Literature DB >> 12354023

Simultaneous N7,O6-binding of guanine to two zinc centers and its possible biological significance.

Felix Zamora1, Michal Sabat.   

Abstract

The reaction of ZnCl(2) with 9-ethylguanine (9-EtGH) produced a novel dinuclear Zn(II) complex, [Zn(2)Cl(4)(H(2)O)(mu-9-EtGH-N7,O6)(9-EtGH-N7), 1. The X-ray structure analysis (monoclinic, P2(1) (No. 4), a = 11.0636(6) A, b = 6.6546(4) A, c = 15.9630(9) A, beta = 101.069(1) degrees, V = 1153.4(1) A(3), Z = 2) revealed that one of the tetrahedrally coordinated Zn(II) atoms binds to the N7 site of 9-EtGH and to the exocyclic O6 atom of another 9-EtGH molecule. The remaining Zn(II) atom binds to the N7 site of the second 9-EtGH moiety.

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Year:  2002        PMID: 12354023     DOI: 10.1021/ic0258532

Source DB:  PubMed          Journal:  Inorg Chem        ISSN: 0020-1669            Impact factor:   5.165


  2 in total

1.  Interguanine hydrogen-bonding patterns in adducts with water and Zn-purine complexes (purine is 9-methyladenine and 9-methylguanine). Unexpected preference of Zn(II) for adenine-N7 over guanine-N7.

Authors:  Pilar Amo-Ochoa; Pablo J Sanz Miguel; Oscar Castillo; Michal Sabat; Bernhard Lippert; Félix Zamora
Journal:  J Biol Inorg Chem       Date:  2007-02-20       Impact factor: 3.862

2.  How Divalent Cations Interact with the Internal Channel Site of Guanine Quadruplexes.

Authors:  Francesco Zaccaria; Stephanie C C van der Lubbe; Celine Nieuwland; Trevor A Hamlin; Célia Fonseca Guerra
Journal:  Chemphyschem       Date:  2021-09-23       Impact factor: 3.520

  2 in total

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