4f25: Difference between revisions
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[[ | ==Crystal structure of the second RRM domain of human PABPC1 at pH 6.0== | ||
<StructureSection load='4f25' size='340' side='right' caption='[[4f25]], [[Resolution|resolution]] 1.90Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4f25]] is a 1 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=4F25 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4F25 FirstGlance]. <br> | |||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4f26|4f26]]</td></tr> | |||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PABPC1, PAB1, PABP1, PABPC2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4f25 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f25 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4f25 RCSB], [http://www.ebi.ac.uk/pdbsum/4f25 PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Many RNA-binding proteins contain multiple single-strand nucleic acid-binding domains and assemble into large multiprotein messenger ribonucleic acid protein (mRNP) complexes. The mechanisms underlying the self-assembly of these complexes are largely unknown. In eukaryotes, the association of the translation factors polyadenylate-binding protein-1 (PABP) and eIF4G is essential for high-level expression of polyadenylated mRNAs. Here, we report the crystal structure of the ternary complex poly(A)(11).PABP(1-190).eIF4G(178-203) at 2.0 A resolution. Our NMR and crystallographic data show that eIF4G interacts with the RRM2 domain of PABP. Analysis of the interaction by small-angle X-ray scattering, isothermal titration calorimetry, and electromobility shift assays reveals that this interaction is allosterically regulated by poly(A) binding to PABP. Furthermore, we have confirmed the importance of poly(A) for the endogenous PABP and eIF4G interaction in immunoprecipitation experiments using HeLa cell extracts. Our findings reveal interdomain allostery as a mechanism for cooperative assembly of RNP complexes. | |||
Interdomain Allostery Promotes Assembly of the Poly(A) mRNA Complex with PABP and eIF4G.,Safaee N, Kozlov G, Noronha AM, Xie J, Wilds CJ, Gehring K Mol Cell. 2012 Nov 9;48(3):375-86. doi: 10.1016/j.molcel.2012.09.001. Epub 2012, Oct 4. PMID:23041282<ref>PMID:23041282</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
== | __TOC__ | ||
</StructureSection> | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Gehring, K | [[Category: Gehring, K]] | ||
[[Category: Kozlov, G | [[Category: Kozlov, G]] | ||
[[Category: Safaee, N | [[Category: Safaee, N]] | ||
[[Category: Eif4g-binding]] | [[Category: Eif4g-binding]] | ||
[[Category: Rna-binding]] | [[Category: Rna-binding]] | ||
Revision as of 20:34, 9 December 2014
Crystal structure of the second RRM domain of human PABPC1 at pH 6.0Crystal structure of the second RRM domain of human PABPC1 at pH 6.0
Structural highlights
Publication Abstract from PubMedMany RNA-binding proteins contain multiple single-strand nucleic acid-binding domains and assemble into large multiprotein messenger ribonucleic acid protein (mRNP) complexes. The mechanisms underlying the self-assembly of these complexes are largely unknown. In eukaryotes, the association of the translation factors polyadenylate-binding protein-1 (PABP) and eIF4G is essential for high-level expression of polyadenylated mRNAs. Here, we report the crystal structure of the ternary complex poly(A)(11).PABP(1-190).eIF4G(178-203) at 2.0 A resolution. Our NMR and crystallographic data show that eIF4G interacts with the RRM2 domain of PABP. Analysis of the interaction by small-angle X-ray scattering, isothermal titration calorimetry, and electromobility shift assays reveals that this interaction is allosterically regulated by poly(A) binding to PABP. Furthermore, we have confirmed the importance of poly(A) for the endogenous PABP and eIF4G interaction in immunoprecipitation experiments using HeLa cell extracts. Our findings reveal interdomain allostery as a mechanism for cooperative assembly of RNP complexes. Interdomain Allostery Promotes Assembly of the Poly(A) mRNA Complex with PABP and eIF4G.,Safaee N, Kozlov G, Noronha AM, Xie J, Wilds CJ, Gehring K Mol Cell. 2012 Nov 9;48(3):375-86. doi: 10.1016/j.molcel.2012.09.001. Epub 2012, Oct 4. PMID:23041282[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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