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Halogen-bonded guanine base pairs, quartets and ribbons

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Halogen-bonded guanine base pairs, quartets and ribbons. / Thornton, Nicholas J.; van Mourik, Tanja.

In: International Journal of Molecular Sciences, Vol. 21, No. 18, 6571, 08.09.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

Thornton, NJ & van Mourik, T 2020, 'Halogen-bonded guanine base pairs, quartets and ribbons', International Journal of Molecular Sciences, vol. 21, no. 18, 6571. https://doi.org/10.3390/ijms21186571

APA

Thornton, N. J., & van Mourik, T. (2020). Halogen-bonded guanine base pairs, quartets and ribbons. International Journal of Molecular Sciences, 21(18), [6571]. https://doi.org/10.3390/ijms21186571

Vancouver

Thornton NJ, van Mourik T. Halogen-bonded guanine base pairs, quartets and ribbons. International Journal of Molecular Sciences. 2020 Sep 8;21(18). 6571. https://doi.org/10.3390/ijms21186571

Author

Thornton, Nicholas J. ; van Mourik, Tanja. / Halogen-bonded guanine base pairs, quartets and ribbons. In: International Journal of Molecular Sciences. 2020 ; Vol. 21, No. 18.

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@article{eec75ed123a6496799f5aae92ae595f4,
title = "Halogen-bonded guanine base pairs, quartets and ribbons",
abstract = "Halogen bonding is studied in different structures consisting of halogenated guanine DNA bases, including the Hoogsteen guanine–guanine base pair, two different types of guanine ribbons (R-I and R-II) consisting of two or three monomers, and guanine quartets. In the halogenated base pairs (except the Cl-base pair, which has a very non-planar structure with no halogen bonds) and R-I ribbons (except the At trimer), the potential N-X•••O interaction is sacrificed to optimise the N-X•••N halogen bond. In the At trimer, the astatines originally bonded to N1 in the halogen bond donating guanines have moved to the adjacent O6 atom, enabling O-At•••N, N-At•••O, and N-At•••At halogen bonds. The brominated and chlorinated R-II trimers contain two N-X•••N and two N-X•••O halogen bonds, whereas in the iodinated and astatinated trimers, one of the N-X•••N halogen bonds is lost. The corresponding R-II dimers keep the same halogen bond patterns. The G-quartets display a rich diversity of symmetries and halogen bond patterns, including N-X•••N, N-X•••O, N-X•••X, O-X•••X, and O-X•••O halogen bonds (the latter two facilitated by the transfer of halogens from N1 to O6). In general, halogenation decreases the stability of the structures. However, the stability increases with the increasing atomic number of the halogen, and the At-doped R-I trimer and the three most stable At-doped quartets are more stable than their hydrogenated counterparts. Significant deviations from linearity are found for some of the halogen bonds (with halogen bond angles around 150°).",
keywords = "Guanine-guanine base pair, Guanine ribbons, Guanine quartet, Density functional theory, Dispersion correction",
author = "Thornton, {Nicholas J.} and {van Mourik}, Tanja",
year = "2020",
month = sep,
day = "8",
doi = "10.3390/ijms21186571",
language = "English",
volume = "21",
journal = "International Journal of Molecular Sciences",
issn = "1422-0067",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "18",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Halogen-bonded guanine base pairs, quartets and ribbons

AU - Thornton, Nicholas J.

AU - van Mourik, Tanja

PY - 2020/9/8

Y1 - 2020/9/8

N2 - Halogen bonding is studied in different structures consisting of halogenated guanine DNA bases, including the Hoogsteen guanine–guanine base pair, two different types of guanine ribbons (R-I and R-II) consisting of two or three monomers, and guanine quartets. In the halogenated base pairs (except the Cl-base pair, which has a very non-planar structure with no halogen bonds) and R-I ribbons (except the At trimer), the potential N-X•••O interaction is sacrificed to optimise the N-X•••N halogen bond. In the At trimer, the astatines originally bonded to N1 in the halogen bond donating guanines have moved to the adjacent O6 atom, enabling O-At•••N, N-At•••O, and N-At•••At halogen bonds. The brominated and chlorinated R-II trimers contain two N-X•••N and two N-X•••O halogen bonds, whereas in the iodinated and astatinated trimers, one of the N-X•••N halogen bonds is lost. The corresponding R-II dimers keep the same halogen bond patterns. The G-quartets display a rich diversity of symmetries and halogen bond patterns, including N-X•••N, N-X•••O, N-X•••X, O-X•••X, and O-X•••O halogen bonds (the latter two facilitated by the transfer of halogens from N1 to O6). In general, halogenation decreases the stability of the structures. However, the stability increases with the increasing atomic number of the halogen, and the At-doped R-I trimer and the three most stable At-doped quartets are more stable than their hydrogenated counterparts. Significant deviations from linearity are found for some of the halogen bonds (with halogen bond angles around 150°).

AB - Halogen bonding is studied in different structures consisting of halogenated guanine DNA bases, including the Hoogsteen guanine–guanine base pair, two different types of guanine ribbons (R-I and R-II) consisting of two or three monomers, and guanine quartets. In the halogenated base pairs (except the Cl-base pair, which has a very non-planar structure with no halogen bonds) and R-I ribbons (except the At trimer), the potential N-X•••O interaction is sacrificed to optimise the N-X•••N halogen bond. In the At trimer, the astatines originally bonded to N1 in the halogen bond donating guanines have moved to the adjacent O6 atom, enabling O-At•••N, N-At•••O, and N-At•••At halogen bonds. The brominated and chlorinated R-II trimers contain two N-X•••N and two N-X•••O halogen bonds, whereas in the iodinated and astatinated trimers, one of the N-X•••N halogen bonds is lost. The corresponding R-II dimers keep the same halogen bond patterns. The G-quartets display a rich diversity of symmetries and halogen bond patterns, including N-X•••N, N-X•••O, N-X•••X, O-X•••X, and O-X•••O halogen bonds (the latter two facilitated by the transfer of halogens from N1 to O6). In general, halogenation decreases the stability of the structures. However, the stability increases with the increasing atomic number of the halogen, and the At-doped R-I trimer and the three most stable At-doped quartets are more stable than their hydrogenated counterparts. Significant deviations from linearity are found for some of the halogen bonds (with halogen bond angles around 150°).

KW - Guanine-guanine base pair

KW - Guanine ribbons

KW - Guanine quartet

KW - Density functional theory

KW - Dispersion correction

U2 - 10.3390/ijms21186571

DO - 10.3390/ijms21186571

M3 - Article

VL - 21

JO - International Journal of Molecular Sciences

JF - International Journal of Molecular Sciences

SN - 1422-0067

IS - 18

M1 - 6571

ER -

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