2ius
From Proteopedia
(New page: 200px<br /><applet load="2ius" size="450" color="white" frame="true" align="right" spinBox="true" caption="2ius, resolution 2.7Å" /> '''E. COLI FTSK MOTOR DO...) |
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| - | [[Image:2ius.jpg|left|200px]]<br /><applet load="2ius" size=" | + | [[Image:2ius.jpg|left|200px]]<br /><applet load="2ius" size="350" color="white" frame="true" align="right" spinBox="true" |
caption="2ius, resolution 2.7Å" /> | caption="2ius, resolution 2.7Å" /> | ||
'''E. COLI FTSK MOTOR DOMAIN'''<br /> | '''E. COLI FTSK MOTOR DOMAIN'''<br /> | ||
==Overview== | ==Overview== | ||
| - | FtsK is a DNA translocase that coordinates chromosome segregation and cell | + | FtsK is a DNA translocase that coordinates chromosome segregation and cell division in bacteria. In addition to its role as activator of XerCD site-specific recombination, FtsK can translocate double-stranded DNA (dsDNA) rapidly and directionally and reverse direction. We present crystal structures of the FtsK motor domain monomer, showing that it has a RecA-like core, the FtsK hexamer, and also showing that it is a ring with a large central annulus and a dodecamer consisting of two hexamers, head to head. Electron microscopy (EM) demonstrates the DNA-dependent existence of hexamers in solution and shows that duplex DNA passes through the middle of each ring. Comparison of FtsK monomer structures from two different crystal forms highlights a conformational change that we propose is the structural basis for a rotary inchworm mechanism of DNA translocation. |
==About this Structure== | ==About this Structure== | ||
| - | 2IUS is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http:// | + | 2IUS is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of 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=2IUS OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Lowe, J.]] | [[Category: Lowe, J.]] | ||
| - | [[Category: Massey, T | + | [[Category: Massey, T H.]] |
| - | [[Category: Mercogliano, C | + | [[Category: Mercogliano, C P.]] |
| - | [[Category: Sherratt, D | + | [[Category: Sherratt, D J.]] |
[[Category: Yates, J.]] | [[Category: Yates, J.]] | ||
[[Category: aaa atpase]] | [[Category: aaa atpase]] | ||
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[[Category: transmembrane]] | [[Category: transmembrane]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 17:56:14 2008'' |
Revision as of 15:56, 21 February 2008
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E. COLI FTSK MOTOR DOMAIN
Overview
FtsK is a DNA translocase that coordinates chromosome segregation and cell division in bacteria. In addition to its role as activator of XerCD site-specific recombination, FtsK can translocate double-stranded DNA (dsDNA) rapidly and directionally and reverse direction. We present crystal structures of the FtsK motor domain monomer, showing that it has a RecA-like core, the FtsK hexamer, and also showing that it is a ring with a large central annulus and a dodecamer consisting of two hexamers, head to head. Electron microscopy (EM) demonstrates the DNA-dependent existence of hexamers in solution and shows that duplex DNA passes through the middle of each ring. Comparison of FtsK monomer structures from two different crystal forms highlights a conformational change that we propose is the structural basis for a rotary inchworm mechanism of DNA translocation.
About this Structure
2IUS is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Double-stranded DNA translocation: structure and mechanism of hexameric FtsK., Massey TH, Mercogliano CP, Yates J, Sherratt DJ, Lowe J, Mol Cell. 2006 Aug;23(4):457-69. PMID:16916635
Page seeded by OCA on Thu Feb 21 17:56:14 2008
Categories: Escherichia coli | Single protein | Lowe, J. | Massey, T H. | Mercogliano, C P. | Sherratt, D J. | Yates, J. | Aaa atpase | Atp-binding | Cell cycle | Cell division | Chromosome partition | Divisome | Dna translocation | Dna-binding | Hexameric ring | Inner membrane | Kops | Membrane | Membrane protein | Nucleotide-binding | Transmembrane
