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An approximate analytic expression for the translational friction coefficient of a toroid modeled as a continuous shell of frictional elements is derived using the Kirkwood approximation. The accuracy of this expression was determined by comparing the friction coefficients predicted by it to...
The experimentally observed geometry of a miniature double helix of high anti (χCN fixed ≃ 120°) nucleic acid structure indicates substantial interstrand base stacking with little intrastrand base stacking. This geometry is consistent with the right‐handed vertical double helix in which the...
Thermodynamic properties of the amylose–iodine–triiodide complex have been studied by spectrophotometry and by calorimetry using previously studied samples of amylose ionic derivatives, carboxymethylamylose and diethylaminoethylamylose. The ratio of triiodide to total molecular iodine...
The energy of interaction of a spermine molecule with the A‐ and B‐forms of DNA has been calculated, assuming that the molecule of spermine is fixed in the narrow groove of the DNA helix with the formation of hydrogen bonds between the amino groups of spermine and the phosphate groups of DNA....
Precise evaluation of the branching characteristics of glycogen complex from a variety of sources was made by replicate determinations of end groups by a reproducible periodate oxidation method and by replicate determinations of the percentage degradation by exhaustive β‐amylase activity....
Possible conformations of lacto‐N‐tetraose, lacto‐N‐neotetraose, related disaccharides, and other milk oligosaccharides have been studied by an energy‐minimization procedure using empirical potential functions. Lacto‐N‐tetraose favors a “curved” conformation, while...
A simple straight‐line relationship between iodine staining and the average chain length (CL) of the linear amyloglucans has been derived utilizing the published data of Baldwin et al. (J. Am. Chem. Soc. 66, 111 (1944)), Bailey and Whelan (J. Biol. Chem. 236, 939 (1961)), Szejtli et al....
Internal Brownian motions of clean &phis;29 and λ‐DNAs have been studied using photon‐correlation techniques at both visible (λ0 = 632.8 nm) and uv (λ0 = 363.8 nm) wavelengths. The present dynamic light scattering data, which extend to K2 = 19 × 1010 cm−2, can in every case be...
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