3kus

From Proteopedia

(Difference between revisions)

Revision as of 07:09, 2 January 2019

Crystal structure of the MLLE domain of poly(A)-binding protein in complex with the binding region of Paip2

Structural highlights

3kus is a 4 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	3kur, 3kut
Gene:	PABPC1, PAB1, PABP1, PABPC2 (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PABP1_HUMAN] Binds the poly(A) tail of mRNA. May be involved in cytoplasmic regulatory processes of mRNA metabolism such as pre-mRNA splicing. Its function in translational initiation regulation can either be enhanced by PAIP1 or repressed by PAIP2. Can probably bind to cytoplasmic RNA sequences other than poly(A) in vivo. Involved in translationally coupled mRNA turnover. Implicated with other RNA-binding proteins in the cytoplasmic deadenylation/translational and decay interplay of the FOS mRNA mediated by the major coding-region determinant of instability (mCRD) domain. Involved in regulation of nonsense-mediated decay (NMD) of mRNAs containing premature stop codons; for the recognition of premature termination codons (PTC) and initiation of NMD a competitive interaction between UPF1 and PABPC1 with the ribosome-bound release factors is proposed.^[1] ^[2]

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

MLLE (previously known as PABC) is a peptide-binding domain that is found in poly(A)-binding protein (PABP) and EDD (E3 isolated by differential display), a HECT E3 ubiquitin ligase also known as HYD (hyperplastic discs tumor suppressor) or UBR5. The MLLE domain from PABP recruits various regulatory proteins and translation factors to poly(A) mRNAs through binding of a conserved 12 amino acid peptide motif called PAM2 (for PABP-interacting motif 2). Here, we determined crystal structures of the MLLE domain from PABP alone and in complex with PAM2 peptides from PABP-interacting protein 2. The structures provide a detailed view of hydrophobic determinants of the MLLE binding coded by PAM2 positions 3, 5, 7, 10, and 12 and reveal novel intermolecular polar contacts. In particular, the side chain of the invariant MLLE residue K580 forms hydrogen bonds with the backbone of PAM2 residues 5 and 7. The structures also show that peptide residues outside of the conserved PAM2 motif contribute to binding. Altogether, the structures provide a significant advance in understanding the molecular basis for the binding of PABP by PAM2-containing proteins involved in translational control, mRNA deadenylation, and other cellular processes.

Molecular determinants of PAM2 recognition by the MLLE domain of poly(A)-binding protein.,Kozlov G, Menade M, Rosenauer A, Nguyen L, Gehring K J Mol Biol. 2010 Mar 26;397(2):397-407. Epub 2010 Jan 22. PMID:20096703^[3]

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

References

↑ Grosset C, Chen CY, Xu N, Sonenberg N, Jacquemin-Sablon H, Shyu AB. A mechanism for translationally coupled mRNA turnover: interaction between the poly(A) tail and a c-fos RNA coding determinant via a protein complex. Cell. 2000 Sep 29;103(1):29-40. PMID:11051545
↑ Singh G, Rebbapragada I, Lykke-Andersen J. A competition between stimulators and antagonists of Upf complex recruitment governs human nonsense-mediated mRNA decay. PLoS Biol. 2008 Apr 29;6(4):e111. doi: 10.1371/journal.pbio.0060111. PMID:18447585 doi:10.1371/journal.pbio.0060111
↑ Kozlov G, Menade M, Rosenauer A, Nguyen L, Gehring K. Molecular determinants of PAM2 recognition by the MLLE domain of poly(A)-binding protein. J Mol Biol. 2010 Mar 26;397(2):397-407. Epub 2010 Jan 22. PMID:20096703 doi:10.1016/j.jmb.2010.01.032

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3kus"

@@ Line 1: / Line 1: @@
 ==Crystal structure of the MLLE domain of poly(A)-binding protein in complex with the binding region of Paip2==
 <StructureSection load='3kus' size='340' side='right' caption='[[3kus]], [[Resolution|resolution]] 1.40&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3kur|3kur]], [[3kut|3kut]]</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 HUMAN])</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=3kus FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kus OCA], [http://pdbe.org/3kus PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3kus RCSB], [http://www.ebi.ac.uk/pdbsum/3kus PDBsum]</span></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=3kus FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kus OCA], [http://pdbe.org/3kus PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3kus RCSB], [http://www.ebi.ac.uk/pdbsum/3kus PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3kus ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 14: / Line 15: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ku/3kus_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ku/3kus_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

3kus

From Proteopedia

Revision as of 07:09, 2 January 2019

Crystal structure of the MLLE domain of poly(A)-binding protein in complex with the binding region of Paip2

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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