The thermochemical behavior of glycyl-L-histidine and β-alanyl-L-histidine peptides in (SDS + phosphate-buffered saline) micellar solution at pH = 7.4

Barannikov, V. P.; Smirnov, V. I.; Kurbatova, M. S.

doi:10.1016/j.molliq.2021.115766

Cited by 5 publications

(2 citation statements)

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“…It was also reported that not only the H atom (NH) and carbonyl oxygen atom of the pyrimidine ring, but also the N atom on pyrimidine ring and the H atom on the amino group of cytosine can form hydrogen bonding with catechin and formamide [23,26]. Furthermore, cytosine can also form hydrogen bonding with nitrosamine [27], water [28], hydrogen peroxide [29], uracil [30], guanine [31][32][33][34] and some drugs [35][36][37][38], such as 5-uorouracil, methimazole, ketoprofen and curcumin. In addition to hydrogen bonding, π•••π interactions were also found in cytosine-guanine, cytosine-curcumin-H 2 O, cytosine-uracil and cytosine-amino acids (arginine, aspartic/glutamic acid, aspartate/glutamate) systems [30,33,34,38,39].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, cytosine can also form hydrogen bonding with nitrosamine [27], water [28], hydrogen peroxide [29], uracil [30], guanine [31][32][33][34] and some drugs [35][36][37][38], such as 5-uorouracil, methimazole, ketoprofen and curcumin. In addition to hydrogen bonding, π•••π interactions were also found in cytosine-guanine, cytosine-curcumin-H 2 O, cytosine-uracil and cytosine-amino acids (arginine, aspartic/glutamic acid, aspartate/glutamate) systems [30,33,34,38,39].…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Theoretical Study on the Hydrogen Bonding between Ascorbic Acid and Cytosine

Li,

Yang,

Wang

et al. 2023

Preprint

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The intermolecular interactions of DNA/RNA with drugs exhibit important applications in human health and drug design. We investigated the interaction between ascorbic acid (AA), a commonly used drug in clinic, and cytosine, an important base of nucleic acids in DNA/RNA, in aqueous solution by cyclic voltammetry (CV), 1H nuclear magnetic resonance (1H NMR), density functional theory (DFT), quantum theory of atoms in molecules (QTAIM), natural bond orbital (NBO) and independent gradient model based on Hirshfeld partition (IGMH). The CV and 1H NMR results revealed that the hydroxyl groups on enediol of AA interacted with cytosine, making the electro-oxidation of AA difficult to occur and the downfield shift of H atoms (CH) on cytosine ring. Quantum chemistry calculations further proved the existence of O-H···N, O-H···O, C-H···N, C-H···O and N-H···O hydrogen bonding in the mixed system. It was found that the H atoms (H9 and H11) on enediol of AA, the N atom (N31) and carbonyl oxygen atom (O32) on the cytosine ring were the main action sites, for which H11 and N31 are more prone to be interacted with than H9 and O32.

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