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 to simulate chromate reduction. The first step of chromate reduction was found to be much faster than the uptake of Cr(VI) from the free space. Most probably, this step occurs already in the cell wall or on the cell membrane surface. Further reduction of Cr(V) to Cr(III) was estimated to be slower. The disappearance of the Cr(V) signal, following transfer of the plants into a Cr-free solution, lasted several tens of hours; the kinetics was mono- or biexponential depending on the length of Cr loading. The rate constants for Cr reduction in living plants were determined for the first time.
journal_name
J Inorg Biochemjournal_title
Journal of inorganic biochemistryauthors
Appenroth KJ,Bischoff M,Gabryś H,Stoeckel J,Swartz HM,Walczak T,Winnefeld Kdoi
10.1016/s0162-0134(00)00018-0subject
Has Abstractpub_date
2000-02-01 00:00:00pages
235-42issue
3eissn
0162-0134issn
1873-3344pii
S0162-0134(00)00018-0journal_volume
78pub_type
杂志文章abstract::We report the synthesis and toxicity of a series of rhenium(I) tricarbonyl complexes incorporating the trisaminomethylethane (TAME) ligand. Compounds with the (TAME)Re(CO)(3)(+) cation were synthesized via several routes, including by use of Re(CO)(5)X precursors as well as the aqueous cation Re(CO)(3)(H(2)O)(3)(+). S...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
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abstract::The putative platinum(IV) anticancer drugs, [Pt{((R)NCH(2))(2)}(py)(2)XY] (X,Y=Cl, R=p-HC(6)F(4) (1a), C(6)F(5) (1b); X,Y=OH, R=p-HC(6)F(4) (2); X=Cl, Y=OH, R=p-HC(6)F(4) (3), py = pyridine) have been prepared by oxidation of the Pt(II) anticancer drugs [Pt{((R)NCH(2))(2)}(py)(2)] (R=p-HC(6)F(4) (4a) or C(6)F(5) (4b))...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2012.07.016
更新日期:2012-10-01 00:00:00
abstract::Chromium(VI) compounds (e.g. chromates) are cytotoxic, mutagenic, and potentially carcinogenic. The reduction of Cr(VI) can yield reactive intermediates such as Cr(V) and reactive oxygen species. Bronchial epithelial cells are the primary site of pulmonary exposure to inhaled Cr(VI) and are the primary cells from whic...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2007.12.030
更新日期:2008-07-01 00:00:00
abstract::Copper(II) complexes of three linear unsymmetrical tridentate ligands viz. N-methyl-N'-(pyrid-2-ylmethyl)ethylenediamine (L1), N,N-dimethyl-N'-(pyrid-2-ylmethyl)ethylenediamine (L2) and N,N-dimethyl-N'-((6-methyl)pyrid-2-ylmethyl)ethylenediamine (L3) have been isolated and characterized by elemental analysis, electron...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2005.05.014
更新日期:2005-08-01 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::Uranium is an element belonging to the actinide series. It is ubiquitous in rock, soil, and water. Uranium is found in the ecosystem due to mining and milling industrial activities and processing to nuclear fuel, but also to the extensive use of phosphate fertilizers. Understanding uranium binding in vivo is critical,...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.jinorgbio.2019.110936
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abstract::Although selenium is taken with diet mainly as selenoamino acids, its hypoglycaemic action on hepatic gluconeogenesis has been studied with the use of inorganic selenium derivatives. The aim of the present investigation was to compare relative efficacies of inorganic and organic selenium compounds in reducing glucose ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2006.11.012
更新日期:2007-03-01 00:00:00
abstract::Gulf War Syndrome is a multi-system disorder afflicting many veterans of Western armies in the 1990-1991 Gulf War. A number of those afflicted may show neurological deficits including various cognitive dysfunctions and motor neuron disease, the latter expression virtually indistinguishable from classical amyotrophic l...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2009.05.019
更新日期:2009-11-01 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
abstract::Extended x-ray absorption fine structure (EXAFS) spectra have been recorded at the Cu edge and Zn edge in native yeast superoxide dismutase and at the Cu edge and Cd edge in the yeast superoxide dismutase derivative, where Zn has been substituted with Cd. Two different metal ligand distances in the range 1.9-2.0 A and...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(84)80027-6
更新日期:1984-11-01 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::The new cyclic tetrapeptide c(HGHK) was synthesised in the solid phase and its complexes with copper(II) were studied in aqueous solution at various pH values by means of potentiometric and spectroscopic methods (UV, EPR, CD). Six mononuclear coordination species were clearly identified within the pH range 3-11. Spect...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2004.09.007
更新日期:2004-12-01 00:00:00
abstract::When pulsed cytochrome c oxidase is exposed to carbon monoxide in the absence of oxygen the enzyme is converted quickly to its CO-associated mixed valence state. The half-time for this reaction at 0 degree C is about 4 min. This is about 100 times faster than a similar reaction which begins with the resting form of th...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(85)85038-8
更新日期:1985-03-01 00:00:00
abstract::The reaction of thiosemicarbazones (TSCs) with [Au(I)(THT)Cl], THT=tetrahydrothiophene, has been investigated. The resulting gold(I) complexes have been characterized by a range of spectroscopic techniques: NMR spectroscopy, mass spectrometry, microanalysis and infrared spectroscopy. The in vitro antimalarial data for...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2010.06.005
更新日期:2010-10-01 00:00:00
abstract::Gold nanorods (GNRs) are important platforms for biosensing and drug delivery. As for most nanomaterials, appropriate coatings such as polyethylene glycol (PEG) are needed to stabilize GNRs within biological fluids. We show here that the interactions of GNRs with proteins can be finely modulated through surface modifi...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2015.04.016
更新日期:2015-09-01 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::Selenium is an essential trace element for humans and other animals, and there is mounting evidence for the efficacy of certain forms of selenium as cancer-chemopreventive compounds. However, over the years, numerous elements such as As, Cu, Zn, Cd, Hg, Sn, Pb, Ni, Co, Sb, Bi, Ag, Au, and Mo have been found to inhibit...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.jinorgbio.2005.03.006
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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
pub_type: 杂志文章
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(97)10036-8
更新日期:1998-03-01 00:00:00
abstract::The pH- and time-dependent reaction of the anticancer drug carboplatin, [Pt(cbdca-kappa(2)O,O')(NH(3))(2)] (cbdca=cyclobutane-1,1-dicarboxylate), with the tripeptides H-glyglymet-OH (glycylglycyl-L-methionine) and Ac-glyglymet-OH at 313 K was investigated by high-performance liquid chromatography, NMR and mass spectro...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(03)00289-7
更新日期:2003-12-01 00:00:00
abstract::Effect of dietary selenium as sodium selenite on in vivo hematological parameters of Sprague-Dawley rats was examined over a 7-month period. Dietary selenium did not alter total hemoglobin, hematocrits, erythrocyte counts, or the osmotic fragility pattern of rat blood. Selenium-excessive (1.0 ppm) rats showed slightly...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(84)80025-2
更新日期:1984-11-01 00:00:00
abstract::Crystal structure analyses have helped to decipher the mode of binding of coenzyme B12 (AdoCbl) in the active site of AdoCbl-dependent enzymes. However, the question of how such enzymes perform their radical reactions is still incompletely answered. A pioneering study by Gruber and Kratky of AdoCbl-dependent glutamate...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2015.02.005
更新日期:2015-07-01 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
pub_type: 杂志文章
doi:10.1016/0162-0134(93)80028-8
更新日期:1993-12-01 00:00:00
abstract::The biochemical characterization of individual nitrergic (NO releasing) neurons is a non-trivial task both in vertebrate and invertebrate preparations. In spite of numerous efforts, there are limited data related to intracellular concentrations of essential metabolites involved in NO synthesis and degradation. This si...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2005.01.013
更新日期:2005-04-01 00:00:00
abstract::The entire nirK gene coding for a putative copper-nitrite reductase (Nir) from Sinorhizobium meliloti 2011 (Sm) was cloned and overexpressed heterologously in Escherichia coli for the first time. The spectroscopic and molecular properties of the enzyme indicate that SmNir is a green Nir with homotrimeric structure (42...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2012.04.016
更新日期:2012-09-01 00:00:00
abstract::[PtMe3(Me2CO)3]BF4 (1) reacts in acetone with 1,2,3,4-tetraacetyl-beta-D-glucopyranose (C2), pentaacetyl-alpha-D-glucopyranose (C3), pentaacetyl-beta-D-mannopyranose (C4) and pentaacetyl-beta-D-galactopyranose (C5) to give trimethyl(carbohydrate)platinum tetrafluoroborate complexes [PtMe3L]BF4 (2-5) (2, L=C2; 3, L=C3;...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(00)00088-x
更新日期:2000-07-15 00:00:00
abstract::Cisplatin (CDDP) can form interprotein cross-links, leading to the formation of platinated oligomers. A dimer, a trimer and higher oligomers of bovine pancreatic ribonuclease (RNase A) obtained upon reaction with CDDP in 1:10 protein to metal ratio at 37°C have been previously characterized. Here, we verify the abilit...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2017.05.005
更新日期:2017-08-01 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::Commercially available chromium supplements were tested for their DNA cleavage ability compared with synthetic chromium(III) complexes, including chromium(III) tris-picolinate [Cr(pic)3], basic chromium acetate [Cr3O(OAc)6]+, model complexes, and recently patented Cr-complexes for use in supplements or therapy. Four d...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2004.12.009
更新日期:2005-03-01 00:00:00
abstract::A previous publication [Frenkel, Cain, and Chao, Biochem. Biophys. Res. Commun. 127, 849-856 (1985)] described the observation that double-stranded DNA which was briefly exposed to methyl mercury (MeHg) and purified to remove free methyl mercury was transcribed at a higher rate by RNA polymerase II from wheat germ. Th...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(86)80012-5
更新日期:1986-06-01 00:00:00