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2ihf

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{{STRUCTURE_2ihf| PDB=2ihf | SCENE= }}
{{STRUCTURE_2ihf| PDB=2ihf | SCENE= }}
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'''Crystal structure of deletion mutant delta 228-252 R190A of the single-stranded DNA binding protein from Thermus aquaticus'''
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===Crystal structure of deletion mutant delta 228-252 R190A of the single-stranded DNA binding protein from Thermus aquaticus===
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==Overview==
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In contrast to the majority of tetrameric SSB proteins, the recently discovered SSB proteins from the Thermus/Deinoccus group form dimers. We solved the crystal structures of the SSB protein from Thermus aquaticus (TaqSSB) and a deletion mutant of the protein and show the structure of their ssDNA binding domains to be similar to the structure of tetrameric SSBs. Two conformations accompanied by proline cis-trans isomerization are observed in the flexible C-terminal region. For the first time, we were able to trace 6 out of 10 amino acids at the C-terminus of an SSB protein. This highly conserved region is essential for interaction with other proteins and we show it to adopt an extended conformation devoid of secondary structure. A model for binding this region to the chi subunit of DNA polymerase III is proposed. It explains at a molecular level the reason for the ssb113 phenotype observed in Escherichia coli.
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{{ABSTRACT_PUBMED_17148487}}
==About this Structure==
==About this Structure==
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[[Category: Protein-protein interaction]]
[[Category: Protein-protein interaction]]
[[Category: Thermophile organism]]
[[Category: Thermophile organism]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 07:30:22 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 12:22:50 2008''

Revision as of 09:22, 27 July 2008

Image:2ihf.png

Template:STRUCTURE 2ihf

Crystal structure of deletion mutant delta 228-252 R190A of the single-stranded DNA binding protein from Thermus aquaticus

Template:ABSTRACT PUBMED 17148487

About this Structure

2IHF is a Single protein structure of sequence from Thermus aquaticus. Full crystallographic information is available from OCA.

Reference

3D structure of Thermus aquaticus single-stranded DNA-binding protein gives insight into the functioning of SSB proteins., Fedorov R, Witte G, Urbanke C, Manstein DJ, Curth U, Nucleic Acids Res. 2006;34(22):6708-17. Epub 2006 Dec 5. PMID:17148487

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