Ab initio calculations on the thermodynamic properties of azaborospiropentanes.

abstract：:We here report a combined quantum mechanical/molecular mechanical (QM/MM) molecular dynamics (MD) study on the binding interactions between the α(V)β₃ integrin and eight cyclic arginine-glycine-aspartate (RGD) containing peptides. The initial conformation of each peptide within the binding site of the integrin was det...

journal_title：Journal of molecular modeling

authors： Xiang M,Lin Y,He G,Chen L,Yang M,Yang S,Mo Y

更新日期：2012-11-01 00:00:00

abstract：:Dirithromycin is a macrolide antibiotic derived from erythromycin A. Dirithromycin is synthesized by the condensation of 9(S)-erythromycylamine with 2-(2-methoxyethoxy)-acetaldehyde. To gain insight into the synthesis, the condensation mechanism has been analyzed computationally by the AM1 method in the gas phase. Fir...

journal_title：Journal of molecular modeling

authors： Duran D,Aviyente V,Baysal C

更新日期：2004-04-01 00:00:00

abstract：:We report a study of the structure of (+)-catechin, which belongs to the family of the flavan-3-ols-one of the five most widely distributed phenolic groups. The biological activities and pharmaceutical utility of these compounds are related to antioxidant activity due to their ability to scavenge free radicals. A brea...

journal_title：Journal of molecular modeling

authors： Bentz EN,Pomilio AB,Lobayan RM

更新日期：2014-02-01 00:00:00

abstract：:With the help of quantum mechanical calculations, we have examined the series of central system X(ML)(3) (+)(X = O, S, Se; M = Au, Ag, Cu). Using a scalar-relativistic density functional approach, we studied the geometry structures, Mulliken populations and charges of the systems. Structure parameters of the experimen...

journal_title：Journal of molecular modeling

authors： Fang H,Wang SG

更新日期：2007-01-01 00:00:00

abstract：:The formation of silaspiropentane from addition of singlet silacyclopropylidene 1 and silacyclopropylidenoid 8 to ethylene has been investigated separately at the B3LYP, X3LYP, WB97XD, and M05-2X theories using the 6-31+G(d,p) basis set. The silacycloproylidenoid addition follows a stepwise route. In contrast, a conce...

journal_title：Journal of molecular modeling

authors： Yildiz CB,Azizoglu A

更新日期：2016-07-01 00:00:00

abstract：:In advanced oxidation processes (AOPs), the detailed degradation mechanisms of a typical explosive of 2,4-dinitrotoluene (DNT) can be investigated by the density function theory (DFT) method at the SMD/M062X/6-311+G(d) level. Several possible degradation routes for DNT were explored in the current study. The results s...

journal_title：Journal of molecular modeling

authors： Zhou Y,Yang Z,Yang H,Zhang C,Liu X

更新日期：2017-04-01 00:00:00

abstract：:In erythrocytes, actively multiplying Plasmodium falciparum parasites exhibit a unique signature of virulence associated histone modifications, thereby epigenetically regulating the expression of the majority of genes. Histone acetylation is one such modification, effectuated and maintained by the dynamic interplay of...

journal_title：Journal of molecular modeling

authors： Kumar A,Dhar SK,Subbarao N

更新日期：2018-08-14 00:00:00

abstract：:Molecular modeling and docking studies along with three-dimensional quantitative structure relationships (3D-QSAR) studies have been used to determine the correct binding mode of glycogen synthase kinase 3beta (GSK-3beta) inhibitors. The approaches of comparative molecular field analysis (CoMFA) and comparative molecu...

journal_title：Journal of molecular modeling

authors： Kim KH,Gaisina I,Gallier F,Holzle D,Blond SY,Mesecar A,Kozikowski AP

更新日期：2009-12-01 00:00:00

abstract：:Periplasmic binding proteins are the initial receptors for the transport of various substrates over the inner membrane of gram-negative bacteria. The binding proteins are composed of two domains, and the substrate is entrapped between these domains. For several of the binding proteins it has been established that a cl...

journal_title：Journal of molecular modeling

authors： Siuda I,Thøgersen L

更新日期：2013-11-01 00:00:00

abstract：:The mechanism of the copper(I)-catalyzed cyclopropanation reaction for methyl diazoacetate with both (Z)- and (E)-but-2-ene stereoisomers has been studied using the 6-311++G(d,p) basis set by means of M06-2X and O3LYP functionals. According to both methods, the rate-limiting step is the formation of a copper-carbene i...

journal_title：Journal of molecular modeling

authors： Angulo B,Herrerías CI,Hormigón Z,Mayoral JA,Salvatella L

更新日期：2018-07-05 00:00:00

abstract：:In this study, the newly synthesized non-centrosymmetric, 4-dimethylamino-3'-isothiocyanatochalcone (PKA) compound was presented. This compound belongs to the chalcone group, and its main purpose is to be used in biomedical imaging as a fluorescence dye. For this reason, the linear and nonlinear properties in solvents...

journal_title：Journal of molecular modeling

authors： Krawczyk P,Pietrzak M,Janek T,Jędrzejewska B,Cysewski P

更新日期：2016-06-01 00:00:00

abstract：:This work focuses on the role of the dynamic hydrogen bonds (HB) formed in an aqueous solution of aspirin using molecular dynamics simulation. The statistics reveal the existence of internal HB that inhibit the rotational movements of the acetyl and the carboxylic acid groups, forcing the molecule to adopt a closed co...

journal_title：Journal of molecular modeling

authors： Donnamaria MC,de Xammar Oro JR

更新日期：2011-10-01 00:00:00

abstract：:Selective A(2B) receptor antagonists and agonists may play a role in important pathologies such as gastrointestinal, neurological (i.e., Alzheimer disease and dementia) and hypersensitive disorders (i.e., asthma), diabetes, atherosclerosis, restenosis and cancer. Hence, it is regarded as a good target for the developm...

journal_title：Journal of molecular modeling

authors： Mansourian M,Madadkar-Sobhani A,Mahnam K,Fassihi A,Saghaie L

更新日期：2012-09-01 00:00:00

abstract：:We have systematically explored and investigated the geometrical structures, stability, growth pattern, bonding character, and potential energy surface (PES) of the possible isomers of each cluster for planar B(n)P (n = 1 ∼ 7) at the CCSD(T)/6-311+;G(d)//B3LYP/6-311+G(d) level. A large number of planar structures for ...

journal_title：Journal of molecular modeling

authors： Shi R,Shao J,Wang C,Zhu X,Lu X

更新日期：2011-05-01 00:00:00

abstract：:Structure-olfactive threshold relationships for 40 pyrazine derivatives have been studied by multivariate statistical analysis. Variable descriptors used to describe the molecules studied were obtained using molecular-mechanics software. A correlation coefficient of 0.82 was obtained when all the molecules were includ...

journal_title：Journal of molecular modeling

authors： Zakarya D,Farhaoui L,Hamidi M,Bouachrine M

更新日期：2006-09-01 00:00:00

abstract：:A series of oligo(thienylenevinylene) derivatives with 1,4-dihydropyrrolo[3,2-b]pyrrole as core has been investigated at the PBE0/6-31G(d) and the TD-PBE0/6-31+G(d,p) levels to design materials with high performances such as broad absorption spectra and higher balance transfer property. The results show that position ...

journal_title：Journal of molecular modeling

authors： Tang S,Tang B,Liang D,Chen G,Jin R

更新日期：2013-09-01 00:00:00

abstract：:There is evidence that Tetracyclines are potentially useful drugs to treat prion disease, the fatal neurodegenerative disease in which cellular prion proteins change in conformation to become a disease-specific species (PrP(Sc)). Based on an in vitro anti-fibrillogenesis test, and using the peptide PrP106-126 in the p...

journal_title：Journal of molecular modeling

authors： Cosentino U,Pitea D,Moro G,Saracino GA,Caria P,Varì RM,Colombo L,Forloni G,Tagliavini F,Salmona M

更新日期：2008-10-01 00:00:00

abstract：:A mechanical molecular rotation model for liquid crystal (LC) systems is employed to evaluate phase transition temperature of fluorinated phenylbicyclohexane isomeric LC compounds. Results show that when a fluorine atom is substituted along the molecular long axis, an LC molecule acquires high rotational speed and its...

journal_title：Journal of molecular modeling

authors： Ma H,Li ZX,Shi DH,Liu YF

更新日期：2008-11-01 00:00:00

abstract：:The structures and intramolecular interactions of complexes (FeCNT-CO, FeCNT-NO, NiCNT-CO, and NiCNT-NO) formed by the Fe or Ni doped single-wall carbon nanotube (FeCNT or NiCNT) and gas CO or NO were studied using density functional theory, quantum theory of atom in molecule (QTAIM), and natural bond orbital methods....

journal_title：Journal of molecular modeling

authors： Zhang X,Gong X

更新日期：2015-09-01 00:00:00

abstract：:A molecular dynamics method was employed to study the binding energies associated with the cocrystallization (at selected crystal planes) of either 1,3,5-triamino-2,4,6-trinitro-benzene (TATB), 1,1-diamino-2,2-dinitroethylene, 3-nitro-1,2,4-triazol-5-one (TATB, FOX-7, and NTO, respectively, all of which are explosives...

journal_title：Journal of molecular modeling

authors： Song KP,Ren FD,Zhang SH,Shi WJ

更新日期：2016-10-01 00:00:00

abstract：:In this study, eight oxytocin (OT) antagonists were subjected to conformational analysis. By means of simulated annealing, 2,000 structures were generated to sample the conformational space. The preferred main-chain and side-chain dihedral angles, intramolecular H-bond interactions (types 1<--4 and 1<--3), and seconda...

journal_title：Journal of molecular modeling

authors： Jójárt B,Márki A

更新日期：2006-09-01 00:00:00

abstract：:Computational methods are rapidly gaining importance in the field of structural biology, mostly due to the explosive progress in genome sequencing projects and the large disparity between the number of sequences and the number of structures. There has been an exponential growth in the number of available protein seque...

journal_title：Journal of molecular modeling

authors： Saraswathi S,Fernández-Martínez JL,Kolinski A,Jernigan RL,Kloczkowski A

更新日期：2012-09-01 00:00:00

abstract：:Fruit softening is associated to cell wall modifications produced by a set of hydrolytic enzymes and proteins. Expansins are proteins with no catalytic activity, which have been associated with several processes during plant growth and development. A role for expansins has been proposed during softening of fruits, and...

journal_title：Journal of molecular modeling

authors： Gaete-Eastman C,Morales-Quintana L,Herrera R,Moya-León MA

更新日期：2015-05-01 00:00:00

abstract：:Although there are a multitude of aromaticity indexes, only a few have a widespread usage. All famous aromaticity indexes are limited: HOMA and FLU are reference-dependent; ELF is π-bond-dependent; PDI is structurally dependent and NICS is ring size dependent. These limitations stimulate the continuous search for bett...

journal_title：Journal of molecular modeling

authors： Firme CL,Araújo DM

更新日期：2017-09-01 00:00:00

abstract：:Thermodynamic integration (TI) molecular dynamics (MD) simulations for the binding of a pair of a reference ("ref") ligand and an analogous ("analog") ligand to either tagged (with six extra residues at the N-terminus) or untagged p38 kinase proteins were carried out in order to probe how the binding affinity is influ...

journal_title：Journal of molecular modeling

authors： Sun YC,Hsu WC,Hsu CJ,Chang CM,Cheng KH

更新日期：2015-11-01 00:00:00

abstract：:In this work, the effect of the external electric field (EF) on the drug delivery performance of peptide-based metal-organic framework (MPF) for 6-mercaptopurine (6-MP) drug is investigated by means of the molecular dynamics (MD) simulations. It is found that the strength interaction of drug molecule with MPF is decre...

journal_title：Journal of molecular modeling

authors： Shahabi M,Raissi H

更新日期：2019-09-06 00:00:00

abstract：:We propose a scheme to estimate hydrogen isotope effects on molecular polarizabilities. This approach combines the any-particle molecular orbital method, in which both electrons and H/D nuclei are described as quantum waves, with the auxiliary density perturbation theory, to calculate analytically the polarizability t...

journal_title：Journal of molecular modeling

authors： Moncada F,Flores-Moreno R,Reyes A

更新日期：2017-03-01 00:00:00

abstract：:The interaction between tetramethylcucurbit[6]uril (host) and 5,5'-dimethyl-2,2'-bipyridyl hydrochloride (guest) was studied by 1H NMR, X-ray crystallography, electronic absorption spectroscopy, fluorescence emission spectra and quantum chemistry calculations. This experimental-computational study that indicated the h...

journal_title：Journal of molecular modeling

authors： Cong H,Zhao YJ,Xue SF,Tao Z,Zhu QJ

更新日期：2007-12-01 00:00:00

abstract：:The reactivity of the 5-arylidenerhodanine and 5-arylideneisorhodanine derivatives in reactions with dimethyl maleate was computationally studied at the DFT(M06-2X)/6-311+G(d,p) theory level. Eight stereoisomers of the reaction products were considered. The effect of the solvent was taken into account by means of the ...

journal_title：Journal of molecular modeling

authors： Tejchman W,Michalski M,Zborowski KK,Berski S

更新日期：2019-06-14 00:00:00

abstract：:1,3-Dimethylimidazolium dimethylphosphate ([C1mim][DMP]) was observed experimentally to be able to eliminate the atmospheric azeotropic point of acetone and methanol, which is an important azeotrope generally encountered in furfural production and the Fischer-Tropsch process. Here, we employed ab initio calculation to...

journal_title：Journal of molecular modeling

authors： Yu G,Liu X,Zhang X,Chen X,Liu Z,Abdeltawab AA

更新日期：2017-03-01 00:00:00