1c8c: Difference between revisions

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[[Image:1c8c.gif|left|200px]]
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[[Image:1c8c.png|left|200px]]


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{{STRUCTURE_1c8c|  PDB=1c8c  |  SCENE=  }}  
{{STRUCTURE_1c8c|  PDB=1c8c  |  SCENE=  }}  


'''CRYSTAL STRUCTURES OF THE CHROMOSOMAL PROTEINS SSO7D/SAC7D BOUND TO DNA CONTAINING T-G MISMATCHED BASE PAIRS'''
===CRYSTAL STRUCTURES OF THE CHROMOSOMAL PROTEINS SSO7D/SAC7D BOUND TO DNA CONTAINING T-G MISMATCHED BASE PAIRS===




==Overview==
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Sso7d and Sac7d are two small chromatin proteins from the hyperthermophilic archaeabacterium Sulfolobus solfataricus and Sulfolobus acidocaldarius, respectively. The crystal structures of Sso7d-GTGATCGC, Sac7d-GTGATCGC and Sac7d-GTGATCAC have been determined and refined at 1.45 A, 2.2 A and 2.2 A, respectively, to investigate the DNA binding property of Sso7d/Sac7d in the presence of a T-G mismatch base-pair. Detailed structural analysis revealed that the intercalation site includes the T-G mismatch base-pair and Sso7d/Sac7d bind to that mismatch base-pair in a manner similar to regular DNA. In the Sso7d-GTGATCGC complex, a new inter-strand hydrogen bond between T2O4 and C14N4 is formed and well-order bridging water molecules are found. The results suggest that the less stable DNA stacking site involving a T-G mismatch may be a preferred site for protein side-chain intercalation.
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==About this Structure==
==About this Structure==
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[[Category: T-g mismatch]]
[[Category: T-g mismatch]]
[[Category: X-ray crystallography]]
[[Category: X-ray crystallography]]
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Revision as of 17:21, 30 June 2008

File:1c8c.png

Template:STRUCTURE 1c8c

CRYSTAL STRUCTURES OF THE CHROMOSOMAL PROTEINS SSO7D/SAC7D BOUND TO DNA CONTAINING T-G MISMATCHED BASE PAIRS

Template:ABSTRACT PUBMED 11031116

About this Structure

1C8C is a Single protein structure of sequence from Sulfolobus solfataricus. Full crystallographic information is available from OCA.

Reference

Crystal structures of the chromosomal proteins Sso7d/Sac7d bound to DNA containing T-G mismatched base-pairs., Su S, Gao YG, Robinson H, Liaw YC, Edmondson SP, Shriver JW, Wang AH, J Mol Biol. 2000 Oct 27;303(3):395-403. PMID:11031116

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