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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 6, Iss. 1 — Jan. 10, 2008
  • pp: 61–63

Characterization of PolyA and PolyC mismatches by Raman spectroscopy

Yubo Liao, Yaoyong Meng, Haodong Lei, and Ying Wang  »View Author Affiliations


Chinese Optics Letters, Vol. 6, Issue 1, pp. 61-63 (2008)


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Abstract

A·C mismatches are studied by Raman spectral characterization of PolyA, PolyC, and their equimolar complex in solution of 0.14 mol/L Na+, pH7.0. Experimental results show that A·C mismatches occur to be A/B (mainly A) conformers, and unlike Watson-Crick base pairing, this kind of mismatches is stabilized by only one hydrogen bond involving cytosine N4H2 and adenine N7. The formation of A·C complex makes the base stacking interactions much stronger, and conformation of the backbone more ordered, which leads to obvious Raman hypochromic effect with some shifts in corresponding bands.

© 2008 Chinese Optics Letters

OCIS Codes
(170.5660) Medical optics and biotechnology : Raman spectroscopy
(300.6170) Spectroscopy : Spectra
(300.6330) Spectroscopy : Spectroscopy, inelastic scattering including Raman
(300.6390) Spectroscopy : Spectroscopy, molecular
(300.6450) Spectroscopy : Spectroscopy, Raman

Citation
Yubo Liao, Yaoyong Meng, Haodong Lei, and Ying Wang, "Characterization of PolyA and PolyC mismatches by Raman spectroscopy," Chin. Opt. Lett. 6, 61-63 (2008)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-6-1-61

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