3jr3: Difference between revisions
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==Sir2 bound to acetylated peptide== | ==Sir2 bound to acetylated peptide== | ||
<StructureSection load='3jr3' size='340' side='right' caption='[[3jr3]], [[Resolution|resolution]] 1.50Å' scene=''> | <StructureSection load='3jr3' size='340' side='right'caption='[[3jr3]], [[Resolution|resolution]] 1.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3jr3]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3jr3]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_43589 Atcc 43589]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JR3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3JR3 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | ||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ALY:N(6)-ACETYLLYSINE'>ALY</scene></td></tr> | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ALY:N(6)-ACETYLLYSINE'>ALY</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">npdA, TM_0490 ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">npdA, TM_0490 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2336 ATCC 43589])</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3jr3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jr3 OCA], [https://pdbe.org/3jr3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3jr3 RCSB], [https://www.ebi.ac.uk/pdbsum/3jr3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3jr3 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/NPD_THEMA NPD_THEMA]] NAD-dependent protein deacetylase which modulates the activities of several enzymes which are inactive in their acetylated form. Has also depropionylation activity in vitro. Also able to ADP-ribosylate peptide substrates with Arg or Lys in the +2 position. The role of this function in vivo is not clear.<ref>PMID:17684016</ref> <ref>PMID:16905097</ref> <ref>PMID:19801667</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Atcc 43589]] | [[Category: Atcc 43589]] | ||
[[Category: Large Structures]] | |||
[[Category: Hawse, W F]] | [[Category: Hawse, W F]] | ||
[[Category: Wolberger, C]] | [[Category: Wolberger, C]] | ||
Revision as of 15:16, 13 October 2021
Sir2 bound to acetylated peptideSir2 bound to acetylated peptide
Structural highlights
Function[NPD_THEMA] NAD-dependent protein deacetylase which modulates the activities of several enzymes which are inactive in their acetylated form. Has also depropionylation activity in vitro. Also able to ADP-ribosylate peptide substrates with Arg or Lys in the +2 position. The role of this function in vivo is not clear.[1] [2] [3] 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 PubMedSirtuins comprise a family of enzymes found in all organisms, where they play a role in diverse processes including transcriptional silencing, aging, regulation of transcription, and metabolism. The predominant reaction catalyzed by these enzymes is NAD(+)-dependent lysine deacetylation, although some sirtuins exhibit a weaker ADP-ribosyltransferase activity. Although the Sir2 deacetylation mechanism is well established, much less is known about the Sir2 ADP-ribosylation reaction. We have studied the ADP-ribosylation activity of a bacterial sirtuin, Sir2Tm, and show that acetylated peptides containing arginine or lysine 2 residues C-terminal to the acetyl lysine, the +2 position, are preferentially ADP-ribosylated at the +2 residue. A structure of Sir2Tm bound to the acetylated +2 arginine peptide shows how this arginine could enter the active site and react with a deacetylation reaction intermediate to yield an ADP-ribosylated peptide. The new biochemical and structural studies presented here provide mechanistic insights into the Sir2 ADP-ribosylation reaction and will aid in identifying substrates of this reaction. Structure-based mechanism of ADP-ribosylation by sirtuins.,Hawse WF, Wolberger C J Biol Chem. 2009 Nov 27;284(48):33654-61. Epub 2009 Sep 30. PMID:19801667[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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