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Effects of Na+ on the persistence length and excluded volume of T7 bacteriophage DNA

โœ Scribed by E. S. Sobel; J. A. Harpst

Publisher
Wiley (John Wiley & Sons)
Year
1991
Tongue
English
Weight
475 KB
Volume
31
Category
Article
ISSN
0006-3525

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โœฆ Synopsis

Total intensity, Rayleigh light scattering has been used to measure the rms radius, second virial coefficient, persistence length, and excluded volume of homogeneous T7 bacteriophage DNA as a function of Na+ concentration (0.005 to 3.0 M). All parameters decrease sharply as "a+] increases, and tend to level off at high Na' . The variation of persistence length with [ Na+] is consistent with predictions from counterion condensation theory.

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