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Živanović AS, Bukonjić AM, Jovanović-Stević S, Bogojeski J, Ćoćić D, Bijelić AP, Ratković ZR, Volarević V, Miloradović D, Tomović DL, Radić GP. Complexes of copper(II) with tetradentate S,O-ligands: Synthesis, characterization, DNA/albumin interactions, molecular docking simulations and antitumor activity. J Inorg Biochem 2022; 233:111861. [DOI: 10.1016/j.jinorgbio.2022.111861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 05/02/2022] [Accepted: 05/08/2022] [Indexed: 11/29/2022]
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2
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Mashima K, Nishii Y, Nagae H. Catalytic Cleavage of Amide C-N Bond: Scandium, Manganese, and Zinc Catalysts for Esterification of Amides. CHEM REC 2019; 20:332-343. [PMID: 31507072 DOI: 10.1002/tcr.201900044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/20/2019] [Indexed: 11/06/2022]
Abstract
Amide C-N bonds are thermodynamically stable and their fission, such as by hydrolysis and alcoholysis, is considered a long-challenging organic reaction. In general, stoichiometric chemical transformations of amides into the corresponding esters and acids require harsh conditions, such as strong acids/bases at a high reaction temperature. Accordingly, the development of catalytic reactions that cleave not only primary and secondary amides, but also tertiary amides in mild conditions, is in high demand. Herein, we surveyed typical stoichiometric transformations of amides, and highlight our recent achievements in the catalytic esterification of amides using scandium, manganese, and zinc catalysts, together with some recent catalyst systems using late-transition metal reported by other groups.
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Affiliation(s)
- Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University Toyonaka, Osaka, 560-8531, Japan
| | - Yuji Nishii
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University Suita, Osaka, 565-0871, Japan
| | - Haruki Nagae
- Department of Chemistry, Graduate School of Engineering Science, Osaka University Toyonaka, Osaka, 560-8531, Japan
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Nayan Sharma K, Joshi H, Prakash O, Sharma AK, Bhaskar R, Singh AK. Pyrazole-Stabilized Dinuclear Palladium(II) Chalcogenolates Formed by Oxidative Addition of Bis[2-(4-bromopyrazol-1-yl)ethyl] Dichalcogenides to Palladium(II) - Tailoring of Pd-S/Se Nanoparticles. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500529] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sap A, Absillis G, Parac-Vogt TN. Selective hydrolysis of oxidized insulin chain B by a Zr(IV)-substituted Wells-Dawson polyoxometalate. Dalton Trans 2015; 44:1539-48. [PMID: 25216342 DOI: 10.1039/c4dt01477d] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report for the first time on the selective hydrolysis of a polypeptide system by a metal-substituted polyoxometalate (POM). Oxidized insulin chain B, a 30 amino acid polypeptide, was selectively cleaved by the Zr(IV)-substituted Wells-Dawson POM, K15H[Zr(α2-P2W17O61)2]·25H2O, under physiological pH and temperature conditions in aqueous solution. HPLC-ESI-MS, LC-MS/MS, MALDI-TOF and MALDI-TOF MS/MS data indicate hydrolysis at the Phe1-Val2, Gln4-His5, Leu6-Cys(SO3H)7, and Gly8-Ser9 peptide bonds. The rate of oxidized insulin chain B hydrolysis (0.45 h(-1) at pH 7.0 and 60 °C) was calculated by fitting the integration values of its HPLC-UV signal to a first-order exponential decay function. (1)H NMR measurements show significant line broadening and shifting of the polypeptide resonances upon addition of the Zr(IV)-POM, indicating that interaction between the Zr(IV)-POM and the polypeptide takes place in solution. Circular dichroism (CD) measurements clearly prove that the flexible unfolded nature of the polypeptide was retained in the presence of the Zr(IV)-POM. The thermal stability of the Zr(IV)-POM in the presence of the polypeptide chain during the hydrolytic reaction was confirmed by (31)P NMR spectroscopy. Despite the highly negative charge of the Zr(IV)-POM, the mechanism of interaction appears to be dominated by a strong metal-directed binding between the positively charged Zr(IV) center and negatively charged amino acid side chains.
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Affiliation(s)
- Annelies Sap
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Heverlee, Belgium.
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5
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Abstract
Site-selective peptide/protein degradation through chemical cleavage methods is an important modification of biologically relevant macromolecules which complements enzymatic hydrolysis. In this review, recent progress in chemical, site-selective peptide bond cleavage is overviewed, with an emphasis on postulated mechanisms and their implications on reactivity, selectivity, and substrate scope.
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Tanabe K, Taniguchi A, Matsumoto T, Oisaki K, Sohma Y, Kanai M. Asparagine-selective cleavage of peptide bonds through hypervalent iodine-mediated Hofmann rearrangement in neutral aqueous solution. Chem Sci 2014. [DOI: 10.1039/c3sc53037j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Rajković S, Ašanin DP, Živković MD, Djuran MI. Synthesis of different pyrazine-bridged platinum(II) complexes and 1H NMR study of their catalytic abilities in the hydrolysis of the N-acetylated l-methionylglycine. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.08.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Prakash J, Kodanko JJ. Metal-based methods for protein inactivation. Curr Opin Chem Biol 2013; 17:197-203. [DOI: 10.1016/j.cbpa.2012.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/29/2012] [Accepted: 12/07/2012] [Indexed: 01/16/2023]
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9
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Crystallographic evidence of anion⋯π interactions in the pyrazine bridged {[Pt(en)Cl]2(μ-pz)}Cl2 complex and a comparative study of the catalytic ability of mononuclear and binuclear platinum(II) complexes in the hydrolysis of N-acetylated l-methionylglycine. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.12.037] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Zheng AX, Ren ZG, Wang HF, Li HX, Lang JP. Reactions of palladium dichloride with 4-(trimethylammonio)benzenethiolate and phosphine ligands. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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McLaughlin MP, Darrah TH, Holland PL. Palladium(II) and platinum(II) bind strongly to an engineered blue copper protein. Inorg Chem 2011; 50:11294-6. [PMID: 22026434 DOI: 10.1021/ic2017648] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Studies of palladium(II) and platinum(II) binding to well-characterized proteins contribute to understanding the influence of these metals in the environment and body. The well-characterized apoprotein of azurin has a soft-metal binding site that may be exposed to solvent by mutation of a coordinating His-117 residue to glycine (H117G). Palladium(II) and platinum(II) form strong 1:1 adducts with the apo form of H117G azurin. A combination of UV-vis, circular dichroism, and inductively coupled plasma mass spectrometry techniques suggests that the metal binds specifically at His-46 and Cys-112 of the protein.
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Affiliation(s)
- Matthew P McLaughlin
- Department of Chemistry, University of Rochester, Rochester, New York 14618, United States
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12
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Prakash J, Kodanko JJ. Selective Inactivation of Serine Proteases by Nonheme Iron Complexes. Inorg Chem 2011; 50:3934-45. [DOI: 10.1021/ic102320j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jai Prakash
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Jeremy J. Kodanko
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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Luo XM, He WJ, Zhang Y, Guo ZJ, Zhu LG. Metal compound-mediated hydrolytic cleavage of oxidized insulin B chain: Regioselectivity and influence of peptide secondary structure. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20000180611] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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Jin C, Zhang L, Hong J, Yang GS, Zhu LG. Structure of AcMet-Gly and its interaction with palladium(II) tetraaqua complex studied by electrospray mass spectrometry and density functional theory. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20040220609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Yeguas V, Campomanes P, López R, Díaz N, Suárez D. Understanding Regioselective Cleavage in Peptide Hydrolysis by a Palladium(II) Aqua Complex: A Theoretical Point of View. J Phys Chem B 2010; 114:8525-35. [DOI: 10.1021/jp101870j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Violeta Yeguas
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Pablo Campomanes
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Ramón López
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Natalia Díaz
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Dimas Suárez
- Departamento de Química Física y Analítica, Universidad de Oviedo, C/Julián Clavería, 8, 33006 Oviedo, Spain, and Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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16
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Nayek HP, Hilt G, Dehnen S. Synthesis, Structure and Electrochemical Properties of a Ferrocene-Bridged Bis[tris(arylselenolato)stannyl] Compound. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900664] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Misumi Y, Seino H, Mizobe Y. A series of thiolato-bridged di- and trinuclear complexes derived from [Tp∗Rh(SPh)2(MeCN)] (Tp∗=hydrotris(3,5-dimethylpyrazol-1-yl)borate). Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.04.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Unexpected formation of [Pd(bedp)][Pd2Cl4(μ-SMe)2] (bedp = 1,4-bis[2-(3,5-dimethyl-1-pyrazolyl)ethyl]piperazine). Structural characterisation and spectroscopic properties. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.02.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Nayek HP, Niedermeyer H, Dehnen S. Synthesis and properties of the tetranuclear palladium chalcogenolato-acetato complex [Pd(SePh)(OOCCH3)]4 with Pd–Pd bonding: an experimental and theoretical study. Dalton Trans 2009:4208-12. [DOI: 10.1039/b901126a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Rivera G, Bernès S, Torrens H. Mono- and bimetallic platinum(II) and palladium(II) complexes containing fluorinated benzothiolates. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.05.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Misumi Y, Seino H, Mizobe Y. Addition of benzenethiol to terminal alkynes catalyzed by hydrotris(3,5-dimethylpyrazolyl)borate–Rh(III) bis(thiolate) complex: Mechanistic studies with characterization of the key intermediate. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.03.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Yang G, Tang H, Li Y, Hong J, Guo Z, Zhu L. Syntheses, structures, and properties of two dinuclear palladium (II) complexes of a single macrocyclic hexaaza ligand with two hydroxyethyl pendants. INORG CHEM COMMUN 2005. [DOI: 10.1016/j.inoche.2005.06.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Yang G, Miao R, Li Y, Hong J, Zhao C, Guo Z, Zhu L. Synergic effect of two metal centers in catalytic hydrolysis of methionine-containing peptides promoted by dinuclear palladium(ii) hexaazacyclooctadecane complex. Dalton Trans 2005:1613-9. [PMID: 15852110 DOI: 10.1039/b500210a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The species obtained by the reaction of [Pd2([18]aneN6)Cl2](ClO4)2(where [18]aneN6 is 1,4,7,10,13,16-hexaazacyclooctadecane) with AgBF4 have been determined by electrospray ionization mass spectrometry (ESI-MS) to be an equilibrium mixture of three major types of dinuclear Pd(II) complex cations, [Pd2(mu-O)([18]aneN6)]2+, [Pd2(mu-OH)([18]aneN6)]3+ and [Pd2(H2O)(OH)([18]aneN6)](3+), in aqueous solution. The hydroxo-group-bridged one, [Pd2(mu-OH)([18]aneN6)]3+, is a dominant species, whose crystal structure has been obtained. The crystal structure of [Pd2(mu-OH)([18]aneN6)](ClO4)3 shows that each Pd(II) ion in the dinuclear complex is tetra-coordinated by three nitrogen atoms and one hydroxo group bridge in a distorted square configuration. The two Pd(II) ions are 3.09 A apart from each other. The dinuclear Pd(II) complex cations [Pd2(mu-OH)([18]aneN6)]3+ and [Pd2(H2O)(OH)([18]aneN6)]3+ can efficiently catalyze hydrolysis of the amide bond involving the carbonyl group of methionine in methionine-containing peptides with turnover number of larger than 20. In these hydrolytic reactions, the two Pd(II) ions are synergic; one Pd(II) ion anchors to the side chain of methionine and the other one delivers hydroxo group or aqua ligand to carbonyl carbon of methionine, or acts as a Lewis acid to activate the carbonyl group of methionine, resulting in cleavage of Met-X bond. The binding constant of dinuclear Pd(II) complex cations with AcMet-Gly and AcMet were determined by 1H NMR titration to be 282 +/- 2 M(-1) and 366 +/- 4 M(-1), respectively. The relatively low binding constants enable the catalytic cycle and the possible catalytic mechanism is proposed. This is the first artificial mimic of metallopeptidases with two metal active centers.
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Affiliation(s)
- Gaosheng Yang
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing 210093, P. R. China
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Sun X, Jin C, Mei Y, Yang G, Guo Z, Zhu L. Interaction of Palladium(II) and Platinum(II) Complexes with Microperoxidase-11 Studied by Electrospray Mass Spectrometry and MS/MS Analysis. Inorg Chem 2003; 43:290-6. [PMID: 14704079 DOI: 10.1021/ic034491a] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Interactions of cis-[Pd(en)(H(2)O)(2)](2+) (en, ethylenediamine) and cis-[Pt(NH(3))(2)(H(2)O)(2)](2+) with microperoxidase-11 (MP-11) in a molar ratio of 1:1 or 2:1 at pH 1.4 were investigated via electrospray mass spectrometry and MS/MS analysis at room temperature and at 40 degrees C with an incubation time of 2 or 3 days. The composition of the Pd(II)- and Pt(II)-anchored MP-11 was confirmed on the basis of the precise molecular mass and the simulated isotope distribution pattern. MS/MS analysis revealed that the Pd(II) center anchored to the side chain of Cys7 as Pd(II) and MP-11 were mixed in an equimolar ratio and to side chains of Cys7 and Cys4 as Pd(II) and MP-11 mixed in a 2:1 molar ratio. When Pt(II) and MP-11 were mixed in a 2:1 molar ratio, Pt(II) first anchored to the side chain of Cys7, and then to the side chain of Cys4 with time. The initial coordination of Pd(II) and Pt(II) to the side chain of Cys7 is the essential step for the Pd(II)- and Pt(II)-promoted cleavage of the His8-Thr9 bond in MP-11. These results support the hypothesis that the Pd(II)-mediated cleavage of the His18-Thr19 bond in cytochorome c is due to the identical binding mode.
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Affiliation(s)
- Xiaojuan Sun
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing 210093, China
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Anbalagan V, Van Stipdonk MJ. Gas-phase investigation of Pd(II)-alanine complexes with small native and derivatized peptides containing histidine. JOURNAL OF MASS SPECTROMETRY : JMS 2003; 38:982-989. [PMID: 14505326 DOI: 10.1002/jms.512] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We report here the generation of gas-phase complexes containing Pd(II), a ligand (deprotonated alanine, A-), and/or N-terminus derivatized peptides containing histidine as one of the amino acids. The species were produced by electrospray ionization, and their gas-phase reactions were investigated using ion-trap tandem mass spectrometry. Pd(II) forms a stable diaqua complex in the gas phase of the formula, [Pd(A-) (H(2)O)(2)]+, (where A- = deprotonated alanine) along with ternary complexes containing A- and peptide. The collision-induced dissociation (CID) patterns of the binary and ternary complexes were investigated, and the dissociation patterns for the ternary complexes suggest that: (a) the imidazole ring of the histidine side group may be the intrinsic binding site of the metal ion, and (b) the peptides fragment primarily by cleavage of the amide bond to the C-terminal side of the histidine residues. These observations are in accord with previous solution-state studies in which Pd(II) was shown to cause hydrolysis of an amide bond of a peptide at the same position.
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Affiliation(s)
- V Anbalagan
- Department of Chemistry, Wichita State University, 1845 N. Fairmount, Wichita, KS 67260-0051, USA.
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Zhang L, Mei Y, Zhang Y, Li S, Sun X, Zhu L. Regioselective cleavage of myoglobin with copper(II) compounds at neutral pH. Inorg Chem 2003; 42:492-8. [PMID: 12693231 DOI: 10.1021/ic025619b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Selective hydrolytic cleavage of myoglobin was studied with CuCl2, Cu(ClO4)2, Cu(AC)2, and binuclear Cu(II) complexes of 3,6,9,16,19,22-hexaaza-6,19-bis (2-hydroxyethyl)-tricyclo- [22,2,2,2(11,14)]-triaconta-1,11,13,24,27,29-hexaene (1) and 3,6,9,16,19,22-hexaaza-tricyclo-[22,2,2,2(11,14)]-triaconta- 1,11,13,24,27,29-hexaene (2). The sites of cleavage were precisely determined by LC-ESIMS and further confirmed by an MS/MS method through fragmentation from both the N-terminal and C-terminal. The peptide bonds of Gln91-Ser92 and Ala94-Thr95 were remarkably cleaved by Cu(II) anchored to the side chain of the His93 residue. The data presented in this study show that Cu(II)-mediated cleavage of myoglobin is able to proceed at neutral pH, more selectively than Pd(II)-mediated cleavage, and buffer solution of phosphate and NH4HCO3 accelerates the cleavage reaction.
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Affiliation(s)
- Lin Zhang
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing, 210093, China
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Milović NM, Kostić NM. Palladium(II) complex as a sequence-specific peptidase: hydrolytic cleavage under mild conditions of X-Pro peptide bonds in X-Pro-Met and X-Pro-His segments. J Am Chem Soc 2003; 125:781-8. [PMID: 12526679 DOI: 10.1021/ja027408b] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The X-Pro peptide bond (in which X represents any amino acid residue) in peptides and proteins is resistant to cleavage by most proteolytic enzymes. We show that [Pd(H(2)O)(4)](2+) ion can selectively hydrolyze this tertiary peptide bond within the X-Pro-Met and X-Pro-His sequence segments. The hydrolysis requires an equimolar amount of the Pd(II) reagent and occurs under mild conditions-at temperature as low as 20 degrees C (with half-life of 1.0 h at pH 2.0) and at pH as high as 7.0 (with half-life of 4.2 h at pH 7.0 and 40 degrees C). The secondary peptide bond, exemplified by X-Gly in the X-Gly-Met and X-Gly-His sequence segments, however, is cleaved only in weakly acidic solution (pH < 4.0) and more slowly (half-life is 4.2 h at pH 2.0 and 60 degrees C). We explain the sequence-specificity of X-Pro cleavage by NMR spectroscopic analysis of the coordination of the X-Pro-Met segment to the Pd(II) ion. We give indirect evidence for the mechanism of cleavage by analyzing the conformation of the scissile X-Pro peptide bond, and by comparing the rate constants for the cleavage of the tertiary X-Pro peptide bond, the tertiary X-Sar peptide bond (Sar is N-methyl glycine), and the typical secondary X-Gly peptide bond in a set of analogous oligopeptides. Methionine and histidine side chains provide the recognition by selectively binding (anchoring) the Pd(II) ion. The proline residue provides the enhanced activity because its tertiary X-Pro peptide bond favors the cleavage-enhancing binding of the Pd(II) ion to the peptide oxygen atom and prevents the cleavage-inhibiting binding of the Pd(II) ion upstream of the anchoring (histidine or methionine) residue. Cleavage can be switched from the residue-selective to the sequence-specific mode by simply adjusting the pH of the aqueous solution. In acidic solutions, any X-Y bond in X-Y-Met and X-Y-His segments is cleaved because the cleavage is directed by anchoring methionine and histidine residues. In mildly acidic and neutral solutions, only the X-Pro bond in X-Pro-Met and X-Pro-His sequences is cleaved because of an interplay between the anchoring residue and the proline residue preceding it. Because Pro-Met and Pro-His sequences are rare in proteins, this sequence-specific cleavage is potentially useful for the removal of the fusion tags from the bioengineered fusion proteins.
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Affiliation(s)
- Nebojsa M Milović
- Department of Chemistry, Gilman Hall, Iowa State University, Ames 50011-3111, USA
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Milović NM, Kostić NM. Interplay of terminal amino group and coordinating side chains in directing regioselective cleavage of natural peptides and proteins with palladium(II) complexes. Inorg Chem 2002; 41:7053-63. [PMID: 12495344 DOI: 10.1021/ic025640c] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium(II) ions anchored to side chains of histidine and methionine residues in peptides and proteins in weakly acidic aqueous solutions promote hydrolytic cleavage of proximate amide bonds in the backbone. In this study, we determine how attachment of Pd(II) ions to histidine and methionine anchors and also to the terminal amino group in six natural peptides (chains A and B of insulin, segment 11-14 of angiotensinogen, pentagastrin, angiotensin II, and segment 3-8 of angiotensin II) and two proteins (ubiquitin and cytochrome c) affects regioselectivity and rate of backbone cleavage. These Pd(II)-promoted reactions follow a clear pattern of regioselectivity, directed by the anchoring side chains. When the Pd(II) reagent is nonspecifically anchored to the terminal amino group, the ligating site that is present in almost all proteins, the cleavage is fortunately absent. When the reagent is anchored to a residue in positions 1, 2, or 3, cleavage is absent, because the terminal amino group and deprotonated amide nitrogen atom(s) interposed between it and the anchor "lock" the Pd(II) ion in hydrolytically inactive chelate complexes. When the reagent is anchored to residues in positions beyond 3, the second amide bond upstream from the anchor is regioselectively cleaved in all cases when the anchor was "isolated," that is, flanked by noncoordinating side chains. Segment 3-8 of angiotensin II undergoes additional cleavage, which we explain by determining the rate constants for the cleavage, identifying the rate-limiting displacement of ethylenediamine ligand from the Pd(II) ion, and detecting several intermediates. Experiments with cytochrome c demonstrate that the number of cleavage sites can be controlled by adjusting the mole ratio of the Pd(II) reagent to the substrate. Our inorganic peptidases are useful for biochemical applications because their regioselectivity and reactivity set them apart from proteolytic enzymes and organic chemical reagents.
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Affiliation(s)
- Nebojsa M Milović
- Department of Chemistry, Gilman Hall, Iowa State University, Ames 50011-3111, USA
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Sequence-dependent cleavage of albumins with palladium(II) complexes: role of serine residue in controlling the high regioselectivity of protein cleavage. Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(02)00928-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Milović NM, Kostić NM. Palladium(II) complexes, as synthetic peptidases, regioselectively cleave the second peptide bond "upstream" from methionine and histidine side chains. J Am Chem Soc 2002; 124:4759-69. [PMID: 11971725 DOI: 10.1021/ja012366x] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium(II) complexes promote hydrolysis of natural and synthetic oligopeptides with unprecedented regioselectivity; the only cleavage site is the second peptide bond upstream from a methionine or a histidine side chain, that is, the bond involving the amino group of the residue that precedes this side chain. We investigate this regioselectivity with four N-acetylated peptides as substrates: neurotransmitter methionine enkephalin (Ac-Tyr-Gly-Gly-Phe-Met) and synthetic peptides termed Met-peptide (Ac-Ala-Lys-Tyr-Gly-Gly-Met-Ala-Ala-Arg-Ala), His-peptide (Ac-Val-Lys-Gly-Gly-His-Ala-Lys-Tyr-Gly-Gly-Met(OX)-Ala-Ala-Arg-Ala), in which a Met is oxidized to sulfone, and HisMet-peptide (Ac-Val-Lys-Gly-Gly-His-Ala-Lys-Tyr-Gly-Gly-Met-Ala-Ala-Arg-Ala). While maintaining protein-like properties, these substrates are suitable for quantitative study since their coordination to Pd(II) ion can be determined (by NMR spectroscopy), and the cleavage fragments can be separated (by HPLC methods) and identified (by MALDI mass spectrometry). The only peptide bonds cleaved were the Gly3-Phe4 bond in methionine enkephalin, Gly4-Gly5 bond in Met-peptide, Gly3-Gly4 in His-peptide, and Gly3-Gly4 and Gly9-Gly10 bonds in HisMet-peptide. We explain this consistent regioselectivity of cleavage by studying the modes of Met-peptide coordination to the Pd(II) ion in [Pd(H(2)O)(4)](2+) complex. In acidic solution, the rapid attachment of the Pd(II) complex to the methionine side chain is followed by the interaction of the Pd(II) ion with the peptide backbone upstream from the anchor. In the hydrolytically active complex, Met-peptide is coordinated to Pd(II) ion as a bidentate ligand - via sulfur atom in the methionine side chain and the first peptide nitrogen upstream from this anchor - so that the Pd(II) complex approaches the scissile peptide bond. Because the increased acidity favors this hydrolytically active complex, the rate of cleavage guided by either histidine or methionine anchor increased as pH was lowered from 4.5 to 0.5. The unwanted additional cleavage of the first peptide bond upstream from the anchor is suppressed if pH is kept above 1.2. Four Pd(II) complexes cleave Met-peptide with the same regioselectivity but at somewhat different rates. Complexes in which Pd(II) ion carries labile ligands, such as [Pd(H(2)O)(4)](2+) and [Pd(NH(3))(4)](2+), are more reactive than those containing anionic ligands, such as [PdCl(4)](2)(-), or a bidentate ligand, such as cis-[Pd(en)(H(2)O)(2)](2+). When both methionine and histidine residues are present in the same substrate, as in HisMet-peptide, 1 molar equivalent of the Pd(II) complex distributes itself evenly at both anchors and provides partial cleavage, whereas 2 molar equivalents of the promoter completely cleave the second peptide bond upstream from each of the anchors. The results of this study bode well for growing use of palladium(II) reagents in biochemical and bioanalytical practice.
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Affiliation(s)
- Nebojsa M Milović
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA
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Bóka B, Nagy Z, Várnagy K, Sóvágó I. Solution equilibria and structural characterisation of the palladium(II) and mixed metal complexes of peptides containing methionyl residues. J Inorg Biochem 2001; 83:77-89. [PMID: 11237266 DOI: 10.1016/s0162-0134(00)00196-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Palladium(II) complexes of the peptides GlyMet, GlyMetGly and GlyGlyMet containing methionyl residues were studied by potentiometric and 1H NMR spectroscopic methods. The coordination of terminal amino and deprotonated amide nitrogen and thioether sulfur donor atoms was suggested in the mono complexes of GlyMet and GlyMetGly. The fourth coordination site of these complexes can be occupied by solvent molecule, chloride or hydroxide ions or by another ligand molecule in the bis or mixed ligand complexes. The second ligand coordinates monodentately via the thioether function in acidic media and the amino group under neutral or basic conditions. The stoichiometry of the major species formed in the palladium(II)-GlyGlyMet system is [PdH(-2) L]- and this is coordinated by the amino, two-amide and the thioether donor functions. Thioether bridged mixed metal complexes formed in the reaction of [Pd(dien)]2+ and [Cu(GlyMetH(-1))] or [Ni(GlyMetGlyH(-2))]- also have been detected by spectroscopic techniques.
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Affiliation(s)
- B Bóka
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Hungary
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Kaminskaia NV, Ullmann GM, Fulton DB, Kostic NM. Spectroscopic, kinetic, and mechanistic study of a new mode of coordination of indole derivatives to platinum(II) and palladium(II) ions in complexes. Inorg Chem 2000; 39:5004-13. [PMID: 11233196 DOI: 10.1021/ic000254l] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Binding of tryptophan residue to intrinsic metal ions in proteins is unknown, and very little is known about the coordinating abilities of indole. Indole-3-acetamide displaces the solvent ligands from cis-[Pt(en)(sol)2]2+, in which sol is acetone or H2O, in acetone solution and forms the complex cis-[Pt(en)(indole-3-acetamide)]2+ (3) of spiro structure, in which the new bidentate ligand coordinates to the Pt(II) atom via the C(3) atom of the indolyl group and the amide oxygen atom. This structure is supported by 1H, 13C, 15N, and 195Pt NMR spectra and by UV, IR, and mass spectra. Molecular mechanical simulations by Hyperchem and CHARMM methods give consistent structural models; the latter is optimized by density-functional quantum chemical calculations. Dipeptide-like molecules N-(3-indolylacetyl)-L-amino acid in which amino acid is alanine, leucine, isoleucine, valine, aspartic acid, or phenylalanine also displace the solvent ligands in acetone solution and form complexes cis-[Pt(en) N-(3-indolylacetyl)-L-amino acid)]2+ (6), which structurally resemble 3 but exist as two diastereomers, detected by 1H NMR spectroscopy. The bulkier the amino acid moiety, the slower the coordination of these dipeptide-like ligands to the Pt(II) atom. The indolyl group does not coordinate as a unidentate ligand; a second donor atom is necessary for bidentate coordination of this atom and the indolyl C(3) atom. The solvent-displacement reaction is of first and zeroth orders with respect to indole-3-acetamide and cis-[Pt(en)(sol)2]2+, respectively. A mechanism consisting of initial unidentate coordination of the ligand via the amide oxygen atom followed by closing of the spiro ring is supported by 1H NMR data, the kinetic effects of acid and water, and the activation parameters for the displacement reaction. In the case of N-(3-indolylacetyl)-L-phenylalanine, the bulkiest of the entering ligands, the reaction is of first order with respect to both reactants. The bidentate indole-3-acetamide ligand in 3 is readily displaced by (CH3)2SO and 2-methylimidazole, but not by CNO-, CH3COO-, and CH3CN. Complexes cis-[Pd(en)(sol)2]2+ and cis-[Pd(dtco)(sol)2]2+ react with indole-3-acetamide more rapidly than their Pt(II) analogues do and yield complexes similar to 3. This study augments our recent discovery of selective, hydrolytic cleavage of tryptophan-containing peptides by Pd(II) and Pt(II) complexes.
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Affiliation(s)
- N V Kaminskaia
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge 02139, USA
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Luo X, He W, Zhang Y, Guo Z, Zhu L. Pd(II) Complexes Mediated Hydrolytic Cleavage of Insulin B Chain: Regioselectivity and Influence of Peptide Secondary Structure. CHEM LETT 2000. [DOI: 10.1246/cl.2000.1030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kawaguchi S, Kajikawa T, Kaneko M, Koshimizu T, Araki K. Formation of Lanthanide Complexes with Bipyridine-Functionalized Amide Compounds and Their Unusually High Amide Reactivity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1999. [DOI: 10.1246/bcsj.72.2729] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kaminskaia NV, Johnson TW, Kostić NM. Regioselective Hydrolysis of Tryptophan-Containing Peptides Promoted by Palladium(II) Complexes. J Am Chem Soc 1999. [DOI: 10.1021/ja9840246] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - T. Wade Johnson
- Department of Chemistry, Iowa State University Ames, Iowa 50011-3111
| | - Nenad M. Kostić
- Department of Chemistry, Iowa State University Ames, Iowa 50011-3111
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Molenveld P, Stikvoort WMG, Kooijman H, Spek AL, Engbersen JFJ, Reinhoudt DN. Dinuclear and Trinuclear Zn(II) Calix[4]arene Complexes as Models for Hydrolytic Metallo-Enzymes. Synthesis and Catalytic Activity in Phosphate Diester Transesterification. J Org Chem 1999. [DOI: 10.1021/jo982201f] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter Molenveld
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Wendy M. G. Stikvoort
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Huub Kooijman
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Anthony L. Spek
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Johan F. J. Engbersen
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - David N. Reinhoudt
- Laboratory of Supramolecular Chemistry and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands, and the Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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Parac TN, Ullmann GM, Kostić NM. New Regioselectivity in the Cleavage of Histidine-Containing Peptides by Palladium(II) Complexes Studied by Kinetic Experiments and Molecular Dynamics Simulations. J Am Chem Soc 1999. [DOI: 10.1021/ja982369i] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tatjana N. Parac
- Contribution from the Department of Chemistry, Iowa State University, Ames, Iowa 50011, and Freie Universität Berlin, Institute für Kristallographie, Takustrasse 6, 14195 Berlin, Germany
| | - G. Matthias Ullmann
- Contribution from the Department of Chemistry, Iowa State University, Ames, Iowa 50011, and Freie Universität Berlin, Institute für Kristallographie, Takustrasse 6, 14195 Berlin, Germany
| | - Nenad M. Kostić
- Contribution from the Department of Chemistry, Iowa State University, Ames, Iowa 50011, and Freie Universität Berlin, Institute für Kristallographie, Takustrasse 6, 14195 Berlin, Germany
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