Distance measurements between paramagnetic ligands bound to parallel stranded guanine quadruplexes
Literature Information
V. A. Szalai
Aside from a double helix, deoxyribonucleic acid (DNA) folds into non-canonical structures, one of which is the guanine quadruplex. Cationic porphyrins bind guanine quadruplexes, but the effects of ligand binding on the structure of guanine quadruplexes with more than four contiguous guanine quartets remains to be fully elucidated. Double electron-electron resonance (DEER) spectroscopy conducted at 9.5 GHz (X-band) using broadband, shaped inversion pulses was used to measure the distances between cationic copper porphyrins bound to model parallel-stranded guanine quadruplexes with increasing numbers of guanine quartets. A single Gaussian component was found to best model the time domain datasets, characteristic of a 2 : 1 binding stoichiometry between the porphyrins and each quadruplex. The measured Cu2+–Cu2+ distances were found to be linearly proportional with the number of guanines. Rather unexpectedly, the ligand end-stacking distance was found to monotonically decreases the overall quadruplex length was extended, suggesting a conformational change in the quadruplex secondary structure dependent upon the number of successive guanine quartets.
Related Literature
Charge transport in organic donor–acceptor mixed-stack crystals: the role of nonlocal electron–phonon couplings
Lingyun Zhu, Hua Geng, Yuanping Yi, Zhixiang Wei
DOI: 10.1039/C6CP07417K
A tailored multi-frequency EPR approach to accurately determine the magnetic resonance parameters of dynamic nuclear polarization agents: application to AMUPol
P. Gast, D. Mance, E. Zurlo, M. Baldus, M. Huber
DOI: 10.1039/C6CP05864G
Ionic liquids and deep eutectic solvents for lignocellulosic biomass fractionation
Dannie J. G. P. van Osch, Laura J. B. M. Kollau, Sari Asikainen, Marisa A. A. Rocha
DOI: 10.1039/C6CP07499E
WO3/W:BiVO4/BiVO4 graded photoabsorber electrode for enhanced photoelectrocatalytic solar light driven water oxidation
Junghyun Choi, Pitchaimuthu Sudhagar, Joo Hyun Kim, Jiseok Kwon, Jeonghyun Kim, Chiaki Terashima, Akira Fujishima, Taeseup Song, Ungyu Paik
DOI: 10.1039/C6CP08199A
Coarse-grained molecular dynamics study on the self-assembly of Gemini surfactants: the effect of spacer length
Xiaoli Sun
DOI: 10.1039/C6CP07690D
Cobalt disulfide/graphite foam composite films as self-standing electrocatalytic electrodes for overall water splitting
Yue Tong, Xiaowen Yu, Gaoquan Shi
DOI: 10.1039/C6CP08176B
Ten-gram scale SiC@SiO2 nanowires: high-yield synthesis towards industrialization, in situ growth mechanism and their peculiar photoluminescence and electromagnetic wave absorption properties
Z. J. Li, H. Y. Yu, G. Y. Song, J. Zhao, H. Zhang, M. Zhang, A. L. Meng, Q. D. Li
DOI: 10.1039/C6CP07457J
Effects of the Hofmeister series of sodium salts on the solvent properties of water
L. A. Ferreira, V. N. Uversky, B. Y. Zaslavsky
DOI: 10.1039/C6CP08214A
Role of polar side chains in Li+ coordination and transport properties of polyoxetane-based polymer electrolytes
Ryansu Sai, Kazuhide Ueno, Kenta Fujii, Yohei Nakano, Naho Shigaki, Hiromori Tsutsumi
DOI: 10.1039/C6CP08386B
You might also like
What precautions should be taken when handling 4-(2-Furylmethyl)thiomorpholine 1,1-dioxide (CAS: 79206-94-3)?
When handling 4-(2-Furylmethyl)thiomorpholine 1,1-dioxide (CAS: 79206-94-3), it ...
What precautions should be taken when handling 4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide (CAS: 71320-77-9)?
When handling 4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide (CAS: 71320-77-9), it...
How should waste containing 2-[2-(2-Methoxyethoxy)ethoxy]ethyl 4-methylbenzenesulfonate (CAS: 62921-74-8) be handled?
Waste containing this compound (CAS: 62921-74-8) should be handled according to ...
How should waste containing (S)-Methyl 2-amino-3-cyclohexylpropanoate be handled?
Waste containing (S)-Methyl 2-amino-3-cyclohexylpropanoate should be collected i...
How is 5-({4-[(2S,4R)-4-Hydroxy-2-methyltetrahydro-2H-pyran-4-yl]-2-thienyl}sulfanyl)-1-methyl-1,3-dihydro-2H-indol-2-one (CAS: 166882-70-8) typically synthesized?
This compound can be synthesized using a multi-step process involving the conjug...
Are there alternatives to (2E)-3-(3,4-Dichlorophenyl)acrylic acid (CAS: 7312-27-8) in synthesis?
There are several alternatives to (2E)-3-(3,4-Dichlorophenyl)acrylic acid in syn...
How should Ethyl 6-(2-nitrophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 925437-84-9) be stored?
Ethyl 6-(2-nitrophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 925437-84...
How should waste containing 2-(1,3-Thiazol-2-yl)ethanamine (CAS: 18453-07-1) be handled?
Waste containing 2-(1,3-Thiazol-2-yl)ethanamine (CAS: 18453-07-1) should be coll...
How is Methyl 5-iodo-2-methylbenzoate (CAS: 103440-54-6) typically synthesized?
Methyl 5-iodo-2-methylbenzoate can be synthesized through the iodination of meth...
How is 5-Chloro[1,2,4]triazolo[1,5-a]pyridine (CAS: 1427399-34-5) typically synthesized?
5-Chloro[1,2,4]triazolo[1,5-a]pyridine is commonly synthesized via the condensat...
Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.














