| The opening of basepairs in DNA double helices is a prerequisite for propagation and expression of genetic information. |
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| Further spermidine penetration between the double helices causes DNA resolubilization. |
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| Recent structural experiments have suggested that the domain may also contain left-handed polyproline helices. |
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| The numeration of the helices is consistent with the secondary structure indications present in the PDB file. |
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| Topoisomerases are able to relieve torsional stress in DNA double helices and separate intertwined DNA molecules. |
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| Transmembrane helices in membrane coils predominantly cross at left-handed angles, those in membrane gates predominantly at right-handed angles. |
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| The displacements of the cytoplasmic moieties of these helices amount to 0.1-0.2 nm. |
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| Subsequent nuclear magnetic resonance studies established that the helices are right-handed. |
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| In general, the secondary structure of the individual helices is very well conserved. |
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| This indicates that the secondary structure at helices C and H is preserved upon adsorption to the lipid bilayer. |
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| In a second step, these helices are inserted into the hydrophobic environment of the detergent micelle. |
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| The seven helices are flexibly moving within the environment, showing the importance of a dynamic perspective. |
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| The decrease in the pitch value corresponds to an overwinding of the helices, but was still compatible with the observed pitches in coiled coil. |
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| This serves as the starting point for optimization of the helices in the helical bundle. |
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| By the time I finish with you you're not just going to fly circles around those scum, but ellipsoids, helices, and hyperbolae. |
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| Seven of the predicted helices in our final structure are consistent with the model of MacDonald. |
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| The helices have a radial slope and converge at the intracellular bundle narrowing. |
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| Stupp and his coworkers made the templates for the cadmium sulfide helices from molecules dubbed dendron rodcoils. |
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| Similar hydrogen bonds from the adenine amino groups are also involved in the binding of proteins into the major groove of DNA double helices. |
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| The opsin molecules themselves each consist of seven helices that cross the disk membrane and surround the chromophore. |
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| In fact, a wide range of structural proteins have coils in which two or three helices are wound around each other to form a left-handed superhelix conformation. |
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| Stability in the alpha helices, even if it decreased the overall stability of the protein, inhibited the formation of amyloid fibrils. |
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| But the inhibition was not because the protein refused to unfold when the alpha helices were stabilised. |
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| It prevents chain agglomeration and degradation, and abnormal formation of the helices. |
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| But beware of pre-fabricated stuff like headgears, fixed lip-bumpers or quad helices or even worse. |
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| Some two-long alkyl chain amphiphiles can adopt stable tubular structures including twist ribbons, helices, and cochleate cylinders in aqueous media. |
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| The double-stranded helices are either parallel or antiparallel and exist in a variety of conformations of different lengths and numbers of residues per turn. |
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| The double helices duplicate themselves by separating at one place between the two strands and becoming progressively unattached. |
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| Both had almost the same number of helices, strands and turns. |
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| Most suitably equipped metalworking lathes can also be used to produce most solids of revolution, plane surfaces and screw threads or helices. |
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| It is M'Diarmid's sentences — fantastically clausal helices that would make a sentence-diagrammer faint — that defy explanation, even two hundred years later. |
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| Protoxylem tracheids have helices with borders in Huperzia and Lycopodium, but in Phylloglossum protoxylem annuli and helices are non-bordered. |
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| Rather, the stable alpha helices inhibited the types of interaction that would otherwise lead to amyloid formation. It has been known for a long time that mutations in a protein can encourage amyloid formation. |
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| Screwed into the sconces and lanterns of one of the city's oldest buildings are the glowing helices of very 21st-century compact fluorescent bulbs. |
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| The researchers were able to form three types of mutants in the protein, in which one or both of the alpha helices were made more stable than they normally would have been. |
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| The institute is a partner in two multidisciplinary projects from NRC's Genomics and Health Initiative that intertwine mathematics and biology like the double helices of a DNA chain. |
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| Due to the different number of helices and the different pitches of the conveying elements, cavities are formed that alternatingly open and close steadily with the rotary motion of the rotor. |
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| Many models of double helices are rather cumbersome, difficult to interpret,or are unable to be touched by the student. |
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| Chromosomal crossover is when two DNA helices break, swap a section and then rejoin. |
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| The helices are motile by flexing or rotation. |
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| Towards this goal, Compugen developed a sequence-based computational method for the prediction of intra-molecular interacting alpha helices. |
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| Chains of these linked pyridine twins spontaneously braid into double helices around copper ions. |
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| Each nucleotide seeks out a new partner, and these partners align to form a complementary strand, thereby creating two new double helices. |
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| The helices line up, facing opposite ways, then make contact with the two helices from another pair. |
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| When they used the program, the researchers were surprised to discover that their top candidates for containing beta helices were all bacterial proteins. |
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| Adsorption of peripheral proteins to a phospholipid surface often depends on defects in packing of lipid molecules, which enable insertion of amphipathic helices. |
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| The most common secondary structures are alpha helices and beta sheets. |
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