2w3o: Difference between revisions

Revision as of 02:08, 1 October 2014

CRYSTAL STRUCTURE OF THE HUMAN PNKP FHA DOMAIN IN COMPLEX WITH AN XRCC1-DERIVED PHOSPHOPEPTIDE

Structural highlights

2w3o is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	CA
NonStd Res:	SEP, TPO
Related:	1cdz, 1xnt, 2brf, 1xna, 2d8m
Resources:	FirstGlance, OCA, RCSB, PDBsum

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Short-patch repair of DNA single-strand breaks and gaps (SSB) is coordinated by XRCC1, a scaffold protein that recruits the DNA polymerase and DNA ligase required for filling and sealing the damaged strand. XRCC1 can also recruit end-processing enzymes, such as PNK (polynucleotide kinase 3'-phosphatase), Aprataxin and APLF (aprataxin/PNK-like factor), which ensure the availability of a free 3'-hydroxyl on one side of the gap, and a 5'-phosphate group on the other, for the polymerase and ligase reactions respectively. PNK binds to a phosphorylated segment of XRCC1 (between its two C-terminal BRCT domains) via its Forkhead-associated (FHA) domain. We show here, contrary to previous studies, that the FHA domain of PNK binds specifically, and with high affinity to a multiply phosphorylated motif in XRCC1 containing a pSer-pThr dipeptide, and forms a 2:1 PNK:XRCC1 complex. The high-resolution crystal structure of a PNK-FHA-XRCC1 phosphopeptide complex reveals the basis for this unusual bis-phosphopeptide recognition, which is probably a common feature of the known XRCC1-associating end-processing enzymes.

Specific recognition of a multiply phosphorylated motif in the DNA repair scaffold XRCC1 by the FHA domain of human PNK.,Ali AA, Jukes RM, Pearl LH, Oliver AW Nucleic Acids Res. 2009 Jan 20. PMID:19155274^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Ali AA, Jukes RM, Pearl LH, Oliver AW. Specific recognition of a multiply phosphorylated motif in the DNA repair scaffold XRCC1 by the FHA domain of human PNK. Nucleic Acids Res. 2009 Jan 20. PMID:19155274 doi:gkn1086

Proteopedia Page Contributors and Editors (what is this?)

OCA

[1] Ali AA, Jukes RM, Pearl LH, Oliver AW. Specific recognition of a multiply phosphorylated motif in the DNA repair scaffold XRCC1 by the FHA domain of human PNK. Nucleic Acids Res. 2009 Jan 20. PMID:19155274 doi:gkn1086

[1]

@@ Line 1: / Line 1: @@
-{{STRUCTURE_2w3o|  PDB=2w3o  |  SCENE=  }}
+==CRYSTAL STRUCTURE OF THE HUMAN PNKP FHA DOMAIN IN COMPLEX WITH AN XRCC1-DERIVED PHOSPHOPEPTIDE==
-===CRYSTAL STRUCTURE OF THE HUMAN PNKP FHA DOMAIN IN COMPLEX WITH AN XRCC1-DERIVED PHOSPHOPEPTIDE===
+<StructureSection load='2w3o' size='340' side='right' caption='[[2w3o]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
-{{ABSTRACT_PUBMED_19155274}}
+== Structural highlights ==
+<table><tr><td colspan='2'>[[2w3o]] is a 4 chain structure with 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=2W3O OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2W3O FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene><br>
+<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene>, <scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene></td></tr>
+<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1cdz|1cdz]], [[1xnt|1xnt]], [[2brf|2brf]], [[1xna|1xna]], [[2d8m|2d8m]]</td></tr>
+<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2w3o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2w3o OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2w3o RCSB], [http://www.ebi.ac.uk/pdbsum/2w3o PDBsum]</span></td></tr>
+<table>
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/w3/2w3o_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
+  </jmolCheckbox>
+</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Short-patch repair of DNA single-strand breaks and gaps (SSB) is coordinated by XRCC1, a scaffold protein that recruits the DNA polymerase and DNA ligase required for filling and sealing the damaged strand. XRCC1 can also recruit end-processing enzymes, such as PNK (polynucleotide kinase 3'-phosphatase), Aprataxin and APLF (aprataxin/PNK-like factor), which ensure the availability of a free 3'-hydroxyl on one side of the gap, and a 5'-phosphate group on the other, for the polymerase and ligase reactions respectively. PNK binds to a phosphorylated segment of XRCC1 (between its two C-terminal BRCT domains) via its Forkhead-associated (FHA) domain. We show here, contrary to previous studies, that the FHA domain of PNK binds specifically, and with high affinity to a multiply phosphorylated motif in XRCC1 containing a pSer-pThr dipeptide, and forms a 2:1 PNK:XRCC1 complex. The high-resolution crystal structure of a PNK-FHA-XRCC1 phosphopeptide complex reveals the basis for this unusual bis-phosphopeptide recognition, which is probably a common feature of the known XRCC1-associating end-processing enzymes.
-==Function==
+Specific recognition of a multiply phosphorylated motif in the DNA repair scaffold XRCC1 by the FHA domain of human PNK.,Ali AA, Jukes RM, Pearl LH, Oliver AW Nucleic Acids Res. 2009 Jan 20. PMID:19155274<ref>PMID:19155274</ref>
-[[http://www.uniprot.org/uniprot/XRCC1_HUMAN XRCC1_HUMAN]] Corrects defective DNA strand-break repair and sister chromatid exchange following treatment with ionizing radiation and alkylating agents.
-==About this Structure==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-[[2w3o]] is a 4 chain structure with 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=2W3O OCA].
+</div>
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:019155274</ref><references group="xtra"/><references/>
+__TOC__
+</StructureSection>
 [[Category: Homo sapiens]]
 [[Category: Ali, A A.E.]]

2w3o: Difference between revisions

Revision as of 02:08, 1 October 2014

CRYSTAL STRUCTURE OF THE HUMAN PNKP FHA DOMAIN IN COMPLEX WITH AN XRCC1-DERIVED PHOSPHOPEPTIDE

Structural highlights

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Navigation menu

Page actions

Page actions

Personal tools

Navigation

Search

Tools