochrome bd oxidases presumably utilize a dihemic site composed of high-spin hemes d and b(595). We performed a CO photolysis/recombination study of the purified fully...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2012.09.016
更新日期：2013-01-01 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
pub_type： 杂志文章
doi：10.1016/0162-0134(94)85122-0
更新日期：1994-04-01 00:00:00
abstract：:Marinobactins A-E are a suite of amphiphilic siderophores which have a common peptidic head group that coordinates Fe(III), and a fatty acid which varies in length and saturation. As a result of the amphiphilic properties of these siderophores it is difficult to study siderophore-mediated uptake of iron, because the a...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2007.07.007
更新日期：2007-11-01 00:00:00
abstract：:Nickel-containing carbon monoxide dehydrogenases, acetyl-CoA synthases, nickel-iron hydrogenases, and diron hydrogenases are distinct metalloenzymes yet they share a number of important characteristics. All are O(2)-sensitive, with active-sites composed of iron and/or nickel ions coordinated primarily by sulfur ligand...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.jinorgbio.2011.08.012
更新日期：2012-01-01 00:00:00
abstract：:The magnetic properties of intact and freeze-dried blood cells of the tunicate Ascidia nigra and of model vanadium(III) and (IV) compounds as polycrystalline solids and in aqueous solution have been measured up to 50 kOe with a SQUID susceptometer. Corrections for the samples' diamagnetism were extracted from the temp...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/0162-0134(88)80048-5
更新日期：1988-07-01 00:00:00
abstract：:We present a comprehensive analysis of the most likely ground state configuration of the resting state of vanadium dependent chloroperoxidase (VCPO) based on quantum mechanics/molecular mechanics (QM/MM) evaluations of ground state properties, UV-vis spectra and NMR chemical shifts. Within the QM/MM framework, density...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2008.04.006
更新日期：2008-08-01 00:00:00
abstract：:Cobalt(III) triarylcorroles containing 0-3 nitro groups on the para-position of the three meso-phenyl rings of the macrocycle were synthesized and characterized by electrochemistry, mass spectrometry, (UV-vis) and (1)H NMR spectroscopy. The examined compounds are represented as (NO2Ph)(n)Ph(3-n)CorCo(PPh3), where n va...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2013.12.014
更新日期：2014-07-01 00:00:00
abstract：:The solution structure of Fe(II)-peplomycin was determined from NMR data collected for this molecule. As found previously for Fe(II)- and Co(II)-bound bleomycin; the coordination sphere of the metal is composed of the primary and secondary amines in β-aminoalanine, the pyrimidine and imidazole rings in the pyrimidinyl...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2012.02.020
更新日期：2012-06-01 00:00:00
abstract：:HtaA is a heme-binding protein that is part of the heme uptake system in Corynebacterium diphtheriae. HtaA contains two conserved regions (CR1 and CR2). It has been previously reported that both domains can bind heme; the CR2 domain binds hemoglobin more strongly than the CR1 domain. In this study, we report the bioph...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2016.11.027
更新日期：2017-02-01 00:00:00
abstract：:Fourteen new complexes were obtained from Ln(III)(NO3)3∙n-H2O and the chromophores 2-(1H-benzo[d]imidazol-2-yl)-phenol (Bzp1) or 2-(5-methyl-1H-benzo[d]imidazol-2-yl)-phenol (Bzp2). The complete characterization allowed us to assign unequivocally the structures of all the complexes. The techniques used for this purpos...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2019.110842
更新日期：2019-12-01 00:00:00
abstract：:The basic knowledge about biological inorganic chemistry, thermodynamics and metal binding sites of metalloproteins is crucial for the understanding of their metal binding-structure-function relationship. Metal-peptide complexes are useful and commonly used models of metal-enzyme active sites, among which copper and z...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2016.02.030
更新日期：2016-10-01 00:00:00
abstract：:Selenium in the form of selenocysteine plays an essential role in a number of proteins, but its role in non-enzymatic biochemistry is also important. In this short review we discuss the interactions between inorganic selenium, arsenic and mercury under physiological conditions, especially in the presence of glutathion...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.jinorgbio.2007.06.008
更新日期：2007-11-01 00:00:00
abstract：:To further develop the biomimetic chemistry of [FeFe]- and [NiFe]-hydrogenases for catalytic proton reduction to hydrogen (H2), two serials of dinuclear diiron and trinuclear NiFe2 dithiolate complexes with chelating PCNCP ligands, namely, Fe2(μ-edt)(CO)4{κ2-(Ph2PCH2)2NR} (1a-1c) and Fe2(CO)6(μ3-S)2Ni{(Ph2PCH2)2NR} (2...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2020.111126
更新日期：2020-09-01 00:00:00
abstract：:Reactivity of the dicopper(I) and dicopper(II) complexes supported by novel polyamine ligands L1 (1,11-bis(6-methylpyridin-2-yl)-2,6,10-triaza-2,6,10-tribenzylundecane) and L2 (5-benzyl-1,9-bis(6-methylpyridin-2-yl)-2,8-bis(6-methylpyridin-2-ylmethyl)-2,5,8-triazanonane) towards O(2) and H(2)O(2), respectively, has be...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2003.11.009
更新日期：2004-05-01 00:00:00
abstract：:The structural effects of Hg(II) ions on the erythrocyte membrane were studied through the interactions of HgCl2 with human erythrocytes and their isolated resealed membranes. Studies were carried out by scanning electron microscopy and fluorescence spectroscopy, respectively. Hg(II) induced shape changes in erythrocy...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(00)00105-7
更新日期：2000-10-01 00:00:00
abstract：:The interaction of Co(III) and Co(II) cobalamin (Cbl) and cobinamide (Cbi) with thiocyanate was examined with UV-vis and EPR spectra. S/N-linkage isomerism was explored on Co(III) and Co(II) Cbl and Cbi models using density functional theory (DFT; BP86, B3LYP). Performed calculations suggest the prevalence of isothioc...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2013.04.011
更新日期：2013-08-01 00:00:00
abstract：:The binding and reactivity of the hydrosulfide ion (HS-) to iron(II) porphyrinates has been examined for several synthetic meso-tetraphenylporphine (TPP) derivatives. In all cases, HS- coordinates to the iron centers in a 1:1 stoichiometry with formation constants (Kf) that reflect the electronic characteristics of th...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2016.08.014
更新日期：2017-02-01 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：:Polyamines are ubiquitous polycations that participate in cellular processes such as growth, differentiation and cell death. Among the different functions ascribed to these organic cations, the polyamine spermine is known to protect DNA from the damage produced by reactive oxygen species (ROS) generated by different a...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2005.07.005
更新日期：2005-10-01 00:00:00
abstract：:Gold(III) complexes bearing bidentate ligands based on the 1,10-phenanthroline and 2,2'-bipyridine scaffolds have shown promising anticancer activity against a variety of tumor cell lines. In particular, our laboratory has previously found that a pseudo five coordinate gold(III) complex possessing the 2,9-di-sec-butyl...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2014.08.014
更新日期：2014-12-01 00:00:00
abstract：:The tyrosine kinase inhibitor imatinib is successfully used in the treatment of chronic myeloid leukemia, but the occurrence of resistance phenomena can significantly limit therapeutic impact. Imatinib shows synergistic effects with cisplatin, suggesting that the coadministration of different cytostatics might reestab...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2006.06.013
更新日期：2006-11-01 00:00:00
abstract：:Three biotinylated platinum(IV) complexes (1-3) were designed and synthesized. The resulting platinum(IV) complexes exhibited effective cytotoxicity against the tested cancer cell lines, especially complex 1, which was 2.0-9.6-fold more potent than cisplatin. These complexes were found to be rapidly reduced to their a...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2017.08.017
更新日期：2017-11-01 00:00:00
abstract：:In this paper, antineoplastic activities of protein-conjugated silver sulfide nano-crystals with different shapes were described in detail. Transmission electron microscope analysis demonstrated that stable and well-disperse protein-conjugated silver sulfide nano-particles, nano-rods, and nano-wires could be prepared ...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2009.10.015
更新日期：2010-01-01 00:00:00
abstract：:The use of chelating agents for iron and aluminum in different clinical applications has found increasing attention in the last thirty years. Desferal, deferiprone and deferasirox, chelating agents nowadays in use, are based on hydroxamic groups, hydroxyl-substituted pyridinones or aromatic ring systems. With the aim ...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2013.06.009
更新日期：2013-10-01 00:00:00
abstract：:The reactive intermediates formed in the catalase-peroxidase from Synechocystis PCC6803 upon reaction with peroxyacetic acid, and in the absence of peroxidase substrates, are the oxoferryl-porphyrin radical and two subsequent protein-based radicals that we have previously assigned to a tyrosyl (Tyr()) and tryptophanyl...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2006.02.009
更新日期：2006-05-01 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：:The 134 amino acid DNase domain of colicin E9 contains a zinc-finger-like HNH motif that binds divalent transition metal ions. We have used 1D 1H and 2D 1H-15N NMR methods to characterise the binding of Co2+, Ni2+ and Zn2+ to this protein. Data for the Co2+-substituted and Ni2+-substituted proteins show that the metal...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(99)00235-4
更新日期：2000-04-01 00:00:00
abstract：:The biochemically important anion, peroxynitrite, is commonly thought to have a cis-conformation which is stable. This is thought to have a cyclic structure, which blocks the formation of the trans-conformation. Furthermore, it is often suggested that the latter structure isomerises to the far more stable nitrate ion....
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/s0162-0134(00)00057-x
更新日期：2000-03-01 00:00:00
abstract：:Herein we present the synthesis, structural and spectroscopic characterization of coordination compounds of cobalt(II), copper(II) and zinc(II) with 2-methylbenzimidazole (2mbz), 2-phenylbenzimidazole (2phbz), 2-chlorobenzimidazole (2cbz), 2-benzimidazolecarbamate (2cmbz) and 2-guanidinobenzimidazole (2gbz). Their cyt...
journal_title：Journal of inorganic biochemistry
pub_type： 杂志文章
doi：10.1016/j.jinorgbio.2009.05.018
更新日期：2009-09-01 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
pub_type： 杂志文章
doi：10.1016/0162-0134(94)00048-f
更新日期：1995-07-01 00:00:00
