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Ahmad R, Tyryshkin AM, Xie L, Hansen WA, Yachnin BJ, Emge TJ, Mashrai A, Khare SD, Knapp S. A Bis(imidazole)-based cysteine labeling tool for metalloprotein assembly. J Inorg Biochem 2023; 244:112206. [PMID: 37030124 DOI: 10.1016/j.jinorgbio.2023.112206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 03/24/2023] [Accepted: 03/31/2023] [Indexed: 04/03/2023]
Abstract
Precise metal-protein coordination by design remains a considerable challenge. Polydentate, high-metal-affinity protein modifications, both chemical and recombinant, can enable metal localization. However, these constructs are often bulky, conformationally and stereochemically ill-defined, or coordinately saturated. Here, we expand the biomolecular metal-coordination toolbox with the irreversible attachment to cysteine of bis(1-methylimidazol-2-yl)ethene ("BMIE"), which generates a compact imidazole-based metal-coordinating ligand. Conjugate additions of small-molecule thiols (thiocresol and N-Boc-Cys) with BMIE confirm general thiol reactivity. The BMIE adducts are shown to complex the divalent metal ions Cu++ and Zn++ in bidentate (N2) and tridentate (N2S*) coordination geometries. Cysteine-targeted BMIE modification (>90% yield at pH 8.0) of a model protein, the S203C variant of carboxypeptidase G2 (CPG2), measured with ESI-MS, confirms its utility as a site-selective bioconjugation method. ICP-MS analysis confirms mono-metallation of the BMIE-modified CPG2 protein with Zn++, Cu++, and Co++. EPR characterization of the BMIE-modified CPG2 protein reveals the structural details of the site selective 1:1 BMIE-Cu++ coordination and symmetric tetragonal geometry under physiological conditions and in the presence of various competing and exchangeable ligands (H2O/HO-, tris, and phenanthroline). An X-ray protein crystal structure of BMIE-modified CPG2-S203C demonstrates that the BMIE modification is minimally disruptive to the overall protein structure, including the carboxypeptidase active sites, although Zn++ metalation could not be conclusively discerned at the resolution obtained. The carboxypeptidase catalytic activity of BMIE-modified CPG2-S203C was also assayed and found to be minimally affected. These features, combined with ease of attachment, define the new BMIE-based ligation as a versatile metalloprotein design tool, and enable future catalytic and structural applications.
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Affiliation(s)
- Raheel Ahmad
- Department of Chemistry & Chemical Biology, Rutgers The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, United States of America
| | - Alexei M Tyryshkin
- Department of Marine and Coastal Sciences, Rutgers The State University of New Jersey, 71 Dudley Road, New Brunswick, NJ 08901, United States of America
| | - Lingjun Xie
- Department of Chemistry & Chemical Biology, Rutgers The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, United States of America
| | - William A Hansen
- Department of Chemistry & Chemical Biology, Rutgers The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, United States of America; Rutgers Center for Integrative Proteomics Research, 174 Frelinghuysen Rd, Piscataway, NJ 08854, United States of America
| | - Brahm J Yachnin
- Department of Chemistry & Chemical Biology, Rutgers The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, United States of America; Rutgers Center for Integrative Proteomics Research, 174 Frelinghuysen Rd, Piscataway, NJ 08854, United States of America
| | - Thomas J Emge
- Department of Chemistry & Chemical Biology, Rutgers The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, United States of America
| | - Ashraf Mashrai
- Department of Chemistry & Chemical Biology, Rutgers The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, United States of America; Rutgers Center for Integrative Proteomics Research, 174 Frelinghuysen Rd, Piscataway, NJ 08854, United States of America
| | - Sagar D Khare
- Department of Chemistry & Chemical Biology, Rutgers The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, United States of America; Rutgers Center for Integrative Proteomics Research, 174 Frelinghuysen Rd, Piscataway, NJ 08854, United States of America
| | - Spencer Knapp
- Department of Chemistry & Chemical Biology, Rutgers The State University of New Jersey, 123 Bevier Rd, Piscataway, NJ 08854, United States of America.
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Kim D, Han J, Jung OS, Lee YA. Insight into systematic formation of hexafluorosilicate during crystallization via self-assembly in a glass vessel. RSC Adv 2022; 12:25118-25122. [PMID: 36199348 PMCID: PMC9443674 DOI: 10.1039/d2ra04270c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/29/2022] [Indexed: 11/27/2022] Open
Abstract
Formation of the unexpected hexafluorosilicate (SiF62−) anion during crystallization via self-assembly in glassware is scrutinized. Self-assembly of M(BF4)2 (M2+ = Cu2+ and Zn2+) with tridentate N-donors (L) in a mixture solvent including methanol in a glass vessel gives rise to an SiF62−-encapsulated Cu3L4 double-decker cage and a Zn2L4 cage, respectively. Induced reaction of CuX2 (X− = PF6− and SbF6−) instead of Cu(BF4)2, with the tridentate ligands, produces the same species. The formation time of SiF62− is in the order of anions BF4− < PF6− < SbF6− under the given reaction conditions. The SiF62− anion, acting as a cage template or cage-to-cage bridge, seems to be formed from the reaction of polyatomic anions containing fluoride with the SiO2 of the surface of the glass vessel. Formation of the unexpected hexafluorosilicate (SiF62−) encapsulated cages constructed. Interestingly, this shows that the surface of glassware should be given serious consideration for long-duration reactions with active F-containing species.![]()
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Affiliation(s)
- Dongwon Kim
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
| | - Jihun Han
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
| | - Ok-Sang Jung
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
| | - Young-A. Lee
- Department of Chemistry, Jeonbuk National University, Jeonju 54896, Korea
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Lago AB, Pino-Cuevas A, Carballo R, Vázquez-López EM. Effect of N-salicylidene hydrazide protonation on the solid state structural diversity of its Cu( ii), Ni( ii) and Zn( ii) complexes. CrystEngComm 2021. [DOI: 10.1039/d0ce01204a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Study of the effect of ligand protonation on the structural diversity of Cu(ii), Ni(ii) and Zn(ii) compounds constructed from a N-salicylidenehydrazide Ligand.
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Affiliation(s)
- Ana Belén Lago
- Departamento de Química Inorgánica
- Instituto de Investigación Sanitaria Galicia Sur (IISGS)-Universidade de Vigo
- 36310 Vigo
- Spain
- Departamento de Química
| | - Arantxa Pino-Cuevas
- Departamento de Química Inorgánica
- Instituto de Investigación Sanitaria Galicia Sur (IISGS)-Universidade de Vigo
- 36310 Vigo
- Spain
| | - Rosa Carballo
- Departamento de Química Inorgánica
- Instituto de Investigación Sanitaria Galicia Sur (IISGS)-Universidade de Vigo
- 36310 Vigo
- Spain
| | - Ezequiel M. Vázquez-López
- Departamento de Química Inorgánica
- Instituto de Investigación Sanitaria Galicia Sur (IISGS)-Universidade de Vigo
- 36310 Vigo
- Spain
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Gopalakrishnan M, Krittametaporn N, Yoshinari N, Konno T, Sangtrirutnugul P. Anion-templated assembly of multinuclear copper( ii)–triazole complexes. NEW J CHEM 2020. [DOI: 10.1039/d0nj02832k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Anions were used as templates to construct copper(ii) clusters with different architectures.
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Affiliation(s)
- Mohan Gopalakrishnan
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok
| | - Nuttaporn Krittametaporn
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok
| | - Nobuto Yoshinari
- Department of Chemistry
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Takumi Konno
- Department of Chemistry
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Preeyanuch Sangtrirutnugul
- Center of Excellence for Innovation in Chemistry (PERCH-CIC)
- Department of Chemistry
- Faculty of Science
- Mahidol University
- Bangkok
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Zhou SB, Wang XF, Du CC, Wang DZ, Jia D. A series of new mixed-ligand complexes based on 3,6-bis(imidazol-1-yl)pyridazine: syntheses, structures, and catalytic activities. CrystEngComm 2017. [DOI: 10.1039/c7ce00394c] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Wang DZ, Fan JZ, Jia D, Du CC. Zinc and cadmium complexes based on bis-(1H-tetrazol-5-ylmethyl/ylethyl)-amine ligands: structures and photoluminescence properties. CrystEngComm 2016. [DOI: 10.1039/c6ce01311b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nine zinc and cadmium coordination compounds with bis-(1H-tetrazol-5-ylmethyl/ylethyl)-amine were synthesized and structurally characterized, and the fluorescent emission and fluorescence lifetime of complexes 1–9 have been investigated and discussed.
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Affiliation(s)
- Duo-Zhi Wang
- Key Laboratory of Energy Materials Chemistry
- Ministry of Education
- Institute of Applied Chemistry
- Xinjiang University
- Urumqi, PR China
| | - Jian-Zhong Fan
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi 830046, PR China
| | - Dianzeng Jia
- Key Laboratory of Energy Materials Chemistry
- Ministry of Education
- Institute of Applied Chemistry
- Xinjiang University
- Urumqi, PR China
| | - Ceng-Ceng Du
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi 830046, PR China
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8
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Rodríguez-Hermida S, Lago AB, Pino-Cuevas A, Hagenbach A, Cañadillas-Delgado L, Carballo R, Abram U, Vázquez-López EM. A Hexameric Cationic Copper(II) Metallacrown as a Pertechnetate and Perrhenate Scavenger. Chemistry 2015; 22:1847-53. [DOI: 10.1002/chem.201504315] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Sabina Rodríguez-Hermida
- Departamento de Química Inorgánica; Facultade de Química; Instituto de Investigación Biomédica - Universidade; 36310 Vigo Galicia Spain
- Catalan Institute of Nanoscience and Nanotechnology (ICN2); CSIC and The Barcelona Institute of Science and Technology; Campus UAB, Bellaterra 08193 Barcelona Spain
| | - Ana Belén Lago
- Departamento de Química Inorgánica; Facultade de Química; Instituto de Investigación Biomédica - Universidade; 36310 Vigo Galicia Spain
| | - Arantxa Pino-Cuevas
- Departamento de Química Inorgánica; Facultade de Química; Instituto de Investigación Biomédica - Universidade; 36310 Vigo Galicia Spain
| | - Adelheid Hagenbach
- Institut für Chemie und Biochemie; Freie Universität Berlin; Fabeckstrasse 34-36 14195 Berlin Germany
| | - Laura Cañadillas-Delgado
- Instituto de Ciencia de Materiales de Aragón; CSIC-Universidad de Zaragoza; 50009 Zaragoza Spain
| | - Rosa Carballo
- Departamento de Química Inorgánica; Facultade de Química; Instituto de Investigación Biomédica - Universidade; 36310 Vigo Galicia Spain
| | - Ulrich Abram
- Institut für Chemie und Biochemie; Freie Universität Berlin; Fabeckstrasse 34-36 14195 Berlin Germany
| | - Ezequiel M. Vázquez-López
- Departamento de Química Inorgánica; Facultade de Química; Instituto de Investigación Biomédica - Universidade; 36310 Vigo Galicia Spain
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Mu Y, Ran Y, Qin G, Ma X, Hao L, Wei Z, Niu Y, Lü H. Metal ions directed self-assembly based on rigid polycarboxylate ligand 5-tert-butyl isophthalic acid and flexible N-heterocyclic ligand 1,4-bis(2-methylimidazol-1-ylmethyl)-2,3,5,6-tetramethylbenzene. INORG CHEM COMMUN 2013. [DOI: 10.1016/j.inoche.2013.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Xie YP, Mak TCW. Silver(I) Ethynide Coordination Networks and Clusters Assembled with tert-Butylphosphonic Acid. Inorg Chem 2012; 51:8640-2. [DOI: 10.1021/ic300913u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yun-Peng Xie
- Department of Chemistry and Center of Novel
Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR,
People’s Republic of China
| | - Thomas C. W. Mak
- Department of Chemistry and Center of Novel
Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR,
People’s Republic of China
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