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| | ==Structure of human pancreatic lipase related protein 2 mutant N336Q== | | ==Structure of human pancreatic lipase related protein 2 mutant N336Q== |
| - | <StructureSection load='2pvs' size='340' side='right' caption='[[2pvs]], [[Resolution|resolution]] 3.00Å' scene=''> | + | <StructureSection load='2pvs' size='340' side='right'caption='[[2pvs]], [[Resolution|resolution]] 3.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2pvs]] is a 2 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=2PVS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2PVS FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2pvs]] is a 2 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=2PVS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PVS FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 3Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PNLIPRP2, PLRP2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Triacylglycerol_lipase Triacylglycerol lipase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.3 3.1.1.3] </span></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=2pvs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pvs OCA], [https://pdbe.org/2pvs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2pvs RCSB], [https://www.ebi.ac.uk/pdbsum/2pvs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2pvs 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=2pvs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pvs OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2pvs RCSB], [http://www.ebi.ac.uk/pdbsum/2pvs PDBsum]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/LIPR2_HUMAN LIPR2_HUMAN]] Lipase with broad substrate specificity. Can hydrolyze both phospholipids and galactolipids. Acts preferentially on monoglycerides, phospholipids and galactolipids. Contributes to milk fat hydrolysis.<ref>PMID:19824014</ref> <ref>PMID:20083229</ref> <ref>PMID:18702514</ref> | + | [https://www.uniprot.org/uniprot/LIPR2_HUMAN LIPR2_HUMAN] Lipase with broad substrate specificity. Can hydrolyze both phospholipids and galactolipids. Acts preferentially on monoglycerides, phospholipids and galactolipids. Contributes to milk fat hydrolysis.<ref>PMID:19824014</ref> <ref>PMID:20083229</ref> <ref>PMID:18702514</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| | Check<jmol> | | Check<jmol> |
| | <jmolCheckbox> | | <jmolCheckbox> |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pv/2pvs_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pv/2pvs_consurf.spt"</scriptWhenChecked> |
| - | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
| | </jmolCheckbox> | | </jmolCheckbox> |
| - | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf]. | + | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2pvs ConSurf]. |
| | <div style="clear:both"></div> | | <div style="clear:both"></div> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
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| | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| | </div> | | </div> |
| | + | <div class="pdbe-citations 2pvs" style="background-color:#fffaf0;"></div> |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Homo sapiens]] | | [[Category: Homo sapiens]] |
| - | [[Category: Triacylglycerol lipase]] | + | [[Category: Large Structures]] |
| - | [[Category: Cambillau, C]] | + | [[Category: Cambillau C]] |
| - | [[Category: Carriere, F]] | + | [[Category: Carriere F]] |
| - | [[Category: Eydoux, C]] | + | [[Category: Eydoux C]] |
| - | [[Category: Spinelli, S]] | + | [[Category: Spinelli S]] |
| - | [[Category: Galacto lipids hydrolysis]]
| + | |
| - | [[Category: Hydrolase]]
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| - | [[Category: Lipase]]
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| Structural highlights
Function
LIPR2_HUMAN Lipase with broad substrate specificity. Can hydrolyze both phospholipids and galactolipids. Acts preferentially on monoglycerides, phospholipids and galactolipids. Contributes to milk fat hydrolysis.[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 PubMed
Access to the active site of pancreatic lipase (PL) is controlled by a surface loop, the lid, which normally undergoes conformational changes only upon addition of lipids or amphiphiles. Structures of PL with their lids in the open and functional conformation have required cocrystallization with amphiphiles. Here we report two crystal structures of wild-type and unglycosylated human pancreatic lipase-related protein 2 (HPLRP2) with the lid in an open conformation in the absence of amphiphiles. These structures solved independently are strikingly similar, with some residues of the lid being poorly defined in the electron-density map. The open conformation of the lid is however different from that previously observed in classical liganded PL, suggesting different kinetic properties for HPLRP2. Here we show that the HPLRP2 is directly inhibited by E600, does not present interfacial activation, and acts preferentially on substrates forming monomers or small aggregates (micelles) dispersed in solution like monoglycerides, phospholipids and galactolipids, whereas classical PL displays reverse properties and a high specificity for unsoluble substrates like triglycerides and diglycerides forming oil-in-water interfaces. These biochemical properties imply that the lid of HPLRP2 is likely to spontaneously adopt in solution the open conformation observed in the crystal structure. This open conformation generates a large cavity capable of accommodating the digalactose polar head of galactolipids, similar to that previously observed in the active site of the guinea pig PLRP2, but absent from the classical PL. Most of the structural and kinetic properties of HPLRP2 were found to be different from those of rat PLRP2, the structure of which was previously obtained with the lid in a closed conformation. Our findings illustrate the essential role of the lid in determining the substrate specificity and the mechanism of action of lipases.
Structure of human pancreatic lipase-related protein 2 with the lid in an open conformation.,Eydoux C, Spinelli S, Davis TL, Walker JR, Seitova A, Dhe-Paganon S, De Caro A, Cambillau C, Carriere F Biochemistry. 2008 Sep 9;47(36):9553-64. Epub 2008 Aug 15. PMID:18702514[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Berton A, Sebban-Kreuzer C, Rouvellac S, Lopez C, Crenon I. Individual and combined action of pancreatic lipase and pancreatic lipase-related proteins 1 and 2 on native versus homogenized milk fat globules. Mol Nutr Food Res. 2009 Dec;53(12):1592-602. doi: 10.1002/mnfr.200800563. PMID:19824014 doi:http://dx.doi.org/10.1002/mnfr.200800563
- ↑ Amara S, Barouh N, Lecomte J, Lafont D, Robert S, Villeneuve P, De Caro A, Carriere F. Lipolysis of natural long chain and synthetic medium chain galactolipids by pancreatic lipase-related protein 2. Biochim Biophys Acta. 2010 Apr;1801(4):508-16. doi: 10.1016/j.bbalip.2010.01.003., Epub 2010 Jan 18. PMID:20083229 doi:http://dx.doi.org/10.1016/j.bbalip.2010.01.003
- ↑ Eydoux C, Spinelli S, Davis TL, Walker JR, Seitova A, Dhe-Paganon S, De Caro A, Cambillau C, Carriere F. Structure of human pancreatic lipase-related protein 2 with the lid in an open conformation. Biochemistry. 2008 Sep 9;47(36):9553-64. Epub 2008 Aug 15. PMID:18702514 doi:10.1021/bi8005576
- ↑ Eydoux C, Spinelli S, Davis TL, Walker JR, Seitova A, Dhe-Paganon S, De Caro A, Cambillau C, Carriere F. Structure of human pancreatic lipase-related protein 2 with the lid in an open conformation. Biochemistry. 2008 Sep 9;47(36):9553-64. Epub 2008 Aug 15. PMID:18702514 doi:10.1021/bi8005576
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