|
|
| (One intermediate revision not shown.) |
| Line 1: |
Line 1: |
| | | | |
| | ==Escherichia Coli Replication Terminator Protein (Tus) Complexed With DNA- Locked form== | | ==Escherichia Coli Replication Terminator Protein (Tus) Complexed With DNA- Locked form== |
| - | <StructureSection load='2ewj' size='340' side='right' caption='[[2ewj]], [[Resolution|resolution]] 2.70Å' scene=''> | + | <StructureSection load='2ewj' size='340' side='right'caption='[[2ewj]], [[Resolution|resolution]] 2.70Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2ewj]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EWJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2EWJ FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2ewj]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EWJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EWJ FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ecr|1ecr]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IOD:IODIDE+ION'>IOD</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">tus ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ewj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ewj OCA], [https://pdbe.org/2ewj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ewj RCSB], [https://www.ebi.ac.uk/pdbsum/2ewj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ewj ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ewj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ewj OCA], [http://pdbe.org/2ewj PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ewj RCSB], [http://www.ebi.ac.uk/pdbsum/2ewj PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2ewj ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/TUS_ECOLI TUS_ECOLI]] Trans-acting protein required for termination of DNA replication. Binds to DNA replication terminator sequences (terA to terF) to prevent the passage of replication forks. The termination efficiency will be affected by the affinity of this protein for the terminator sequence. | + | [https://www.uniprot.org/uniprot/TUS_ECOLI TUS_ECOLI] Trans-acting protein required for termination of DNA replication. Binds to DNA replication terminator sequences (terA to terF) to prevent the passage of replication forks. The termination efficiency will be affected by the affinity of this protein for the terminator sequence. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Line 32: |
Line 31: |
| | | | |
| | ==See Also== | | ==See Also== |
| - | *[[Bacterial Replication Termination|Bacterial Replication Termination]] | + | *[[Replication Termination Protein|Replication Termination Protein]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacillus coli migula 1895]] | + | [[Category: Escherichia coli]] |
| - | [[Category: Dixon, N E]] | + | [[Category: Large Structures]] |
| - | [[Category: Mulcair, M D]] | + | [[Category: Dixon NE]] |
| - | [[Category: Oakley, A J]] | + | [[Category: Mulcair MD]] |
| - | [[Category: Schaeffer, P M]] | + | [[Category: Oakley AJ]] |
| - | [[Category: Protein-dna interaction]] | + | [[Category: Schaeffer PM]] |
| - | [[Category: Replication arrest]]
| + | |
| - | [[Category: Replication-dna complex]]
| + | |
| - | [[Category: Terminus site]]
| + | |
| - | [[Category: Tus]]
| + | |
| Structural highlights
Function
TUS_ECOLI Trans-acting protein required for termination of DNA replication. Binds to DNA replication terminator sequences (terA to terF) to prevent the passage of replication forks. The termination efficiency will be affected by the affinity of this protein for the terminator sequence.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
During chromosome synthesis in Escherichia coli, replication forks are blocked by Tus bound Ter sites on approach from one direction but not the other. To study the basis of this polarity, we measured the rates of dissociation of Tus from forked TerB oligonucleotides, such as would be produced by the replicative DnaB helicase at both the fork-blocking (nonpermissive) and permissive ends of the Ter site. Strand separation of a few nucleotides at the permissive end was sufficient to force rapid dissociation of Tus to allow fork progression. In contrast, strand separation extending to and including the strictly conserved G-C(6) base pair at the nonpermissive end led to formation of a stable locked complex. Lock formation specifically requires the cytosine residue, C(6). The crystal structure of the locked complex showed that C(6) moves 14 A from its normal position to bind in a cytosine-specific pocket on the surface of Tus.
A molecular mousetrap determines polarity of termination of DNA replication in E. coli.,Mulcair MD, Schaeffer PM, Oakley AJ, Cross HF, Neylon C, Hill TM, Dixon NE Cell. 2006 Jun 30;125(7):1309-19. PMID:16814717[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Mulcair MD, Schaeffer PM, Oakley AJ, Cross HF, Neylon C, Hill TM, Dixon NE. A molecular mousetrap determines polarity of termination of DNA replication in E. coli. Cell. 2006 Jun 30;125(7):1309-19. PMID:16814717 doi:10.1016/j.cell.2006.04.040
|
