Electrostatic investigation of metal cation binding to DNA bases and base pairs

(Note: The full text of this document is currently only available in the PDF Version )

Shridhar R. Gadre, Savita S. Pundlik, Ajay C. Limaye and Alistair P. Rendell


Abstract

Various binding sites in DNA bases and base pairs as predicted by rigorous analysis of the molecular electrostatic potential (MESP) are explored for coordination with Li+ and Ca2+ cations; the electrostatics is generally seen to provide an explanation for the observed trends in binding upon subjecting the anticipated structures to optimization at a high level ab initio theory.


References

  1. J. V. Burda, J. Sponer and P. Hobza, J. Phys. Chem., 1996, 100, 7275 CrossRef CAS.
  2. M. Langlais, H. A. Tajmir-Riahi and R. Savoie, Biopolymers, 1990, 30, 743 CrossRef CAS.
  3. E. H. S. Anwander, M. M. Probst and B. M. Rode, Biopolymers, 1990, 29, 757 CrossRef CAS.
  4. V. N. Potaman and V. N. Soyfer, J. Biomol. Struct. Dynam., 1994, 11, 1035 Search PubMed.
  5. J. Sponer, J. V. Burda, J. Leszczynski and P. Hobza, J. Biomol. Struct. Dynam., 1997, 14, 613 Search PubMed.
  6. R. B. Martin, Acc. Chem. Res., 1985, 18, 32 CrossRef CAS.
  7. P. Politzer and D. G. Truhlar, Chemical Applications of Atomic and Molecular Electrostatic Potentials, Plenum, New York, 1981 Search PubMed; J. Tomasi, R. Bonaccorsi and R. Cammi, in Theoretical Methods of Chemical Bonding, ed. Z. B. Maksic, Springer, 1990, vol. 3 Search PubMed.
  8. (a) S. R. Gadre, S. A. Kulkarni and I. H. Shrivastava, J. Chem. Phys., 1992, 96, 5253 CrossRef CAS; (b) R. N. Shirsat, S. V. Bapat and S. R. Gadre, Chem. Phys. Lett., 1992, 200, 373 CrossRef; (c) S. R. Gadre and S. S. Pundlik, J. Am. Chem. Soc., 1995, 117, 9559 CrossRef CAS; (d) S. R. Gadre, P. Bhadane, S. S. Pundlik and S. S. Pingale, in Molecular Electrostatic Potentials: Theory and Applications, ed. J. S. Murray and K. D. Sen, Elsevier, Amsterdam, 1996, vol. 3 Search PubMed.
  9. J. Sponer, J. Leszczynski and P. Hobza, J. Phys. Chem., 1996, 100, 1965 CrossRef CAS The optimized planar structures of WC base pairs are kindly made available by Dr Sponer.
  10. S. R. Gadre and S. S. Pundlik, J. Phys. Chem., 1997, 101, 3298 Search PubMed.
  11. See S. P. Gejji, C. H. Suresh, L. J. Bartolotti and S. R. Gadre, J. Phys. Chem., 1997, 101, 5678 Search PubMed and references therein for a discussion of electrostatic docking.
Click here to see how this site uses Cookies. View our privacy policy here.