4dpz: Difference between revisions

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==Crystal structure of human HRASLS2==
==Crystal structure of human HRASLS2==
<StructureSection load='4dpz' size='340' side='right' caption='[[4dpz]], [[Resolution|resolution]] 1.25&Aring;' scene=''>
<StructureSection load='4dpz' size='340' side='right'caption='[[4dpz]], [[Resolution|resolution]] 1.25&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4dpz]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DPZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4DPZ FirstGlance]. <br>
<table><tr><td colspan='2'>[[4dpz]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4DPZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4DPZ FirstGlance]. <br>
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CSX:S-OXY+CYSTEINE'>CSX</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.25&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4dot|4dot]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CSX:S-OXY+CYSTEINE'>CSX</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HRASLS2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=4dpz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4dpz OCA], [https://pdbe.org/4dpz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4dpz RCSB], [https://www.ebi.ac.uk/pdbsum/4dpz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4dpz ProSAT]</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=4dpz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4dpz OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4dpz RCSB], [http://www.ebi.ac.uk/pdbsum/4dpz PDBsum]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/PLAT2_HUMAN PLAT2_HUMAN] Exhibits both phospholipase A1/2 and acyltransferase activities (PubMed:19615464, PubMed:22825852, PubMed:22605381, PubMed:26503625). Shows phospholipase A1 (PLA1) and A2 (PLA2) activity, catalyzing the calcium-independent release of fatty acids from the sn-1 or sn-2 position of glycerophospholipids (PubMed:19615464, PubMed:22825852, PubMed:22605381). For most substrates, PLA1 activity is much higher than PLA2 activity (PubMed:19615464). Shows O-acyltransferase activity, catalyzing the transfer of a fatty acyl group from glycerophospholipid to the hydroxyl group of lysophospholipid (PubMed:19615464). Shows N-acyltransferase activity, catalyzing the calcium-independent transfer of a fatty acyl group at the sn-1 position of phosphatidylcholine (PC) and other glycerophospholipids to the primary amine of phosphatidylethanolamine (PE), forming N-acylphosphatidylethanolamine (NAPE), which serves as precursor for N-acylethanolamines (NAEs) (PubMed:19615464, PubMed:22825852, PubMed:22605381). Catalyzes N-acylation of PE using both sn-1 and sn-2 palmitoyl groups of PC as acyl donor (PubMed:22605381). Exhibits high phospholipase A1/2 activity and low N-acyltransferase activity (PubMed:22825852).<ref>PMID:19615464</ref> <ref>PMID:22605381</ref> <ref>PMID:22825852</ref> <ref>PMID:26503625</ref>  
Lecithin:retinol acyltransferase-like proteins, also referred to as HRAS-like tumor suppressors, comprise a vertebrate subfamily of papain-like or NlpC/P60 thiol proteases that function as phospholipid-metabolizing enzymes. HRAS-like tumor suppressor 3, a representative member of this group, plays a key role in regulating triglyceride accumulation and energy expenditure in adipocytes and therefore constitutes a novel pharmacological target for treatment of metabolic disorders causing obesity. Here, we delineate a catalytic mechanism common to lecithin:retinol acyltransferase-like proteins and provide evidence for their alternative robust lipid-dependent acyltransferase enzymatic activity. We also determined high resolution crystal structures of HRAS-like tumor suppressor 2 and 3 to gain insight into their active site architecture. Based on this structural analysis, two conformational states of the catalytic Cys-113 were identified that differ in reactivity and thus could define the catalytic properties of these two proteins. Finally, these structures provide a model for the topology of these enzymes and allow identification of the protein-lipid bilayer interface. This study contributes to the enzymatic and structural understanding of HRAS-like tumor suppressor enzymes.
 
Structural Basis for the Acyltransferase Activity of Lecithin:Retinol Acyltransferase-like Proteins.,Golczak M, Kiser PD, Sears AE, Lodowski DT, Blaner WS, Palczewski K J Biol Chem. 2012 Jul 6;287(28):23790-807. Epub 2012 May 17. PMID:22605381<ref>PMID:22605381</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Golczak, M]]
[[Category: Large Structures]]
[[Category: Kiser, P D]]
[[Category: Golczak M]]
[[Category: Lodowski, D T]]
[[Category: Kiser PD]]
[[Category: Palczewski, K]]
[[Category: Lodowski DT]]
[[Category: Sears, A E]]
[[Category: Palczewski K]]
[[Category: Alpha/beta fold]]
[[Category: Sears AE]]
[[Category: Enzyme phospholipid acyltransferase]]
[[Category: Hydrolase]]
[[Category: Transferase]]

Latest revision as of 14:42, 14 March 2024

Crystal structure of human HRASLS2

4dpz, resolution 1.25Å

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