Solution structure and dynamics of GCN4 cognate DNA: NMR investigations.

Khandelwal, P; Panchal, S C; Radha, P K; Hosur, R V

Khandelwal, P; Panchal, S C; Radha, P K; Hosur, R V.

Afiliación

Khandelwal P; Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India.

Nucleic Acids Res ; 29(2): 499-505, 2001 Jan 15.

Article en En | MEDLINE | ID: mdl-11139620

ABSTRACT

ABSTRACT

A 12 bp long GCN4-binding, self-complementary duplex DNA d(CATGACGTCATG)(2) has been investigated by NMR spectroscopy to study the structure and dynamics of the molecule in aqueous solution. The NMR structure of the DNA obtained using simulated annealing and iterative relaxation matrix calculations compares quite closely with the X-ray structure of ATF/CREB DNA in complex with GCN4 protein (DNA-binding domain). The DNA is also seen to be curved in the free state and this has a significant bearing on recognition by the protein. The dynamic characteristics of the molecule have been studied by (13)C relaxation measurements at natural abundance. A correlation has been observed between sequence-dependent dynamics and recognition by GCN4 protein.

Asunto(s)

ADN/química; Proteínas Fúngicas/química; Proteínas Quinasas/química; Proteínas de Saccharomyces cerevisiae; Cristalografía por Rayos X; Proteínas de Unión al ADN/química; Modelos Moleculares; Resonancia Magnética Nuclear Biomolecular/métodos; Azúcares de Nucleósido Difosfato/química; Estructura Cuaternaria de Proteína; Solubilidad; Especificidad por Sustrato; Termodinámica

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Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Proteínas Quinasas / ADN / Proteínas Fúngicas / Proteínas de Saccharomyces cerevisiae Tipo de estudio: Prognostic_studies Idioma: En Revista: Nucleic Acids Res Año: 2001 Tipo del documento: Article País de afiliación: India

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