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Polycations. 5. Inducement of psi-DNA circular dichroism signals for duplex deoxyribonucleotide homopolymers by
T C Strekas1, R Engel, K Locknauth
1Department of Chemistry and Biochemistry, Queens College of the City University of New York, Flushing, New York 11367, USA.
Archives of Biochemistry and Biophysics
|March 24, 1999
Abstract:
Atypical circular dichroism intensity enhancements previously associated with Psi-DNA condensates are reported for poly(dG-dC):poly(dG-dC) and poly(dA-dT):poly(dA-dT) upon addition to them of a polycationic string salt. Polycationic strings are organic species incorporating several cationic sites in a linear array through the molecule. The effect observed herein with a small molecule model system holds promise for elucidation of the structural details associated with Psi-DNA condensate formation.