Abstract:
:Bovine calmodulin, spin-labeled at tyrosine-99, has been utilized in electron paramagnetic resonance (EPR) studies to investigate calmodulin interactions with Ca(II), Cd(II), and Mg(II). The addition of either Ca(II) or Cd(II) to apo-calmodulin results in a complex capable of activating target enzymes, such as 3', 5'-cyclic nucleotide phosphodiesterase (J. M. Buccigross, C. L. O'Donnell, and D. J. Nelson, Biochem. J. 235 677 [1986]), while Mg(II) is known to be incapable of activating calmodulin toward any of its target enzymes. Additions of Ca(II) and Cd(II) to spin-labeled apo-calmodulin gave rise to very similar changes in the EPR spectrum of the bound label, consistent with a dramatic decrease in the mobility of the nitroxide spin-label covalently attached to tyrosine-99. Addition of Mg(II) to spin-labeled apo-calmodulin caused no change in the EPR spectrum of the bound label. Thus, the conformational changes induced by Ca(II) and Cd(II) ion binding to calmodulin, which lead to decreased tyrosine-99 spin label mobility, are clearly not occurring when Mg(II) ion binds. These results are consistent with the results of other spectroscopic studies, which indicate that "activating" metal ions, such as Ca(II) and Cd(II), produce calmodulin conformers that are different from those produced by "inactivating" metal ions, such as Mg(II).
journal_name
J Inorg Biochemjournal_title
Journal of inorganic biochemistryauthors
You GF,Buccigross JM,Nelson DJdoi
10.1016/0162-0134(90)84020-psubject
Has Abstractpub_date
1990-02-01 00:00:00pages
117-25issue
2eissn
0162-0134issn
1873-3344pii
0162-0134(90)84020-Pjournal_volume
38pub_type
杂志文章abstract::A number of oxidovanadium(IV) complexes have been reported to display anticancer activity. A theranostic approach, based on the simultaneous observation of both the effect of oxidovanadium(IV) complexes on cell viability and the disclosure of their intracellular fate, is possible by using oxidovanadium(IV) complexes f...
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
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(89)84003-6
更新日期:1989-01-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
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更新日期:2009-02-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2004.10.005
更新日期:2005-02-01 00:00:00
abstract::In a quest for more effective radiopharmaceuticals for pain palliation of metastatic bone cancer, this paper relates results obtained with 166Ho and 153Sm complexed to the bone seeking phosphonate, N,N-dimethylenephosphonate-1-hydroxy-4-aminopropylidenediphosphonate (APDDMP). APDDMP is synthesised from the known bone ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(00)00125-2
更新日期:2001-01-01 00:00:00
abstract::The reaction of N3- with Co,Zn superoxide dismutase, a good analogue of the native Cu,Zn enzyme, was studied in the presence and absence of phosphate, which is known to perturb the spectroscopic properties of the cobalt chromophore in the Co,Zn enzyme. EPR, NMR, and optical titrations demonstrated the formation of dif...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(88)80006-0
更新日期:1988-08-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(88)80005-9
更新日期:1988-08-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2015.08.024
更新日期:2015-11-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(01)00190-8
更新日期:2001-06-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.jinorgbio.2010.10.011
更新日期:2011-02-01 00:00:00
abstract::Complexes of cadmium(II) derivatives with adenine from water or by simulation of physiological conditions are obtained. The complexes have been studied by spectroscopic, conductometric, 1H-NMR, and by TG and DSC measurements. Possible coordination modes of the ligand are proposed. ...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(87)80023-5
更新日期:1987-02-01 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.2012.07.023
更新日期:2013-01-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2014.06.014
更新日期:2014-11-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(86)80037-x
更新日期:1986-01-01 00:00:00
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journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/s0162-0134(00)80238-x
更新日期:1981-12-01 00:00:00
abstract::The vitamin B(6) derivatives 4-pyridoxic acid (anionic) and the Schiff base N,N'-ethylenebis(pyridoxylideneiminato) react with UO(2)(NO(3))(2) * 6H(2)O to give [UO(2)(beta-pyracinide)(2)(H(2)O)] (beta-pyracin=4-pyridoxic acid) and [UO(2)(Pyr(2)en)DMSO]Cl(2)(Pyr(2)en=N,N'-ethylenebis(pyridoxylideneiminato); DMSO=dimeth...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2006.06.004
更新日期:2006-10-01 00:00:00
abstract::The present Mössbauer spectroscopic studies of isolated bacterioferritin and whole cells of Pseudomonas aeruginosa have shown that the iron core of bacterioferritin is not altered on isolation. These studies have also shown that the bacterioferritin core is typically 85% oxidized within the cell and may contain a sign...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(91)80046-k
更新日期:1991-09-01 00:00:00
abstract::A new Ru(II) complex, [Ru(bpy)(2)(dhipH3)](ClO4)(2) (in which bpy=2,2'-bipyridine, dhipH(3)=3,4-dihydroxy-imidado[4,5-f][1,10]-phenanthroline), was synthesized and characterized, and the pH effect on the emission spectra of the complex was studied. The interaction of the complex with calf thymus DNA was investigated b...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2004.02.021
更新日期:2004-06-01 00:00:00
abstract::In recent years larval stage zebrafish have been emerging as a standard vertebrate model in a number of fields, ranging from developmental biology to pharmacology and toxicology. The tyrosinase inhibitor 1-phenyl-2-thiourea (PTU) is used very widely with larval zebrafish to generate essentially transparent organisms t...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2015.07.003
更新日期:2015-10-01 00:00:00
abstract::A new Schiff base copper(II) complex, Cu(o-VANAHE)(2) (o-VANAHE = 2-(o-vanillinamino)-1-hydroxyethane), has been synthesized and characterized. Single crystal X-ray diffraction results suggest that this complex structure belongs to triclinic crystal system, space group P1 with the following crystallographic parameters...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2005.01.017
更新日期:2005-05-01 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::Partially purified selenoprotein P from rat plasma was digested with either trypsin, endoprotease Lys-C, or endoprotease Arg-C and analyzed by high pressure liquid chromatography and sodium dodecyl sulfate polyacrylamide gel electrophoresis. Several 75Se-labeled peptides were detected. The moles of selenium in selenop...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/0162-0134(90)80060-b
更新日期:1990-11-01 00:00:00
abstract::Seven ferrocenyl naphthalene diimide (FND) ligands were synthesized. Each had a higher affinity for tetraplex DNA than for either single- or double-stranded DNA. The FND binding affinities were >105M-1 in 0.10M AcOH-AcONa or AcOH-AcOK (pH5.5) containing 0.10M NaCl or KCl. The FNDs with the highest binding affinities f...
journal_title:Journal of inorganic biochemistry
pub_type: 杂志文章
doi:10.1016/j.jinorgbio.2016.11.020
更新日期:2017-02-01 00:00:00