| Literature DB >> 6174974 |
W E Antholine, D H Petering, L A Saryan, C E Brown.
Abstract
The interaction of sulfur-containing ligands with complexes of Fe(II) bleomycin [Fe(II)Blm] was investigated by comparing DNA strand-scission activity with the structural characteristics of the complex. The bithiazole ring of excess Blm can form intermolecular complexes with Fe(II)Blm and with NO-Fe(II)Blm, and the bithiazole groups of CO-Fe(II)Blm interact with the metal center. This binding can be reversed by glutathione, CO-Fe(II)Blm binds to poly(dA-dT) . poly(dA-dT) via its bithiazole group to change the environment of the Fe2+ ion. Glutathione binds to the CO-Fe(II)Blm-poly(dA-dT) . poly(dA-dT) complex under conditions in which it stimulates DNA strand scission by Fe(II)Blm.Entities:
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Year: 1981 PMID: 6174974 PMCID: PMC349299 DOI: 10.1073/pnas.78.12.7517
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205