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Specific effects of anions on the transition pressure of copoly (λ-benzyl-L-glutamate-L-glutamic acid) monolayers

✍ Scribed by Akira Shibata; Shinsuke Yamashita; Takuya Yamashita

Publisher
Elsevier Science
Year
1985
Weight
343 KB
Volume
13
Category
Article
ISSN
0166-6622

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📜 SIMILAR VOLUMES

Specific cation effects on the conformat
Specific cation effects on the conformation of α-poly-L-glutamic acid
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The effect of the binding of the alkaline earth cations and of cupric and lanthanum ions on the dissociation of the sidechain carboxyl groups in a-poly-kglutamic acid has been measured by a modified titration technique. The a-poly-bglutamic acid was pretitrated with the strong base of a weakly bound

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## Abstract The thermal helix–coil transition of four samples of poly(γ‐benzyl‐L‐glutamate) in the dioxane–dichloroacetic acid (DCA) mixture was studied by optical rotatory dispersion method. The transition occurred at very high DCA content (97.5% by weight) in this system. The transition parameter

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The optical rotatory dispersion in the range 630-340 mp has been measured for aqueous solutions of the tetramethylammonium salt of a-poly-L-glutamic acid to compare the effects produced by added tetramethylammonium chloride and magnesium chloride at equivalent ionic strengths. The addition of magnes

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COMMUNICATION TO THE EDITORS ## O n the Magnitude of the Cotton Eflects of Poly-L-glutarnic Acid The recent improvement in spectropolarimeters makes it possible to measure the Cotton effects of polypeptides and proteins between 185 and 240 rnp.Ir2 The helical conformation, quite unlike the coiled