Results 41 to 50 of about 131,881 (286)
Topological and geometrical entanglement in a model of circular DNA undergoing denaturation
, 2002 The linking number (topological entanglement) and the writhe (geometrical entanglement) of a model of circular double stranded DNA undergoing a thermal denaturation transition are investigated by Monte Carlo simulations. By allowing the linking number to
Baiesi, M., Orlandini, E., Stella, A. L.
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A simple model for DNA denaturation [PDF]
, 2001 Following Poland and Scheraga, we consider a simplified model for the denaturation transition of DNA. The two strands are modeled as interacting polymer chains. The attractive interactions, which mimic the pairing between the four bases, are reduced to a
Glass C.E. +3 more
core +6 more sources
Single molecule study of the DNA denaturation phase transition in the force-torsion space
, 2012 We use the "magnetic tweezers" technique to reveal the structural transitions that DNA undergoes in the force-torsion space. In particular, we focus on regions corresponding to negative supercoiling. These regions are characterized by the formation of so-
Brogioli, D. +6 more
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Supercoil formation in DNA denaturation
, 2009 We generalize the Poland-Scheraga (PS) model to the case of a circular DNA, taking into account the twisting of the two strains around each other. Guided by recent single-molecule experiments on DNA strands, we assume that the torsional stress induced by
Kabakcioglu, A. +2 more
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Numerical study of a disordered model for DNA denaturation transition [PDF]
Physical Review E, 2006 Latex, 25 pages including 12 postscript figures, published revised version (discussion enlarged)
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Lipid binding properties of the Tangier apolipoprotein A-I and its isoproteins.
Journal of Lipid Research, 1984 The apolipoprotein A-I was isolated from the plasma of normal individuals and of three homozygous patients with Tangier disease by immunoprecipitation. The apoA-I isoforms were further fractionated by isofocusing on polyacrylamide gels.
M Rosseneu +3 more
doaj +1 more source
Biophysical characterization of the structural stability of Helix lucorum hemocyanin
Biotechnology & Biotechnological Equipment, 2021 The structural stability of the hеmocyanin purified from the hеmolymph of gаrden snаils Helix lucorum (HlH) was investigated by means of far-UV circular dichroism (CD), differential scanning calorimetry (DSC) and transmission electron microscopy (TEM ...
Krassimira Idakieva +5 more
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Dna Denaturation-Supercoiling Transition at Thermophilic Temperatures [PDF]
Biophysical Journal, 2014 Local DNA opening plays an important role in DNA metabolism and cell biology as the double-helix must be melted before the information contained within may be accessed. Cells finely tune the torsional state of their genomes to strike a balance between stability and accessibility.
Galburt, Eric +3 more
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Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Influence of Ficoll on urea induced denaturation of fibrinogen
AIP Advances, 2016 Ficoll is a neutral, highly branched polymer used as a molecular crowder in the study of proteins. Ficoll is also part of Ficoll-Paque used in biology laboratories to separate blood to its components (erythrocytes, leukocytes etc.,).
Kamatchi Sankaranarayanan +1 more
doaj +1 more source