Abstract:
:Copper(II) complexes of the peptide fragment (Dpl122-130) encompassing the sequence 122-130 of human doppel protein were characterized by potentiometric, UV-Visible, CD and EPR spectroscopic methods. An analogous peptide, in which the aspartate residue was substituted by an asparagine amino acid, was synthesized in order to provide evidence on the possible role of carboxylate group in copper(II) coordination. It was found that the carboxylic group is directly involved in copper(II) coordination at acidic pH, forming the CuLH(2) species with Dpl122-130. This copper(II) complex displayed EPR parameters very similar to those of the analogous complex with the whole doppel protein. At pH higher than 7, the complexes showed magnetic parameters similar to those of the major species of protein formed in the pH range 7-8, with the metal coordination environment consisting of one imidazole and three amide nitrogen atoms. The comparison of Cu-Dpl122-130 binding constant values with those of the prion peptide fragments (PrP106-114), showed that doppel peptide had a higher metal binding affinity at acidic pH whereas the prion peptide fragment binds the metal tightly at physiological pH.
journal_name
J Inorg Biochemjournal_title
Journal of inorganic biochemistryauthors
Mendola DL,Magrì A,Hansson O,Bonomo RP,Rizzarelli Edoi
10.1016/j.jinorgbio.2009.01.017subject
Has Abstractpub_date
2009-05-01 00:00:00pages
758-65issue
5eissn
0162-0134issn
1873-3344pii
S0162-0134(09)00028-2journal_volume
103pub_type
杂志文章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
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更新日期:1991-05-01 00:00:00
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journal_title:Journal of inorganic biochemistry
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更新日期:1991-01-01 00:00:00
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journal_title:Journal of inorganic biochemistry
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2010.06.012
更新日期:2010-11-01 00:00:00
abstract::A novel ruthenium(II) compound, trans-cis-cis-[Ru(II)Cl(2)(DMSO)(2)(2-amino-5-methyl-thiazole)(2)], (I), PMRu52 hereafter, that may be obtained from the previously described (cis and trans)-[Ru(II)Cl(2)(DMSO)(4)] complexes, was designed, synthesized and characterised. The single crystal X-ray structure shows a roughly...
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abstract::Antibody drug conjugates have emerged as a very attractive type of targeted therapy in cancer. They combine the antigen-targeting specificity of monoclonal antibodies (mAbs) with the cytotoxic potency of chemotherapeutics. This review focuses on antibody drug conjugates based on metal-containing cytotoxic payloads. We...
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pub_type: 杂志文章,评审
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更新日期:2005-12-01 00:00:00
abstract::Parkinson's disease (PD) is a severe neurodegenerative disorder affecting movements. After Alzheimer's disease, it is the most common form of neurodegeneration. PD is characterized by the loss of neurons producing dopamine and by the presence of protein aggregates in the brain, known as Lewy bodies. The main constitue...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章,评审
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更新日期:2016-10-01 00:00:00
abstract::Ti-containing alpha-Keggin polyoxometalates (POMs) have been proved with properties of both anti-tumor and anti-HIV (human immunodeficiency virus). The potential anti-SARS (severe acute respiratory syndrome) activity of the POMs [alpha-PTi(2)W(10)O(40)](7-) isomers was investigated in this paper by molecular modeling ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2006.08.013
更新日期:2007-01-01 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
pub_type: 杂志文章
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(88)80025-4
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.jinorgbio.2007.06.025
更新日期:2007-11-01 00:00:00
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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
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journal_title:Journal of inorganic biochemistry
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更新日期:2012-05-01 00:00:00
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journal_title:Journal of inorganic biochemistry
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journal_title:Journal of inorganic biochemistry
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
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更新日期:2005-03-01 00:00:00
abstract::Human metallothionein-3 (hMT3), also named as human neuronal growth inhibitory factor (hGIF), can inhibit the outgrowth of embryonic cortical neurons in the presence of brain extracts. In order to systematically study the structure-property-reactivity-function relationship of hGIF, our laboratory designed a series of ...
journal_title:Journal of inorganic biochemistry
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更新日期:2008-11-01 00:00:00
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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
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abstract::A micro-electrochemical reaction cell was coupled to an electrospray mass spectrometer in order to track redox transformations for two representative medicinal gold compounds - i.e. [(2,3,4,6-tetra-O-acetyl-1-thio-β-D-glucopyranosato-S)(triethylphosphine)gold(I)] and [Au(bipydmb-H)(OH)][PF6] (where bipydmb-H is deprot...
journal_title:Journal of inorganic biochemistry
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更新日期:2019-09-01 00:00:00
abstract::The purpose of the present study was to evaluate the use of a non-innocent ligand as a surrogate of the anchored [4Fe4S] cubane in a synthetic mimic of the [FeFe] hydrogenase active site. Reaction of 2,3-bis(diphenylphosphino) maleic anhydride (bma) with [Fe(2)(CO)(6)(mu-pdt)] (propanedithiolate, pdt=S(CH(2))(3)S) in ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2010.05.011
更新日期:2010-10-01 00:00:00
abstract::The results are reported of a potentiometric and spectroscopic study of the H+, Cu2+, and Ni2+ complexes of luteinizing hormone-releasing hormone (LHRH, HL) at 25 degrees C and an ionic strength 0.10 mol dm-3 (KNO3), since there is much evidence that the in vivo release of LHRH is influenced by the concentration of co...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(88)80030-8
更新日期:1988-05-01 00:00:00
abstract::Folic acid is degraded by cytochrome c in the presence of hydrogen peroxide/tert-butyl hydroperoxide at the C9-N10 bond. The degradation is increased with increasing temperature. When guanidine HCl or benzoate are included in the reaction medium, the amount of folic acid degradation is enhanced. Catalase, formate, and...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(87)80058-2
更新日期:1987-10-01 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
pub_type: 杂志文章
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更新日期:1992-01-01 00:00:00
abstract::Crystal structures of nitric oxide synthases (NOS) isoforms have shown the presence of a strongly conserved heme active-site residue, Tyr588 (numbering for rat neuronal NOS, nNOS). Preliminary biochemical studies have highlighted its importance in the binding and oxidation to NO of natural substrates L-Arg and N(omega...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2010.06.001
更新日期:2010-10-01 00:00:00
abstract::Transferrin, the human iron transport protein, binds Ti(IV) even more tightly than it binds Fe(III). However, the fate of titanium bound to transferrin is not well understood. Here we present results which address the fate of titanium once bound to transferrin. We have determined the redox potentials for a series of T...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2010.04.004
更新日期:2010-09-01 00:00:00