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1uw0

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[[Image:1uw0.gif|left|200px]]
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{{Seed}}
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[[Image:1uw0.png|left|200px]]
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{{STRUCTURE_1uw0| PDB=1uw0 | SCENE= }}
{{STRUCTURE_1uw0| PDB=1uw0 | SCENE= }}
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'''SOLUTION STRUCTURE OF THE ZINC-FINGER DOMAIN FROM DNA LIGASE IIIA'''
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===SOLUTION STRUCTURE OF THE ZINC-FINGER DOMAIN FROM DNA LIGASE IIIA===
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==Overview==
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DNA ligase IIIalpha carries out the final ligation step in the base excision repair (BER) and single strand break repair (SSBR) mechanisms of DNA repair. The enzyme recognises single-strand nicks and other damage features in double-stranded DNA, both through the catalytic domain and an N-terminal domain containing a single zinc finger. The latter is homologous to other zinc fingers that recognise damaged DNA, two in the N terminus of poly(adenosine-ribose)polymerase and three in the N terminus of the Arabidopsis thaliana nick-sensing DNA 3'-phosphoesterase. Here, we present the solution structure of the zinc-finger domain of human DNA ligase IIIalpha, the first structure of a finger from this group. It is related to that of the erythroid transcription factor GATA-1, but has an additional N-terminal beta-strand and C-terminal alpha-helix. Chemical shift mapping using a DNA ligand containing a single-stranded break showed that the DNA-binding surface of the DNA-ligase IIIalpha zinc finger is substantially different from that of GATA-1, consistent with the fact that the two proteins recognise very different features in the DNA. Likely implications for DNA binding are discussed.
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The line below this paragraph, {{ABSTRACT_PUBMED_15288782}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 15288782 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15288782}}
==About this Structure==
==About this Structure==
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1UW0 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=1UW0 OCA].
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1UW0 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UW0 OCA].
==Reference==
==Reference==
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[[Category: Parp-like finger]]
[[Category: Parp-like finger]]
[[Category: Zinc finger]]
[[Category: Zinc finger]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 11:45:34 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 01:47:11 2008''

Revision as of 22:47, 28 July 2008

Image:1uw0.png

Template:STRUCTURE 1uw0

SOLUTION STRUCTURE OF THE ZINC-FINGER DOMAIN FROM DNA LIGASE IIIA

Template:ABSTRACT PUBMED 15288782

About this Structure

1UW0 is a Single protein structure of sequence from Homo sapiens. Full experimental information is available from OCA.

Reference

Solution structure and DNA binding of the zinc-finger domain from DNA ligase IIIalpha., Kulczyk AW, Yang JC, Neuhaus D, J Mol Biol. 2004 Aug 13;341(3):723-38. PMID:15288782

Page seeded by OCA on Tue Jul 29 01:47:11 2008

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