Metal ion-directed outside binding of small DNA ligand
Author(s) -
Toshihiro Ihara,
Takashi Ikegami,
T. Fujii,
Yusuke Kitamura,
Shinji Sueda,
Makoto Takagi,
Nicholas E. Geacintov,
Akinori Jyo
Publication year - 2003
Publication title -
nucleic acids symposium series
Language(s) - English
Resource type - Journals
eISSN - 1746-8272
pISSN - 0261-3166
DOI - 10.1093/nass/3.1.85
Subject(s) - dna , dimer , chemistry , pyridinium , ligand (biochemistry) , crystallography , duplex (building) , metal , stereochemistry , biochemistry , receptor , medicinal chemistry , organic chemistry
DNA binding of the ligand bearing an oxine and a pyridinium group was regulated by coexisting Cu2+ over the binding constant range of three orders of magnitude. The ligands coordinated to Cu2+ to form a dimer and then cooperatively bound outside of DNA duplex to give the well-regulated 1-D structure along the DNA backbone.
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