Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Andrea L. Millen"'
Publikováno v:
The Journal of Physical Chemistry B. 114:4373-4382
Previous computational work suggests that isolated C8-phenoxyl-2'-deoxyguanosine nucleoside adducts preferentially adopt a syn orientation about the glycosidic bond, which is the first step in the mechanism by which many bulky C8 adducts exert their
Autor:
Lex Navarro-Whyte, Richard A. Manderville, Andrea L. Millen, Robert J. Paugh, Katherine M. Schlitt, Stacey D. Wetmore, Kewen M. Sun
Publikováno v:
The Journal of Organic Chemistry. 74:5793-5802
Direct addition of aryl radical species to the C(8)-site of 2'-deoxyguanosine (dG) affords C(8)-aryl-dG adducts that are produced by carcinogenic arylhydrazines, polycyclic aromatic hydrocarbons (PAHs), and certain phenolic toxins. A common property
Autor:
Stacey D. Wetmore, Andrea L. Millen
Publikováno v:
Canadian Journal of Chemistry. 87:850-863
Density functional theory was used to study the glycosidic bond cleavage in deoxynucleotides with the main goal to determine the effects of the nucleobase, hydrogen bonding with the nucleobase, and the (bulk) environment on the reaction energetics. S
Publikováno v:
The Journal of Physical Chemistry B. 112:12526-12536
The structural and binding properties of the natural and x- and y-pyrimidines were compared using computational methods. Our calculations show that although the x-pyrimidines favor different orientations about the glycosidic bond compared to the natu
Computational and Experimental Evidence for the Structural Preference of Phenolic C-8 Purine Adducts
Autor:
Kewen M. Sun, Andrea L. Millen, Richard A. Manderville, Stacey D. Wetmore, Christopher K. McLaughlin
Publikováno v:
The Journal of Physical Chemistry A. 112:3742-3753
The structural and spectral properties of (ortho and para) C8-aryl-purine adducts formed from carbon attachment by phenolic toxins were investigated through DFT calculations and UV-vis absorbance and emission studies. The global minima of both the de
Publikováno v:
The Journal of Physical Chemistry B. 111:3800-3812
Density functional theory was used to study the thermodynamics and kinetics for the glycosidic bond cleavage in deoxyuridine. Two reaction pathways were characterized for the unimolecular decomposition in vacuo. However, these processes are associate
Publikováno v:
Chemical Physics Letters. 428:157-166
MP2 stacking interactions between nitrosubstituted rings (3-nitropyrrole, 5-nitroindole, 4-nitropyrazole, 4-nitroimidazole), the corresponding unsubstituted rings and natural nucleobases were investigated. Although the enhancement in stacking provide
Publikováno v:
Future medicinal chemistry. 4(15)
Bulky DNA adducts are formed through the covalent attachment of aryl groups to the DNA nucleobases. Many of these adducts are known to possess conformational heterogeneity, which is responsible for the variety of mutagenic outcomes associated with th
Fluorescent C-linked C8-aryl-guanine probe for distinguishing syn from anti structures in duplex DNA
Autor:
Andrea L. Millen, Katie A. Wilson, Richard A. Manderville, Katherine M. Schlitt, Alireza Omumi, Stacey D. Wetmore
Publikováno v:
Chemical research in toxicology. 25(6)
The synthesis and optical properties of the carbon (C)-linked C(8)-(2"-benzo[b]thienyl)-2'-deoxyguanosine ((Bth)dG), which acts as a fluorescent reporter of syn versus anti glycosidic conformations in duplex DNA, are described. In the syn-conformatio
Autor:
Andrea L. Millen, Breanne L. Kamenz, Fern M. V. Leavens, Richard A. Manderville, Stacey D. Wetmore
Publikováno v:
The journal of physical chemistry. B. 115(44)
M06-2X/6-31G(d,p) is used to calculate the structure of all natural deoxydinucleoside monophosphates with G in the 5' or 3' position, the anti or syn conformation, and each natural (A, C, G, T) base in the corresponding flanking position. When the or