1
|
Nakamura M, Yoshioka H, Takada T. Conformational Switching of Pyrenes Associated on Hairpin Loop Region by DNA B‐Z Transition. ChemistrySelect 2022. [DOI: 10.1002/slct.202200696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mitsunobu Nakamura
- Department of Applied Chemistry University of Hyogo 2167 Shosha Himeji Hyogo 671–2280 Japan
| | - Hibiki Yoshioka
- Department of Applied Chemistry University of Hyogo 2167 Shosha Himeji Hyogo 671–2280 Japan
| | - Tadao Takada
- Department of Applied Chemistry University of Hyogo 2167 Shosha Himeji Hyogo 671–2280 Japan
| |
Collapse
|
2
|
Supramolecular Chirogenesis in Bis-Porphyrin: Crystallographic Structure and CD Spectra for a Complex with a Chiral Guanidine Derivative. Symmetry (Basel) 2021. [DOI: 10.3390/sym13020275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The complexation of (3aR,7aR)-N-(3,5-bis(trifluoromethyl)phenyl)octahydro-2H-benzo[d]imidazol-2-imine (BTI), as a guest, to ethane-bridged bis(zinc octaethylporphyrin), bis(ZnOEP), as a host, has been studied by means of ultraviolet-visible (UV-Vis) and circular dichroism (CD) absorption spectroscopies, single crystal X-ray diffraction, and computational simulation. The formation of 1:2 host-guest complex was established by X-ray diffraction and UV-Vis titration studies. Two guest BTI molecules are located at the opposite sides of two porphyrin subunits of bis(ZnOEP) host, which is resting in the anti-conformation. The complexation of BTI molecules proceed via coordination of the imine nitrogens to the zinc ions of each porphyrin subunit of the host. Such supramolecular organization of the complex results in a screw arrangement of the two porphyrin subunits, inducing a strong CD signal in the Soret (B) band region. The corresponding DFT computational studies are in a good agreement with the experimental results and prove the presence of 1:2 host-guest complex as the major component in the solution (97.7%), but its optimized geometry differs from that observed in the solid-state. The UV-Vis and CD spectra simulated by using the solution-state geometry and the TD-DFT/ωB97X-D/cc-pVDZ + SMD (CH2Cl2) level of theory reproduced the experimentally obtained UV-Vis and CD spectra and confirmed the difference between the solid-state and solution structures. Moreover, it was shown that CD spectrum is very sensitive to the spatial arrangement of porphyrin subunits.
Collapse
|
3
|
Norvaiša K, Kielmann M, Senge MO. Porphyrins as Colorimetric and Photometric Biosensors in Modern Bioanalytical Systems. Chembiochem 2020; 21:1793-1807. [PMID: 32187831 PMCID: PMC7383976 DOI: 10.1002/cbic.202000067] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/04/2020] [Indexed: 12/18/2022]
Abstract
Advances in porphyrin chemistry have provided novel materials and exciting technologies for bioanalysis such as colorimetric sensor array (CSA), photo-electrochemical (PEC) biosensing, and nanocomposites as peroxidase mimetics for glucose detection. This review highlights selected recent advances in the construction of supramolecular assemblies based on the porphyrin macrocycle that provide recognition of various biologically important entities through the unique porphyrin properties associated with colorimetry, spectrophotometry, and photo-electrochemistry.
Collapse
Affiliation(s)
- Karolis Norvaiša
- School of Chemistry, SFI Tetrapyrrole LaboratoryTrinity Biomedical Sciences Institute152–160 Pearse Street, Trinity College Dublin The University of DublinDublin2Ireland
| | - Marc Kielmann
- School of Chemistry, SFI Tetrapyrrole LaboratoryTrinity Biomedical Sciences Institute152–160 Pearse Street, Trinity College Dublin The University of DublinDublin2Ireland
| | - Mathias O. Senge
- School of Chemistry, SFI Tetrapyrrole LaboratoryTrinity Biomedical Sciences Institute152–160 Pearse Street, Trinity College Dublin The University of DublinDublin2Ireland
- Institute for Advanced Study (TUM-IAS)Lichtenberg-Strasse 2a85748GarchingGermany
| |
Collapse
|
4
|
Osadchuk I, Borovkov V, Aav R, Clot E. Benchmarking computational methods and influence of guest conformation on chirogenesis in zinc porphyrin complexes. Phys Chem Chem Phys 2020; 22:11025-11037. [DOI: 10.1039/d0cp00965b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different computational methods and influence of the guest conformation and solvent effect to analyze chirogenesis in zinc porphyrins by several chiral compounds have been investigated.
Collapse
Affiliation(s)
- Irina Osadchuk
- Department of Chemistry and Biotechnology
- Tallinn University of Technology
- Tallinn 12618
- Estonia
- ICGM, University of Montpellier
| | - Victor Borovkov
- Department of Chemistry and Biotechnology
- Tallinn University of Technology
- Tallinn 12618
- Estonia
- College of Chemistry and Materials Science
| | - Riina Aav
- Department of Chemistry and Biotechnology
- Tallinn University of Technology
- Tallinn 12618
- Estonia
| | - Eric Clot
- ICGM, University of Montpellier
- CNRS
- ENSCM
- Montpellier
- France
| |
Collapse
|
5
|
Nakamura M, Takada T, Yamana K. Controlling Pyrene Association in DNA Duplexes by B‐ to Z‐DNA Transitions. Chembiochem 2019; 20:2949-2954. [DOI: 10.1002/cbic.201900350] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Mitsunobu Nakamura
- Department of Applied ChemistryUniversity of Hyogo 2167 Shosha Himeji Hyogo 671–2280 Japan
| | - Tadao Takada
- Department of Applied ChemistryUniversity of Hyogo 2167 Shosha Himeji Hyogo 671–2280 Japan
| | - Kazushige Yamana
- Department of Applied ChemistryUniversity of Hyogo 2167 Shosha Himeji Hyogo 671–2280 Japan
| |
Collapse
|
6
|
Sun K, Guo L, Cai C, Hou Z, Ren Q. Porphyrin-Hyperbranched Copolymer Films as Recyclable Photooxidation Catalysts for 1,5-Dihydroxynaphthalene. ChemCatChem 2017. [DOI: 10.1002/cctc.201701219] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Kaifang Sun
- School of Chemistry and Chemical Engineering; Shanghai Jiaotong University; Shanghai 200240 P.R. China
| | - Lintong Guo
- School of Chemistry and Chemical Engineering; Shanghai Jiaotong University; Shanghai 200240 P.R. China
| | - Cheng Cai
- School of Chemistry and Chemical Engineering; Shanghai Jiaotong University; Shanghai 200240 P.R. China
| | - Zongsheng Hou
- School of Chemistry and Chemical Engineering; Shanghai Jiaotong University; Shanghai 200240 P.R. China
| | - Qizhi Ren
- School of Chemistry and Chemical Engineering; Shanghai Jiaotong University; Shanghai 200240 P.R. China
| |
Collapse
|
7
|
Marsoner T, Schmidt OP, Triemer T, Luedtke NW. DNA-Targeted Inhibition of MGMT. Chembiochem 2017; 18:894-898. [PMID: 28177192 DOI: 10.1002/cbic.201600652] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Indexed: 12/17/2022]
Abstract
The cationic porphyrin 5,10,15,20-tetrakis (diisopropyl-guanidine)-21H,23H-porphine (DIGPor) selectively binds to DNA containing O6 -methylguanine (O6 -MeG) and inhibits the DNA repair enzyme O6 -methylguanine-DNA methyltransferase (MGMT). The O6 -MeG selectivity and MGMT inhibitory activity of DIGPor were improved by incorporating ZnII into the porphyrin. The resulting metal complex (Zn-DIGPor) potentiated the activity of the DNA-alkylating drug temozolomide in an MGMT-expressing cell line. To the best of our knowledge, this is the first example of DNA-targeted MGMT inhibition.
Collapse
Affiliation(s)
- Theodor Marsoner
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Olivia P Schmidt
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Therese Triemer
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Nathan W Luedtke
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| |
Collapse
|
8
|
Kawara K, Tsuji G, Taniguchi Y, Sasaki S. Synchronized Chiral Induction between [5]Helicene-Spermine Ligand andB-ZDNA Transition. Chemistry 2017; 23:1763-1769. [DOI: 10.1002/chem.201605276] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Kensuke Kawara
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi, Higashi-ku Fukuoka 812-8582 Japan
| | - Genichiro Tsuji
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi, Higashi-ku Fukuoka 812-8582 Japan
| | - Yosuke Taniguchi
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi, Higashi-ku Fukuoka 812-8582 Japan
| | - Shigeki Sasaki
- Graduate School of Pharmaceutical Sciences; Kyushu University; 3-1-1 Maidashi, Higashi-ku Fukuoka 812-8582 Japan
| |
Collapse
|
9
|
Schulze M, Scherer A, Hampel F, Stryker JM, Tykwinski RR. Synthesis and Aggregation Behavior of Chiral Naphthoquinoline Petroporphyrin Asphaltene Model Compounds. Chemistry 2016; 22:3378-3386. [DOI: 10.1002/chem.201504683] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Matthias Schulze
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU); Henkestraße 42 91054 Erlangen Germany
| | - Alexander Scherer
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU); Henkestraße 42 91054 Erlangen Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU); Henkestraße 42 91054 Erlangen Germany
| | - Jeffrey M. Stryker
- Department of Chemistry; University of Alberta; Edmonton AB T6G 2G2 Canada
| | - Rik R. Tykwinski
- Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU); Henkestraße 42 91054 Erlangen Germany
| |
Collapse
|
10
|
Dubarle-Offner J, Moussa J, Amouri H, Jouvelet B, Bouteiller L, Raynal M. Induced Circular Dichroism in Phosphine Gold(I) Aryl Acetylide Urea Complexes through Hydrogen-Bonded Chiral Co-Assemblies. Chemistry 2016; 22:3985-90. [DOI: 10.1002/chem.201504441] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 12/07/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Julien Dubarle-Offner
- Sorbonne Universités; UPMC Univ Paris 06; CNRS; Institut Parisien de Chimie Moléculaire; 4 Place Jussieu 75005 Paris France
| | - Jamal Moussa
- Sorbonne Universités; UPMC Univ Paris 06; CNRS; Institut Parisien de Chimie Moléculaire; 4 Place Jussieu 75005 Paris France
| | - Hani Amouri
- Sorbonne Universités; UPMC Univ Paris 06; CNRS; Institut Parisien de Chimie Moléculaire; 4 Place Jussieu 75005 Paris France
| | - Benjamin Jouvelet
- Sorbonne Universités; UPMC Univ Paris 06; CNRS; Institut Parisien de Chimie Moléculaire; 4 Place Jussieu 75005 Paris France
| | - Laurent Bouteiller
- Sorbonne Universités; UPMC Univ Paris 06; CNRS; Institut Parisien de Chimie Moléculaire; 4 Place Jussieu 75005 Paris France
| | - Matthieu Raynal
- Sorbonne Universités; UPMC Univ Paris 06; CNRS; Institut Parisien de Chimie Moléculaire; 4 Place Jussieu 75005 Paris France
| |
Collapse
|
11
|
Antoni PM, Naik A, Albert I, Rubbiani R, Gupta S, Ruiz-Sanchez P, Munikorn P, Mateos JM, Luginbuehl V, Thamyongkit P, Ziegler U, Gasser G, Jeschke G, Spingler B. (Metallo)porphyrins as Potent Phototoxic Anti-Cancer Agents after Irradiation with Red Light. Chemistry 2014; 21:1179-83. [DOI: 10.1002/chem.201405470] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Indexed: 01/26/2023]
|
12
|
Jung J, Jo J, Laskar M, Lee D. Stereodynamics of Metal-Ligand Assembly: What Lies Beneath the “Simple” Spectral Signatures ofC2-Symmetric Chiral Chelates. Chemistry 2013; 19:5156-68. [DOI: 10.1002/chem.201204216] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Indexed: 11/09/2022]
|
13
|
Choi JK, Sargsyan G, Olive AM, Balaz M. Highly sensitive and selective spectroscopic detection of mercury(II) in water by using pyridylporphyrin-DNA conjugates. Chemistry 2012; 19:2515-22. [PMID: 23239513 DOI: 10.1002/chem.201202461] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 10/17/2012] [Indexed: 11/09/2022]
Abstract
Single-labeled pyridylporphyrin-DNA conjugates are reported as highly sensitive and selective spectroscopic sensors for mercury(II) ions in water. The effects of chemical structure (thymine versus adenine), number of nucleotides (monomer versus octamer), and porphyrin metalation (Zn versus free base) on the sensitivity and selectivity of mercury(II) detection are explored. The results indicated that pyridylporphyrin rather than the nucleobase plays a crucial role in mercury(II) sensing, because porphyrin conjugates with both adenosine and thymidine exhibited excellent mercury(II) detection. Mercury(II) recognition was shown in emission quenching, as well as in a redshift of the porphyrin Soret band absorption. The limit of detection (LOD, 3σ/slope) of zinc(II) pyridylporphyrin-5'-oligodeoxythymidine (ZnPorT8) obtained by fluorescence quenching was calculated to be 21.14 nM. Other metal cations (Zn(2+), Cd(2+), Pb(2+), Mn(2+), Ca(2+), Ni(2+), Mg(2+), Fe(2+), Cu(2+), and Na(+)) did not interfere with the emission and absorption sensing of mercury(II). Free-base porphyrin-oligothymine conjugate 2HPorT8 displayed similar sensitivity to ZnPorT8 but different selectivity. The results also implied that the sensing properties of porphyrin-deoxythymidine conjugates could potentially be tuned by porphyrin metalation.
Collapse
Affiliation(s)
- Jung Kyu Choi
- Department of Chemistry, University of Wyoming, 1000 E. University Avenue, Laramie, WY 82071, USA
| | | | | | | |
Collapse
|
14
|
Villari V, Mineo P, Scamporrino E, Micali N. Amino acids recognition by water-soluble uncharged porphyrin tweezers: Spectroscopic evidences in high optical density solutions. Chem Phys 2012. [DOI: 10.1016/j.chemphys.2012.04.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
15
|
Zelenka K, Trnka T, Tišlerová I, Monti D, Cinti S, Naitana ML, Schiaffino L, Venanzi M, Laguzzi G, Luvidi L, Mancini G, Nováková Z, Šimák O, Wimmer Z, Drašar P. Spectroscopic, Morphological, and Mechanistic Investigation of the Solvent-Promoted Aggregation of Porphyrins Modified in meso-Positions by Glucosylated Steroids. Chemistry 2011; 17:13743-53. [DOI: 10.1002/chem.201101163] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Indexed: 01/21/2023]
|
16
|
D'Urso A, Holmes AE, Berova N, Balaz M, Purrello R. Z-DNA Recognition in B-Z-B Sequences by a Cationic Zinc Porphyrin. Chem Asian J 2011; 6:3104-9. [DOI: 10.1002/asia.201100161] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Indexed: 11/08/2022]
|
17
|
|
18
|
Fujimoto K, Aizawa S, Oota I, Chiba J, Inouye M. Specific Induced Circular Dichroism and Enhanced B to Z Transitions of Duplexes Stabilized by Chromophore-Linked Alkynylnucleoside Residues. Chemistry 2010; 16:2401-6. [DOI: 10.1002/chem.200902882] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
19
|
Mammana A, Pescitelli G, Asakawa T, Jockusch S, Petrovic AG, Monaco RR, Purrello R, Turro NJ, Nakanishi K, Ellestad GA, Balaz M, Berova N. Role of environmental factors on the structure and spectroscopic response of 5'-DNA-porphyrin conjugates caused by changes in the porphyrin-porphyrin interactions. Chemistry 2010; 15:11853-66. [PMID: 19844929 DOI: 10.1002/chem.200902029] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We have explored the utility, strength, and limitation of through-space exciton-coupled circular dichroism in determination of the secondary structure of optically active chromophoric nanoarrays using the example of end-capped porphyrin- and metalloporphyrin-oligodeoxynucleotide conjugates. We put special emphasis on the explanation of the origin and significance of the distinctive multiple bands in the CD spectra (trisignate and tetrasignate CD bands). Such CD profiles are often observed in chiral aggregates or multichromophoric arrays but have never before been studied in detail. We found that variation of temperature and ionic strength has a profound effect on the geometry of the porphyrin-DNA conjugates and thus the nature of electronic interactions. At lower temperatures and in the absence of NaCl all three 5'-DNA-porphyrin conjugates display negative bisignate CD exciton couplets of variable intensity in the Soret region resulting from through-space interaction between the electric transition dipole moments of the two end-capped porphyrins. As the temperature is raised these exciton couplets are transformed into single positive bands originating from the porphyrin-single-strand DNA interactions. At higher ionic strengths and low temperatures, multisignate CD bands are observed in the porphyrin Soret region. These CD signature bands originate from a combination of intermolecular, end-to-end porphyrin-porphyrin stacking between duplexes and porphyrin-DNA interactions. The intermolecular aggregation was confirmed by fluorescence and absorption spectroscopy and resonance light scattering. DeVoe theoretical CD calculations, in conjunction with molecular dynamics simulations and Monte Carlo conformational searches, were used to mimic the observed bisignate exciton-coupled CD spectra as well as multiple CD bands. Calculations correctly predicted the sign and shape of the experimentally observed CD spectra. These studies reveal that the exciton-coupled circular dichroism is a very useful technique for the determination of the structure of optically active arrays.
Collapse
Affiliation(s)
- Angela Mammana
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Monti D, De Rossi M, Sorrenti A, Laguzzi G, Gatto E, Stefanelli M, Venanzi M, Luvidi L, Mancini G, Paolesse R. Supramolecular Chirality in Solvent-Promoted Aggregation of Amphiphilic Porphyrin Derivatives: Kinetic Studies and Comparison between Solution Behavior and Solid-State Morphology by AFM Topography. Chemistry 2009; 16:860-70. [DOI: 10.1002/chem.200901964] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
21
|
Synthesis of meso-tetraphenyl porphyrins via condensation of dipyrromethanes with N-tosyl imines. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.01.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
22
|
Scamporrino E, Mineo P, Dattilo S, Vitalini D, Spina E. Uncharged Water-Soluble Metal-Bis-Porphyrins Like Molecular Tweezers for Amino Acids. Macromol Rapid Commun 2007. [DOI: 10.1002/marc.200700234] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
23
|
Balaz M, Li BC, Jockusch S, Ellestad GA, Berova N. Tetraarylporphyrin as a selective molecular cap for non-Watson-Crick guanine-adenine base-pair sequences. Angew Chem Int Ed Engl 2007; 45:3530-3. [PMID: 16625664 DOI: 10.1002/anie.200504431] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Milan Balaz
- Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
| | | | | | | | | |
Collapse
|
24
|
Angelini N, Micali N, Mineo P, Scamporrino E, Villari V, Vitalini D. Uncharged water-soluble Co(II)-porphyrin: a receptor for aromatic alpha-amino acids. J Phys Chem B 2007; 109:18645-51. [PMID: 16853399 DOI: 10.1021/jp052408u] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Changes in the UV-vis spectra and induced circular dichroism (ICD) signals observed, in correspondence with the porphyrin Soret region, for aqueous solutions of achiral 5,10,15,20-tetrakis{p-[omega-methoxy poly(oxy-ethylene)]phenyl}porphyrin cobalt (II) (Co-P) and aromatic alpha-L-amino acids (Trp and Phe) give direct evidence for the coordination between the Co-P and amino acids. Considering that Co-P, besides the Co atom (one-fixation-point system), does not contain in the molecule active ligand groups and that no ICD signals have been observed in the case of Co-P/Ala, it has been concluded that hydrophobic interactions or stacking interactions between the aromatic rings of the porphyrin and those of Trp or Phe, acting as further amino acid (AA) fixation points, can strongly reduce the mobility of the chiral guest, thus permitting the generation of ICD signals. The effects of changes of both pH (in the range 2-9) and amino acid structure on the ICD phenomenon have also been investigated. In particular, the following have been observed: (i) strong ICD signals for all of the Co-P/N-acetyl amino acid aqueous solutions at pH 7, (ii) an unexpected ICD band with a bisignate form for the Co-P/Ala solution at pH 9 after long aging, and (iii) an opposite ICD signal when alpha-D-Phe and alpha-D-Trp enantiomers have been used. The data reported in this paper show how the binding mechanism between receptor and AAs changes by modulating properly the pH or the molecular structures and indicate that in these aqueous solutions the coordination Co-N is not the fundamental mechanism giving rise to the formation of the complexes and that the binding can be driven by hydrophobic interactions. These occurrences, through the analysis of the spectroscopic response (and, in particular, the form of the ICD band), can allow the recognition of AAs.
Collapse
Affiliation(s)
- Nicola Angelini
- CNR-Istituto per i Processi Chimico-Fisici, sez. Messina, Via La Farina 237, I-98123 Messina, Italy
| | | | | | | | | | | |
Collapse
|
25
|
Balaz M, Li BC, Jockusch S, Ellestad GA, Berova N. Tetraarylporphyrin as a Selective Molecular Cap for Non-Watson–Crick Guanine–Adenine Base-Pair Sequences. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200504431] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|