2pqu

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[[Image:2pqu.gif|left|200px]]
[[Image:2pqu.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 2pqu |SIZE=350|CAPTION= <scene name='initialview01'>2pqu</scene>, resolution 2.12&Aring;
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The line below this paragraph, containing "STRUCTURE_2pqu", creates the "Structure Box" on the page.
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|SITE=
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=DA:2&#39;-DEOXYADENOSINE-5&#39;-MONOPHOSPHATE'>DA</scene>, <scene name='pdbligand=DC:2&#39;-DEOXYCYTIDINE-5&#39;-MONOPHOSPHATE'>DC</scene>, <scene name='pdbligand=DT:THYMIDINE-5&#39;-MONOPHOSPHATE'>DT</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY=
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|GENE= PCBP2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])
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|DOMAIN=
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{{STRUCTURE_2pqu| PDB=2pqu | SCENE= }}
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|RELATEDENTRY=[[2axy|2AXY]]
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2pqu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pqu OCA], [http://www.ebi.ac.uk/pdbsum/2pqu PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2pqu RCSB]</span>
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}}
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'''Crystal structure of KH1 domain of human PCBP2 complexed to single-stranded 12-mer telomeric dna'''
'''Crystal structure of KH1 domain of human PCBP2 complexed to single-stranded 12-mer telomeric dna'''
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[[Category: James, T L.]]
[[Category: James, T L.]]
[[Category: Lee, J.]]
[[Category: Lee, J.]]
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[[Category: dna binding protein-dna complex]]
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[[Category: Dna binding protein-dna complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 13:38:52 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 04:39:31 2008''
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Revision as of 10:38, 4 May 2008

Image:2pqu.gif

Template:STRUCTURE 2pqu

Crystal structure of KH1 domain of human PCBP2 complexed to single-stranded 12-mer telomeric dna


Overview

Poly(C)-binding proteins (PCBPs) are KH (hnRNP K homology) domain-containing proteins that recognize poly(C) DNA and RNA sequences in mammalian cells. Binding poly(C) sequences via the KH domains is critical for PCBP functions. To reveal the mechanisms of KH domain-D/RNA recognition and its functional importance, we have determined the crystal structures of PCBP2 KH1 domain in complex with a 12-nucleotide DNA corresponding to two repeats of the human C-rich strand telomeric DNA and its RNA equivalent. The crystal structures reveal molecular details for not only KH1-DNA/RNA interaction but also protein-protein interaction between two KH1 domains. NMR studies on a protein construct containing two KH domains (KH1 + KH2) of PCBP2 indicate that KH1 interacts with KH2 in a way similar to the KH1-KH1 interaction. The crystal structures and NMR data suggest possible ways by which binding certain nucleic acid targets containing tandem poly(C) motifs may induce structural rearrangement of the KH domains in PCBPs; such structural rearrangement may be crucial for some PCBP functions.

About this Structure

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

Reference

X-ray crystallographic and NMR studies of protein-protein and protein-nucleic acid interactions involving the KH domains from human poly(C)-binding protein-2., Du Z, Lee JK, Fenn S, Tjhen R, Stroud RM, James TL, RNA. 2007 Jul;13(7):1043-51. Epub 2007 May 25. PMID:17526645 Page seeded by OCA on Sun May 4 13:38:52 2008

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