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[[Image:1ue6.gif|left|200px]]
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[[Image:1ue6.png|left|200px]]


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{{STRUCTURE_1ue6|  PDB=1ue6  |  SCENE=  }}  
{{STRUCTURE_1ue6|  PDB=1ue6  |  SCENE=  }}  


'''Crystal structure of the single-stranded dna-binding protein from mycobacterium tuberculosis'''
===Crystal structure of the single-stranded dna-binding protein from mycobacterium tuberculosis===




==Overview==
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Single-stranded DNA-binding protein (SSB) is an essential protein necessary for the functioning of the DNA replication, repair and recombination machineries. Here we report the structure of the DNA-binding domain of Mycobacterium tuberculosis SSB (MtuSSB) in four different crystals distributed in two forms. The structure of one of the forms was solved by a combination of isomorphous replacement and anomalous scattering. This structure was used to determine the structure of the other form by molecular replacement. The polypeptide chain in the structure exhibits the oligonucleotide binding fold. The globular core of the molecule in different subunits in the two forms and those in Escherichia coli SSB (EcoSSB) and human mitochondrial SSB (HMtSSB) have similar structure, although the three loops exhibit considerable structural variation. However, the tetrameric MtuSSB has an as yet unobserved quaternary association. This quaternary structure with a unique dimeric interface lends the oligomeric protein greater stability, which may be of significance to the functioning of the protein under conditions of stress. Also, as a result of the variation in the quaternary structure the path adopted by the DNA to wrap around MtuSSB is expected to be different from that of EcoSSB.
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==About this Structure==
==About this Structure==
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==Reference==
==Reference==
Structure of Mycobacterium tuberculosis single-stranded DNA-binding protein. Variability in quaternary structure and its implications., Saikrishnan K, Jeyakanthan J, Venkatesh J, Acharya N, Sekar K, Varshney U, Vijayan M, J Mol Biol. 2003 Aug 8;331(2):385-93. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12888346 12888346]
Structure of Mycobacterium tuberculosis single-stranded DNA-binding protein. Variability in quaternary structure and its implications., Saikrishnan K, Jeyakanthan J, Venkatesh J, Acharya N, Sekar K, Varshney U, Vijayan M, J Mol Biol. 2003 Aug 8;331(2):385-93. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12888346 12888346]
Crystallization and preliminary X-ray studies of the single-stranded DNA-binding protein from Mycobacterium tuberculosis., Saikrishnan K, Jeyakanthan J, Venkatesh J, Acharya N, Purnapatre K, Sekar K, Varshney U, Vijayan M, Acta Crystallogr D Biol Crystallogr. 2002 Feb;58(Pt 2):327-9. Epub 2002, Jan 24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11807266 11807266]
[[Category: Mycobacterium tuberculosis]]
[[Category: Mycobacterium tuberculosis]]
[[Category: Single protein]]
[[Category: Single protein]]
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[[Category: Tb structural genomics consortium]]
[[Category: Tb structural genomics consortium]]
[[Category: Tbsgc]]
[[Category: Tbsgc]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 11:05:49 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 07:04:15 2008''

Revision as of 04:04, 29 July 2008

File:1ue6.png

Template:STRUCTURE 1ue6

Crystal structure of the single-stranded dna-binding protein from mycobacterium tuberculosis

Template:ABSTRACT PUBMED 12888346

About this Structure

1UE6 is a Single protein structure of sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA.

Reference

Structure of Mycobacterium tuberculosis single-stranded DNA-binding protein. Variability in quaternary structure and its implications., Saikrishnan K, Jeyakanthan J, Venkatesh J, Acharya N, Sekar K, Varshney U, Vijayan M, J Mol Biol. 2003 Aug 8;331(2):385-93. PMID:12888346

Crystallization and preliminary X-ray studies of the single-stranded DNA-binding protein from Mycobacterium tuberculosis., Saikrishnan K, Jeyakanthan J, Venkatesh J, Acharya N, Purnapatre K, Sekar K, Varshney U, Vijayan M, Acta Crystallogr D Biol Crystallogr. 2002 Feb;58(Pt 2):327-9. Epub 2002, Jan 24. PMID:11807266

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