1a41: Difference between revisions
No edit summary |
No edit summary |
||
| Line 4: | Line 4: | ||
|PDB= 1a41 |SIZE=350|CAPTION= <scene name='initialview01'>1a41</scene>, resolution 2.3Å | |PDB= 1a41 |SIZE=350|CAPTION= <scene name='initialview01'>1a41</scene>, resolution 2.3Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene> | |LIGAND= <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> | ||
|ACTIVITY= [http://en.wikipedia.org/wiki/DNA_topoisomerase DNA topoisomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.99.1.2 5.99.1.2] | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA_topoisomerase DNA topoisomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.99.1.2 5.99.1.2] </span> | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1a41 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a41 OCA], [http://www.ebi.ac.uk/pdbsum/1a41 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1a41 RCSB]</span> | |||
}} | }} | ||
| Line 27: | Line 30: | ||
[[Category: Pavletich, N.]] | [[Category: Pavletich, N.]] | ||
[[Category: Shuman, S.]] | [[Category: Shuman, S.]] | ||
[[Category: isomerase]] | [[Category: isomerase]] | ||
[[Category: type 1b topoisomerase]] | [[Category: type 1b topoisomerase]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 18:32:46 2008'' | ||
Revision as of 18:32, 30 March 2008
| |||||||
| , resolution 2.3Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Activity: | DNA topoisomerase, with EC number 5.99.1.2 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
TYPE 1-TOPOISOMERASE CATALYTIC FRAGMENT FROM VACCINIA VIRUS
OverviewOverview
Vaccinia DNA topoisomerase breaks and rejoins DNA strands through a DNA-(3'-phosphotyrosyl)-enzyme intermediate. A C-terminal catalytic domain, Topo(81-314), suffices for transesterification chemistry. The domain contains a constellation of five amino acids, conserved in all eukaryotic type IB topoisomerases, that catalyzes attack of the tyrosine nucleophile on the scissile phosphate. The structure of the catalytic domain, consisting of ten alpha helices and a three-strand beta sheet, resembles the catalytic domains of site-specific recombinases that act via a topoisomerase IB-like mechanism. The topoisomerase catalytic pentad is conserved in the tertiary structures of the recombinases despite scant sequence similarity overall. This implies that the catalytic domains of type IB topoisomerases and recombinases derive from a common ancestral strand transferase.
About this StructureAbout this Structure
1A41 is a Single protein structure of sequence from Vaccinia virus. Full crystallographic information is available from OCA.
ReferenceReference
Conservation of structure and mechanism between eukaryotic topoisomerase I and site-specific recombinases., Cheng C, Kussie P, Pavletich N, Shuman S, Cell. 1998 Mar 20;92(6):841-50. PMID:9529259
Page seeded by OCA on Sun Mar 30 18:32:46 2008