View source for 7oxy


==Crystal structure of depupylase Dop in complex with Pup and AMP-PCP==
<StructureSection load='7oxy' size='340' side='right'caption='[[7oxy]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7oxy]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Acidothermus_cellulolyticus Acidothermus cellulolyticus] and [https://en.wikipedia.org/wiki/Acidothermus_cellulolyticus_11B Acidothermus cellulolyticus 11B]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7OXY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7OXY FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.65&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACP:PHOSPHOMETHYLPHOSPHONIC+ACID+ADENYLATE+ESTER'>ACP</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=PGE:TRIETHYLENE+GLYCOL'>PGE</scene></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=7oxy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7oxy OCA], [https://pdbe.org/7oxy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7oxy RCSB], [https://www.ebi.ac.uk/pdbsum/7oxy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7oxy ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DOP_ACIC1 DOP_ACIC1] Displays depupylase (DPUP) activity, removing conjugated Pup from target proteins; is thus involved in the recycling of Pup and may function similarly to deubiquitinases (DUBs) in eukaryotes to prevent or promote proteasomal degradation of certain proteins. Is also able to catalyze the deamidation of the C-terminal glutamine to glutamate in a variant of the prokaryotic ubiquitin-like protein Pup; however, since Pup from A.cellulolyticus possesses a C-terminal glutamate, this deamidase activity may be of no significance in vivo.<ref>PMID:22910360</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Pupylation is the post-translational modification of lysine side chains with prokaryotic ubiquitin-like protein (Pup) that targets proteins for proteasomal degradation in mycobacteria and other members of Actinobacteria. Pup ligase PafA and depupylase Dop are the two enzymes acting in this pathway. Although they share close structural and sequence homology indicative of a common evolutionary origin, they catalyze opposing reactions. Here, we report a series of high-resolution crystal structures of Dop in different functional states along the reaction pathway, including Pup-bound states in distinct conformations. In combination with biochemical analysis, the structures explain the role of the C-terminal residue of Pup in ATP hydrolysis, the process that generates the catalytic phosphate in the active site, and suggest a role for the Dop-loop as an allosteric sensor for Pup-binding and ATP cleavage.

Structures of prokaryotic ubiquitin-like protein Pup in complex with depupylase Dop reveal the mechanism of catalytic phosphate formation.,Cui H, Muller AU, Leibundgut M, Tian J, Ban N, Weber-Ban E Nat Commun. 2021 Nov 17;12(1):6635. doi: 10.1038/s41467-021-26848-x. PMID:34789727<ref>PMID:34789727</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7oxy" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Acidothermus cellulolyticus]]
[[Category: Acidothermus cellulolyticus 11B]]
[[Category: Large Structures]]
[[Category: Cui H]]