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The helix–coil transitions of poly (dA). Poly (dT) and poly (dA-dT). Poly (dA-dT)

✍ Scribed by Roger M. Wartell

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

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✦ Synopsis

Helix-coil transition curves are calculated for poly (dA).poly(dT) and poly (dA-dT). poly (dA-dT) using the integral equation approach of Goel and Montroll.6 The transitions are described by the loop entropy model with the exponent of the loop entropy factor, k, remaining an arbitrary constant. The theoretical calculations are compared with experimental transition curves of the two polymers. Results indicate that the stacking energies for these two polymers differ by about 1 kcal/mole of base pairs. Also, a fit between theory and experiment was not possible fork > 1.70.

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