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Calculations of the circular dichroism of double-helical nucleic acids. I. Effects involving π → π* transitions

✍ Scribed by David S. Studdert; Robert C. Davis

Publisher
Wiley (John Wiley & Sons)
Year
1974
Tongue
English
Weight
657 KB
Volume
13
Category
Article
ISSN
0006-3525

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✦ Synopsis

Abstract

The circular dichroism of double‐helical nucleic acids was calculated as a function of geometry using the theory of Tinoco and Johnson. This theory does not include contributions of near ultraviolet transitions that are not π → π* in nature. The calculated circular dichroism shows a strong dependence on the distance of base pairs from the helix axis and the tilt of the base pair. Smaller dependences are predicted for the propeller‐like twist of a base pair and for variation of the angular increment per base pair. Moderately good agreement between calculated and many experimentally observed spectra could be generated.

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On page 1533, in the last term of eq. (2), (alm[O) should be (alml0). On page 1538, in line 3 of the Results section, R,,\* should be Rn,\*; in the next line, RB should also be Rn,\*, and the first "in" should be "is.