1
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Armentrout PB. Perspective: intrinsic interactions of metal ions with biological molecules as studied by threshold collision-induced dissociation and infrared multiple photon dissociation. Phys Chem Chem Phys 2024. [PMID: 39042103 DOI: 10.1039/d4cp00897a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
In this perspective, gas-phase studies of group 1 monocations and group 12 dications with amino acids and small peptides are highlighted. Although the focus is on two experimental techniques, threshold collision-induced dissociation and infrared multiple photon dissociation action spectroscopy, these methods as well as complementary approaches are summarized. The synergistic interplay with theory, made particularly powerful by the small sizes of the systems explored and the absence of solvent and support, is also elucidated. Importantly, these gas-phase methods permit quantitative insight into the structures and thermodynamics of metal cations interacting with biological molecules. Periodic trends in how these interactions vary as the metal cations get heavier are discussed as are quantitative trends with changes in the amino acid side chain and effects of hydration. Such trends allow these results to transcend the limitations associated with the biomimetic model systems.
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Affiliation(s)
- P B Armentrout
- Department of Chemistry, University of Utah, Salt Lake City, UT 84112, USA.
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2
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Zaidi NH, Akram M. A Kinetic Investigation of Metal-Dipeptide Complex with Ninhydrin in the Absence and Presence of CTAB Micelles. J Oleo Sci 2020; 69:1427-1436. [PMID: 33055444 DOI: 10.5650/jos.ess20131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This paper presents the results of a kinetic study performed between ninhydrin and a Ni(II) dipeptide complex under various conditions. The rate of formation of the imine adduct was measured spectrophotometrically both in plain aqueous media and in aqueous micellar media in which CTAB (cetyltrimethylammonium bromide) is used as the surfactant. These studies were carried out at pH 5 and over a temperature a range of 50 to 70°C. Studies were also conducted to elucidate the effect of some organic sodium salts on the rate of this reaction. In these studies, it was found that the formation of imine adduct followed a first-order kinetics with respect to [Ni(II)-Gly-Leu]+ in both aqueous and micellar medium. A fractional-order kinetics was observed with respect to ninhydrin, again in both aqueous and micellar media. Increase in the total concentration of CTAB from 0 to 40×10-3 mol dm-3 resulted in approximately two folds increase in the pseudo-first-order rate constant (kψ). The rate constant (kΨ) in micellar medium first increased with increase in CTAB concentration, reached a maximum value, and finally, with further increase in CTAB concentration, a decreasing effect was observed. Quantitative kinetic analysis of kψ-[CTAB] data was performed on the basis of the pseudo-phase model of the micelles. The rate profile in presence of CTAB suggests a cooperative effect in the enhanced formation of the imine adduct as is commonly found in enzyme catalyzed reactions. Addition of organic sodium salts (such as benzoate, salicylate and tosylate) enhanced the rate at lower concentrations but rates start to decrease at higher concentrations. This suggests that tightly binding organic counter-anions were the most effective. Viscosity of the reaction media seems to affect the kinetic behavior in micellar media.
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Affiliation(s)
- Neelam Hazoor Zaidi
- Department of Chemistry, School of Pure Science, College of Engineering Science and Technology, Fiji National University
| | - Mohd Akram
- Department of Chemistry, Aligarh Muslim University
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3
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Le T, Nguyen H, Perez LM, Darensbourg DJ, Darensbourg MY. Metal‐Templated, Tight Loop Conformation of a Cys‐X‐Cys Biomimetic Assembles a Dimanganese Complex. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Trung Le
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77843 USA
| | - Hao Nguyen
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77843 USA
| | - Lisa M. Perez
- Department of Chemistry Texas A&M University 3255 TAMU College Station TX 77843 USA
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4
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Buchanan C, Garvey CJ, Puskar L, Perlmutter P, Mechler A. Coordination crosslinking of helical substituted oligoamide nanorods with Cu(II). Supramol Chem 2020. [DOI: 10.1080/10610278.2020.1730839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Claire Buchanan
- Department of Chemistry and Physics, La Trobe University, Bundoora, Australia
| | - Christopher J Garvey
- Australian Nuclear Science and Technology Organization (ANSTO), Lucas Heights, Australia
- Lund Institute for Advanced Neutron and X-ray Science (LINXS), Lund, Sweden
- Biofilms Research Center for Biointerfaces, Department of Biomedical Science, Health and Society, Malmö University, Malmö, Sweden
| | - Ljiljana Puskar
- Helmholtz Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany
| | - Patrick Perlmutter
- Department of Chemistry and Physics, La Trobe University, Bundoora, Australia
| | - Adam Mechler
- Department of Chemistry and Physics, La Trobe University, Bundoora, Australia
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5
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Le T, Nguyen H, Perez LM, Darensbourg DJ, Darensbourg MY. Metal-Templated, Tight Loop Conformation of a Cys-X-Cys Biomimetic Assembles a Dimanganese Complex. Angew Chem Int Ed Engl 2020; 59:3645-3649. [PMID: 31851781 DOI: 10.1002/anie.201913259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Indexed: 11/10/2022]
Abstract
With the goal of generating anionic analogues to MN2 S2 ⋅Mn(CO)3 Br we introduced metallodithiolate ligands, MN2 S2 2- prepared from the Cys-X-Cys biomimetic, ema4- ligand (ema=N,N'-ethylenebis(mercaptoacetamide); M=NiII , [VIV ≡O]2+ and FeIII ) to Mn(CO)5 Br. An unexpected, remarkably stable dimanganese product, (H2 N2 (CH2 C=O(μ-S))2 )[Mn(CO)3 ]2 resulted from loss of M originally residing in the N2 S2 4- pocket, replaced by protonation at the amido nitrogens, generating H2 ema2- . Accordingly, the ema ligand has switched its coordination mode from an N2 S2 4- cavity holding a single metal, to a binucleating H2 ema2- with bridging sulfurs and carboxamide oxygens within Mn-μ-S-CH2 -C-O, 5-membered rings. In situ metal-templating by zinc ions gives quantitative yields of the Mn2 product. By computational studies we compared the conformations of "linear" ema4- to ema4- frozen in the "tight-loop" around single metals, and to the "looser" fold possible for H2 ema2- that is the optimal arrangement for binucleation. XRD molecular structures show extensive H-bonding at the amido-nitrogen protons in the solid state.
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Affiliation(s)
- Trung Le
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX, 77843, USA
| | - Hao Nguyen
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX, 77843, USA
| | - Lisa M Perez
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX, 77843, USA
| | - Donald J Darensbourg
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX, 77843, USA
| | - Marcetta Y Darensbourg
- Department of Chemistry, Texas A&M University, 3255 TAMU, College Station, TX, 77843, USA
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6
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Li J, Zheng Y, Zhao J, Austin DE, Zhang Z. Matrix-assisted nanoelectrospray mass spectrometry for soft ionization of metal( i)–protein complexes. Analyst 2020; 145:1646-1656. [DOI: 10.1039/c9an02117e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal ions play significant roles in biological processes, and investigation of metal–protein interactions provides a basis to understand the functions of metal ions in such systems.
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Affiliation(s)
- Jin Li
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Yajun Zheng
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Jia Zhao
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Daniel E. Austin
- Department of Chemistry and Biochemistry
- Brigham Young University
- Provo
- USA
| | - Zhiping Zhang
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
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7
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Wang Y, Lai CK, Lau JKC, Hopkinson AC, Siu KWM. Structures and Dissociation Products of Ce/Peptide Complexes: Competition between Coordination and Charge Delocalization. J Phys Chem B 2019; 123:5229-5237. [PMID: 31242740 DOI: 10.1021/acs.jpcb.9b03098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Structures of [Ce(GGG)]3+ and [Ce(GGG ? H)]2+ have been investigated by DFT calculations. The two lowest-energy structures of the triply charged metal complex have the peptide in either the iminol or conventional zwitterionic form, and these ions have almost identical energies. In the doubly charged complex, the iminol and charge-solvated structures are the best structures on the potential energy surface, but the latter is favored. In both iminol structures, the metal ion coordinates to the iminol oxygen rather than to the nitrogen, unlike in previously reported iminol-containing complexes. Triply charged [Ce(peptide)]3+ complexes are fragile and not easily isolated in a mass spectrometer, whereas the doubly charged [Ce(peptide ? H)]2+ complexes are more robust. Here, we studied the fragmentations of 37 [Ce(peptide ? H)]2+ and 30 [Ce(peptide)(peptide ? H)]2+ complexes and the results are systematically summarized. Losses of CO and/or H2O are the most commonly observed fragmentation channels for [Ce(peptide ? H)]2+ complexes and these dissociation pathways are modeled by DFT calculations. For [Ce(peptide)(peptide ? H)]2+ complexes the neutral peptide plays the role of a solvent molecule but, unlike in the dissociations of [Ce(CH3CN)(peptide ? H)]2+ complexes, the loss of the solvent molecule is not observed. Instead, fragmentation occurs by cleavage of the second amide bond of the solvating peptide molecule.
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Affiliation(s)
- Yating Wang
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada
| | - Cheuk-Kuen Lai
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada
| | - Justin Kai-Chi Lau
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada.,Department of Chemistry and Biochemistry , University of Windsor , 401 Sunset Avenue , Windsor , Ontario N9B 3P4 , Canada
| | - Alan C Hopkinson
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada
| | - K W Michael Siu
- Department of Chemistry and Centre for Research in Mass Spectrometry , York University , 4700 Keele Street , Toronto , Ontario M3J 1P3 , Canada.,Department of Chemistry and Biochemistry , University of Windsor , 401 Sunset Avenue , Windsor , Ontario N9B 3P4 , Canada
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8
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Munshi MU, Martens J, Berden G, Oomens J. Gas-Phase Infrared Ion Spectroscopy Characterization of Cu(II/I)Cyclam and Cu(II/I)2,2'-Bipyridine Redox Pairs. J Phys Chem A 2019; 123:4149-4157. [PMID: 31021091 PMCID: PMC6526468 DOI: 10.1021/acs.jpca.9b00793] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
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We report the fingerprint
IR spectra of mass-isolated gaseous coordination
complexes of 2,2′-bipyridine (bpy) and 1,4,8,11-tetra-azacyclotetradecane
(cyclam) with a copper ion in its I and II oxidation states. Experiments
are carried out in a quadrupole ion trap (QIT) mass spectrometer coupled
to the FELIX infrared free-electron laser. Dications are prepared
using electrospray ionization (ESI), while monocations are generated
by charge reduction of the dication using electron transfer-reduction
(ETR) in the QIT. Interestingly, [Cu(bpy)2]+ can also be generated directly using ESI, so that its geometries
as produced from ETR and ESI can be compared. The effects of charge
reduction on the IR spectra are investigated by comparing the experimental
spectra with the IR spectra modeled by density functional theory.
Reduction of Cu(II) to the closed-shell Cu(I) ion retains the square-planar
geometry of the Cu–cyclam complex. In contrast, for the bis–bpy
complex with Cu, charge reduction induces a conversion from a near-square-planar
to a tetrahedral geometry. The geometry of [Cu(bpy)2]+ is identical to that of the complex generated directly from
ESI as a native structure, which indicates that the ETR product ion
thermalizes. For [Cu(cyclam)]+, however, the square-planar
geometry of the 2+ complex is retained upon charge reduction, although
a (distorted) tetrahedral geometry was predicted to be lower in energy.
These differences are attributed to different barriers to rearrangement.
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Affiliation(s)
- Musleh Uddin Munshi
- Radboud University , Institute for Molecules and Materials, FELIX Laboratory , Toernooiveld 7 , 6525 ED Nijmegen , The Netherlands
| | - Jonathan Martens
- Radboud University , Institute for Molecules and Materials, FELIX Laboratory , Toernooiveld 7 , 6525 ED Nijmegen , The Netherlands
| | - Giel Berden
- Radboud University , Institute for Molecules and Materials, FELIX Laboratory , Toernooiveld 7 , 6525 ED Nijmegen , The Netherlands
| | - Jos Oomens
- Radboud University , Institute for Molecules and Materials, FELIX Laboratory , Toernooiveld 7 , 6525 ED Nijmegen , The Netherlands.,University of Amsterdam , Science Park 904 , 1098 XH Amsterdam , The Netherlands
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9
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Oomens J, Polfer NC, Berden G, Eyler JR. Gas-phase metal ion chelation investigated with IRMPD spectroscopy: A brief review of Robert Dunbar's contributions. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2019; 25:86-96. [PMID: 30205710 DOI: 10.1177/1469066718799175] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
With the passing of Prof. Robert C. Dunbar on 31 October 2017, the field of ion chemistry lost one of its modern heroes. Throughout his career in mass spectrometry, two of his main research interests involved the interaction of trapped ions with electromagnetic radiation and the chelation motifs of metal ions with organic ligands. The focus of his early career was on the fundamental processes that take place in molecules upon ultraviolet and infrared excitation. From 2003 to 2017, his scientific interests shifted to more structural questions, notably to resolving the structures and binding motifs of metal ion chelation complexes by application of infrared photodissociation spectroscopy. These experiments were carried out during numerous visits to the (Free Electron Laser for Infrared eXperiments) (FELIX) facility in the Netherlands and were complemented by extensive theoretical investigations by Rob. As a tribute to our friend, we present in this contribution a brief review of this work.
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Affiliation(s)
- Jos Oomens
- 1 FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
- 2 Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - Nicolas C Polfer
- 3 Department of Chemistry, University of Florida, Gainesville, Florida, USA
| | - Giel Berden
- 1 FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - John R Eyler
- 3 Department of Chemistry, University of Florida, Gainesville, Florida, USA
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10
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Heller J, Ončák M, Bersenkowitsch NK, van der Linde C, Beyer MK. Infrared multiple photon dissociation of cesium iodide clusters doped with mono-, di- and triglycine. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2019; 25:122-132. [PMID: 30284923 PMCID: PMC7100558 DOI: 10.1177/1469066718803307] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Charged cesium iodide clusters doped with mono-, di- and triglycine serve as a model system for sea salt aerosols containing biological molecules. Here, we investigate reactions of these complexes under infrared irradiation, with spectra obtained by infrared multiple photon dissociation. The cluster ions are generated via electrospray ionization and analyzed in the cell of a Fourier Transform Ion Cyclotron Resonance Mass Spectrometer. Depending on the cluster size and peptide length, loss of HI or loss of a glycine unit is observed. The experimental measurements are supported by quantum chemical calculations. We show that N-H and O-H stretching modes dominate the spectrum, with large shifts depending on local interactions, namely due to interaction with iodide anions or intramolecular hydrogen bonding. Both experiment and theory indicate that several isomers are present in the experimental mixture, with different infrared fingerprints as well as dissociation pathways.
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Affiliation(s)
- Jakob Heller
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
| | - Milan Ončák
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
| | - Nina K Bersenkowitsch
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
| | | | - Martin K Beyer
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Innsbruck, Austria
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11
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Rodgers MT. Robert C. Dunbar: CURRICULUM VITAE: June 26, 1943, Boston, Massachusetts-October 31, 2017, Cleveland, Ohio. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2019; 25:8-15. [PMID: 30773921 DOI: 10.1177/1469066718817618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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12
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Owen CJ, Boles GC, Berden G, Oomens J, Armentrout PB. Experimental and theoretical investigations of infrared multiple photon dissociation spectra of lysine complexes with Zn 2+ and Cd 2. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2019; 25:97-111. [PMID: 30526028 DOI: 10.1177/1469066718792902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The gas-phase structures of zinc and cadmium complexes of lysine (Lys) are investigated via a combination of infrared multiple photon dissociation action spectroscopy and ab initio quantum chemical calculations. In order to unambiguously identify the experimentally observed species, [Zn(Lys-H)]+ and CdCl+(Lys), the action spectra were compared to linear absorption spectra calculated at the B3LYP level of theory, using 6-311+G(d,p) and def2-TVZP basis sets for the zinc and cadmium systems, respectively. Single point energies were also calculated at the B3LYP, B3P86, MP2, and B3LYP-GD3BJ (accounting for empirical dispersion) levels of theory using larger basis sets. Identification of the experimentally formed isomers is possible through good agreement between infrared multiple photon dissociation action spectra and the theoretically predicted spectra. The [Zn(Lys-H)]+ complex adopts a tridentate orientation involving the amino acid backbone amine and deprotonated carboxylic acid groups as well as the side-chain amine group, [Nα,CO-,Nɛ]. The CdCl+(Lys) complex similarly adopts a tridentate chelation involving the amino acid backbone amine and carbonyl groups, as well as the side-chain amine group, [Nα,CO,Nɛ]. In both cases, the identified complexes are the lowest energy gas-phase structures at all levels of theory.
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Affiliation(s)
- Cameron J Owen
- 1 Department of Chemistry, University of Utah, Salt Lake City, USA
| | - Georgia C Boles
- 1 Department of Chemistry, University of Utah, Salt Lake City, USA
| | - Giel Berden
- 2 FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Jos Oomens
- 2 FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
- 3 Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - P B Armentrout
- 1 Department of Chemistry, University of Utah, Salt Lake City, USA
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13
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Schneeberger EM, Breuker K. Replacing H + by Na + or K + in phosphopeptide anions and cations prevents electron capture dissociation. Chem Sci 2018; 9:7338-7353. [PMID: 30542537 PMCID: PMC6237128 DOI: 10.1039/c8sc02470g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 07/07/2018] [Indexed: 01/29/2023] Open
Abstract
By successively replacing H+ by Na+ or K+ in phosphopeptide anions and cations, we show that the efficiency of fragmentation into c and z˙ or c˙ and z fragments from N-Cα backbone bond cleavage by negative ion electron capture dissociation (niECD) and electron capture dissociation (ECD) substantially decreases with increasing number of alkali ions attached. In proton-deficient phosphopeptide ions with a net charge of 2-, we observed an exponential decrease in electron capture efficiency with increasing number of Na+ or K+ ions attached, suggesting that electrons are preferentially captured at protonated sites. In proton-abundant phosphopeptide ions with a net charge of 3+, the electron capture efficiency was not affected by replacing up to four H+ ions with Na+ or K+ ions, but the yield of c, z˙ and c˙, z fragments from N-Cα backbone bond cleavage generally decreased next to Na+ or K+ binding sites. We interpret the site-specific decrease in fragmentation efficiency as Na+ or K+ binding to backbone amide oxygen in competition with interactions of protonated sites that would otherwise lead to backbone cleavage into c, z˙ or c˙, z fragments. Our findings seriously challenge the hypothesis that the positive charge responsible for ECD into c, z˙ or c˙, z fragments can generally be a sodium or other metal ion instead of a proton.
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Affiliation(s)
- Eva-Maria Schneeberger
- Institute of Organic Chemistry , Center for Molecular Biosciences Innsbruck (CMBI) , University of Innsbruck , Innrain 80/82 , 6020 Innsbruck , Austria . ; http://www.bioms-breuker.at/
| | - Kathrin Breuker
- Institute of Organic Chemistry , Center for Molecular Biosciences Innsbruck (CMBI) , University of Innsbruck , Innrain 80/82 , 6020 Innsbruck , Austria . ; http://www.bioms-breuker.at/
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14
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Dunbar RC, Martens J, Berden G, Oomens J. Binding of Divalent Metal Ions with Deprotonated Peptides: Do Gas-Phase Anions Parallel the Condensed Phase? J Phys Chem A 2018; 122:5589-5596. [PMID: 29847124 PMCID: PMC6026845 DOI: 10.1021/acs.jpca.8b02926] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
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Chelation complexes
of the histidine-containing tripeptides HisAlaAla,
AlaHisAla, and AlaAlaHis with Ni(II) and Cu(II) having a −1
net charge are characterized in the gas phase by infrared multiple-photon
dissociation (IRMPD) spectroscopy and density functional theory calculations.
We address the question of whether the gas-phase complexes carry over
characteristics from the corresponding condensed-phase species. We
focus particularly on three aspects of their structure: (i) square-planar
chelation by the deprotonated amide nitrogens around the metal ion
(low-spin for the Ni case), (ii) metal-ion coordination of the imidazole
side chain nitrogen, and (iii) the exceptional preference for metal-ion
chelation by peptides with His in the third position from the N-terminus,
as in the amino terminal Cu and Ni (ATCUN) motif. We find that square-planar
binding around the metal ion, involving bonds to both deprotonated
backbone nitrogens, one of the carboxylate oxygens and the N-terminal
nitrogen, is the dominant binding motif for all three isomers. In
contrast to the condensed-phase behavior, the dominant mode of binding
for all three isomers does not involve the imidazole side chain, which
is instead placed outside the coordination zone. Only for the AlaAlaHis
isomer, the imidazole-bound structure is also detected as a minority
population, as identified from a distinctive short-wavelength IR absorption.
The observation that this conformation exists only for AlaAlaHis correlates
with condensed-phase behavior at neutral-to-basic pH, in the sense
that the isomer with His in the third position is exceptionally disposed
to metal ion chelation by four nitrogen atoms (4N) when compared with
the other isomers. These results also emphasize the divergence between
the conformational stabilities in the gas phase and in solution or
crystalline environments: in the gas phase, direct metal binding of
the imidazole is overall less favorable than the alternative of a
remote imidazole that can act as an intramolecular H-bond donor enhancing
the gas-phase stability.
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Affiliation(s)
- Robert C Dunbar
- Chemistry Department , Case Western Reserve University , Cleveland , Ohio 44106 , United States
| | - Jonathan Martens
- Radboud University, Institute for Molecules and Materials , FELIX Laboratory , Toernooiveld 7c , 6525ED Nijmegen , The Netherlands
| | - Giel Berden
- Radboud University, Institute for Molecules and Materials , FELIX Laboratory , Toernooiveld 7c , 6525ED Nijmegen , The Netherlands
| | - Jos Oomens
- Radboud University, Institute for Molecules and Materials , FELIX Laboratory , Toernooiveld 7c , 6525ED Nijmegen , The Netherlands.,University of Amsterdam , Science Park 904 , 1098XH Amsterdam , The Netherlands
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15
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Remelli M, Brasili D, Guerrini R, Pontecchiani F, Potocki S, Rowinska-Zyrek M, Watly J, Kozlowski H. Zn(II) and Ni(II) complexes with poly-histidyl peptides derived from a snake venom. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.05.070] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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16
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Yu X, Chau MC, Tang WK, Siu CK, Yao ZP. Self-Assembled Binuclear Cu(II)–Histidine Complex for Absolute Configuration and Enantiomeric Excess Determination of Naproxen by Tandem Mass Spectrometry. Anal Chem 2018; 90:4089-4097. [DOI: 10.1021/acs.analchem.7b05407] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiangying Yu
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation) and Shenzhen Key Laboratory of Food Biological Safety Control, Shenzhen Research Institute of Hong Kong Polytechnic University, Shenzhen 518057, China
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China
| | - Man-Chu Chau
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, China
| | - Wai Kit Tang
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, China
| | - Chi-Kit Siu
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, China
| | - Zhong-Ping Yao
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation) and Shenzhen Key Laboratory of Food Biological Safety Control, Shenzhen Research Institute of Hong Kong Polytechnic University, Shenzhen 518057, China
- State Key Laboratory of Chirosciences, Food Safety and Technology Research Centre and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
- Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules (Yanbian University), Ministry of Education, Yanji 133002, Jilin, China
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17
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Jašíková L, Roithová J. Infrared Multiphoton Dissociation Spectroscopy with Free-Electron Lasers: On the Road from Small Molecules to Biomolecules. Chemistry 2018; 24:3374-3390. [PMID: 29314303 DOI: 10.1002/chem.201705692] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Indexed: 01/07/2023]
Abstract
Infrared multiphoton dissociation (IRMPD) spectroscopy is commonly used to determine the structure of isolated, mass-selected ions in the gas phase. This method has been widely used since it became available at free-electron laser (FEL) user facilities. Thus, in this Minireview, we examine the use of IRMPD/FEL spectroscopy for investigating ions derived from small molecules, metal complexes, organometallic compounds and biorelevant ions. Furthermore, we outline new applications of IRMPD spectroscopy to study biomolecules.
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Affiliation(s)
- Lucie Jašíková
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2, 128 43, Czech Republic
| | - Jana Roithová
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 2, 128 43, Czech Republic
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18
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Dunbar RC, Martens J, Berden G, Oomens J. Water Microsolvation Can Switch the Binding Mode of Ni(II) with Small Peptides. J Phys Chem Lett 2017; 8:2634-2638. [PMID: 28537749 DOI: 10.1021/acs.jpclett.7b00973] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ni(II) ions can be caged by surrounding peptide ligands in two basic binding patterns: the "iminol" (IM) binding pattern, where chelation occurs by deprotonated amide nitrogens, or the charge-solvated (CS) binding pattern, where chelation occurs by amide carbonyl oxygens. Gas-phase observation may clarify the factors affecting this choice in solution and in peptide and protein matrices. Infrared spectroscopic determination of gas-phase structures shows here how microsolvation by just one water molecule switches the balance of this choice from IM to CS for the Ni2+Gly3 complex, in contrast with the always-CS structure of the Ni2+Gly4 complex. Quantum-chemical calculations indicate that CS complexation is even more favored in the aqueous limit. Considering gas-phase conditions as comparable to low-pH solutions can reconcile this prediction with the common observation of IM-type binding in solutions at higher pH. This is likely the first gas-phase observation of solvation-induced IM-to-CS transition in oligopeptide complexes with doubly charged transition-metal ions.
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Affiliation(s)
- Robert C Dunbar
- Chemistry Department, Case Western Reserve University , Cleveland, Ohio 44106, United States
| | - Jonathan Martens
- Radboud University , Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
| | - Giel Berden
- Radboud University , Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
| | - Jos Oomens
- Radboud University , Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
- University of Amsterdam , Science Park 904, 1098XH Amsterdam, The Netherlands
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