1jy1

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[[Image:1jy1.jpg|left|200px]]
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{{Structure
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The line below this paragraph, containing "STRUCTURE_1jy1", creates the "Structure Box" on the page.
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1jy1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jy1 OCA], [http://www.ebi.ac.uk/pdbsum/1jy1 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1jy1 RCSB]</span>
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'''CRYSTAL STRUCTURE OF HUMAN TYROSYL-DNA PHOSPHODIESTERASE (TDP1)'''
'''CRYSTAL STRUCTURE OF HUMAN TYROSYL-DNA PHOSPHODIESTERASE (TDP1)'''
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[[Category: Hol, W G.J.]]
[[Category: Hol, W G.J.]]
[[Category: Interthal, H.]]
[[Category: Interthal, H.]]
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[[Category: pld superfamily]]
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[[Category: Pld superfamily]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 22:03:43 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:40:38 2008''
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Revision as of 19:03, 2 May 2008

Image:1jy1.jpg

Template:STRUCTURE 1jy1

CRYSTAL STRUCTURE OF HUMAN TYROSYL-DNA PHOSPHODIESTERASE (TDP1)


Overview

Tyrosyl-DNA phosphodiesterase (Tdp1) catalyzes the hydrolysis of a phosphodiester bond between a tyrosine residue and a DNA 3' phosphate. The enzyme appears to be responsible for repairing the unique protein-DNA linkage that occurs when eukaryotic topoisomerase I becomes stalled on the DNA in the cell. The 1.69 A crystal structure reveals that human Tdp1 is a monomer composed of two similar domains that are related by a pseudo-2-fold axis of symmetry. Each domain contributes conserved histidine, lysine, and asparagine residues to form a single active site. The structure of Tdp1 confirms that the protein has many similarities to the members of the phospholipase D (PLD) superfamily and indicates a similar catalytic mechanism. The structure also suggests how the unusual protein-DNA substrate binds and provides insights about the nature of the substrate in vivo.

About this Structure

1JY1 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

The crystal structure of human tyrosyl-DNA phosphodiesterase, Tdp1., Davies DR, Interthal H, Champoux JJ, Hol WG, Structure. 2002 Feb;10(2):237-48. PMID:11839309 Page seeded by OCA on Fri May 2 22:03:43 2008

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