1thg: Difference between revisions
No edit summary |
No edit summary |
||
| Line 3: | Line 3: | ||
<StructureSection load='1thg' size='340' side='right'caption='[[1thg]], [[Resolution|resolution]] 1.80Å' scene=''> | <StructureSection load='1thg' size='340' side='right'caption='[[1thg]], [[Resolution|resolution]] 1.80Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1thg]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1thg]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_22600_[[endomyces_geotrichum]] Atcc 22600 [[endomyces geotrichum]]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1THG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1THG FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene></td></tr> | ||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr> | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LIP2 ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LIP2 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1173061 ATCC 22600 [[Endomyces geotrichum]]])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Triacylglycerol_lipase Triacylglycerol lipase], with EC number [https://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'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1thg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1thg OCA], [https://pdbe.org/1thg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1thg RCSB], [https://www.ebi.ac.uk/pdbsum/1thg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1thg ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/LIP2_GEOCN LIP2_GEOCN]] Hydrolyzes all ester bonds in triglyceride and displays a high affinity for triolein. For unsaturated substrates having long fatty acyl chains (C18:2 cis-9, cis-12 and C18:3 cis-9, cis-12, cis-15) GCL I shows higher specific activity than GCL II, whereas GCL II shows higher specific activity against saturated substrates having short fatty acid chains (C8, C10, C12 and C14). | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Revision as of 12:27, 29 September 2021
1.8 ANGSTROMS REFINED STRUCTURE OF THE LIPASE FROM GEOTRICHUM CANDIDUM1.8 ANGSTROMS REFINED STRUCTURE OF THE LIPASE FROM GEOTRICHUM CANDIDUM
Structural highlights
Function[LIP2_GEOCN] Hydrolyzes all ester bonds in triglyceride and displays a high affinity for triolein. For unsaturated substrates having long fatty acyl chains (C18:2 cis-9, cis-12 and C18:3 cis-9, cis-12, cis-15) GCL I shows higher specific activity than GCL II, whereas GCL II shows higher specific activity against saturated substrates having short fatty acid chains (C8, C10, C12 and C14). 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 PubMedA lipase from the fungus Geotrichum candidum is one of only three interfacially activated lipases whose structures have been reported to date. We have previously reported the partially refined 2.2 A structure of this enzyme. We have subsequently extended the resolution and here report the fully refined 1.8 A structure of this lipase. The structure observed in the crystal is apparently not the lipolytic conformation, as the active site is not accessible from the surface of the molecule. A single large cavity is found in the interior of the molecule and extends from the catalytic Ser to two surface helices, suggesting that this face may be the region that interacts with the lipid interface. The mobility of local segments on this face is indicated by temperature factors larger than elsewhere in the molecule and by the observation of several residues whose side-chains are discretely disordered. These observations strongly suggest that this portion of the molecule is involved in interfacial and substrate binding, but the exact nature of the conformational changes induced by binding to the lipid interface can not be determined. 1.8 A refined structure of the lipase from Geotrichum candidum.,Schrag JD, Cygler M J Mol Biol. 1993 Mar 20;230(2):575-91. PMID:8464065[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
|
| ||||||||||||||||||||||