TY  - JOUR
AB  - 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.
DA  - 1969
DO  - 10.1002/bip.1969.360070313
KW  - Biochemistry and molecular biology
KW  - Biophysics
LA  - eng
IS  - 3
M2  - 423
PY  - 1969
SN  - 0006-3525
SP  - 423-431
T2  - Biopolymers
TI  - Experimental thermodynamics of the helix-random coil transition. II. Calorimetric measurement of transition enthalpies of poly A in acid aqueous solution
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17743584
Y2  - 2024-11-22T01:51:19
ER  -