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| | ==Crystal structure of MukE-MukF(residues 292-443)-MukB(head domain)-ATPgammaS complex, asymmetric dimer== | | ==Crystal structure of MukE-MukF(residues 292-443)-MukB(head domain)-ATPgammaS complex, asymmetric dimer== |
| - | <StructureSection load='3euk' size='340' side='right' caption='[[3euk]], [[Resolution|resolution]] 4.00Å' scene=''> | + | <StructureSection load='3euk' size='340' side='right'caption='[[3euk]], [[Resolution|resolution]] 4.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3euk]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_ulceris_cancrosi"_kruse_1896 "bacillus ulceris cancrosi" kruse 1896]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3EUK OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3EUK FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3euk]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Haemophilus_ducreyi Haemophilus ducreyi] and [https://en.wikipedia.org/wiki/Haemophilus_ducreyi_35000HP Haemophilus ducreyi 35000HP]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3EUK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3EUK FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=AGS:PHOSPHOTHIOPHOSPHORIC+ACID-ADENYLATE+ESTER'>AGS</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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]] 4Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3euh|3euh]], [[3euj|3euj]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AGS:PHOSPHOTHIOPHOSPHORIC+ACID-ADENYLATE+ESTER'>AGS</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">mukB, HD_1582 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=730 "Bacillus ulceris cancrosi" Kruse 1896]), mukF, HD_1585 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=730 "Bacillus ulceris cancrosi" Kruse 1896]), mukE, HD_1584 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=730 "Bacillus ulceris cancrosi" Kruse 1896])</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=3euk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3euk OCA], [https://pdbe.org/3euk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3euk RCSB], [https://www.ebi.ac.uk/pdbsum/3euk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3euk 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=3euk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3euk OCA], [http://pdbe.org/3euk PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3euk RCSB], [http://www.ebi.ac.uk/pdbsum/3euk PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3euk ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/MUKB_HAEDU MUKB_HAEDU]] Plays a central role in chromosome condensation, segregation and cell cycle progression. Functions as a homodimer, which is essential for chromosome partition. Involved in negative DNA supercoiling in vivo, and by this means organize and compact chromosomes. May achieve or facilitate chromosome segregation by condensation DNA from both sides of a centrally located replisome during cell division (By similarity). [[http://www.uniprot.org/uniprot/MUKE_HAEDU MUKE_HAEDU]] Involved in chromosome condensation, segregation and cell cycle progression. May participate in facilitating chromosome segregation by condensation DNA from both sides of a centrally located replisome during cell division. Probably acts via its interaction with MukB and MukF (By similarity). [[http://www.uniprot.org/uniprot/MUKF_HAEDU MUKF_HAEDU]] Involved in chromosome condensation, segregation and cell cycle progression. May participate in facilitating chromosome segregation by condensation DNA from both sides of a centrally located replisome during cell division. Not required for mini-F plasmid partitioning. Probably acts via its interaction with MukB and MukE. Overexpression results in anucleate cells. It has a calcium binding activity (By similarity). | + | [https://www.uniprot.org/uniprot/MUKB_HAEDU MUKB_HAEDU] Plays a central role in chromosome condensation, segregation and cell cycle progression. Functions as a homodimer, which is essential for chromosome partition. Involved in negative DNA supercoiling in vivo, and by this means organize and compact chromosomes. May achieve or facilitate chromosome segregation by condensation DNA from both sides of a centrally located replisome during cell division (By similarity). |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| | Check<jmol> | | Check<jmol> |
| | <jmolCheckbox> | | <jmolCheckbox> |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/eu/3euk_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/eu/3euk_consurf.spt"</scriptWhenChecked> |
| | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
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| | </div> | | </div> |
| | <div class="pdbe-citations 3euk" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 3euk" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Condensin|Condensin]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacillus ulceris cancrosi kruse 1896]] | + | [[Category: Large Structures]] |
| - | [[Category: Lim, J H]] | + | [[Category: Lim JH]] |
| - | [[Category: Oh, B H]] | + | [[Category: Oh BH]] |
| - | [[Category: Shin, H C]] | + | [[Category: Shin HC]] |
| - | [[Category: Woo, J S]] | + | [[Category: Woo JS]] |
| - | [[Category: Abc-type atpase]]
| + | |
| - | [[Category: Atp-binding]]
| + | |
| - | [[Category: Cell cycle]]
| + | |
| - | [[Category: Cell division]]
| + | |
| - | [[Category: Chromosome condensation]]
| + | |
| - | [[Category: Chromosome partition]]
| + | |
| - | [[Category: Condensin]]
| + | |
| - | [[Category: Dna condensation]]
| + | |
| - | [[Category: Dna-binding]]
| + | |
| - | [[Category: Mukb]]
| + | |
| - | [[Category: Muke]]
| + | |
| - | [[Category: Mukf]]
| + | |
| - | [[Category: Non-smc subunit]]
| + | |
| - | [[Category: Nucleotide-binding]]
| + | |
| - | [[Category: Smc]]
| + | |
| - | [[Category: Whd]]
| + | |
| Structural highlights
Function
MUKB_HAEDU Plays a central role in chromosome condensation, segregation and cell cycle progression. Functions as a homodimer, which is essential for chromosome partition. Involved in negative DNA supercoiling in vivo, and by this means organize and compact chromosomes. May achieve or facilitate chromosome segregation by condensation DNA from both sides of a centrally located replisome during cell division (By similarity).
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
Condensins are key mediators of chromosome condensation across organisms. Like other condensins, the bacterial MukBEF condensin complex consists of an SMC family protein dimer containing two ATPase head domains, MukB, and two interacting subunits, MukE and MukF. We report complete structural views of the intersubunit interactions of this condensin along with ensuing studies that reveal a role for the ATPase activity of MukB. MukE and MukF together form an elongated dimeric frame, and MukF's C-terminal winged-helix domains (C-WHDs) bind MukB heads to constitute closed ring-like structures. Surprisingly, one of the two bound C-WHDs is forced to detach upon ATP-mediated engagement of MukB heads. This detachment reaction depends on the linker segment preceding the C-WHD, and mutations on the linker restrict cell growth. Thus ATP-dependent transient disruption of the MukB-MukF interaction, which creates openings in condensin ring structures, is likely to be a critical feature of the functional mechanism of condensins.
Structural studies of a bacterial condensin complex reveal ATP-dependent disruption of intersubunit interactions.,Woo JS, Lim JH, Shin HC, Suh MK, Ku B, Lee KH, Joo K, Robinson H, Lee J, Park SY, Ha NC, Oh BH Cell. 2009 Jan 9;136(1):85-96. PMID:19135891[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Woo JS, Lim JH, Shin HC, Suh MK, Ku B, Lee KH, Joo K, Robinson H, Lee J, Park SY, Ha NC, Oh BH. Structural studies of a bacterial condensin complex reveal ATP-dependent disruption of intersubunit interactions. Cell. 2009 Jan 9;136(1):85-96. PMID:19135891 doi:10.1016/j.cell.2008.10.050
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