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Helix-Coil Transition in Mixed Solvents. II. Calorimetric Study of Poly(γ-benzyl L-glutamate) in Dichloroacetic Acid-Dichloroethane Mixtures

✍ Scribed by Ananthanarayanan, V. S.; Davenport, G.; Stimson, E. R.; Scheraga, H. A.

Book ID: 126277094
Publisher: American Chemical Society
Year: 1973
Tongue: English
Weight: 555 KB
Volume: 6
Category: Article
ISSN: 0024-9297
DOI: 10.1021/ma60034a018

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Helix-Coil Transition in Mixed Solvents.

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Helix–coil transition of poly(γ-benzyl-L

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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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Enthalpy change of the coil–helix transition of poly(γ-benzyl L-glutamate) in dichloroacetic acid–1,2-dichloroethane mixtures

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By combining the heat of dilution of a poly (y-benzyl L-glutamate)-dichloroacetic acid-1,2-dichloroethane solution with the corresponding heat of mixing of two solvents, the integrated heat of the coil-helix transition of poly(y-benzyl L-glutamate) in the solution was estimated to be about 750 cal/m

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Conformational studies of poly(L-tyrosin

Conformational studies of poly(L-tyrosine). A helix–coil transition in dimethyl sulfoxide–dichloroacetic acid mixtures

✍ Kuo-Jung Wen; Robert W. Woody 📂 Article 📅 1975 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 773 KB

## Abstract Poly(L‐tyrosine) is a random coil in dimethyl sulfoxide. Upon addition of dichloroacetic acid, poly(L‐tyrosine) undergoes a conformational transition centered at about 10% dichloroacetic acid. The transition is nearly complete at 20% dichloroacetic acid. Further addition of dichloroacet