Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution

Klump H, Ackermann T, Neumann E (1969)
Biopolymers 7(3): 423-431.

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The enthalpy change accompanying the double helix-coil transition of polyriboadenylic acid (poly A) in aqueous solution has been measured optically and calorimetrically in the pH range 5.7-4.5. The course of this cooperative transition was followed optically by measuring changes in ultraviolet absorption as a function of temperature at different pH values, and calorimetrically by determining the heat capacity of the solution through the transition region. From the latter measurements, the enthalpy of transition was calculated. It is shown, that H is dependent on pH as it is expected from the influence of protonation of the double helix of poly A.
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Klump H, Ackermann T, Neumann E. Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution. Biopolymers. 1969;7(3):423-431.
Klump, H., Ackermann, T., & Neumann, E. (1969). Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution. Biopolymers, 7(3), 423-431.
Klump, H., Ackermann, T., and Neumann, E. (1969). Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution. Biopolymers 7, 423-431.
Klump, H., Ackermann, T., & Neumann, E., 1969. Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution. Biopolymers, 7(3), p 423-431.
H. Klump, T. Ackermann, and E. Neumann, “Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution”, Biopolymers, vol. 7, 1969, pp. 423-431.
Klump, H., Ackermann, T., Neumann, E.: Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution. Biopolymers. 7, 423-431 (1969).
Klump, H., Ackermann, Theodor, and Neumann, Eberhard. “Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution”. Biopolymers 7.3 (1969): 423-431.
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