1m1a

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{{STRUCTURE_1m1a| PDB=1m1a | SCENE= }}
{{STRUCTURE_1m1a| PDB=1m1a | SCENE= }}
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'''LIGAND BINDING ALTERS THE STRUCTURE AND DYNAMICS OF NUCLEOSOMAL DNA'''
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===LIGAND BINDING ALTERS THE STRUCTURE AND DYNAMICS OF NUCLEOSOMAL DNA===
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==Overview==
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We determined the crystal structures of three nucleosome core particles in complex with site-specific DNA-binding ligands, the pyrrole-imidazole polyamides. While the structure of the histone octamer and its interaction with the DNA remain unaffected by ligand binding, nucleosomal DNA undergoes significant structural changes at the ligand-binding sites and in adjacent regions to accommodate the ligands. Our findings suggest that twist diffusion occurs over long distances through tightly bound nucleosomal DNA. This may be relevant to the mechanism of ATP-dependent and spontaneous nucleosome translocation, and to the effect of bound factors on nucleosome dynamics.
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{{ABSTRACT_PUBMED_12559907}}
==About this Structure==
==About this Structure==
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[[Category: Nucleosome]]
[[Category: Nucleosome]]
[[Category: Pyrrole-imidazole polyamide]]
[[Category: Pyrrole-imidazole polyamide]]
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Revision as of 19:59, 2 July 2008

Image:1m1a.png

Template:STRUCTURE 1m1a

LIGAND BINDING ALTERS THE STRUCTURE AND DYNAMICS OF NUCLEOSOMAL DNA

Template:ABSTRACT PUBMED 12559907

About this Structure

1M1A is a Protein complex structure of sequences from Xenopus laevis. Full crystallographic information is available from OCA.

Reference

Crystal structures of nucleosome core particles in complex with minor groove DNA-binding ligands., Suto RK, Edayathumangalam RS, White CL, Melander C, Gottesfeld JM, Dervan PB, Luger K, J Mol Biol. 2003 Feb 14;326(2):371-80. PMID:12559907

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