Distamycin A modulates the sequence specificity of DNA alkylation by duocarmycin A.
Distamycin A modulates the sequence specificity of DNA alkylation by duocarmycin A.
复制标题
Distamycin A 通过 duocarmycin A 调节 DNA 烷基化的序列特异性。
DOI:
10.1073/pnas.93.25.14405
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发表时间:
1996
影响因子:
11.1
通讯作者:
Wang,AH
中科院分区:
文献类型:
--
作者:
Sugiyama,H;Lian,C;Isomura,M;Saito,I;Wang,AH
Duocarmycin A (Duo) normally alkylates adenine N3 at the 3′ end of A+T-rich sequences in DNA. The efficient adenine alkylation by Duo is achieved by its monomeric binding to the DNA minor groove. The addition of another minor groove binder, distamycin A (Dist), dramatically modulates the site of DNA alkylation by Duo, and the alkylation switches preferentially to G residues in G+C-rich sequences. HPLC product analysis using oligonucleotides revealed a highly efficient G–N3 alkylation via the cooperative binding of a heterodimer between Duo and Dist to the minor groove. The three-dimensional structure of the ternary alkylated complex of Duo/Dist/d(CAGGTGGT)·d(ACCACCTG) has been determined by nuclear Overhauser effect (NOE)-restrained refinement using 750 MHz two-dimensional NOE spectroscopy data. The refined NMR structure fully explains the sequence requirement of such modulated alkylations. This is the first demonstration of Duo DNA alkylation through cooperative binding with another structurally different natural product, and it suggests a promising new way to alter or modify the DNA alkylation selectivity in a predictable manner.
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影响因子:
15
作者:
BOGER, DL;ISHIZAKI, T;ZARRINMAYEH, H
通讯作者:
ZARRINMAYEH, H
影响因子:
13.8
作者:
ROEDER, RG
通讯作者:
ROEDER, RG
影响因子:
1.8
作者:
H. Sugiyama;M. Hosoda;I. Saito;A. Asai;H. Saito
通讯作者:
H. Saito
DOI:
10.1002/chin.199525306
发表时间:
1995
期刊:
ChemInform
影响因子:
--
作者:
D. Boger
通讯作者:
D. Boger
影响因子:
4
作者:
R. Hori;M. Carey
通讯作者:
M. Carey