Tetraplex structure formation in the thrombin-binding DNA aptamer by metal cations measured by vibrational spectroscopy.

abstract：:Molecular dynamics (MD) studies have been carried out on the Hoogsteen hydrogen bonded parallel and the reverse Hoogsteen hydrogen bonded antiparallel C.G*G triplexes. Earlier, the molecular mechanics studies had shown that the parallel structure was energetically more favourable than the antiparallel structure. To ch...

journal_title：Journal of biomolecular structure & dynamics

authors： Kiran MR,Bansal M

更新日期：1998-12-01 00:00:00

abstract：:The aim of this study was to attempt to determine the extent to which the chemical shifts of the nonexchangeable base protons of a DNA helix depend upon the base sequence. We measured the proton NMR spectra of twelve decadeoxynucleotides in order to carry out a "statistical" treatment. In the helices, the chemical shi...

journal_title：Journal of biomolecular structure & dynamics

authors： Shindo H,Okhubo S,Matsumoto U,Giessner-Prettre C,Zon G

更新日期：1988-02-01 00:00:00

abstract：:In this paper, a general method is developed to study site-specific interactions in DNA-protein complexes using heteronuclear NMR spectroscopy and molecular modeling. This method involves two steps: (a) homonuclear 1H NMR and molecular modeling are used to develop a low resolution model and (b) 15N7-guanosine containi...

journal_title：Journal of biomolecular structure & dynamics

authors： Edwards CA,Tung CS,Silks LA,Gatewood JM,Fee JA,Mariappan SV

更新日期：1998-08-01 00:00:00

abstract：:It is well established that GAA/TTC base triplet expansion is the cause of degenerative disorder in Freidreich's Ataxia. It is also known that these repeat sequences fold back to form the unusual intramolecular triple helix structures in DNA of the type Pyrimidine *Purine *Pyrimidine or Purine *Purine*Pyrimidine. In t...

journal_title：Journal of biomolecular structure & dynamics

authors： Jain A,Rajeswari MR,Ahmed F

更新日期：2002-02-01 00:00:00

abstract：:Low sampling efficiency in conformational space is the well-known problem for conventional molecular dynamics. It greatly increases the difficulty for molecules to find the transition path to native state, and costs amount of CPU time. To accelerate the sampling, in this paper, we re-couple the critical degrees of fre...

journal_title：Journal of biomolecular structure & dynamics

authors： Chen C,Huang Y,Xiao Y

更新日期：2013-01-01 00:00:00

abstract：:Local conformational changes and global unfolding pathways of wildtype xyn11A recombinant and its mutated structures were studied through a series of atomistic molecular dynamics (MD) simulations, along with enzyme activity assays at three incubation temperatures to investigate the effects of mutations at three differ...

journal_title：Journal of biomolecular structure & dynamics

authors： Sutthibutpong T,Rattanarojpong T,Khunrae P

更新日期：2018-11-01 00:00:00

abstract：:Multidrug efflux mechanism is the main cause of intrinsic drug resistance in bacteria. Mycobacterium multidrug resistant (MMR) protein belongs to small multidrug resistant family proteins (SMR), causing multidrug resistance to proton (H(+))-linked lipophilic cationic drug efflux across the cell membrane. In the presen...

journal_title：Journal of biomolecular structure & dynamics

authors： Malkhed V,Mustyala KK,Potlapally SR,Vuruputuri U

更新日期：2014-12-01 00:00:00

abstract：:Supercoiling causes global twist of DNA structure and the supercoiled state has wide influence on conformational transition. A statistical mechanical approach was made for prediction of the transition probability to non-B DNA structures under torsional stress. A conditional partition function was defined as the sum ov...

journal_title：Journal of biomolecular structure & dynamics

authors： Katsura S,Makishima F,Nishimura H

更新日期：1993-02-01 00:00:00

abstract：:P-glycoprotein (P-gp) is a main factor contributing to multidrug resistance. The effect of this transporter protein on limiting the effectiveness of chemotherapy has been shown by various studies. In a previous report, we synthesized some 14-dihydropyridine (DHP) derivatives as inhibitors of human P-gp. In the present...

journal_title：Journal of biomolecular structure & dynamics

authors： Shahraki O,Zargari F,Edraki N,Khoshneviszadeh M,Firuzi O,Miri R

更新日期：2018-01-01 00:00:00

abstract：:A potential anti-Human Immunodeficiency Virus (HIV) agent with novel mode of action is urgently needed to fight against drug resistance HIV. The HIV capsid protein is important for both late and early stages of the viral replication cycle and emerged as a promising target for the developing of small molecule inhibitor...

journal_title：Journal of biomolecular structure & dynamics

authors： Bhole RP,Bonde CG,Bonde SC,Chikhale RV,Wavhale RD

更新日期：2021-02-01 00:00:00

abstract：:The algorithms of the analysis of R-looped DNA molecules from electron micrographs are presented. We propose a two-dimensional R-loop distribution map with abscissa and ordinate axes corresponding to the positions of the left and right ends of the loop respectively. A transcription analysis of the hybrid plasmid pSCV1...

journal_title：Journal of biomolecular structure & dynamics

authors： Golovanov EuI,Kalambet YuA,Auezova LJ,Alexandrov AA

更新日期：1986-06-01 00:00:00

abstract：:Unselective and reversible adsorption of ligands on DNA for a model of binding proposed by Zasedatelev, Gursky, and Volkenshtein is considered. In this model, the interaction between neighboring ligands located at the distance of i binding centers is characterized by the statistical weight ai. Each ligand covers L bin...

journal_title：Journal of biomolecular structure & dynamics

authors： Lando DY,Nechipurenko YD

更新日期：2008-10-01 00:00:00

abstract：:Beta-N-acetyl-D-glucosaminidase (NAGase, EC.3.2.1.52), which catalyzes the cleavage of N-acetylglucosamine polymers, is a composition of chitinase and cooperates with endo-chitinase and exo-chitinase to disintegrate chitin into N-acetylglucosamine (NAG). In this investigation, A NAGase from green crab (Scylla serrata)...

journal_title：Journal of biomolecular structure & dynamics

authors： Xie JJ,Chen CQ,Yan YW,Zhang JP,Lin JC,Wang Q,Zhou HT,Chen QX

更新日期：2009-02-01 00:00:00

abstract：:Nuclear quadrupole relaxation is a sensitive measure of electrolyte environments. We used the relaxation of 23Na to probe mobile ion-matrix interactions and the electrostatic structure of the polyelectrolyte extracellular matrix of cartilage. Specifically, we measured spin-lattice and spin-spin relaxation times of 23N...

journal_title：Journal of biomolecular structure & dynamics

authors： Dai H,McFarland EW

更新日期：1996-04-01 00:00:00

abstract：:Coumarin molecules have biological activities possessing lipid-controlling activity, anti-hepatitis C activity, anti-diabetic, anti-Parkinson activity, and anti-cancer activity. Here, we have presented an inclusive study on the interaction of 8-substituted-7-hydroxy coumarin derivatives (Umb-1/Umb-2) with α-1-glycopro...

journal_title：Journal of biomolecular structure & dynamics

authors： Yeggoni DP,Manidhar DM,Suresh Reddy C,Subramanyam R

更新日期：2016-09-01 00:00:00

abstract：:The assembly and maturation of viruses with icosahedral capsids must be coordinated with icosahedral symmetry. The icosahedral symmetry imposes also the restrictions on the cooperative specific interactions between genomic RNA/DNA and coat proteins that should be reflected in quasi-regular segmentation of viral genomi...

journal_title：Journal of biomolecular structure & dynamics

authors： Chechetkin VR,Lobzin VV

更新日期：2019-06-01 00:00:00

abstract：:Two 4-ns molecular dynamics simulations of calcium loaded calmodulin in solution have been performed, using both standard nonbonded cutoffs and Ewald summation to treat electrostatic interactions. Our simulation results are generally consistent with solution experimental studies of calmodulin structure and dynamics, i...

journal_title：Journal of biomolecular structure & dynamics

authors： Yang C,Jas GS,Kuczera K

更新日期：2001-10-01 00:00:00

abstract：:A novel ternary copper(II) complexes, - [Cu(py-phen)(asn)(NO3)(H2O)] (1) and [Cu(py-phen)(trp)(H2O)]NO3 (2)- (py-phen: pyrazino[2,3-f][1,10]phenanthroline, asn: asparagine, trp: tryptophan), have been synthesized and characterized by CHN analysis, ESI-MS, FTIR and single-crystal X-ray diffraction techniques. Interacti...

journal_title：Journal of biomolecular structure & dynamics

authors： İnci D,Aydın R,Vatan Ö,Zorlu Y

更新日期：2020-08-18 00:00:00

abstract：:Visible and near infrared magnetic circular dichroism (MCD) spectra of heme proteins and enzymes as well as those of a protein-free heme bound to 2-methylimidazole were recorded and compared at 4.2 K in unrelaxed metastable and relaxed equilibrium heme stereochemistry. The relaxed and unrelaxed stereochemistries of a ...

journal_title：Journal of biomolecular structure & dynamics

authors： Sharonov YuA,Pismensky VF,Yarmola EG

更新日期：1989-08-01 00:00:00

abstract：:Seven new quinoline-based bioorganic compounds were prepared by solvent-free synthesis and characterized using spectral techniques. The binding of these compounds with human serum albumin (HSA) was investigated by multi-spectroscopic methods. The quenching of Trp fluorescence upon addition of these compounds to HSA co...

journal_title：Journal of biomolecular structure & dynamics

authors： Vennila KN,Elango KP

更新日期：2019-07-01 00:00:00

abstract：:A general method for generation of base-pairs in a curved DNA structure, for any prescribed values of helical parameters--unit rise (h), unit twist (theta), wedge roll (theta R) and wedge tilt (theta T), propeller twist (theta p) and displacement (D) is described. Its application for generation of uniform as well curv...

journal_title：Journal of biomolecular structure & dynamics

authors： Bhattacharya D,Bansal M

更新日期：1988-08-01 00:00:00

abstract：:Shape and dimension of the preferred nucleotide repeats in nucleic acids are found to depend on whether the sugar-phosphate linkage is of 2',5' or 3',5' type. It is shown that a nucleotide which is "compact" in 3',5' nucleic acids is rendered "extended" and vice versa for a given sugar pucker. It is interesting that t...

journal_title：Journal of biomolecular structure & dynamics

authors： Premraj BJ,Yathindra N

更新日期：1998-10-01 00:00:00

abstract：:Among the plant constituents of Clerodendrum colebrookianum Walp., acteoside, martinoside, and osmanthuside β6 interact with ROCK, a drug target for cancer. In this study, aglycone fragments of these plant constituents (caffeic acid, ferulic acid, and p-coumaric acid) along with the homopiperazine ring of fasudil (sta...

journal_title：Journal of biomolecular structure & dynamics

authors： Arya H,Yadav CS,Lin SY,Syed SB,Charles MRC,Kannadasan S,Hsieh HP,Singh SS,Gajurel PR,Coumar MS

更新日期：2020-08-01 00:00:00

abstract：:Based on the known structural model for reverse transcription initiation complex of the human immunodeficiency virus type 1 (HIV-1) MAL isolate, we attempted to predict a structural behavior of MAL-like templates (CRF01_AE, subtype G and CRF02_AG) within the initiation complex by in silico experiments. Switches from t...

journal_title：Journal of biomolecular structure & dynamics

authors： Kolomiets IN,Zarudnaya MI,Potyahaylo AL,Hovorun DM

更新日期：2015-01-01 00:00:00

abstract：:Glycation and oxidation induce structural alterations in the proteins in an interdependent manner with consequent pathological implications. The published literature presents wide range of modifications in conformational characteristics of proteins by glycation and oxidation; however, there is little data that could e...

journal_title：Journal of biomolecular structure & dynamics

authors： Islam S,Moinuddin,Mir AR,Raghav A,Habib S,Alam K,Ali A

更新日期：2018-08-01 00:00:00

abstract：:Monte Carlo computer simulations were performed on dilute aqueous solutions of thymine, cytosine, uracil, adenine, guanine, the dimethyl phosphate anion in the gauche-gauche conformation and a ribose and deoxyribose derivative. The aqueous hydration of each molecule was analysed in terms of quasi-component distributio...

journal_title：Journal of biomolecular structure & dynamics

authors： Beveridge DL,Maye PV,Jayaram B,Ravishanker G,Mezei M

更新日期：1984-10-01 00:00:00

abstract：:Using the refined molecular structure of the Gene 5 DNA Binding Protein (G5BP) and the mechanism of DNA binding deduced from a variety of experimental techniques (G. D. Brayer and A. McPherson, J. Mol. Biol. 169, 565, 1983; G. D. Brayer and A. McPherson, Biochemistry 23, 340, 1984), we have modeled the contiguous, lin...

journal_title：Journal of biomolecular structure & dynamics

authors： Brayer G,McPherson A

更新日期：1984-12-01 00:00:00

abstract：:Haloxyfop was reported to exhibit inhibition effect targeting Mycobacterium tuberculosis and pathogenic parasites. To pave its way for drug development, more research is required to determine the affinities interacting with biological receptors in vivo. In this work, the interactions of Haloxyfop with two model transp...

journal_title：Journal of biomolecular structure & dynamics

authors： Wang L,Zhang L,Feng RR,Dong X,Lu HZ,Zhang JJ

更新日期：2019-10-01 00:00:00

abstract：:An ab initio quantum-chemical study of stacked and hydrogen-bonded protonated cytosine dimer has been carried out. The calculations were made using the second-order Moller-Plesset perturbational method (MP2) with a medium-sized polarized set of atomic orbitals. H-bonded as well as stacked protonated base pairs are mor...

journal_title：Journal of biomolecular structure & dynamics

authors： Sponer J,Leszczynski J,Vetterl V,Hobza P

更新日期：1996-02-01 00:00:00

abstract：:Previous work has shown that edaravone inhibits fibrillogenesis of amyloid-β protein (Aβ). However, the detailed mechanism by which edaravone inhibits the conformational transition of the Aβ42 monomer is not known at the molecular level. Here, explicit-solvent molecular dynamics (MD) simulations were coupled with mole...

journal_title：Journal of biomolecular structure & dynamics

authors： Liu F,Ma Z,Sang J,Lu F

更新日期：2020-05-01 00:00:00