Conformations of DNA Loop
نویسندگان
چکیده
منابع مشابه
Conformations of Circular DNA
We examine the conformations of a model for short closed DNA. The molecule is represented as a cylindrically symmetric elastic string with a constraint corresponding to a specification of the linking number. We obtain analytic expressions for configuration, elastic energy, twist and linking number for a family of solutions spanning from a circle to a ’figure eight’. We suggest ways to use our c...
متن کاملConformations of Linear DNA
We examine the conformations of a model for underand overwound DNA. The molecule is represented as a cylindrically symmetric elastic string subjected to a stretching force and to constraints corresponding to a specification of the link number. We derive a fundamental relation between the Euler angles that describe the curve and the topological linking number. Analytical expressions for the spat...
متن کاملConformations of closed DNA.
We examine the conformations of a model for a short segment of closed DNA. The molecule is represented as a cylindrically symmetric elastic rod with a constraint corresponding to a specification of the linking number. We obtain analytic expressions leading to the spatial configuration of a family of solutions representing distortions that interpolate between the circular form of DNA and a figur...
متن کاملConformations of the rhodopsin third cytoplasmic loop grafted onto bacteriorhodopsin.
BACKGROUND The third cytoplasmic loop of rhodopsin (Rho EF) is important in signal transduction from the retinal in rhodopsin to its G protein, transducin. This loop also interacts with rhodopsin kinase, which phosphorylates light-activated rhodopsin, and arrestin, which displaces transducin from light-activated phosphorylated rhodopsin. RESULTS We replaced eight residues of the EF loop of ba...
متن کاملTheoretical studies of DNA-RNA hybrid conformations.
Molecular modelling has been used to probe the conformational preferences of double stranded DNA-RNA hybrids. As might be expected, the sugars of the DNA strand have higher conformational flexibility, but, for the majority of the repetitive sequences studied, these sugars prefer a C2-endo pucker, while ribose sugars uniformly adopt a C3-endo pucker. This gives rise to a strongly heteronomous du...
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ژورنال
عنوان ژورنال: Applied Physics
سال: 2014
ISSN: 2160-7567,2160-7575
DOI: 10.12677/app.2014.42002