1zxn
From Proteopedia
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| - | [[Image:1zxn.gif|left|200px]] | + | [[Image:1zxn.gif|left|200px]] |
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| - | '''Human DNA topoisomerase IIa ATPase/ADP''' | + | {{Structure |
| + | |PDB= 1zxn |SIZE=350|CAPTION= <scene name='initialview01'>1zxn</scene>, resolution 2.51Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ADP:ADENOSINE-5'-DIPHOSPHATE'>ADP</scene> and <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene> | ||
| + | |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= TOP2A, TOP2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | ||
| + | }} | ||
| + | |||
| + | '''Human DNA topoisomerase IIa ATPase/ADP''' | ||
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==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1ZXN is a [ | + | 1ZXN is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZXN OCA]. |
==Reference== | ==Reference== | ||
| - | Nucleotide-dependent domain movement in the ATPase domain of a human type IIA DNA topoisomerase., Wei H, Ruthenburg AJ, Bechis SK, Verdine GL, J Biol Chem. 2005 Nov 4;280(44):37041-7. Epub 2005 Aug 12. PMID:[http:// | + | Nucleotide-dependent domain movement in the ATPase domain of a human type IIA DNA topoisomerase., Wei H, Ruthenburg AJ, Bechis SK, Verdine GL, J Biol Chem. 2005 Nov 4;280(44):37041-7. Epub 2005 Aug 12. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16100112 16100112] |
[[Category: DNA topoisomerase (ATP-hydrolyzing)]] | [[Category: DNA topoisomerase (ATP-hydrolyzing)]] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
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[[Category: ghkl nucleotide-binding fold]] | [[Category: ghkl nucleotide-binding fold]] | ||
| - | ''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 15:41:03 2008'' |
Revision as of 13:41, 20 March 2008
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| , resolution 2.51Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , and | ||||||
| Gene: | TOP2A, TOP2 (Homo sapiens) | ||||||
| Activity: | DNA topoisomerase (ATP-hydrolyzing), with EC number 5.99.1.3 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Human DNA topoisomerase IIa ATPase/ADP
Contents |
Overview
Type IIA DNA topoisomerases play multiple essential roles in the management of higher-order DNA structure, including modulation of topological state, chromosome segregation, and chromatin condensation. These diverse physiologic functions are all accomplished through a common molecular mechanism, wherein the protein catalyzes transient cleavage of a DNA duplex (the G-segment) to yield a double-stranded gap through which another duplex (the T-segment) is passed. The overall process is orchestrated by the opening and closing of molecular "gates" in the topoisomerase structure, which is regulated by ATP binding, hydrolysis, and release of ADP and inorganic phosphate. Here we present two crystal structures of the ATPase domain of human DNA topoisomerase IIalpha in different nucleotide-bound states. Comparison of these structures revealed rigid-body movement of the structural modules within the ATPase domain, suggestive of the motions of a molecular gate.
Disease
Known diseases associated with this structure: DNA topoisomerase II, resistance to inhibition of, by amsacrine OMIM:[126430]
About this Structure
1ZXN is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Nucleotide-dependent domain movement in the ATPase domain of a human type IIA DNA topoisomerase., Wei H, Ruthenburg AJ, Bechis SK, Verdine GL, J Biol Chem. 2005 Nov 4;280(44):37041-7. Epub 2005 Aug 12. PMID:16100112
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