Zinc and copper complexes of prodigiosin: implications for copper-mediated double-strand DNA cleavage

Org Lett. 2003 Jan 23;5(2):113-6. doi: 10.1021/ol027165s.

Abstract

[reaction: see text] Zinc(II) and copper(II) complexes of prodigiosin (1) have been characterized. All N-atoms of 1 bind Cu(II) to generate 5: the complex exhibits regiospecific oxidation of the C-pyrrole. In contrast, coordination by Zn(II) to 1 produces Zn(1)(2) (8), a 4-coordinate tetrahedral complex. The influence of these binding geometries on Cu-mediated double-strand (ds) DNA cleavage by 1 is discussed.

MeSH terms

  • Anti-Bacterial Agents / chemistry*
  • Anti-Bacterial Agents / pharmacology
  • Binding Sites
  • Copper / chemistry*
  • DNA / drug effects*
  • DNA / metabolism
  • Hydrolysis / drug effects
  • Molecular Structure
  • Prodigiosin / chemistry*
  • Prodigiosin / pharmacology
  • Structure-Activity Relationship
  • Zinc / chemistry*

Substances

  • Anti-Bacterial Agents
  • Copper
  • DNA
  • Zinc
  • Prodigiosin