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The effect of poly dispersity on the nuclear magnetic resonance spectra of samples of poly‐γ‐benzyl‐L‐glutamateein the helix–random coil transition is studied. In the transitionregion the α‐CH proton resonance shows two peaks whose behavior does not change appreciably upon...
The solution conformation of β‐D‐O2,2′‐cyclouridine has been determined at 27 and 88°C in D2O by proton magnetic resonance spectroscopy. The conformation is described in terms of a fixed syn‐like sugar‐base torsional angle, a type S furanose ring conformation (similar to...
Oligopeptides containing glycine and one or two L‐alanyl or L‐glutamyl residues have been studied by circular dichroism (CD) and optical rotatory dispersion (ORD) in aqueous solution at pH 1.0, pH 6.0, and pH 10.0 and in aqueous ethanol. Two glycyl residues are required to remove effects of...
Determinations of the amount of bound water in hydrated proteins yield strongly diverging values. The cause of this is the continuity of the transition from bound to free water, and the diffeernt sensitivities to water structure of the measuring techniques. Only the methods that aim at the...
The rate of hemoglobin deoxygenation is measured as a function of inorganic phosphate concentration, pH, and temperature. Isokinetic relationships (enthalpy‐entropy compensation) are searched for by applying the method of O. Exner and, for comparative purposes, the conventional method of...
The change of the apparent partial specific volumes of egg albumin, bovine serum albumin, bovine methemoglobin, β‐lactoglobulin, and lysozyme with temperature through the thermal transitions of the proteins have been measured with dilatometers. Four regions in the plot of the apparent partial...
The helix–coil transition of poly‐L‐lysine (PLL) in water–isopropanol solvent mixtures has been investigated at room temperature by circular dichroism measurements. Within the range of 70%–80% isopropanol concentration (by volume), the polymer undergoes a sharp transition, characterized...
The electrical conductivity of bovine Achilles tendon with various amounts of adsorbed water was measuredas a function of temperature. The conduction appeared to be fully determined by the water of hydration. The current is probably primarily carried by protons at water contents up to 45% and by...
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