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The general conformations of a system of three linked peptide units are studied, and it is found that there are three types of conformations which contain NH…O hydrogen bonding between the first and the third units. One of them is part of a 310‐helix, while the other two arc nonhelical. The...
Copolymers of vinylimidazoles and vinylpyrrolidinone, dilute in imidazole residues, have been prepared; their reactivity in the hydrolysis of p‐nitrophenyl acetate has been examined. The catalytic activity of imidazole residues in these copolymers is comparable to that of nonpolyineric...
At low frequencies, the dielectric constant of gels of agar, carboxymethyl cellulose, gelatin, mid maize starch is much higher than that of water. It decreases continuously as the frequency increases, tending to level off at about 108 cps. The dielectric constant is lower the higher the...
The adsorption at the air‐water interface of calf thymus H3‐DNA labeled in the dry state by the Wilzbach method was studied by measuring surface concentration, surface tension, and surface potential. It was found that, correspondingly to the behavior of E. coli H3‐DNA labeled by...
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