1
|
Tomczyk MD, Kuźnik N, Walczak K. Cyclen-based artificial nucleases: Three decades of development (1989–2022). Part a – Hydrolysis of phosphate esters. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
|
2
|
Hu Q, Jayasinghe‐Arachchige VM, Sharma G, Serafim LF, Paul TJ, Prabhakar R. Mechanisms of peptide and phosphoester hydrolysis catalyzed by two promiscuous metalloenzymes (insulin degrading enzyme and glycerophosphodiesterase) and their synthetic analogues. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2020. [DOI: 10.1002/wcms.1466] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Qiaoyu Hu
- Department of Chemistry, University of Miami Coral Gables Florida
| | | | - Gaurav Sharma
- Department of Chemistry, University of Miami Coral Gables Florida
| | | | - Thomas J. Paul
- Department of Chemistry, University of Miami Coral Gables Florida
| | - Rajeev Prabhakar
- Department of Chemistry, University of Miami Coral Gables Florida
| |
Collapse
|
3
|
Boltersdorf T, Ansari J, Senchenkova EY, Jiang L, White AJP, Coogan M, Gavins FNE, Long NJ. Development, characterisation and in vitro evaluation of lanthanide-based FPR2/ALX-targeted imaging probes. Dalton Trans 2019; 48:16764-16775. [PMID: 31674608 DOI: 10.1039/c9dt03520f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report the design, preparation and characterisation of three small-molecule, Formyl Peptide Receptor (FPR)-targeted lanthanide complexes (Tb·14, Eu·14 and Gd·14). Long-lived, metal-based emission was observed from the terbium complex (τH2O = 1.9 ms), whereas only negligible lanthanide signals were detected in the europium analogue. Ligand-centred emission was investigated using Gd·14 at room temperature and 77 K, leading to the postulation that metal emission may be sensitised via a ligand-based charge transfer state of the targeting Quin C1 unit. Comparatively high longitudinal relaxivity values (r1) for octadentate metal complexes of Gd·14 were determined (6.9 mM-1 s-1 at 400 MHz and 294 K), which could be a result of a relative increase in twisted square antiprism (TSAP) isomer prevalence compared to typical DOTA constructs (as evidenced by NMR spectroscopy). In vitro validation of concentration responses of Tb·14via three key neutrophil functional assays demonstrated that the inflammatory responses of neutrophils (i.e. chemotaxis, transmigration and granular release) remained unchanged in the presence of specific concentrations of the compound. Using a time-resolved microscopy set-up we were able to observe binding of the Tb·14 probe to stimulated human neutrophils around the cell periphery, while in the same experiment with un-activated neutrophils, no metal-based signals were detected. Our results demonstrate the utility of Tb·14 for time-resolved microscopy with lifetimes several orders of magnitude longer than autofluorescent signals and a preferential uptake in stimulated neutrophils.
Collapse
Affiliation(s)
- Tamara Boltersdorf
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City, London, W12 0BZ, UK.
| | | | | | | | | | | | | | | |
Collapse
|
4
|
Hu Q, Jayasinghe-Arachchige VM, Zuchniarz J, Prabhakar R. Effects of the Metal Ion on the Mechanism of Phosphodiester Hydrolysis Catalyzed by Metal-Cyclen Complexes. Front Chem 2019; 7:195. [PMID: 31024887 PMCID: PMC6460053 DOI: 10.3389/fchem.2019.00195] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/14/2019] [Indexed: 12/01/2022] Open
Abstract
In this study, mechanisms of phosphodiester hydrolysis catalyzed by six di- and tetravalent metal-cyclen (M-C) complexes (Zn-C, Cu-C, Co-C, Ce-C, Zr-C and Ti-C) have been investigated using DFT calculations. The activities of these complexes were studied using three distinct mechanisms: (1) direct attack ( DA ), (2) catalyst-assisted ( CA ), and (3) water-assisted ( WA ). All divalent metal complexes (Zn-C, Cu-C and Co-C) coordinated to the BNPP substrate in a monodentate fashion and activated its scissile phosphoester bond. However, all tetravalent metal complexes (Ce-C, Zr-C, and Ti-C) interacted with BNPP in a bidentate manner and strengthened this bond. The DA mechanism was energetically the most feasible for all divalent M-C complexes, while the WA mechanism was favored by the tetravalent complexes, except Ce-C. The divalent complexes were found to be more reactive than their tetravalent counterparts. Zn-C catalyzed the hydrolysis with the lowest barrier among all M-C complexes, while Ti-C was the most reactive tetravalent complex. The activities of Ce-C and Zr-C, except Ti-C, were improved with an increase in the coordination number of the metal ion. The structural and mechanistic information provided in this study will be very helpful in the development of more efficient metal complexes for this critical reaction.
Collapse
Affiliation(s)
| | | | | | - Rajeev Prabhakar
- Department of Chemistry, University of Miami, Coral Gables, FL, United States
| |
Collapse
|
5
|
Prandina A, Radix S, Le Borgne M, Jordheim LP, Bousfiha Z, Fröhlich C, Leiros HKS, Samuelsen Ø, Frøvold E, Rongved P, Åstrand OAH. Synthesis and biological evaluation of new dipicolylamine zinc chelators as metallo-β-lactamase inhibitors. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
6
|
|
7
|
Jiang B, Cai S, Xie J, Feng FM. Nuclease Activity of Diaza-Crown Ether Complexes of Cerium(III) with Different Functional Groups as Side Arms. PROGRESS IN REACTION KINETICS AND MECHANISM 2018. [DOI: 10.3184/146867818x15161889114448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cerium(III) complexes of two ligands of a diaza-crown ether with different functional groups as side arms were synthesised and characterised. The catalytic ability of the cerium(III) complexes for pUC19 DNA cleavage was investigated and compared using agarose gel electrophoresis. The results indicate that the catalytic activity of the complex CeL2 [L2 = 2,2′- (1,4,10,13-tetraoxa-7,16-diazacyclooctadecane-7,16-diyl) diacetamide] with two carbamoylmethyl groups is significantly higher than the complex CeL1 [L1 = 2,2′- (1,4,10,13-tetraoxa-7,16-diazacyclooctadecane-7,16-diyl) diethanol] with two hydroxyethyl groups under the same conditions. The optimum catalytic concentrations of CeL1 and CeL2 were 7.69 × 10−5 and 3.08 × 10−5 mol L−1 respectively and excessively high concentrations of the complexes can reduce their catalytic efficiency due to the formation of inactive μ-hydroxo dimers. The optimum catalytic acidities of CeL1 and CeL2 were pH 7.0 and 7.5 respectively and excessively high pH of the reaction system can reduce the catalytic efficiency of the complexes due to the formation of cerium(III) hydroxide. DNA cleavage promoted by the two complexes takes place via the same hydrolytic pathway and so the activity difference of the two complexes is attributed to the stability of the complexes, rather than the catalytic mechanism.
Collapse
Affiliation(s)
- Bingying Jiang
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, P.R. China
| | - Shulan Cai
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, P.R. China
| | - Jiaqing Xie
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, P.R. China
| | - Fa-Mei Feng
- College of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, P.R. China
| |
Collapse
|
8
|
Fanning AM, Plush SE, Gunnlaugsson T. Tri- and tetra-substituted cyclen based lanthanide(III) ion complexes as ribonuclease mimics: a study into the effect of log Ka, hydration and hydrophobicity on phosphodiester hydrolysis of the RNA-model 2-hydroxypropyl-4-nitrophenyl phosphate (HPNP). Org Biomol Chem 2016; 13:5804-16. [PMID: 25909178 DOI: 10.1039/c4ob02384f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A series of tetra-substituted 'pseudo' dipeptide ligands of cyclen (1,4,7,10,-tetraazacyclododecane) and a tri-substituted 3'-pyridine ligand of cyclen, and the corresponding lanthanide(III) complexes were synthesised and characterised as metallo-ribonuclease mimics. All complexes were shown to promote hydrolysis of the phosphodiester bond of 2-hydroxypropyl-4-nitrophenyl phosphate (HPNP, τ1/2 = 5.87 × 10(3) h), a well known RNA mimic. The La(III) and Eu(III) tri-substituted 3'-pyridine lanthanide(III) complexes being the most efficient in promoting such hydrolysis at pH 7.4 and at 37 °C; with τ1/2 = 1.67 h for La(III) and 1.74 h for Eu(III). The series was developed to provide the opportunity to investigate the consequences of altering the lanthanide(III) ion, coordination ability and hydrophobicity of a metallo-cavity on the rate of hydrolysis using the model phosphodiester, HPNP, at 37 °C. To further provide information on the role that the log Ka of the metal bound water plays in phosphodiester hydrolysis the protonation constants and the metal ion stability constants of both a tri and tetra-substituted 3'pyridine complex were determined. Our results highlighted several key features for the design of lanthanide(III) ribonucelase mimics; the presence of two metal bound water molecules are vital for pH dependent rate constants for Eu(III) complexes, optimal pH activity approximating physiological pH (∼7.4) may be achieved if the log Ka values for both MLOH and ML(OH)2 species occur in this region, small changes to hydrophobicity within the metallo cavity influence the rate of hydrolysis greatly and an amide adjacent to the metal ion capable of forming hydrogen bonds with the substrate is required for achieving fast hydrolysis.
Collapse
Affiliation(s)
- Ann-Marie Fanning
- School of Chemistry and Trinity Biomedical Sciences Institute, University of Dublin, Trinity College Dublin, Dublin 2, Ireland.
| | | | | |
Collapse
|
9
|
Areti S, Bandaru S, Teotia R, Rao CP. Water-Soluble 8-Hydroxyquinoline Conjugate of Amino-Glucose As Receptor for La3+ in HEPES Buffer, on Whatman Cellulose Paper and in Living Cells. Anal Chem 2015; 87:12348-54. [DOI: 10.1021/acs.analchem.5b03723] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Sivaiah Areti
- Bioinorganic Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sateesh Bandaru
- Bioinorganic Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Rohit Teotia
- Bioinorganic Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Chebrolu P. Rao
- Bioinorganic Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
10
|
Song S, Zheng HF, Feng HT, Zheng YS. Microtubes and hollow microspheres formed by winding of nanoribbons from self-assembly of tetraphenylethylene amide macrocycles. Chem Commun (Camb) 2014; 50:15212-5. [DOI: 10.1039/c4cc05390g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
11
|
Ma X, Yin Y, Geng Z, Yang Z, Wen J, Wang Z. The first example of a model compound of RNase U2 and its intermediate with CPP directly monitored by ESI-MS. RSC Adv 2014. [DOI: 10.1039/c4ra07950g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
|
12
|
Zhang X, Zheng X, Phillips DL, Zhao C. Mechanistic investigation of the cleavage of phosphodiester catalyzed by a symmetrical oxyimine-based macrocyclic dinuclear zinc complex: a DFT study. Dalton Trans 2014; 43:16289-99. [DOI: 10.1039/c4dt01491j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
13
|
Amirkhanov OV, Moroz OV, Znovjyak KO, Sliva TY, Penkova LV, Yushchenko T, Szyrwiel L, Konovalova IS, Dyakonenko VV, Shishkin OV, Amirkhanov VM. Heterobinuclear Zn-Ln and Ni-Ln Complexes with Schiff-Base and Carbacylamidophosphate Ligands: Synthesis, Crystal Structures, and Catalytic Activity. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402224] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
14
|
Zhang X, Xu X, Xu H, Zhang X, Phillips DL, Zhao C. Mechanistic Investigation into the Cleavage of a Phosphomonoester Mediated by a Symmetrical Oxyimine-Based Macrocyclic Zinc(II) Complex. Chemphyschem 2014; 15:1887-98. [DOI: 10.1002/cphc.201301216] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 01/24/2014] [Indexed: 11/08/2022]
|
15
|
Muxel AA, Neves A, Camargo MA, Bortoluzzi AJ, Szpoganicz B, Castellano EE, Castilho N, Bortolotto T, Terenzi H. New La(III) Complex Immobilized on 3-Aminopropyl-Functionalized Silica as an Efficient and Reusable Catalyst for Hydrolysis of Phosphate Ester Bonds. Inorg Chem 2014; 53:2943-52. [DOI: 10.1021/ic402705r] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Alfredo A. Muxel
- Departamento de Química, Laboratório
de Bioinorgânica e Cristalografia (LABINC), Universidade Federal de Santa Catarina, SC, 88040-900 Florianópolis, Brazil
| | - Ademir Neves
- Departamento de Química, Laboratório
de Bioinorgânica e Cristalografia (LABINC), Universidade Federal de Santa Catarina, SC, 88040-900 Florianópolis, Brazil
| | - Maryene A. Camargo
- Departamento de Química, Laboratório
de Bioinorgânica e Cristalografia (LABINC), Universidade Federal de Santa Catarina, SC, 88040-900 Florianópolis, Brazil
| | - Adailton J. Bortoluzzi
- Departamento de Química, Laboratório
de Bioinorgânica e Cristalografia (LABINC), Universidade Federal de Santa Catarina, SC, 88040-900 Florianópolis, Brazil
| | - Bruno Szpoganicz
- Departamento de Química, Laboratório
de Bioinorgânica e Cristalografia (LABINC), Universidade Federal de Santa Catarina, SC, 88040-900 Florianópolis, Brazil
| | - Eduardo E. Castellano
- Instituto
de Física, Universidade Federal de São Carlos, São Carlos, SP 13560-970, Brazil
| | - Nathalia Castilho
- Centro de Biologia Molecular Estrutural, Departamento
de Bioquímica, Universidade Federal de Santa Catarina, SC, 88040-900 Florianópolis, Brazil
| | - Tiago Bortolotto
- Centro de Biologia Molecular Estrutural, Departamento
de Bioquímica, Universidade Federal de Santa Catarina, SC, 88040-900 Florianópolis, Brazil
| | - Hernán Terenzi
- Centro de Biologia Molecular Estrutural, Departamento
de Bioquímica, Universidade Federal de Santa Catarina, SC, 88040-900 Florianópolis, Brazil
| |
Collapse
|
16
|
Nanostructured and/or Nanoscale Lanthanide Metal-Organic Frameworks. LANTHANIDE METAL-ORGANIC FRAMEWORKS 2014. [DOI: 10.1007/430_2014_167] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
17
|
Chandrasekhar V, Bag P, Murugesapandian B, Pandey MD. A phosphorus-based compartmental ligand, (S)P[N(Me)NCH–C6H3-2-O-3-OMe]3 (LH3), enables the assembly of luminescent heterobimetallic linear {L2Zn2Ln}+ [Ln = Gd, Tb, Nd and Eu] complexes. Dalton Trans 2013; 42:15447-56. [DOI: 10.1039/c3dt51431e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
18
|
Han Q, Zhang L, He C, Niu J, Duan C. Metal–Organic Frameworks with Phosphotungstate Incorporated for Hydrolytic Cleavage of a DNA-Model Phosphodiester. Inorg Chem 2012; 51:5118-27. [DOI: 10.1021/ic202685e] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qiuxia Han
- State Key Laboratory
of Fine Chemicals, Dalian Technology of University, Dalian, 116023, People’s Republic
of China
- School
of Chemistry
and Chemical Engineering, Henan University, Kaifeng, 475004, People’s Republic of China
| | - Lejie Zhang
- State Key Laboratory
of Fine Chemicals, Dalian Technology of University, Dalian, 116023, People’s Republic
of China
| | - Cheng He
- State Key Laboratory
of Fine Chemicals, Dalian Technology of University, Dalian, 116023, People’s Republic
of China
| | - Jiangyang Niu
- School
of Chemistry
and Chemical Engineering, Henan University, Kaifeng, 475004, People’s Republic of China
| | - Chunying Duan
- State Key Laboratory
of Fine Chemicals, Dalian Technology of University, Dalian, 116023, People’s Republic
of China
| |
Collapse
|
19
|
Absillis G, Van Deun R, Parac-Vogt TN. Polyoxomolybdate Promoted Hydrolysis of a DNA-Model Phosphoester Studied by NMR and EXAFS Spectroscopy. Inorg Chem 2011; 50:11552-60. [DOI: 10.1021/ic201498u] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Gregory Absillis
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Rik Van Deun
- Inorganic and Physical Chemistry Department, Universiteit Gent, Krijgslaan 281, Building S3, B-9000 Gent, Belgium
| | - Tatjana N. Parac-Vogt
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| |
Collapse
|
20
|
The Utility of 2,2′-Bipyrimidine in Lanthanide Chemistry: From Materials Synthesis to Structural and Physical Properties. ACTA ACUST UNITED AC 2011. [DOI: 10.1155/2011/918435] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This paper reviews the recent investigations undertaken on the use of 2,2′-bipyrimidine (bpm) as a ligand for designing molecular complexes as well as polymeric lanthanide materials. A special emphasis is put on the ability of this polydentate neutral ligand to yield compounds of various dimensionalities, to act as a connector between these large ions, and influence their emissive and magnetic properties. This ligand can adopt a terminal or a bridging coordination mode with lanthanide ions, thus generating a wealth of frameworks of various topologies with the 4f elements. The main focus of this review is to show the originality brought by bpm in lanthanide structural chemistry and solid-state photophysics and magnetism.
Collapse
|
21
|
Lönnberg H. Cleavage of RNA phosphodiester bonds by small molecular entities: a mechanistic insight. Org Biomol Chem 2011; 9:1687-703. [PMID: 21258754 DOI: 10.1039/c0ob00486c] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
RNA molecules participate in many fundamental cellular processes either as a carrier of genetic information or as a catalyst, and hence, RNA has received increasing interest both as a chemotherapeutic agent and as a target of chemotherapy. In addition the dual nature of RNA has led to the RNA-world concept, i.e. an assumption that the evolution at an early stage of life was based on RNA-like oligomers that were responsible for the storage and transfer of information and as catalysts maintained primitive metabolism. Accordingly, the kinetics and mechanisms of the cleavage of RNA phosphodiester bonds have received interest and it is hoped they will shed light on the mechanisms of enzyme action and on the development of artificial enzymes. The major mechanistic findings concerning the cleavage by small molecules and ions and their significance for the development of efficient and biologically applicable artificial catalysts for RNA hydrolysis are surveyed in the present perspective.
Collapse
Affiliation(s)
- Harri Lönnberg
- Department of Chemistry, University of Turku, FIN-20014 Turku, Finland.
| |
Collapse
|
22
|
Ramadan AM, Calatayud Sala JM, Parac-Vogt TN. Trinuclear rare earth metal complexes based on 1,3,5-triamino-1,3,5-trideoxy-cis inositol as catalysts for the hydrolysis of phosphodiesters. Dalton Trans 2011; 40:1230-2. [DOI: 10.1039/c0dt01257b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
23
|
am Ende CW, Meng HY, Ye M, Pandey AK, Zondlo NJ. Design of lanthanide fingers: compact lanthanide-binding metalloproteins. Chembiochem 2010; 11:1738-47. [PMID: 20623571 DOI: 10.1002/cbic.201000056] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lanthanides have interesting chemical properties; these include luminescent, magnetic, and catalytic functions. Toward the development of proteins incorporating novel functions, we have designed a new lanthanide-binding motif, lanthanide fingers. These were designed based on the Zif268 zinc finger, which exhibits a beta beta alpha structural motif. Lanthanide fingers utilize an Asp(2)Glu(2) metal-coordination environment to bind lanthanides through a tetracarboxylate peptide ligand. The iterative design of a general lanthanide-binding peptide incorporated the following key elements: 1) residues with high alpha-helix and beta-sheet propensities in the respective secondary structures; 2) an optimized big box alpha-helix N-cap; 3) a Schellman alpha-helix C-cap motif; and 4) an optional D-Pro-Ser type II' beta-turn in the beta-hairpin. The peptides were characterized for lanthanide binding by circular dichroism (CD), NMR, and fluorescence spectroscopy. In all instances, stabilization of the peptide secondary structures resulted in an increase in metal affinity. The optimized protein design was a 25-residue peptide that was a general lanthanide-binding motif; this binds all lanthanides examined in a competitive aqueous environment, with a dissociation constant of 9.3 microM for binding Er(3+). CD spectra of the peptide-lanthanide complexes are similar to those of zinc fingers and other beta beta alpha proteins. Metal binding involves residues from the N-terminal beta-hairpin and the C terminal alpha-helical segments of the peptide. NMR data indicated that metal binding induced a global change in the peptide structure. The D-Pro-Ser type II' beta-turn motif could be replaced by Thr-Ile to generate genetically encodable lanthanide fingers. Replacement of the central Phe with Trp generated genetically encodable lanthanide fingers that exhibited terbium luminescence greater than that of an EF-hand peptide.
Collapse
Affiliation(s)
- Christopher W am Ende
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | | | | | | | | |
Collapse
|
24
|
Calcium-responsive paramagnetic CEST agents. Bioorg Med Chem 2010; 19:1097-105. [PMID: 20691598 DOI: 10.1016/j.bmc.2010.07.023] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 05/12/2010] [Accepted: 07/12/2010] [Indexed: 02/02/2023]
Abstract
The assessment of changes in the extracellular calcium concentration by magnetic resonance imaging would be a valuable biomedical research tool to monitor brain neuronal activity. In this perspective, we report here the synthesis of novel ligands consisting of tetraamide and bisamide derivatives of cyclen, L(1) and L(2), respectively, each bearing imino(diacetate) moieties for Ca(2+) binding. Yb(3+) and Eu(3+) complexes are investigated as chemical exchange saturation transfer (CEST) agents that respond to the presence of Ca(2+). A CEST effect is observed for both YbL(1) and EuL(1) complexes (B=11.7T), originating from the slow exchange of the amide protons and those of the coordinated water, respectively, whilst no CEST is detected for complexes of L(2). Upon calcium binding, the CEST effect decreases considerably (from 60% to 20% for YbL(1) and from 35% to 10% for EuL(1)). A similar variation is observed in the presence of Mg(2+). The affinity constants between the lanthanide complexes and the alkaline earth metal ions have been estimated from the variation of the CEST effect to be K(YbL(1)-Ca)(aff) = 8 ± 2M(-1), K(YbL(1)-Mg)(aff) = 23 ± 3M(-1) and K(EuL(1)-Ca)(aff) = 10 ± 3M(-1). These low values imply the coordination of the alkaline earth ions to a single iminodiacetate arm. Ca(2+)/Mg(2+) binding to the lanthanide complexes slows down the exchange of the amide protons on YbL(1) which is responsible for the diminished CEST effect. This has been evidenced by assessing the proton exchange rates from the dependency of the CEST effect on the saturation time and the saturation power, in the absence and in the presence of Ca(2+) and Mg(2+). The applicability of the PARACEST MRI agents for Ca(2+) detection has been evaluated on a 16T MRI scanner.
Collapse
|
25
|
Plush SE, Clear NA, Leonard JP, Fanning AM, Gunnlaugsson T. The effect on the lanthanide luminescence of structurally simple Eu(iii) cyclen complexes upon deprotonation of metal bound water molecules and amide based pendant arms. Dalton Trans 2010; 39:3644-52. [DOI: 10.1039/b923383k] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
26
|
Zhang H, Chen D, Zhang G, Mi S, Lu N. Mechanism of the aminolysis of dimethyl phenylphosphinate: A DFT study. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2009.04.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
27
|
He J, Sun J, Mao ZW, Ji LN, Sun H. Phosphodiester hydrolysis and specific DNA binding and cleavage promoted by guanidinium-functionalized zinc complexes. J Inorg Biochem 2009; 103:851-8. [DOI: 10.1016/j.jinorgbio.2009.02.010] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2008] [Revised: 02/23/2009] [Accepted: 02/27/2009] [Indexed: 11/16/2022]
|
28
|
Han M, Zhang HY, Yang LX, Jiang Q, Liu Y. A Reversible Luminescent Lanthanide Switch Based on a Dibenzo[24]-Crown-8−Dipicolinic Acid Conjugate. Org Lett 2008; 10:5557-60. [DOI: 10.1021/ol802376k] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Min Han
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Heng-Yi Zhang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Li-Xu Yang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Qiao Jiang
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Yu Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
| |
Collapse
|
29
|
Nwe K, Andolina CM, Morrow JR. Tethered Dinuclear Europium(III) Macrocyclic Catalysts for the Cleavage of RNA. J Am Chem Soc 2008; 130:14861-71. [DOI: 10.1021/ja8037799] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Kido Nwe
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, New York 14260-3000
| | - Christopher M. Andolina
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, New York 14260-3000
| | - Janet R. Morrow
- Department of Chemistry, University at Buffalo, State University of New York, Amherst, New York 14260-3000
| |
Collapse
|
30
|
Plush SE, Gunnlaugsson T. Solution studies of trimetallic lanthanide luminescent anion sensors: towards ratiometric sensing using an internal reference channel. Dalton Trans 2008:3801-4. [PMID: 18629401 DOI: 10.1039/b805610b] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Luminescent europium and terbium complexes and a mixed Eu(III)-Tb(III) complex were prepared, each with three macrocycles coordinating to a single lanthanide ion to form a trimetallic system, and can be used for the ratiometric sensing of anions in the case of the mixed complex.
Collapse
Affiliation(s)
- Sally E Plush
- School of Chemistry, Centre for Synthesis and Chemical Biology, Trinity College Dublin, Dublin 2, Ireland
| | | |
Collapse
|
31
|
|
32
|
Bonnet CS, Devocelle M, Gunnlaugsson T. Structural studies in aqueous solution of new binuclear lanthanide luminescent peptide conjugates. Chem Commun (Camb) 2008:4552-4. [DOI: 10.1039/b811388b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
33
|
Cartuyvels E, Absillis G, Parac-Vogt TN. Questioning the paradigm of metal complex promoted phosphodiester hydrolysis: [Mo7O24]6−polyoxometalate cluster as an unlikely catalyst for the hydrolysis of a DNA model substrate. Chem Commun (Camb) 2008:85-7. [DOI: 10.1039/b714860g] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
34
|
Lokeren LV, Cartuyvels E, Absillis G, Willem R, Parac-Vogt TN. Phosphoesterase activity of polyoxomolybdates: diffusion ordered NMR spectroscopy as a tool for obtaining insights into the reactivity of polyoxometalate clusters. Chem Commun (Camb) 2008:2774-6. [DOI: 10.1039/b802671h] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
35
|
Plush SE, Gunnlaugsson T. Luminescent sensing of dicarboxylates in water by a bismacrocyclic dinuclear Eu(III) conjugate. Org Lett 2007; 9:1919-22. [PMID: 17447771 DOI: 10.1021/ol070339r] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The design, synthesis, and characterization of a novel dinuclear Eu(III) bismacrocyclic conjugate 1.Eu2 as a delayed luminescent lanthanide sensor for dicarboxylates is discussed. The sensor was shown to bind small dicarboxylic acids such as aspartic, malonic, succinic, or glutaric acid in pH 6.5 solutions. However, only malonic acid gave rise to selective Eu(III) luminescent enhancements, as the emission was reduced for all of the other acids.
Collapse
Affiliation(s)
- Sally E Plush
- School of Chemistry, Centre for Synthesis and Chemical Biology, University of Dublin, Trinity College Dublin, Dublin 2, Ireland
| | | |
Collapse
|
36
|
Um IH, Park JE, Shin YH. Combined dual substituent constant and activation parameter analysis assigns a concerted mechanism to alkaline ethanolysis at phosphorus of Y-substituted phenyl diphenylphosphinates. Org Biomol Chem 2007; 5:3539-43. [DOI: 10.1039/b712427a] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
37
|
|
38
|
Nwe K, Richard JP, Morrow JR. Direct excitation luminescence spectroscopy of Eu(iii) complexes of 1,4,7-tris(carbamoylmethyl)-1,4,7,10- tetraazacyclododecane derivatives and kinetic studies of their catalytic cleavage of an RNA analog. Dalton Trans 2007:5171-8. [DOI: 10.1039/b710072h] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|