2ado

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{{STRUCTURE_2ado| PDB=2ado | SCENE= }}
{{STRUCTURE_2ado| PDB=2ado | SCENE= }}
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'''Crystal Structure Of The Brct Repeat Region From The Mediator of DNA damage checkpoint protein 1, MDC1'''
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===Crystal Structure Of The Brct Repeat Region From The Mediator of DNA damage checkpoint protein 1, MDC1===
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==Overview==
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MDC1 (mediator of DNA damage checkpoint protein 1) regulates the recognition and repair of DNA double strand breaks in mammalian cells through its interactions with nuclear foci containing the COOH-terminally phosphorylated form of the histone variant, H2AX. Here we demonstrate that the tandem BRCT repeats of MDC1 directly bind to the phosphorylated tail of H2AX-Ser(P)-Gln-Glu-Tyr, in a manner that is critically dependent on the free carboxylate group of the COOH-terminal Tyr residue. We have determined the x-ray crystal structure of the MDC1 BRCT repeats at 1.45 Angstroms resolution. By a comparison with the structure of the BRCA1 BRCT bound to a phosphopeptide, we suggest that two arginine residues in MDC1, Arg(1932) and Arg(1933) may recognize the COOH terminus of the peptide as well as the penultimate Glu of H2AX, while Gln(2013) may provide additional specificity for the COOH-terminal Tyr.
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(as it appears on PubMed at http://www.pubmed.gov), where 16049003 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16049003}}
==About this Structure==
==About this Structure==
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[[Category: Thede, G L.]]
[[Category: Thede, G L.]]
[[Category: Brct repeat]]
[[Category: Brct repeat]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 18:54:55 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 03:25:39 2008''

Revision as of 00:25, 28 July 2008

Template:STRUCTURE 2ado

Crystal Structure Of The Brct Repeat Region From The Mediator of DNA damage checkpoint protein 1, MDC1

Template:ABSTRACT PUBMED 16049003

About this Structure

2ADO is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structure of the BRCT repeat domain of MDC1 and its specificity for the free COOH-terminal end of the gamma-H2AX histone tail., Lee MS, Edwards RA, Thede GL, Glover JN, J Biol Chem. 2005 Sep 16;280(37):32053-6. Epub 2005 Jul 27. PMID:16049003

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