4a6j: Difference between revisions
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[[ | ==Structural model of ParM filament based on CryoEM map== | ||
<StructureSection load='4a6j' size='340' side='right' caption='[[4a6j]], [[Resolution|resolution]] 7.20Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4a6j]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4A6J OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4A6J FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1mwk|1mwk]], [[4a61|4a61]], [[1mwm|1mwm]], [[4a62|4a62]]</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=4a6j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4a6j OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4a6j RCSB], [http://www.ebi.ac.uk/pdbsum/4a6j PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
To ensure their stable inheritance by daughter cells during cell division, bacterial low copy-number plasmids make simple DNA segregating machines that use an elongating protein filament between sister plasmids. In the ParMRC system of Escherichia coli R1 plasmid, ParM, an actin-like protein, forms the spindle between ParRC complexes on sister plasmids. Using a combination of structural work and total internal reflection fluorescence microscopy, we show that ParRC bound and could accelerate growth at only one end of polar ParM filaments, mechanistically resembling eukaryotic formins. The architecture of ParM filaments enabled two ParRC-bound filaments to associate in an antiparallel orientation, forming a bipolar spindle. The spindle elongated as a bundle of at least two antiparallel filaments, thereby pushing two plasmid clusters toward the poles. | |||
A Bipolar Spindle of Antiparallel ParM Filaments Drives Bacterial Plasmid Segregation.,Gayathri P, Fujii T, Moller-Jensen J, van den Ent F, Namba K, Lowe J Science. 2012 Oct 25. PMID:23112295<ref>PMID:23112295</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
== | __TOC__ | ||
</StructureSection> | |||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: Ent, F Van Den | [[Category: Ent, F Van Den]] | ||
[[Category: Fujii, T | [[Category: Fujii, T]] | ||
[[Category: Gayathri, P | [[Category: Gayathri, P]] | ||
[[Category: Lowe, J | [[Category: Lowe, J]] | ||
[[Category: Moller-Jensen, J | [[Category: Moller-Jensen, J]] | ||
[[Category: Namba, K | [[Category: Namba, K]] | ||
[[Category: Transport protein]] | [[Category: Transport protein]] | ||
Revision as of 19:36, 9 December 2014
Structural model of ParM filament based on CryoEM mapStructural model of ParM filament based on CryoEM map
Structural highlights
Publication Abstract from PubMedTo ensure their stable inheritance by daughter cells during cell division, bacterial low copy-number plasmids make simple DNA segregating machines that use an elongating protein filament between sister plasmids. In the ParMRC system of Escherichia coli R1 plasmid, ParM, an actin-like protein, forms the spindle between ParRC complexes on sister plasmids. Using a combination of structural work and total internal reflection fluorescence microscopy, we show that ParRC bound and could accelerate growth at only one end of polar ParM filaments, mechanistically resembling eukaryotic formins. The architecture of ParM filaments enabled two ParRC-bound filaments to associate in an antiparallel orientation, forming a bipolar spindle. The spindle elongated as a bundle of at least two antiparallel filaments, thereby pushing two plasmid clusters toward the poles. A Bipolar Spindle of Antiparallel ParM Filaments Drives Bacterial Plasmid Segregation.,Gayathri P, Fujii T, Moller-Jensen J, van den Ent F, Namba K, Lowe J Science. 2012 Oct 25. PMID:23112295[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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