Interaction between the left-handed Z-DNA and polyamine-2. The crystal structure of the d(CG)3 and spermidine complex.
FEBS Lett
; 391(1-2): 153-6, 1996 Aug 05.
Article
em En
| MEDLINE
| ID: mdl-8706905
ABSTRACT
This paper deals with the crystal structure of d(CG)3-spermidine complex. The DNA fragment, d(CG)3, was crystallized with N-(2-amino-propyl)-1,4-diamino-butane, PA(34), spermidine. The results of its X-ray crystallographic analysis showed many intermolecular contacts between d(CG)3 and spermidine, but the binding mode of spermidine to the d(CG)3 molecule is different from that of the d(CG)3 and N-(2-amino-ethyl)-1,4-diamino-butane [PA(24)] complex a spermidine molecule bound to the d(CG)3 and its symmetrically related neighboring d(CG)3 molecules through the water molecules with hydrogen bonds, while one PA(24) molecule connected directly to one d(CG)3 molecule, but not to its neighboring d(CG)3 molecule. In the crystal, the d(CG)3 molecule was the left-handed Z-form, and three magnesium cations and a sodium cation were observed around the d(CG)3 moiety with different binding modes from the case of the d(CG)3-PA(24) complex.
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Bases de dados:
MEDLINE
Assunto principal:
Oligodesoxirribonucleotídeos
/
Poliaminas
/
DNA
/
Espermidina
Idioma:
En
Revista:
FEBS Lett
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
Japão