4npn

From Proteopedia

(Difference between revisions)

Revision as of 07:29, 5 August 2016

Crystal structure of human tetra-SUMO-2

Structural highlights

4npn is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	4bkg, 1wm2, 1wm3, 2rpq
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[SUMO2_HUMAN] Ubiquitin-like protein that can be covalently attached to proteins as a monomer or as a lysine-linked polymer. Covalent attachment via an isopeptide bond to its substrates requires prior activation by the E1 complex SAE1-SAE2 and linkage to the E2 enzyme UBE2I, and can be promoted by an E3 ligase such as PIAS1-4, RANBP2 or CBX4. This post-translational modification on lysine residues of proteins plays a crucial role in a number of cellular processes such as nuclear transport, DNA replication and repair, mitosis and signal transduction. Polymeric SUMO2 chains are also susceptible to polyubiquitination which functions as a signal for proteasomal degradation of modified proteins.^[1] ^[2] ^[3]

Publication Abstract from PubMed

The E3 ubiquitin ligase RNF4 (RING finger protein 4) contains four tandem SIM [SUMO (small ubiquitin-like modifier)-interaction motif] repeats for selective interaction with poly-SUMO-modified proteins, which it targets for degradation. We employed a multi-faceted approach to characterize the structure of the RNF4-SIMs domain and the tetra-SUMO2 chain to elucidate the interaction between them. In solution, the SIM domain was intrinsically disordered and the linkers of the tetra-SUMO2 were highly flexible. Individual SIMs of the RNF4-SIMs domains bind to SUMO2 in the groove between the beta2-strand and the alpha1-helix parallel to the beta2-strand. SIM2 and SIM3 bound to SUMO with a high affinity and together constituted the recognition module necessary for SUMO binding. SIM4 alone bound to SUMO with low affinity; however, its contribution to tetra-SUMO2 binding avidity is comparable with that of SIM3 when in the RNF4-SIMs domain. The SAXS data of the tetra-SUMO2-RNF4-SIMs domain complex indicate that it exists as an ordered structure. The HADDOCK model showed that the tandem RNF4-SIMs domain bound antiparallel to the tetra-SUMO2 chain orientation and wrapped around the SUMO protamers in a superhelical turn without imposing steric hindrance on either molecule.

Structural analysis of poly-SUMO chain recognition by the RNF4-SIMs domain.,Kung CC, Naik MT, Wang SH, Shih HM, Chang CC, Lin LY, Chen CL, Ma C, Chang CF, Huang TH Biochem J. 2014 Aug 15;462(1):53-65. doi: 10.1042/BJ20140521. PMID:24844634^[4]

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

References

↑ Kamitani T, Kito K, Nguyen HP, Fukuda-Kamitani T, Yeh ET. Characterization of a second member of the sentrin family of ubiquitin-like proteins. J Biol Chem. 1998 May 1;273(18):11349-53. PMID:9556629
↑ Meulmeester E, Kunze M, Hsiao HH, Urlaub H, Melchior F. Mechanism and consequences for paralog-specific sumoylation of ubiquitin-specific protease 25. Mol Cell. 2008 Jun 6;30(5):610-9. doi: 10.1016/j.molcel.2008.03.021. PMID:18538659 doi:10.1016/j.molcel.2008.03.021
↑ Tatham MH, Geoffroy MC, Shen L, Plechanovova A, Hattersley N, Jaffray EG, Palvimo JJ, Hay RT. RNF4 is a poly-SUMO-specific E3 ubiquitin ligase required for arsenic-induced PML degradation. Nat Cell Biol. 2008 May;10(5):538-46. doi: 10.1038/ncb1716. Epub 2008 Apr 13. PMID:18408734 doi:10.1038/ncb1716
↑ Kung CC, Naik MT, Wang SH, Shih HM, Chang CC, Lin LY, Chen CL, Ma C, Chang CF, Huang TH. Structural analysis of poly-SUMO chain recognition by the RNF4-SIMs domain. Biochem J. 2014 Aug 15;462(1):53-65. doi: 10.1042/BJ20140521. PMID:24844634 doi:http://dx.doi.org/10.1042/BJ20140521

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4npn"

@@ Line 1: / Line 1: @@
 ==Crystal structure of human tetra-SUMO-2==
 <StructureSection load='4npn' size='340' side='right' caption='[[4npn]], [[Resolution|resolution]] 1.63&Aring;' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[4npn]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4NPN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4NPN FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4bkg|4bkg]], [[1wm2|1wm2]], [[1wm3|1wm3]], [[2rpq|2rpq]]</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=4npn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4npn OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4npn RCSB], [http://www.ebi.ac.uk/pdbsum/4npn 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=4npn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4npn OCA], [http://pdbe.org/4npn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4npn RCSB], [http://www.ebi.ac.uk/pdbsum/4npn PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4npn ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 16: / Line 17: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4npn" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[SUMO|SUMO]]
 == References ==
 <references/>

4npn

From Proteopedia

Revision as of 07:29, 5 August 2016

Crystal structure of human tetra-SUMO-2

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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