View source for 2l83


==A protein from Haloferax volcanii==
<StructureSection load='2l83' size='340' side='right'caption='[[2l83]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2l83]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Haloferax_volcanii_DS2 Haloferax volcanii DS2]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2L83 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2L83 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2l83 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2l83 OCA], [https://pdbe.org/2l83 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2l83 RCSB], [https://www.ebi.ac.uk/pdbsum/2l83 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2l83 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SAMP1_HALVD SAMP1_HALVD] Protein modifier that is likely covalently attached to lysine residues of substrate proteins. The tagging system is termed SAMPylation. It is not known whether it is implicated in the targeting of proteins to the proteasome for degradation.
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== Publication Abstract from PubMed ==
Eukaryotic ubiquitin and ubiquitin-like systems play crucial roles in various cellular biological processes. In this work, we determined the solution structure of SAMP1 from Haloferax volcanii by NMR spectroscopy. Under low ionic conditions, SAMP1 presented two distinct conformations, one folded beta-grasp and the other disordered. Interestingly, SAMP1 underwent a conformational conversion from disorder to order with ion concentration increasing, indicating that the ordered conformation is the functional form of SAMP1 under the physiological condition of H. volcanii. Furthermore, SAMP1 could interact with proteasome-activating nucleotidase B, supposing a potential role of SAMP1 in the protein degradation pathway mediated by proteasome.

Ionic strength-dependent conformations of a ubiquitin-like small archaeal modifier protein (SAMP1) from Haloferax volcanii.,Ye K, Liao S, Zhang W, Fan K, Zhang X, Zhang J, Xu C, Tu X Protein Sci. 2013 Sep;22(9):1174-82. doi: 10.1002/pro.2302. Epub 2013 Jul 22. PMID:23818097<ref>PMID:23818097</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2l83" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Haloferax volcanii DS2]]
[[Category: Large Structures]]
[[Category: Fan K]]
[[Category: Liao S]]
[[Category: Tu X]]
[[Category: Zhang W]]