1suu
From Proteopedia
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| - | [[Image:1suu.gif|left|200px]] | + | [[Image:1suu.gif|left|200px]] |
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| - | '''Structure of DNA gyrase A C-terminal domain''' | + | {{Structure |
| + | |PDB= 1suu |SIZE=350|CAPTION= <scene name='initialview01'>1suu</scene>, resolution 1.75Å | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/DNA_topoisomerase_(ATP-hydrolyzing) DNA topoisomerase (ATP-hydrolyzing)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.99.1.3 5.99.1.3] | ||
| + | |GENE= GYRA, BB0435 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=139 Borrelia burgdorferi]) | ||
| + | }} | ||
| + | |||
| + | '''Structure of DNA gyrase A C-terminal domain''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1SUU is a [ | + | 1SUU is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Borrelia_burgdorferi Borrelia burgdorferi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SUU OCA]. |
==Reference== | ==Reference== | ||
| - | The C-terminal domain of DNA gyrase A adopts a DNA-bending beta-pinwheel fold., Corbett KD, Shultzaberger RK, Berger JM, Proc Natl Acad Sci U S A. 2004 May 11;101(19):7293-8. Epub 2004 May 3. PMID:[http:// | + | The C-terminal domain of DNA gyrase A adopts a DNA-bending beta-pinwheel fold., Corbett KD, Shultzaberger RK, Berger JM, Proc Natl Acad Sci U S A. 2004 May 11;101(19):7293-8. Epub 2004 May 3. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15123801 15123801] |
[[Category: Borrelia burgdorferi]] | [[Category: Borrelia burgdorferi]] | ||
[[Category: DNA topoisomerase (ATP-hydrolyzing)]] | [[Category: DNA topoisomerase (ATP-hydrolyzing)]] | ||
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[[Category: topoisomerase]] | [[Category: topoisomerase]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:09:54 2008'' |
Revision as of 12:09, 20 March 2008
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| , resolution 1.75Å | |||||||
|---|---|---|---|---|---|---|---|
| Gene: | GYRA, BB0435 (Borrelia burgdorferi) | ||||||
| Activity: | DNA topoisomerase (ATP-hydrolyzing), with EC number 5.99.1.3 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of DNA gyrase A C-terminal domain
Overview
DNA gyrase is unique among enzymes for its ability to actively introduce negative supercoils into DNA. This function is mediated in part by the C-terminal domain of its A subunit (GyrA CTD). Here, we report the crystal structure of this approximately 35-kDa domain determined to 1.75-A resolution. The GyrA CTD unexpectedly adopts an unusual fold, which we term a beta-pinwheel, that is globally reminiscent of a beta-propeller but is built of blades with a previously unobserved topology. A large, conserved basic patch on the outer edge of this domain suggests a likely site for binding and bending DNA; fluorescence resonance energy transfer-based assays show that the GyrA CTD is capable of bending DNA by > or =180 degrees over a 40-bp region. Surprisingly, we find that the CTD of the topoisomerase IV A subunit, which shares limited sequence homology with the GyrA CTD, also bends DNA. Together, these data provide a physical explanation for the ability of DNA gyrase to constrain a positive superhelical DNA wrap, and also suggest that the particular substrate preferences of topoisomerase IV might be dictated in part by the function of this domain.
About this Structure
1SUU is a Single protein structure of sequence from Borrelia burgdorferi. Full crystallographic information is available from OCA.
Reference
The C-terminal domain of DNA gyrase A adopts a DNA-bending beta-pinwheel fold., Corbett KD, Shultzaberger RK, Berger JM, Proc Natl Acad Sci U S A. 2004 May 11;101(19):7293-8. Epub 2004 May 3. PMID:15123801
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