Sharif Digital Repository

Comparison of gas phase intrinsic properties of cytosine and thymine nucleobases with their O-alkyl adducts: Different hydrogen bonding preferences for thymine versus O-alkyl thymine

Author

Aliakbar Tehrani, Z.

Pub. Year

2013

Subjects

Alkylation damage. / Atom in molecule analysis. / Demethylation. / O4-methylthymine. / Tautomer. / Cytosine derivative. / DNA glycosyltransferase. / Nucleic acid base. / Pyrimidine derivative. / Thymine derivative. / Acidity. / Comparative study. / Density functional theory. / Gas. / Hydrogen bond. / Molecule. / Priority journal. / Tautomerization. / Cytosine. / DNA Adducts. / DNA Methylation. / Gases. / Hydrogen Bonding. / Models, Chemical. / Protons. / Quantum Theory. / Stereoisomerism. / Thermodynamics. / Thymine. / Eukaryota. / Prokaryota.

Conformational aspects of glutathione tripeptide: Electron density topological & natural bond orbital analyses

Author

Aliakbar Tehrani, Z.

Pub. Year

2013

Subjects

AIM theory. / Glutathione tripeptide. / Intramolecular hydrogen bond. / Ramachandran map.

Influence of metal complexation on acidity of cytosine nucleosides: Part I, Li +, Na + and K + cation

Author

Aliakbar Tehrani, Z.

Pub. Year

2012

Subjects

Alkali metal ion coordination. / Cytosine nucleosides. / Gas-phase acidity. / NBO analysis. / Sugar puckering mode. / Cytosine nucleosides. / DFT. / Gas-phase acidities. / Metal-ion coordination. / NBO analysis. / Biomolecules. / Deprotonation. / Electronic properties. / Hydrogen bonds. / Metal ions. / Positive ions. / Acidity. / Alkali metal. / Cation. / Complexation. / Nitrogen compound. / Sugar.

Conformational behavior and potential energy profile of gaseous histidine

Author

Aliakbar Tehrani, Z.

Pub. Year

2010

Subjects

Conformer. / DFT. / Histidine. / Potential energy profile. / Ramachandran backbone potential energy surfaces.

Computational investigation of thermochemical properties of non-natural C-nucloebases: Different hydrogen-bonding preferences for non-natural Watson-Crick base pairs

Author

Aliakbar Tehrani, Z.

Pub. Year

2013

Subjects

AIM analysis. / Hydorgen bond. / NBO analysis. / Non-natural C-nucloebases. / Watson-Crick nucleobases.

DFT study of the interaction of cytidine and 2′-deoxycytidine with Li+, Na+, and K+: effects of metal cationization on sugar puckering and stability of the N-glycosidic bond

Author

Aliakbar Tehrani, Z.

Pub. Year

2009

Subjects

2′-Deoxyribonucleoside. / Metal complexation. / N-Glycosidic bond. / Ribonucleoside. / Atomic numbers. / Basis sets. / Binding strengths. / Bond distances. / Computational studies. / Conformational behaviors. / Coordination modes. / Cytidine. / Density functional theory calculations. / DFT study. / Gas-phase. / Glycosyl. / Linear correlations. / Metal bindings. / Metal cationization. / Metal cations. / Metal complexation. / Metal ion. / Phase angles. / Positive charges. / Pseudorotation. / Sugar ring conformations. / Sugar rings. / Sugar units. / Torsion angles. / Atoms. / Conformations. / Coordination reactions. / Density functional theory. / Metal ions. / Nucleic acids. / Nucleotides. / Probability density function. / Sugar (sucrose) / Sugars. / Trace analysis. / Metals. / Nucleoside. / Potassium. / Chemical bond. / Chemical interaction. / Conformation. / Mathematical computing. / Metal binding. / Molecular stability. / Nucleic acid analysis. / Priority journal. / Cations. / Computers, Molecular. / Deoxycytidine. / Glycosylation. / Lithium. / Molecular Structure. / Sodium.

General noise considerations of amplified photons in lightwave systems with optically bistable elements

Author

Abediasl, H.

Pub. Year

2010

Subjects

Bistable elements. / General noise. / Lightwave systems. / Noise analysis. / Light amplifiers. / Noise abatement. / Signal to noise ratio.