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Deamination feature...
Deamination features of 5-hydroxymethylcytosine, a radical and enzymatic DNA oxidation product
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Grand, A. (författare)
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Jorge, N. (författare)
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Morell, C. (författare)
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Cadet, J. (författare)
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- Eriksson, Leif A, 1964 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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(creator_code:org_t)
- 2014-05-27
- 2014
- Engelska.
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Ingår i: Journal of Molecular Modeling. - : Springer Science and Business Media LLC. - 1610-2940 .- 0948-5023. ; 20:6
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The 5-methylcytosine derivative 5-hydroxymethylcytosine (5hmCyt), which is generated via enzymatic oxidation, is sometimes referred to as the sixth nucleobase due to its widespread presence in the DNA of brain and embryonic stem cells. In this study, we used density functional based methods and reactivity indices from conceptual DFT to explore the mechanism and key features of the hydrolytic deamination of 5hmCyt. The data obtained are used to compare and contrast this deamination reaction with those of other cytosine derivatives. The deamination process for 5hmCyt is similar to the corresponding processes for other unsaturated derivatives in that the amino form is the reactive one and water addition is the rate-limiting step. However, several differences due to the rotameric asymmetry of the current system are also noted.
Ämnesord
- NATURVETENSKAP -- Biologi -- Biofysik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biophysics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Nyckelord
- 5-Hydroxymethylcytosine
- Radical oxidation
- Deamination
- Enzymatic DNA oxidation
- Mutation
- DENSITY-FUNCTIONAL-APPROACH
- MOLECULAR-ORBITAL METHODS
- FRONTIER-ELECTRON THEORY
- GAUSSIAN-BASIS SETS
- CHEMICAL-REACTIVITY
- HYDROLYTIC DEAMINATION
- PHOTOSENSITIZED OXIDATION
- ELECTROPHILICITY
- INDEX
- ABSOLUTE HARDNESS
- WAVE-FUNCTIONS
- Biochemistry & Molecular Biology
- Biophysics
- Chemistry
- Computer Science
- Interdisciplinary Applications
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