PMID: 8448108Mar 16, 1993Paper

Solution structure of a complex between [N-MeCys3,N-MeCys7]TANDEM and [d(GATATC)]2

Biochemistry
K J AddessJ Feigon

Abstract

[N-MeCys3,N-MeCys7]TANDEM (CysMeTANDEM) is an octadepsipeptide quinoxaline antibiotic that binds specifically by bisintercalation to double-stranded DNA at NTAN sites [Addess, K. J., Gilbert, D. E., Olsen, R. K., & Feigon, J. (1992) Biochemistry 31, 339-350; Addess, K. J., Gilbert, D. E., & Feigon, J. (1992) in Structure and Function Volume 1: Nucleic Acids (Sarma, R. H., & Sarma, M. H., Eds.) pp 147-164, Adenine Press, Schenectady, NY]. We have determined the three-dimensional structure of a complex of CysMeTANDEM and the DNA hexamer [d(GATATC)]2 using two-dimensional 1H NMR derived NOE and dihedral bond angle constraints. This is the first structure of a TpA-specific quinoxaline antibiotic in complex with DNA. Initial structures of the complex were generated by metric matrix distance geometry followed by simulated annealing. Eight of these structures, refined by restrained molecular dynamics, energy minimization, and NOE-based relaxation matrix refinement, have an average pairwise RMSD of 1.11 A for all structures, calculated using all heavy atoms of the drug and the DNA except the terminal base pairs. CysMeTANDEM binds to and affects the structure of the DNA in a manner similar to that observed in complexes of the CpG-specif...Continue Reading

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Citations

Jul 11, 1995·Nucleic Acids Research·C CarlssonB Akerman
Sep 30, 2005·Nucleic Acids Research·Jayati Roy Choudhury, Ulrich Bierbach
Jan 1, 2008·Acta Crystallographica. Section E, Structure Reports Online·Hoong-Kun FunPaul R Raithby
May 16, 2002·Proceedings of the National Academy of Sciences of the United States of America·Shan-Ho ChouFu-Ming Chen
Sep 30, 2009·Biometals : an International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine·Hoi-Ling SengChew-Hee Ng
Apr 21, 2006·Organic Letters·Brian R McNaughton, Benjamin L Miller
Jul 4, 2008·Biochemistry·Andrew J HampshireKeith R Fox

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