101
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Lee YM, Grauffel C, Chen T, Sargsyan K, Lim C. Factors Governing the Different Functions of Zn2+-Sites with Identical Ligands in Proteins. J Chem Inf Model 2019; 59:3946-3954. [DOI: 10.1021/acs.jcim.9b00617] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yu-Ming Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Cédric Grauffel
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Ting Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Karen Sargsyan
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
| | - Carmay Lim
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
- Department of Chemistry, National Tsing Hua University, Hsinchu 300 Taiwan
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102
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Qadir AM, Dege N. Synthesis and Crystal Structure of Nickel(II) and Zinc(II) Complexes with O-Propylxanthate and N, N, N′,N′-Tetramethylethylenediamine. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619050147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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103
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Kalugin AE, Komarov PD, Minyaev ME, Lyssenko KA, Roitershtein DM, Nifant’ev IE. Bis[μ-bis-(2,6-diiso-propyl-phen-yl) phosphato-κ 2 O: O']bis-[(2,2'-bi-pyridine-κ 2 N, N')lithium] toluene disolvate and its catalytic activity in ring-opening polymerization of ∊-caprolactone and l-dilactide. Acta Crystallogr E Crystallogr Commun 2019; 75:848-853. [PMID: 31391980 PMCID: PMC6658944 DOI: 10.1107/s2056989019006960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 05/14/2019] [Indexed: 12/04/2022]
Abstract
The solvated centrosymmmtric title compound, [Li2(C24H34O4P)2(C10H8N2)2]·2C7H8, was formed in the reaction between {Li[(2,6-iPr2C6H3-O)2POO](MeOH)3}(MeOH) and 2,2'-bi-pyridine (bipy) in toluene. The structure has monoclinic (P21/n) symmetry at 120 K and the asymmetric unit consists of half a complex mol-ecule and one mol-ecule of toluene solvent. The diaryl phosphate ligand demonstrates a μ-κO:κO'-bridging coordination mode and the 2,2'-bi-pyridine ligand is chelating to the Li+ cation, generating a distorted tetra-hedral LiN2O2 coordination polyhedron. The complex exhibits a unique dimeric Li2O4P2 core. One isopropyl group is disordered over two orientations in a 0.621 (4):0.379 (4) ratio. In the crystal, weak C-H⋯O and C-H⋯π inter-actions help to consolidate the packing. Catalytic systems based on the title complex and on the closely related complex {Li[(2,6-iPr2C6H3-O)2POO](MeOH)3}(MeOH) display activity in the ring-opening polymerization of ∊-caprolactone and l-dilactide.
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Affiliation(s)
- Alexey E. Kalugin
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
- Moscow Institute of Physics and Technology, Department of Biological and Medical Physics, 9 Institutskiy Per., Dolgoprudny, Moscow Region, 141701, Russian Federation
| | - Pavel D. Komarov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
| | - Mikhail E. Minyaev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
| | - Konstantin A. Lyssenko
- G.V. Plekhanov Russian University of Economics, 36 Stremyanny Per., Moscow, 117997, Russian Federation
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation
| | - Dmitrii M. Roitershtein
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, Moscow 119991, Russian Federation
| | - Ilya E. Nifant’ev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991, Moscow, Russian Federation
- Chemistry Department, M.V. Lomonosov Moscow State University, 1 Leninskie Gory Str., Building 3, Moscow 119991, Russian Federation
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104
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Majumdar D, Das S, Thomas R, Ullah Z, Sreejith S, Das D, Shukla P, Bankura K, Mishra D. Syntheses, X-ray crystal structures of two new Zn(II)-dicyanamide complexes derived from H2vanen-type compartmental ligands: Investigation of thermal, photoluminescence, in vitro cytotoxic effect and DFT-TDDFT studies. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.04.041] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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105
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Dynamical Oligomerisation of Histidine Rich Intrinsically Disordered ProteinS Is Regulated through Zinc-Histidine Interactions. Biomolecules 2019; 9:biom9050168. [PMID: 31052346 PMCID: PMC6571702 DOI: 10.3390/biom9050168] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/26/2019] [Accepted: 04/26/2019] [Indexed: 12/19/2022] Open
Abstract
Intrinsically disordered proteins (IDPs) can form functional oligomers and in some cases, insoluble disease related aggregates. It is therefore vital to understand processes and mechanisms that control pathway distribution. Divalent cations including Zn2+ can initiate IDP oligomerisation through the interaction with histidine residues but the mechanisms of doing so are far from understood. Here we apply a multi-disciplinary approach using small angle X-ray scattering, nuclear magnetic resonance spectroscopy, calorimetry and computations to show that that saliva protein Histatin 5 forms highly dynamic oligomers in the presence of Zn2+. The process is critically dependent upon interaction between Zn2+ ions and distinct histidine rich binding motifs which allows for thermodynamic switching between states. We propose a molecular mechanism of oligomerisation, which may be generally applicable to other histidine rich IDPs. Finally, as Histatin 5 is an important saliva component, we suggest that Zn2+ induced oligomerisation may be crucial for maintaining saliva homeostasis.
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106
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Bafaro EM, Maciejewski MW, Hoch JC, Dempski RE. Concomitant disorder and high-affinity zinc binding in the human zinc- and iron-regulated transport protein 4 intracellular loop. Protein Sci 2019; 28:868-880. [PMID: 30793391 DOI: 10.1002/pro.3591] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/21/2019] [Accepted: 02/13/2019] [Indexed: 12/27/2022]
Abstract
The human zinc- and iron-regulated transport protein 4 (hZIP4) protein is the major plasma membrane protein responsible for the uptake of zinc in the body, and as such it plays a key role in cellular zinc homeostasis. hZIP4 plasma membrane levels are regulated through post-translational modification of its large, disordered, histidine-rich cytosolic loop (ICL2) in response to intracellular zinc concentrations. Here, structural characteristics of the isolated disordered loop region, both in the absence and presence of zinc, were investigated using nuclear magnetic resonance (NMR) spectroscopy. NMR chemical shifts, coupling constants and temperature coefficients of the apoprotein, are consistent with a random coil with minor propensities for transient polyproline Type II helices and β-strand in regions implicated in post-translational modifications. The ICL2 protein remains disordered upon zinc binding, which induces exchange broadening. Paramagnetic relaxation enhancement experiments reveal that the histidine-rich region in the apoprotein makes transient tertiary contacts with predicted post-translational modification sites. The residue-specific data presented here strengthen the relationship between hZIP4 post-translational modifications, which impact its role in cellular zinc homeostasis, and zinc sensing by the intracellular loop. Furthermore, the zinc sensing mechanism employed by the ICL2 protein demonstrates that high-affinity interactions can occur in the presence of conformational disorder.
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Affiliation(s)
- Elizabeth M Bafaro
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
| | - Mark W Maciejewski
- Department of Molecular Biology and Biophysics, UConn Health, Farmington, Connecticut 06030
| | - Jeffrey C Hoch
- Department of Molecular Biology and Biophysics, UConn Health, Farmington, Connecticut 06030
| | - Robert E Dempski
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, Massachusetts 01609
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107
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Asaithambi G, Periasamy V, Karuppannan N. Fluorescence sensing response of zinc(II) and pyrophosphate ions by benzoxazole appended dipodal Schiff base. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.10.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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108
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Akhtar M, Georgieva I, Zahariev T, Trendafilova N, Ahmad T, Noor A, Tahir MN, Mazhar M, Isab AA, Ahmad S. Synthesis, X-ray structure, and DFT modeling of a new polymeric zinc(II) complex of 2-mercaptonicotinic acid (MntH), {[Zn(Mnt–Mnt)(en)]·H2O}n. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-018-2330-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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109
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Keikha N, Rezaeifard A, Jafarpour M. Heterogeneous Fenton-like activity of novel metallosalophen magnetic nanocomposites: significant anchoring group effect. RSC Adv 2019; 9:32966-32976. [PMID: 35529144 PMCID: PMC9073167 DOI: 10.1039/c9ra05097c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 10/08/2019] [Indexed: 12/21/2022] Open
Abstract
Novel magnetically recoverable Fe(iii)- and Mn(iii)salophen complexes were designed for the effective degradation of hazardous organic dyes using a heterogeneous advanced oxidation process.
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Affiliation(s)
- Narges Keikha
- Catalysis Research Laboratory
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
| | - Abdolreza Rezaeifard
- Catalysis Research Laboratory
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
| | - Maasoumeh Jafarpour
- Catalysis Research Laboratory
- Department of Chemistry
- Faculty of Science
- University of Birjand
- Birjand
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110
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Synthesis, structure and DNA binding properties of a homodinuclear Cu(II) complex: An experimental and theoretical approach. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.08.081] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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111
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Liu B, Hou Y, Wang X, Ma X, Fang S, Huang T, Chen Y, Bai Z, Lin S, Zhang R, Hu K. Structural basis of the mechanism of β-methyl epimerization by enzyme MarH. Org Biomol Chem 2019; 17:9605-9614. [PMID: 31681917 DOI: 10.1039/c9ob01996k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Structures of free MarH and MarH in complex with l-Trp, the analogue of substrate, were determined and the mechanism of MarH-catalyzed stereospecific β-methyl epimerization was proposed.
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112
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Ahamad MN, Shahid M, Ansari A, Kumar M, Khan IM, Ahmad M, Rahisuddin R, Arif R. A combined experimental and theoretical approach to investigate the structure, magnetic properties and DNA binding affinity of a homodinuclear Cu(ii) complex. NEW J CHEM 2019. [DOI: 10.1039/c9nj00228f] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A dicopper(ii) complex of a flexible amino alcohol anchored with an acetate auxiliary was designed and characterized by spectral, X-ray crystallographic, magnetic and DFT studies; moreover, it was evaluated for its DNA binding properties. The experimental results are supported by theoretical analyses.
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Affiliation(s)
- M. Naqi Ahamad
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - M. Shahid
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Azaj Ansari
- Department of Chemistry
- Central University of Haryana
- Mahendergarh-123031
- India
| | - Manjeet Kumar
- Department of Chemistry
- Central University of Haryana
- Mahendergarh-123031
- India
| | - Ishaat M. Khan
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Musheer Ahmad
- Department of Applied Chemistry (ZHCET)
- Aligarh Muslim University
- Aligarh-202002
- India
| | | | - Rizwan Arif
- Department of Chemistry
- Jamia Millia Islamia (A Central University)
- New Delhi
- India
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113
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Jiang G, Zhu W, Chen Q, Shi A, Wu Y, Zhang G, Li X, Li Y, Fan X, Wang J. A new tetraphenylethylene based AIE sensor with light-up and tunable measuring range for adenosine triphosphate in aqueous solution and in living cells. Analyst 2018; 142:4388-4392. [PMID: 29116261 DOI: 10.1039/c7an01336a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An AIE based tetraphenylethylene derivative (TPPTPE) was synthesized for light-up sensing of ATP in aqueous solution. The measuring range for ATP can be tuned by varying the concentration of the TPPTPE. A one-step straightforward quantitative analysis of the ATP level in cell lysates can be realized using the TPPTPE. Moreover, the TPPTPE can be used for monitoring apyrase activity in aqueous solution and detecting ATP both in living cancer cell lines and in living normal cell lines.
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Affiliation(s)
- Guoyu Jiang
- Key Laboratory of Organo-Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P. R. China.
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114
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Lamine W, Boughdiri S, Christ L, Morell C, Chermette H. Coordination chemistry of Zn
2+
with Sal(ph)en ligands: Tetrahedral coordination or penta‐coordination? a DFT analysis. J Comput Chem 2018. [DOI: 10.1002/jcc.25755] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Walid Lamine
- Université de Lyon, Institut des Sciences AnalytiquesUMR CNRS 5280, Université Claude Bernard Lyon 1 ENS‐Lyon, 69622, Villeurbanne Cedex France
- Université de Tunis El ManarFaculté des Sciences de Tunis, UR11ES19 Unité de recherche Physico‐Chimie des Matériaux Condensés El‐Manar II, 2092, Tunis Tunisia
| | - Salima Boughdiri
- Université de Tunis El ManarFaculté des Sciences de Tunis, UR11ES19 Unité de recherche Physico‐Chimie des Matériaux Condensés El‐Manar II, 2092, Tunis Tunisia
| | - Lorraine Christ
- Université de Lyon, Institut de Recherches sur la Catalyse et l'Environnement de LyonIRCELYON, UMR CNRS 5256, Université Lyon 1 69626, Villeurbanne Cedex France
| | - Christophe Morell
- Université de Lyon, Institut des Sciences AnalytiquesUMR CNRS 5280, Université Claude Bernard Lyon 1 ENS‐Lyon, 69622, Villeurbanne Cedex France
| | - Henry Chermette
- Université de Lyon, Institut des Sciences AnalytiquesUMR CNRS 5280, Université Claude Bernard Lyon 1 ENS‐Lyon, 69622, Villeurbanne Cedex France
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115
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Garai M, Das A, Joshi M, Paul S, Shit M, Choudhury AR, Biswas B. Synthesis and spectroscopic characterization of a photo-stable tetrazinc(II)–Schiff base cluster: A rare case of ligand centric phenoxazinone synthase activity. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.09.044] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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116
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Lamine W, Boughdiri S, Jeanneau E, Sanglar C, Morell C, Christ L, Chermette H. Unexpected Structure of a Helical N 4 -Schiff-Base Zn(II) Complex and Its Demetallation: Experimental and Theoretical Studies. Chemphyschem 2018; 19:2938-2946. [PMID: 30238613 DOI: 10.1002/cphc.201800514] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Indexed: 11/07/2022]
Abstract
A new Zn-N4 -Schiff base L=((±)-trans-N,N'-Bis(2-aminobenzylidene)-1,2-diaminocyclohexane) complex was synthesized and fully characterized, showing an unexpected self-assembled double-stranded helicate structure. The X-ray crystal analysis of the Zn2 L2 complex ((C40 H44 N8 Zn2 ,CH2 Cl2 , a=14.2375(3) Å, b=16.7976(4) Å, c=16.1613(4) Å, monoclinic, P21 /n, Z=4) shows a centrosymmetrical structure in which zinc atoms are in distorted tetrahedral environments, revealing an M- (R, R) left-handed helicity in its asymmetric unit. However, it was observed that this dinuclear complex is thermodynamically unstable in the presence of small water amounts and undergoes demetallation into free N4-Schiff base ligand and ZnO nanoparticles. This hydrolysis process was thoroughly identified and monitored through detailed 1 H NMR, DOSY NMR analysis. The reaction mechanism of this demetallation event was elucidated by using the DFT method, involving an activation energy smaller than 13 kcal/mol. Besides, a theoretical mechanism of the demetallation process is given for the first time.
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Affiliation(s)
- Walid Lamine
- Unité de recherche physico-chimie des Matériaux à l'état condensé, Département de Chimie, Faculté des Sciences de Tunis, Université Tunis El Manar, 2092, Tunis, Tunisie.,Institut des Sciences Analytiques, UMR 5280 CNRS/, Université Claude Bernard Lyon 1, 5 rue de la Doua, 69622, Villeurbanne Cedex, France
| | - Salima Boughdiri
- Unité de recherche physico-chimie des Matériaux à l'état condensé, Département de Chimie, Faculté des Sciences de Tunis, Université Tunis El Manar, 2092, Tunis, Tunisie
| | - Erwan Jeanneau
- Centre de Diffractométrie Henri Longchambon-Université Lyon1, 43, Bd du 11 Novembre 1918, 69616, Villeurbanne, France
| | - Corinne Sanglar
- Institut des Sciences Analytiques, UMR 5280 CNRS/, Université Claude Bernard Lyon 1, 5 rue de la Doua, 69622, Villeurbanne Cedex, France
| | - Christophe Morell
- Institut des Sciences Analytiques, UMR 5280 CNRS/, Université Claude Bernard Lyon 1, 5 rue de la Doua, 69622, Villeurbanne Cedex, France
| | - Lorraine Christ
- Institut de Recherches sur la Catalyse et Environnement de Lyon, UMR5256 CNRS/Université Claude Bernard Lyon 1, 2 ave Einstein, 69626, Villeurbanne Cedex, France
| | - Henry Chermette
- Institut des Sciences Analytiques, UMR 5280 CNRS/, Université Claude Bernard Lyon 1, 5 rue de la Doua, 69622, Villeurbanne Cedex, France
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117
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Xiong Q, Lin L, Zhao X, Lang J, Liu X, Feng X. Zinc(II)-Catalyzed Asymmetric Diels-Alder Reaction of ( E)-1-Phenyl Dienes with β,γ-Unsaturated α-Ketoesters. J Org Chem 2018; 83:12527-12534. [PMID: 30222927 DOI: 10.1021/acs.joc.8b01771] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A highly regio-, diastereo-, and enantioselective Diels-Alder reaction of β,γ-unsaturated α-ketoesters with ( E)-1-phenyl dienes has been accomplished by using a stable and easily available chiral N,N'-dioxide/zinc(II) complex as catalyst. Only one isomer of the corresponding cyclohexenes with three chiral centers was obtained in good to excellent yields with excellent ee values under mild reaction conditions. The configurations of the product and chiral N,N'-dioxide/zinc(II) catalyst were identified by X-ray diffraction analysis. In addition, a possible catalytic model was proposed to explain the origin of the asymmetric induction.
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Affiliation(s)
- Qian Xiong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , People's Republic of China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , People's Republic of China
| | - Xiaohu Zhao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , People's Republic of China
| | - Jiawen Lang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , People's Republic of China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , People's Republic of China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu 610064 , People's Republic of China
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118
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Das S, Sahu A, Joshi M, Paul S, Shit M, Roy Choudhury A, Biswas B. Ligand-Centered Radical Activity by a Zinc-Schiff-Base Complex towards Catechol Oxidation. ChemistrySelect 2018. [DOI: 10.1002/slct.201801084] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Subrata Das
- Department of Chemistry; University of North Bengal; Darjeeling 734013, West Bengal India
| | - Amrita Sahu
- Department of Electrical Engineering; Temple University; Philadelphia 741235 USA
| | - Mayank Joshi
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Manauli PO; Mohali 140 306 India
| | - Suvendu Paul
- Department of Chemistry; University of Kalyani, Kalyani; 741235, West Bengal India
| | - Madhusudan Shit
- Department of Chemistry; Dinobandhu Andrews College; Kolkata 700084,West Bengal India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Manauli PO; Mohali 140 306 India
| | - Bhaskar Biswas
- Department of Chemistry; University of North Bengal; Darjeeling 734013, West Bengal India
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119
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Wang J, Zhai Y, Wang Y, Yu H, Zhao W, Wei Y. Selective aerobic oxidation of halides and amines with an inorganic-ligand supported zinc catalyst. Dalton Trans 2018; 47:13323-13327. [PMID: 30182094 DOI: 10.1039/c8dt03003k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A practical, efficient and environmentally benign catalytic protocol for the oxidative cross-coupling reaction of halides with amines, oxidative self-coupling of amines and oxidation of halides was developed with inorganic-ligand supported ZnPOM (NH4)4[ZnMo6O18(OH)6] using molecular oxygen. This method mainly utilizes an inorganic polymolybdate ligand to support the Zn2+ ion, avoiding the use of complicated organic ligands.
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Affiliation(s)
- Jingjing Wang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, P.R. China.
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120
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Silk fibroin-based hydrogels as a protective matrix for stabilization of enzymes against pH denaturation. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.07.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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121
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Jayasinghe‐Arachchige VM, Hu Q, Sharma G, Paul TJ, Lundberg M, Quinonero D, Parac‐Vogt TN, Prabhakar R. Hydrolysis of chemically distinct sites of human serum albumin by polyoxometalate: A hybrid QM/MM (ONIOM) study. J Comput Chem 2018; 40:51-61. [DOI: 10.1002/jcc.25528] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 12/28/2022]
Affiliation(s)
| | - Qiaoyu Hu
- Department of Chemistry University of Miami Coral Gables Florida 33146
| | - Gaurav Sharma
- Department of Chemistry University of Miami Coral Gables Florida 33146
| | - Thomas J. Paul
- Department of Chemistry University of Miami Coral Gables Florida 33146
| | - Marcus Lundberg
- Department of Chemistry ‐ Ångström Laboratory Uppsala University 751 21, Uppsala Sweden
| | - David Quinonero
- Department of Chemistry Universitat de les Illes Balears Palma de Mallorca Spain
| | | | - Rajeev Prabhakar
- Department of Chemistry University of Miami Coral Gables Florida 33146
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122
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Na Pombejra S, Jamklang M, Uhrig JP, Vu K, Gelli A. The structure-function analysis of the Mpr1 metalloprotease determinants of activity during migration of fungal cells across the blood-brain barrier. PLoS One 2018; 13:e0203020. [PMID: 30161190 PMCID: PMC6117016 DOI: 10.1371/journal.pone.0203020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 08/14/2018] [Indexed: 12/21/2022] Open
Abstract
Cryptococcal meningoencephalitis, the most common form of cryptococcosis, is caused by the opportunistic fungal pathogen, Cryptococcus neoformans. Molecular strategies used by C. neoformans to invade the central nervous system (CNS) have been the focus of several studies. Recently, the role of a novel secreted metalloprotease (Mpr1) in the pathogenicity of C. neoformans was confirmed by studies demonstrating that Mpr1 mediated the migration of fungal cells into the CNS. Given this central function, the aim here was to identify the molecular determinants of Mpr1 activity and resolve their role in the migration of cryptococci across the blood-brain barrier (BBB). The Mpr1 protein belongs to an understudied group of metalloproteases of the M36 class of fungalysins unique to fungi. They are generally synthesized as propeptides with fairly long prodomains and highly conserved regions within their catalytic core. Through structure-function analysis of Mpr1, our study identified the prodomain cleavage sites of Mpr1 and demonstrated that when mutated, the prodomain appears to remain attached to the catalytic C-terminus of Mpr1 rendering a nonfunctional Mpr1 protein and an inability for cryptococci to cross the BBB. We found that proteolytic activity of Mpr1 was dependent on the coordination of zinc with two histidine residues in the active site of Mpr1, since amino acid substitutions in the HExxH motif abolished Mpr1 proteolytic activity and prevented the migration of cryptococci across the BBB. A phylogenetic analysis of Mpr1 revealed a distinct pattern likely reflecting the neurotropic nature of C. neoformans and the specific function of Mpr1 in breaching the BBB. This study contributes to a deeper understanding of the molecular regulation of Mpr1 activity and may lead to the development of specific inhibitors that could be used to restrict fungal penetration of the CNS and thus prevent cryptococcal meningoencephalitis-related deaths.
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Affiliation(s)
- Sarisa Na Pombejra
- Department of Pharmacology, School of Medicine, University of California, Davis, California, United States of America
| | - Mantana Jamklang
- Department of Pharmacology, School of Medicine, University of California, Davis, California, United States of America
| | - John P. Uhrig
- Department of Pharmacology, School of Medicine, University of California, Davis, California, United States of America
| | - Kiem Vu
- Department of Pharmacology, School of Medicine, University of California, Davis, California, United States of America
| | - Angie Gelli
- Department of Pharmacology, School of Medicine, University of California, Davis, California, United States of America
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123
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MIKURIYA M, SHIBUTANI A, YAMADA H, YOSHIOKA D. μ-Phenolato-μ-azido-bridged Dinuclear Zinc(II) Complex with a Schiff-base Having Imidazolyl Groups. X-RAY STRUCTURE ANALYSIS ONLINE 2018. [DOI: 10.2116/xraystruct.34.33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Masahiro MIKURIYA
- Department of Applied Chemistry for Environment and Research Center for Coordination Molecule-based Devices, School of Science and Technology, Kwansei Gakuin University
| | - Ai SHIBUTANI
- Department of Applied Chemistry for Environment and Research Center for Coordination Molecule-based Devices, School of Science and Technology, Kwansei Gakuin University
| | - Hitomi YAMADA
- Department of Applied Chemistry for Environment and Research Center for Coordination Molecule-based Devices, School of Science and Technology, Kwansei Gakuin University
| | - Daisuke YOSHIOKA
- Department of Applied Chemistry for Environment and Research Center for Coordination Molecule-based Devices, School of Science and Technology, Kwansei Gakuin University
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124
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Synthesis and characterization of phenoxo-bridged dinuclear zinc(II) halide complexes: Role of electron withdrawing group on phosphatase activity. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1517-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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125
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Mu X, Xu D. QM/MM Molecular Dynamics Investigations of the Substrate Binding of Leucotriene A4 Hydrolase: Implication for the Catalytic Mechanism. J Phys Chem B 2018; 122:7253-7263. [PMID: 29965770 DOI: 10.1021/acs.jpcb.8b04203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
LTA4H is a monozinc bifunctional enzyme which exhibits both aminopeptidase and epoxide hydrolase activities. Its dual functions in anti- and pro-inflammatory roles have attracted wide attention to the inhibitor design. In this work, we tried to construct Michaelis complexes of LTA4H with both a native peptide substrate and LTA4 molecule using combined quantum mechanics and molecular mechanics molecular dynamics simulations. First of all, the zinc ion is coordinated by H295, H299, and E318. For its aminopeptidase activity, similar to conventional peptidases, the fourth ligand to the zinc ion is suggested to be an active site water, which is further hydrogen bonded with a downstream glutamic acid, E296. For the epoxide hydrolase activity, the fourth ligand to the zinc ion is found to be an epoxy oxygen atom. The potential of mean force calculation indicates about an 8.5 kcal/mol activation barrier height for the ring-opening reaction, which will generate a metastable carbenium intermediate. Subsequent frontier molecular orbital analyses suggest that the next step would be the nucleophilic attacking reaction at the C12 atom by a water molecule activated by D375. Our simulations also analyzed functions of several important residues like R563, K565, E271, Y383, and Y378 in the binding of peptide and LTA4.
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Affiliation(s)
- Xia Mu
- MOE Key Laboratory of Green Chemistry and Technology, College of Chemistry , Sichuan University , Chengdu , Sichuan , People's Republic of China 610064
| | - Dingguo Xu
- MOE Key Laboratory of Green Chemistry and Technology, College of Chemistry , Sichuan University , Chengdu , Sichuan , People's Republic of China 610064
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126
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Parrot A, Collin S, Bruylants G, Reinaud O. The 3 rd degree of biomimetism: associating the cavity effect, Zn II coordination and internal base assistance for guest binding and activation. Chem Sci 2018; 9:5479-5487. [PMID: 30079177 PMCID: PMC6048688 DOI: 10.1039/c8sc01129j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/29/2018] [Indexed: 12/12/2022] Open
Abstract
The synthesis and characterization of a resorcinarene-based tetra(imidazole) ligand is reported. The properties of the corresponding ZnII complex are studied in depth, notably by NMR spectroscopy. In MeCN, acid-base titration reveals that one out of the four imidazole arms is hemi-labile and can be selectively protonated, thereby opening a coordination site in the exo position. Quite remarkably, the 4th imidazole arm promotes binding of an acidic molecule (a carboxylic acid, a β-diketone or acetamide), by acting as an internal base, which allows guest binding as an anion to the metal center in the endo position. Most importantly, the presence of this labile imidazole arm makes the ZnII complex active for the catalyzed hydration of acetonitrile. It is proposed that it acts as a general base for activating a water molecule in the vicinity of the metal center during its nucleophilic attack to the endo-bound MeCN substrate. This system presents a unique degree of biomimetism when considering zinc enzymes: a pocket for guest binding, a similar first coordination sphere, a coordination site available for water activation in the cis position relative to the substrate and finally an internal imidazole residue that plays the role of a general base.
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Affiliation(s)
- A Parrot
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques , CNRS UMR8601 , Université Paris Descartes , Sorbonne Paris Cité , 45 rue des Saints Pères , 75006 Paris , France .
| | - S Collin
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques , CNRS UMR8601 , Université Paris Descartes , Sorbonne Paris Cité , 45 rue des Saints Pères , 75006 Paris , France .
| | - G Bruylants
- Engineering of Molecular NanoSystems , Ecole Polytechnique de Bruxelles , Université Libre de Bruxelles (ULB) , Avenue F. D. Roosevelt 50, CP165/64 , B-1050 Brussels , Belgium
| | - O Reinaud
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques , CNRS UMR8601 , Université Paris Descartes , Sorbonne Paris Cité , 45 rue des Saints Pères , 75006 Paris , France .
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127
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Mazmanian K, Dudev T, Lim C. How First Shell–Second Shell Interactions and Metal Substitution Modulate Protein Function. Inorg Chem 2018; 57:14052-14061. [DOI: 10.1021/acs.inorgchem.8b01029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Karine Mazmanian
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
- Chemical Biology and Molecular Biophysics Program, Taiwan International Graduate Program, Academia Sinica, Taipei 10617, Taiwan
- Taiwan and Institute of Biochemical Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Todor Dudev
- Faculty of Chemistry and Pharmacy, Sofia University, Sofia 1164, Bulgaria
| | - Carmay Lim
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
- Department of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
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128
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Boga SB, Alhassan AB, Cooper AB, Doll R, Shih NY, Shipps G, Deng Y, Zhu H, Nan Y, Sun R, Zhu L, Desai J, Patel M, Muppalla K, Gao X, Wang J, Yao X, Kelly J, Gudipati S, Paliwal S, Tsui HC, Wang T, Sherborne B, Xiao L, Hruza A, Buevich A, Zhang LK, Hesk D, Samatar AA, Carr D, Long B, Black S, Dayananth P, Windsor W, Kirschmeier P, Bishop R. Discovery of 3(S)-thiomethyl pyrrolidine ERK inhibitors for oncology. Bioorg Med Chem Lett 2018; 28:2029-2034. [PMID: 29748051 DOI: 10.1016/j.bmcl.2018.04.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/10/2018] [Accepted: 04/25/2018] [Indexed: 10/17/2022]
Abstract
Compound 5 (SCH772984) was identified as a potent inhibitor of ERK1/2 with excellent selectivity against a panel of kinases (0/231 kinases tested @ 100 nM) and good cell proliferation activity, but suffered from poor PK (rat AUC PK @10 mpk = 0 μM h; F% = 0) which precluded further development. In an effort to identify novel ERK inhibitors with improved PK properties with respect to 5, a systematic exploration of sterics and composition at the 3-position of the pyrrolidine led to the discovery of a novel 3(S)-thiomethyl pyrrolidine analog 28 with vastly improved PK (rat AUC PK @10 mpk = 26 μM h; F% = 70).
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Affiliation(s)
- Sobhana Babu Boga
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States.
| | - Abdul-Basit Alhassan
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Alan B Cooper
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Ronald Doll
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Neng-Yang Shih
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Gerald Shipps
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Yongqi Deng
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Hugh Zhu
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Yang Nan
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Robert Sun
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Liang Zhu
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Jagdish Desai
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Mehul Patel
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Kiran Muppalla
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Xiaolei Gao
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - James Wang
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Xin Yao
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Joseph Kelly
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Subrahmanyam Gudipati
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Sunil Paliwal
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Hon-Chung Tsui
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Tong Wang
- Discovery Chemistry, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, MA 02115, United States
| | - Bradley Sherborne
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Li Xiao
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Alan Hruza
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Alexei Buevich
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Li-Kang Zhang
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - David Hesk
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Ahmed A Samatar
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Donna Carr
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Brian Long
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Stuart Black
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Priya Dayananth
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - William Windsor
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Paul Kirschmeier
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
| | - Robert Bishop
- Discovery Chemistry, Merck & Co., Inc., 2015 Galloping Hill Rd, Kenilworth, NJ 07033, United States
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129
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T DT, I N, N M, N B, G B, R N, D N. Fluorenone based fluorescent probe for selective "turn-on" detection of pyrophosphate and alanine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 199:465-471. [PMID: 29153841 DOI: 10.1016/j.saa.2017.11.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 11/02/2017] [Accepted: 11/04/2017] [Indexed: 06/07/2023]
Abstract
To sense biologically important entities with different size and dimensions, a fluorenone based fluorescent receptor was designed and synthesized. Probe 1 displayed a distinct fluorescence enhancement emission at 565nm for pyrophosphate and 530nm for alanine in polar solvent. The fluorescence titration experiments confirm 1:1 stoichiometric ratio with high-binding constant and very low limit of detection (LoD) values. Receptor 1 showed a highly selective and sensitive recognition to HP2O73- and to alanine over other competitive anions and amino acids. In addition, the fluorescence lifetime measurement and reversible binding study results support the practical importance of 1.
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Affiliation(s)
- Daniel Thangadurai T
- Department of Nanoscience and Technology, Sri Ramakrishana Engineering College, Coimbatore 641 022, Tamilnadu, India.
| | - Nithya I
- Department of Nanoscience and Technology, Sri Ramakrishana Engineering College, Coimbatore 641 022, Tamilnadu, India
| | - Manjubaashini N
- Department of Nanoscience and Technology, Sri Ramakrishana Engineering College, Coimbatore 641 022, Tamilnadu, India
| | - Bhuvanesh N
- Department of Chemistry, Karunya University, Coimbatore 641 115, Tamilnadu, India
| | - Bharathi G
- Department of Physics, Bharathiar University, Coimbatore 641 046, Tamilnadu, India
| | - Nandhakumar R
- Department of Chemistry, Karunya University, Coimbatore 641 115, Tamilnadu, India
| | - Nataraj D
- Department of Physics, Bharathiar University, Coimbatore 641 046, Tamilnadu, India
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130
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Nehra P, Khungar B, Singh RP, Sivasubramanian S, Jha PN, Saini V. Synthesis, characterization and applications of imidazolium ionic liquid-tagged zinc(II) complex. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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131
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Das B, Daver H, Pyrkosz-Bulska M, Gumienna-Kontecka E, Himo F, Nordlander E. An Unsymmetric Ligand with a N5
O2
Donor Set and Its Corresponding Dizinc Complex: A Structural and Functional Phosphoesterase Model. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701416] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Biswanath Das
- Chemical Physics; Department of Chemistry; Lund University; Box 124 22100 Lund Sweden
| | - Henrik Daver
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University; 106 91 Stockholm Sweden
| | - Monika Pyrkosz-Bulska
- Faculty of Chemistry; Arrhenius Laboratory; University of Wroclaw; F. Joliot-Curie Street 14 50-383 Wroclaw Poland
- Institute of Chemistry; Arrhenius Laboratory; University of Silesia; Szkolna 9 40-006 Katowice Poland
| | - Elzbieta Gumienna-Kontecka
- Faculty of Chemistry; Arrhenius Laboratory; University of Wroclaw; F. Joliot-Curie Street 14 50-383 Wroclaw Poland
| | - Fahmi Himo
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University; 106 91 Stockholm Sweden
| | - Ebbe Nordlander
- Chemical Physics; Department of Chemistry; Lund University; Box 124 22100 Lund Sweden
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132
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La DD, Bhosale SV, Jones LA, Bhosale SV. Tetraphenylethylene-Based AIE-Active Probes for Sensing Applications. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12189-12216. [PMID: 29043778 DOI: 10.1021/acsami.7b12320] [Citation(s) in RCA: 281] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
This Review provides a comprehensive analysis of recent development in the field of aggregation-induced emission (AIE)-active tetraphenylethylene (TPE) luminophores and their applications in biomolecular science. It begins with a discussion of the diverse range of structural motifs that have found particular applications in sensing, and demonstrates that TPE structures and their derivatives have been used for a diverse range of analytes such as such as H+, anions, cations, heavy metals, organic volatiles, and toxic gases. Advances are discussed in depth where TPE is utilized as a mechanoluminescent material in bioinspired receptor units with specificity for analytes for such as glucose or RNA. The rapid advances in sensor research make this summary of recent developments in AIE-active TPE luminophores timely, in order to disseminate the advantages of these materials for sensing of analytes in solution, as well as the importance of solid and aggregated states in controlling sensing behavior.
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Affiliation(s)
| | - Sidhanath V Bhosale
- Polymers and Functional Material Division , CSIR-Indian Institute of Chemical Technology , Hyderabad , 500 007 Telangana , India
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133
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Unsymmetrical tripodal amines containing one pyridine-armed with N3O2-donor set: Coordination chemistry with zinc(II) and theoretical studies. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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134
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Zhang KY, Yu Q, Wei H, Liu S, Zhao Q, Huang W. Long-Lived Emissive Probes for Time-Resolved Photoluminescence Bioimaging and Biosensing. Chem Rev 2018; 118:1770-1839. [DOI: 10.1021/acs.chemrev.7b00425] [Citation(s) in RCA: 479] [Impact Index Per Article: 79.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kenneth Yin Zhang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Qi Yu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Huanjie Wei
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Shujuan Liu
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, P. R. China
- Shaanxi
Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), Xi’an 710072, P. R. China
- Key
Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced
Materials (IAM), Jiangsu National Synergetic Innovation Center for
Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing 211800, P. R. China
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135
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Young CJ, Richard K, Beruar A, Lo SY, Siemann S. An investigation of the pH dependence of copper-substituted anthrax lethal factor and its mechanistic implications. J Inorg Biochem 2018; 182:1-8. [PMID: 29407865 DOI: 10.1016/j.jinorgbio.2018.01.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 12/18/2017] [Accepted: 01/22/2018] [Indexed: 10/18/2022]
Abstract
Anthrax lethal factor (LF) is a zinc-dependent endopeptidase involved in the cleavage of proteins critical to the maintenance of host signaling pathways during anthrax infections. Although zinc is typically regarded as the native metal ion in vivo, LF is highly tolerant to metal substitution, with its replacement by copper yielding an enzyme (CuLF) 4.5-fold more active than the native zinc protein (at pH 7). The current study demonstrates that by careful choice of the buffer, ionic strength, pH and substrate, the activity ratio of CuLF and native LF can be increased to >40-fold. Using a fluorogenic LF substrate, such optimized assay conditions can be exploited to detect LF concentrations as low as 2 pM. In contrast to the zinc form, CuLF was found to be inhibited by bromide and iodide ions, to be resistant to metal loss under acidic conditions, and to display a sharp pH dependence with significantly shifted alkaline limb towards more acidic conditions. The alkaline limb in the enzyme's pH profile is suggested to originate from changes in the protonation state of the metal-bound water molecule which serves as the nucleophile in the catalytic mechanism. Based on these observations and studies on other zinc proteases, a minimal mechanism for LF is proposed.
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Affiliation(s)
- Calvin J Young
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada
| | - Kaitlin Richard
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada
| | - Ananya Beruar
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada
| | - Suet Y Lo
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada
| | - Stefan Siemann
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada.
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136
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Rajput A, Kumar A, Sengupta A, Tyagi P, Arora H. Copper ( ii) dimers stabilized by bis(phenol) amine ligands: theoretical and experimental insights. NEW J CHEM 2018. [DOI: 10.1039/c8nj02591f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Comparative structural and magnetic studies on the binuclear Cu complexes of 1L(2−)/2L(2−) have been done and their electronic structures and observed electronic transitions (DFT and TD-DFT calculations) rationalized. The dimer complex can be converted into the corresponding monomeric Cu(ii) complex, [1L2CuII2(X)] (X = py), by adding an exogenous ligand such as pyridine (py).
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Affiliation(s)
- Amit Rajput
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208 016
- India
- Department of Basic and Applied Sciences
| | - Akhilesh Kumar
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208 016
- India
| | - Arunava Sengupta
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208 016
- India
| | - Priyanka Tyagi
- Department of Basic and Applied Sciences
- School of Engineering
- G. D. Goenka University
- Gurugram 122103
- India
| | - Himanshu Arora
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208 016
- India
- Department of Basic and Applied Sciences
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137
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Meng Q, Wang Y, Feng H, Zhou F, Zhou B, Wang C, Zhang R, Zhang Z. A novel glucosamine-linked fluorescent chemosensor for the detection of pyrophosphate in an aqueous medium and live cells. NEW J CHEM 2018. [DOI: 10.1039/c7nj04107a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A glucosamine-linked Cu2+ ensemble has been successfully developed for detection of pyrophosphate (PPi) in aqueous medium and in live MD-AMB-231 cells.
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Affiliation(s)
- Qingtao Meng
- School of Chemical Engineering
- University of Science and Technology Liaoning
- Anshan
- P. R. China
| | - Yue Wang
- School of Chemical Engineering
- University of Science and Technology Liaoning
- Anshan
- P. R. China
| | - Huan Feng
- School of Chemical Engineering
- University of Science and Technology Liaoning
- Anshan
- P. R. China
| | - Fang Zhou
- School of Chemical Engineering
- University of Science and Technology Liaoning
- Anshan
- P. R. China
| | - Bo Zhou
- School of Chemical Engineering
- University of Science and Technology Liaoning
- Anshan
- P. R. China
| | - Cuiping Wang
- School of Chemical Engineering
- University of Science and Technology Liaoning
- Anshan
- P. R. China
| | - Run Zhang
- School of Chemical Engineering
- University of Science and Technology Liaoning
- Anshan
- P. R. China
- Australian Institute for Bioengineering and Nanotechnology
| | - Zhiqiang Zhang
- School of Chemical Engineering
- University of Science and Technology Liaoning
- Anshan
- P. R. China
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138
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Sinha S, Chowdhury B, Adarsh NN, Ghosh P. A hexa-quinoline basedC3-symmetric chemosensor for dual sensing of zinc(ii) and PPi in an aqueous mediumviachelation induced “OFF–ON–OFF” emission. Dalton Trans 2018; 47:6819-6830. [DOI: 10.1039/c8dt00611c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
“OFF–ON–OFF” luminescence switching behavior of a hexa-quinoline based sensor towards Zn2+and PPi in an aqueous buffer medium is demonstrated.
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Affiliation(s)
- Sanghamitra Sinha
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Bijit Chowdhury
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
| | - Nayarassery N. Adarsh
- Instituto Catalan de Nanociencia y Nanotecnologia (ICN2)
- Edifici ICN2
- Campus UAB
- Cerdanyola del Valles 08193
- Spain
| | - Pradyut Ghosh
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700 032
- India
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139
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Venkatesan V, Kumar SKA, Bothra S, Sahoo SK. Highly selective iodide sensing ability of an anthraquinone-derived Schiff base in semi-aqueous medium and its performance in antioxidation, anti-inflammation and HRBC membrane protection. NEW J CHEM 2018. [DOI: 10.1039/c7nj03824k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a new iodide (I−) ion selective chromogenic receptor (3) was developed by reacting 9,10-anthraquinone with 2,4-dinitrophenylhydrazine.
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Affiliation(s)
- Vetriarasu Venkatesan
- Department of Chemistry, School of Advanced Sciences, VIT University
- Vellore-632014
- India
| | - S. K. Ashok Kumar
- Department of Chemistry, School of Advanced Sciences, VIT University
- Vellore-632014
- India
| | - Shilpa Bothra
- Department of Applied Chemistry, S. V. National Institute Technology
- Surat-395007
- India
| | - Suban K. Sahoo
- Department of Applied Chemistry, S. V. National Institute Technology
- Surat-395007
- India
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140
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Mandal T, Hossain A, Dhara A, Al Masum A, Konar S, Manna SK, Seth SK, Pathak S, Mukhopadhyay S. Terpyridine derivatives as “turn-on” fluorescence chemosensors for the selective and sensitive detection of Zn2+ ions in solution and in live cells. Photochem Photobiol Sci 2018; 17:1068-1074. [DOI: 10.1039/c8pp00186c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A terpyridine based compound L1 was designed and synthesized as an “off–on” chemosensor for the detection of Zn2+.
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Affiliation(s)
- Tripti Mandal
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Anowar Hossain
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Anamika Dhara
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Abdulla Al Masum
- Department of Life Science & Bio-technology
- Jadavpur University
- Kolkata 700032
- India
| | - Saugata Konar
- Department of Chemistry
- The Bhawanipur Education Society College
- Kolkata 700 020
- India
| | | | | | - Sudipta Pathak
- Department of Chemistry
- Haldia Government College
- Purba Medinipur
- India
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141
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Beyeh NK, Díez I, Taimoory SM, Meister D, Feig AI, Trant JF, Ras RHA, Rissanen K. High-affinity and selective detection of pyrophosphate in water by a resorcinarene salt receptor. Chem Sci 2017; 9:1358-1367. [PMID: 29675184 PMCID: PMC5887233 DOI: 10.1039/c7sc05167k] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 12/15/2017] [Indexed: 11/21/2022] Open
Abstract
Pyrophosphate (PPi) is a byproduct of DNA and RNA synthesis, and abnormal levels are indicative of disease. We report the high-affinity binding of PPi in water by N-alkyl ammonium resorcinarene chloride receptors. Experimental analysis using 1H and 31P NMR, isothermal titration calorimetry, mass spectrometry, and UV-vis spectroscopy all support exceptional selectivity of these systems for PPi in water. The measured affinity of K1 = 1.60 × 107 M-1 for PPi is three orders of magnitude larger than that observed for binding to another phosphate, ATP. This exceptional anion-binding affinity in water is explored through a detailed density functional theory computational study. These systems provide a promising avenue for the development of future innovative medical diagnostic tools.
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Affiliation(s)
- Ngong Kodiah Beyeh
- Aalto University , School of Science , Department of Applied Physics , Puumiehenkuja 2 , FI-02150 , Espoo , Finland . ; .,University of Windsor , Department of Chemistry and Biochemistry , Windsor , ON N9B 3P4 , Canada .
| | - Isabel Díez
- Aalto University , School of Science , Department of Applied Physics , Puumiehenkuja 2 , FI-02150 , Espoo , Finland . ;
| | - S Maryamdokht Taimoory
- University of Windsor , Department of Chemistry and Biochemistry , Windsor , ON N9B 3P4 , Canada .
| | - Daniel Meister
- University of Windsor , Department of Chemistry and Biochemistry , Windsor , ON N9B 3P4 , Canada .
| | - Andrew I Feig
- Wayne State University , Department of Chemistry , 5101 Cass Ave. , Detroit , MI 48202 , USA
| | - John F Trant
- University of Windsor , Department of Chemistry and Biochemistry , Windsor , ON N9B 3P4 , Canada .
| | - Robin H A Ras
- Aalto University , School of Science , Department of Applied Physics , Puumiehenkuja 2 , FI-02150 , Espoo , Finland . ; .,Aalto University , School of Chemical Engineering , Department of Bioproducts and Biosystems , Kemistintie 1 , 02150 Espoo , Finland
| | - Kari Rissanen
- University of Jyvaskyla , Department of Chemistry , P. O. Box 35 , FI-40014 Jyväskylä , Finland .
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142
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Abu Ali H, Kamel S, Abu Shamma A. Novel structures of Zn(II) biometal cation with the biologically active substituted acetic acid and nitrogen donor ligands: Synthesis, spectral, phosphate diester catalytic hydrolysis and anti-microbial studies. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hijazi Abu Ali
- Department of Chemistry; Birzeit University; West Bank Palestine
| | - Shayma Kamel
- Department of Chemistry; Birzeit University; West Bank Palestine
| | - Amani Abu Shamma
- Department of Chemistry; Birzeit University; West Bank Palestine
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143
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Rhaman MM, Powell DR, Hossain MA. Supramolecular Assembly of Uridine Monophosphate (UMP) and Thymidine Monophosphate (TMP) with a Dinuclear Copper(II) Receptor. ACS OMEGA 2017; 2:7803-7811. [PMID: 29214233 PMCID: PMC5709781 DOI: 10.1021/acsomega.7b01293] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 10/31/2017] [Indexed: 05/14/2023]
Abstract
Understanding the intermolecular interactions between nucleotides and artificial receptors is crucial to understanding the role of nucleic acids in living systems. However, direct structural evidence showing precise interactions and bonding features of a nucleoside monophosphate (NMP) with a macrocycle-based synthetic molecule has not been provided so far. Herein, we present two novel crystal structures of uridine monophosphate (UMP) and thymidine monophosphate (TMP) complexes with a macrocycle-based dinuclear receptor. Structural characterization of these complexes reveals that the receptor recognizes UMP through coordinate-covalent interactions with phosphates and π-π stackings with nucleobases and TMP through coordinate-covalent interactions with phosphate groups. Furthermore, the receptor has been shown to effectively bind nucleoside monophosphates in the order of GMP > AMP > UMP > TMP > CMP in water at physiological pH, as investigated by an indicator displacement assay.
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Affiliation(s)
- Md Mhahabubur Rhaman
- Department
of Chemistry and Biochemistry, Jackson State
University, Jackson, Mississippi 39217, United States
| | - Douglas R. Powell
- Department
of Chemistry and Biochemistry, University
of Oklahoma, Norman, Oklahoma 73019, United
States
| | - Md. Alamgir Hossain
- Department
of Chemistry and Biochemistry, Jackson State
University, Jackson, Mississippi 39217, United States
- E-mail:
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144
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Wybon CCD, Mensch C, Hollanders C, Gadais C, Herrebout WA, Ballet S, Maes BUW. Zn-Catalyzed tert-Butyl Nicotinate-Directed Amide Cleavage as a Biomimic of Metallo-Exopeptidase Activity. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02599] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Clarence C. D. Wybon
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Carl Mensch
- Molecular Spectroscopy, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Charlie Hollanders
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Charlène Gadais
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
- Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Wouter A. Herrebout
- Molecular Spectroscopy, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Steven Ballet
- Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Bert U. W. Maes
- Organic Synthesis, Department of Chemistry, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
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145
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Duboué-Dijon E, Mason PE, Fischer HE, Jungwirth P. Hydration and Ion Pairing in Aqueous Mg2+ and Zn2+ Solutions: Force-Field Description Aided by Neutron Scattering Experiments and Ab Initio Molecular Dynamics Simulations. J Phys Chem B 2017; 122:3296-3306. [DOI: 10.1021/acs.jpcb.7b09612] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Elise Duboué-Dijon
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, 16610 Prague 6, Czech Republic
| | - Philip E. Mason
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, 16610 Prague 6, Czech Republic
| | - Henry E. Fischer
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France
| | - Pavel Jungwirth
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, 16610 Prague 6, Czech Republic
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146
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Synthesis of new triazole based imidazo[1,2-a]pyrazine-benzimidazole conjugates: H-bonding assisted FRET efficient ratiometric detection of pyrophosphate. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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147
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Pascual I, Valiente PA, García G, Valdés-Tresanco ME, Arrebola Y, Díaz L, Bounaadja L, Uribe RM, Pacheco MC, Florent I, Charli JL. Discovery of novel non-competitive inhibitors of mammalian neutral M1 aminopeptidase (APN). Biochimie 2017; 142:216-225. [PMID: 28964831 PMCID: PMC7127808 DOI: 10.1016/j.biochi.2017.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 09/22/2017] [Indexed: 12/17/2022]
Abstract
Neutral metallo-aminopeptidase (APN) catalyzes the cleavage of neutral and basic amino acids from the N-terminus of protein or peptide substrates. APN expression is dysregulated in inflammatory diseases as well as in several types of cancer. Therefore, inhibitors of APN may be effective against cancer and inflammation. By virtual screening and enzymatic assays, we identified three non-competitive inhibitors (α > 1) of the porcine and human APN with Ki values in the μM range. These non-peptidic compounds lack the classical zinc-binding groups (ZBG) present in most of the APN inhibitors. Molecular docking simulations suggested the novel inhibitors suppress APN activity by an alternative mechanism to Zn coordination: they interacted with residues comprising the S1 and S5′ subsites of APN. Of note, these compounds also inhibited the porcine aminopeptidase A (pAPA) using a competitive inhibition mode. This indicated differences in the binding mode of these compounds with APN and APA. Based on sequence and structural analyses, we predicted the significance of targeting human APN residues: Ala-351, Arg-442, Ala-474, Phe-896 and Asn-900 for improving the selectivity of the identified compounds. Remarkably, the intraperitoneal injection of compounds BTB07018 and JFD00064 inhibited APN activity in rat brain, liver and kidney indicating good bio-distribution of these inhibitors in vivo. These data reinforce the idea of designing novel APN inhibitors based on lead compounds without ZBG. We identified three non-competitive inhibitors of the human and porcine APN. These compounds lack the classical zinc-binding groups of the APN inhibitors. We proposed these molecules block APN by an alternative mechanism to Zn chelation. All the inhibitors interact with APN residues comprising the S1 and S5′ subsites. Two compounds blocked the APN activity in the brain, liver and kidney of rats.
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Affiliation(s)
- Isel Pascual
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | - Pedro A Valiente
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | - Gabriela García
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | | | - Yarini Arrebola
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | - Lisset Díaz
- Center for Protein Studies, Faculty of Biology, University of Havana, Cuba.
| | - Lotfi Bounaadja
- Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR 7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005, Paris, France.
| | - Rosa María Uribe
- Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Ave Universidad 2001, Cuernavaca, Morelos, Mexico.
| | | | - Isabelle Florent
- Molécules de Communication et Adaptation des Microorganismes, (MCAM, UMR 7245), Muséum National Histoire Naturelle, Sorbonne Universités, CNRS, CP 52, 57 Rue Cuvier, 75005, Paris, France.
| | - Jean-Louis Charli
- Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Ave Universidad 2001, Cuernavaca, Morelos, Mexico.
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148
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Ajmal M. Review: electrochemical studies on some metal complexes having anti-cancer activities. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1362559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Muhammad Ajmal
- Faculty of Sciences, Department of Chemistry, Allama Iqbal Open University, Islamabad, Pakistan
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149
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Ghosh S, Goswami K, Ghosh K. Pyrrole-based tetra-amide for hydrogen pyrophosphate (HP2O73−) and F− ions in sol-gel medium. Supramol Chem 2017. [DOI: 10.1080/10610278.2017.1348603] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Sumit Ghosh
- Department of Chemistry, University of Kalyani, Kalyani, India
| | - Koushik Goswami
- Department of Chemistry, University of Kalyani, Kalyani, India
| | - Kumaresh Ghosh
- Department of Chemistry, University of Kalyani, Kalyani, India
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150
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Li X, Liu W, Song M. Ferrocene-Containing Acylhydrazone Receptors: Synthesis, Structures and Electrochemical Anion Recognition Characteristics. JOURNAL OF CHEMICAL RESEARCH 2017. [DOI: 10.3184/174751917x15017625991813] [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
Ferrocene-containing redox receptors bearing the 2-(quinolin-8-yloxy)acetohydrazide (qa) moiety on one arm, [Fe(Cpqa)Cp], or two arms, [Fe(Cpqa)2], have been synthesised and the X-ray crystal structure of [Fe(Cpqa)2] determined. [Fe(Cpqa)2] can sense H2PO−4 both electrochemically and selectively even in the presence of a large excess of Cl− and ClO−4.
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Affiliation(s)
- Xia Li
- College of Materials and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467044, P.R. China
| | - Wei Liu
- College of Materials and Chemical Engineering, Henan University of Urban Construction, Pingdingshan 467044, P.R. China
| | - Maoping Song
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P.R. China
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