1woc: Difference between revisions
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|PDB= 1woc |SIZE=350|CAPTION= <scene name='initialview01'>1woc</scene>, resolution 2.Å | |PDB= 1woc |SIZE=350|CAPTION= <scene name='initialview01'>1woc</scene>, resolution 2.Å | ||
|SITE= | |SITE= | ||
|LIGAND= | |LIGAND= <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1woc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1woc OCA], [http://www.ebi.ac.uk/pdbsum/1woc PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1woc RCSB]</span> | |||
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[[Category: oligonucleotide binding fold]] | [[Category: oligonucleotide binding fold]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 00:38:55 2008'' | ||
Revision as of 00:38, 31 March 2008
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of PriB
OverviewOverview
PriB is not only an essential protein necessary for the replication restart on the collapsed and disintegrated replication fork, but also an important protein for assembling of primosome onto PhiX174 genomic DNA during replication initiation. Here we report a 2.0-A-resolution X-ray structure of a biologically functional form of PriB from Escherichia coli. The crystal structure revealed that despite a low level of primary sequence identity, the PriB monomer, as well as the dimeric form, are structurally identical to the N-terminal DNA-binding domain of the single-stranded DNA-binding protein (SSB) from Escherichia coli, which possesses an oligonucleotides-binding-fold. The oligonucleotide-PriB complex model based on the oligonucleotides-SSB complex structure suggested that PriB had a DNA-binding pocket conserved in SSB from Escherichia coli and might bind to single-stranded DNA in the manner of SSB. Furthermore, surface plasmon resonance analysis and fluorescence measurements demonstrated that PriB binds single-stranded DNA with high affinity, by involving tryptophan residue. The significance of these results with respect to the functional role of PriB in the assembly of primosome is discussed.
About this StructureAbout this Structure
1WOC is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structure of a biologically functional form of PriB from Escherichia coli reveals a potential single-stranded DNA-binding site., Shioi S, Ose T, Maenaka K, Shiroishi M, Abe Y, Kohda D, Katayama T, Ueda T, Biochem Biophys Res Commun. 2005 Jan 28;326(4):766-76. PMID:15607735
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