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Kadej A, Kuczer M, Czarniewska E, Urbański A, Rosiński G, Kowalik-Jankowska T. High stability and biological activity of the copper(II) complexes of alloferon 1 analogues containing tryptophan. J Inorg Biochem 2016; 163:147-161. [PMID: 27453534 DOI: 10.1016/j.jinorgbio.2016.07.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 06/21/2016] [Accepted: 07/07/2016] [Indexed: 11/28/2022]
Abstract
Copper(II) complex formation processes between the alloferon 1 (Allo1) (HGVSGHGQHGVHG) analogues where the tryptophan residue is introducing in the place His residue H1W, H6W, H9W and H12W have been studied by potentiometric, UV-visible, CD and EPR spectroscopic, and MS methods. For all analogues of alloferon 1 complex speciation have been obtained for a 1:1 metal-to-ligand molar ratio and 2:1 of H1W because of precipitation at higher (2:1, 3:1 and 4:1) ratios. At physiological pH7.4 and a 1:1 metal-to-ligand molar ratio the tryptophan analogues of alloferon 1 form the CuH-1L and/or CuH-2L complexes with the 4N binding mode. The introduction of tryptophan in place of histidine residues changes the distribution diagram of the complexes formed with the change of pH and their stability constants compared to the respective substituted alanine analogues of alloferon 1. The CuH-1L, CuH-2L and CuH-3L complexes of the tryptophan analogues are more stable from 1 to 5 log units in comparison to those of the alanine analogues. This stabilization of the complexes may result from cation(Cu(II))-π and indole/imidazole ring interactions. The induction of apoptosis in vivo, in Tenebrio molitor cells by the ligands and their copper(II) complexes at pH7.4 was studied. The biological results show that copper(II) ions in vivo did not cause any apparent apoptotic features. The most active were the H12W peptide and Cu(II)-H12W complex formed at pH7.4.
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Affiliation(s)
- Agnieszka Kadej
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Mariola Kuczer
- Faculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Elżbieta Czarniewska
- Department of Animal Physiology and Development, Institute of Experimental Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland
| | - Arkadiusz Urbański
- Department of Animal Physiology and Development, Institute of Experimental Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland; Department of Systematic Zoology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland
| | - Grzegorz Rosiński
- Department of Animal Physiology and Development, Institute of Experimental Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland
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Copper-induced structural propensities of the amyloidogenic region of human prion protein. J Biol Inorg Chem 2014; 19:635-45. [DOI: 10.1007/s00775-014-1132-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Accepted: 04/02/2014] [Indexed: 12/15/2022]
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Hernández-Guzmán J, Sun L, Mehta AK, Dong J, Lynn DG, Warncke K. Copper(II)-bis-histidine coordination structure in a fibrillar amyloid β-peptide fragment and model complexes revealed by electron spin echo envelope modulation spectroscopy. Chembiochem 2013; 14:1762-71. [PMID: 24014287 PMCID: PMC3864031 DOI: 10.1002/cbic.201300236] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Indexed: 11/09/2022]
Abstract
Truncated and mutated amyloid-β (Aβ) peptides are models for systematic study-in homogeneous preparations-of the molecular origins of metal ion effects on Aβ aggregation rates, types of aggregate structures formed, and cytotoxicity. The 3D geometry of bis-histidine imidazole coordination of Cu(II) in fibrils of the nonapetide acetyl-Aβ(13-21)H14A has been determined by powder (14) N electron spin echo envelope modulation (ESEEM) spectroscopy. The method of simulation of the anisotropic combination modulation is described and benchmarked for a Cu(II) -bis-cis-imidazole complex of known structure. The revealed bis-cis coordination mode, and the mutual orientation of the imidazole rings, for Cu(II) in Ac-Aβ(13-21)H14A fibrils are consistent with the proposed β-sheet structural model and pairwise peptide interaction with Cu(II) , with an alternating [-metal-vacancy-]n pattern, along the N-terminal edge. Metal coordination does not significantly distort the intra-β-strand peptide interactions, which provides a possible explanation for the acceleration of Ac-Aβ(13-21)H14A fibrillization by Cu(II) , through stabilization of the associated state and low-reorganization integration of β-strand peptide pair precursors.
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Affiliation(s)
- Jessica Hernández-Guzmán
- Dr. J. Hernández-Guzmán, Dr. L. Sun, Prof. K. Warncke Department of Physics Emory University Atlanta, Georgia 30322-2430
| | - Li Sun
- Dr. J. Hernández-Guzmán, Dr. L. Sun, Prof. K. Warncke Department of Physics Emory University Atlanta, Georgia 30322-2430
| | - Anil K. Mehta
- Dr. A. K. Mehta, Dr. J. Dong, Prof. D. G. Lynn Department of Chemistry Emory University Atlanta, Georgia 30322-2430
| | - Jijun Dong
- Dr. A. K. Mehta, Dr. J. Dong, Prof. D. G. Lynn Department of Chemistry Emory University Atlanta, Georgia 30322-2430
| | - David G. Lynn
- Dr. A. K. Mehta, Dr. J. Dong, Prof. D. G. Lynn Department of Chemistry Emory University Atlanta, Georgia 30322-2430
| | - Kurt Warncke
- Dr. J. Hernández-Guzmán, Dr. L. Sun, Prof. K. Warncke Department of Physics Emory University Atlanta, Georgia 30322-2430
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Mahadevi AS, Sastry GN. Cation-π interaction: its role and relevance in chemistry, biology, and material science. Chem Rev 2012; 113:2100-38. [PMID: 23145968 DOI: 10.1021/cr300222d] [Citation(s) in RCA: 728] [Impact Index Per Article: 60.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- A Subha Mahadevi
- Molecular Modeling Group, CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 607, Andhra Pradesh, India
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6
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Linden R, Cordeiro Y, Lima LMTR. Allosteric function and dysfunction of the prion protein. Cell Mol Life Sci 2012; 69:1105-24. [PMID: 21984610 PMCID: PMC11114699 DOI: 10.1007/s00018-011-0847-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 09/16/2011] [Accepted: 09/20/2011] [Indexed: 12/30/2022]
Abstract
Transmissible spongiform encephalopathies (TSEs) are neurodegenerative diseases associated with progressive oligo- and multimerization of the prion protein (PrP(C)), its conformational conversion, aggregation and precipitation. We recently proposed that PrP(C) serves as a cell surface scaffold protein for a variety of signaling modules, the effects of which translate into wide-range functional consequences. Here we review evidence for allosteric functions of PrP(C), which constitute a common property of scaffold proteins. The available data suggest that allosteric effects among PrP(C) and its partners are involved in the assembly of multi-component signaling modules at the cell surface, impose upon both physiological and pathological conformational responses of PrP(C), and that allosteric dysfunction of PrP(C) has the potential to entail progressive signal corruption. These properties may be germane both to physiological roles of PrP(C), as well as to the pathogenesis of the TSEs and other degenerative/non-communicable diseases.
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Affiliation(s)
- Rafael Linden
- Instituto de Biofísica Carlos Chagas Filho, UFRJ, CCS, Cidade Universitária, Rio de Janeiro, Brazil.
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Rivillas-Acevedo L, Grande-Aztatzi R, Lomelí I, García JE, Barrios E, Teloxa S, Vela A, Quintanar L. Spectroscopic and Electronic Structure Studies of Copper(II) Binding to His111 in the Human Prion Protein Fragment 106−115: Evaluating the Role of Protons and Methionine Residues. Inorg Chem 2011; 50:1956-72. [DOI: 10.1021/ic102381j] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lina Rivillas-Acevedo
- Departamento de Química, Centro de Investigación y de Estudios Avanzados (Cinvestav), 07360, D.F., Mexico
| | - Rafael Grande-Aztatzi
- Departamento de Química, Centro de Investigación y de Estudios Avanzados (Cinvestav), 07360, D.F., Mexico
| | - Italia Lomelí
- Departamento de Química, Centro de Investigación y de Estudios Avanzados (Cinvestav), 07360, D.F., Mexico
| | - Javier E. García
- Departamento de Química, Centro de Investigación y de Estudios Avanzados (Cinvestav), 07360, D.F., Mexico
| | - Erika Barrios
- Departamento de Química, Centro de Investigación y de Estudios Avanzados (Cinvestav), 07360, D.F., Mexico
| | - Sarai Teloxa
- Departamento de Química, Centro de Investigación y de Estudios Avanzados (Cinvestav), 07360, D.F., Mexico
| | - Alberto Vela
- Departamento de Química, Centro de Investigación y de Estudios Avanzados (Cinvestav), 07360, D.F., Mexico
| | - Liliana Quintanar
- Departamento de Química, Centro de Investigación y de Estudios Avanzados (Cinvestav), 07360, D.F., Mexico
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Yang CM, Zhang J. Insights into intramolecular Trp and His side-chain orientation and stereospecific π interactions surrounding metal centers: an investigation using protein metal-site mimicry in solution. Chemistry 2011; 16:10854-65. [PMID: 20669189 DOI: 10.1002/chem.200903149] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Metal-binding scaffolds incorporating a Trp/His-paired epitope are instrumental in giving novel insights into the physicochemical basis of functional and mechanistic versatility conferred by the Trp-His interplay at a metal site. Herein, by coupling biometal site mimicry and (1)H and (13)C NMR spectroscopy experiments, modular constructs EDTA-(L-Trp, L-His) (EWH; EDTA=ethylenediamino tetraacetic acid) and DTPA-(L-Trp, L-His) (DWH; DTPA=diethylenetriamino pentaacetic acid) were employed to dissect the static and transient physicochemical properties of hydrophobic/hydrophilic aromatic interactive modes surrounding biometal centers. The binding feature and identities of the stoichiometric metal-bound complexes in solution were investigated by using (1)H and (13)C NMR spectroscopy, which facilitated a cross-validation of the carboxylate, amide oxygen, and tertiary amino groups as the primary ligands and indole as the secondary ligand, with the imidazole (Im) N3 nitrogen being weakly bound to metals such as Ca(2+) owing to a multivalency effect. Surrounding the metal centers, the stereospecific orientation of aromatic rings in the diastereoisomerism is interpreted with the Ca(2+)-EWH complex. With respect to perturbed Trp side-chain rotamer heterogeneity, drastically restricted Trp side-chain flexibility and thus a dynamically constrained rotamer interconversion due to π interactions is evident from the site-selective (13)C NMR spectroscopic signal broadening of the Trp indolyl C3 atom. Furthermore, effects of Trp side-chain fluctuation on indole/Im orientation were the subject of a 2D NMR spectroscopy study by using the Ca(2+)-bound state; a C-H2(indolyl)/C-H5(Im(+)) connectivity observed in the NOESY spectra captured direct evidence that the N-H1 of the Ca(2+)-Im(+) unit interacted with the pyrrole ring of the indole unit in Ca(2+)-bound EWH but not in DWH, which is assignable to a moderately static, anomalous, T-shaped, interplanar π(+)-π stacking alignment. Nevertheless, a comparative (13)C NMR spectroscopy study of the two homologous scaffolds revealed that the overall response of the indole unit arises predominantly from global attractions between the indole ring and the entire positively charged first coordination sphere. The study thus demonstrates the coordination-sphere/geometry dependence of the Trp/His side-chain interplay, and established that π interactions allow (13)C NMR spectroscopy to offer a new window for investigating Trp rotamer heterogeneity near metal-binding centers.
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Affiliation(s)
- Chi Ming Yang
- Neurochemistry & Biophysical Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
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Ming Yang C. Biometal binding-site mimicry with modular, hetero-bifunctionally modified architecture encompassing a Trp/His motif: Insights into spatiotemporal noncovalent interactions from a comparative spectroscopic study. Dalton Trans 2011; 40:3008-27. [DOI: 10.1039/c0dt00237b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Valensin G, Molteni E, Valensin D, Taraszkiewicz M, Kozlowski H. Molecular Dynamics Study of the Cu2+ Binding-Induced “Structuring” of the N-Terminal Domain of Human Prion Protein. J Phys Chem B 2009; 113:3277-9. [DOI: 10.1021/jp901030a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gianni Valensin
- Department of Chemistry, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy, and Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Elena Molteni
- Department of Chemistry, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy, and Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Daniela Valensin
- Department of Chemistry, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy, and Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Magdalena Taraszkiewicz
- Department of Chemistry, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy, and Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Henryk Kozlowski
- Department of Chemistry, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy, and Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
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11
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Yorita H, Otomo K, Hiramatsu H, Toyama A, Miura T, Takeuchi H. Evidence for the Cation−π Interaction between Cu2+ and Tryptophan. J Am Chem Soc 2008; 130:15266-7. [DOI: 10.1021/ja807010f] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hanami Yorita
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Kohei Otomo
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Hirotsugu Hiramatsu
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Akira Toyama
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Takashi Miura
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
| | - Hideo Takeuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
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