𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effects of deuterium on the thermal stability of the poly A–poly U helix.

✍ Scribed by H. Klump

Publisher
Wiley (John Wiley & Sons)
Year
1972
Tongue
English
Weight
366 KB
Volume
11
Category
Article
ISSN
0006-3525

No coin nor oath required. For personal study only.

✦ Synopsis

i. Br. (West Germany) synopsis

The effect of deuterium on the thermal stability of the polynucleotide double helix formed by the homopolymers polyadenylic acid (poly A) and polyuridylic acid (poly U) has been invertigated by measuring the heat capacity as a function of temperature in an automatic scanning adiabatic calorimeter. Hydrogen-bonded and deuterium-bonded helical conformations of the polynucleotides used have been melted in HzO and D20, respectively, as solvent. Within the limits of experimental error, there is no difference in the measured enthalpy change accompanying the helix-random coil transition. The enthalpy change AH is 6.6 Kcal/hlBP in any case. The half-conversion temperatures T , differ by two degrees. T , for poly (AU) in H2O is 45.8OC, T , for poly (AU) in D20 is 47.7OC.

📜 SIMILAR VOLUMES

Effects of thermal stability on the crys
Effects of thermal stability on the crystallization behavior of poly(vinylidene chloride)
✍ Tar-Hwa Hsieh; Ko-Shan Ho 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 207 KB 👁 2 views

Thermal analysis based on TGA (thermal gravimetric analysis) and DSC (differential scanning calorimeter) shows no significant degradation for PVDC which has been annealed at 210°C for less than 2 min. And the following recrystallization behavior at lower temperature (120°C) is also independent of th

Studies on the effect of laser radiation
Studies on the effect of laser radiation on the thermal stability of stabilized poly(vinyl chloride)
✍ S. A. Nouh; M. M. Radwan; W. R. Agami; M. Morsy 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 133 KB 👁 2 views

## Abstract Nonisothermal studies were carried out using thermogravimetry (TG) and differential thermogravimetry (DTG) to obtain the activation energy of the decomposition for poly(vinyl chloride) (PVC), stabilized by ethyl, __N__‐phenylmaleimide, and 4‐carboxylate (ENPMC). Thermal gravitational an

Effect of non-complementary nucleotides
Effect of non-complementary nucleotides on the rate of helix formation: Kinetics of formation of poly (I)·poly (C,I) and poly (I)·poly (C,U) complexes
✍ Neville R. Kallenbach; Stanley D. Drost 📂 Article 📅 1972 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 386 KB 👁 1 views

## Abstract Apparent second‐order rate constants for complex formation between poly (I) and poly (C) and copolymers of C containing non‐complementary I or U residues have been determined spectrophotometrically. The rate constants decrease as the concentration of either I or U in the C strands incre