1m8s: Difference between revisions
No edit summary |
No edit summary |
||
| Line 3: | Line 3: | ||
<StructureSection load='1m8s' size='340' side='right'caption='[[1m8s]], [[Resolution|resolution]] 1.90Å' scene=''> | <StructureSection load='1m8s' size='340' side='right'caption='[[1m8s]], [[Resolution|resolution]] 1.90Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1m8s]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1m8s]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Gloydius_halys Gloydius halys]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M8S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1M8S FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BU1:1,4-BUTANEDIOL'>BU1</scene>, <scene name='pdbligand=CD:CADMIUM+ION'>CD</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BU1:1,4-BUTANEDIOL'>BU1</scene>, <scene name='pdbligand=CD:CADMIUM+ION'>CD</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1psj|1psj]], [[1bk9|1bk9]], [[1m8r|1m8r]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1psj|1psj]], [[1bk9|1bk9]], [[1m8r|1m8r]]</div></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/Phospholipase_A(2) Phospholipase A(2)], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.4 3.1.1.4] </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=1m8s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m8s OCA], [https://pdbe.org/1m8s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1m8s RCSB], [https://www.ebi.ac.uk/pdbsum/1m8s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1m8s ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/PA2A_GLOHA PA2A_GLOHA]] Snake venom phospholipase A2 (PLA2) that acts in vivo as an anti-thrombotic agent. Inhibits platelet aggregation induced by ADP, arachidonic acid, and thrombin. PLA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides.<ref>PMID:18456297</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
| Line 32: | Line 32: | ||
==See Also== | ==See Also== | ||
*[[Phospholipase A2|Phospholipase A2]] | *[[Phospholipase A2 3D structures|Phospholipase A2 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 09:54, 18 August 2021
Crystal Structures of Cadmium-binding Acidic Phospholipase A2 from the Venom of Agkistrodon halys pallas at 1.9 Resolution (crystal grown at pH 5.9)Crystal Structures of Cadmium-binding Acidic Phospholipase A2 from the Venom of Agkistrodon halys pallas at 1.9 Resolution (crystal grown at pH 5.9)
Structural highlights
Function[PA2A_GLOHA] Snake venom phospholipase A2 (PLA2) that acts in vivo as an anti-thrombotic agent. Inhibits platelet aggregation induced by ADP, arachidonic acid, and thrombin. PLA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides.[1] 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 PubMedPhospholipase A(2) coordinates Ca(2+) ion through three carbonyl oxygen atoms of residues 28, 30, and 32, two carboxyl oxygen atoms of residue Asp49, and two (or one) water molecules, forming seven (or six) coordinate geometry of Ca(2+) ligands. Two crystal structures of cadmium-binding acidic phospholipase A(2) from the venom of Agkistrodon halys Pallas (i.e., Agkistrodon blomhoffii brevicaudus) at different pH values (5.9 and 7.4) were determined to 1.9A resolution by the isomorphous difference Fourier method. The well-refined structures revealed that a Cd(2+) ion occupied the position expected for a Ca(2+) ion, and that the substitution of Cd(2+) for Ca(2+) resulted in detectable changes in the metal-binding region: one of the carboxyl oxygen atoms from residue Asp49 was farther from the metal ion while the other one was closer and there were no water molecules coordinating to the metal ion. Thus the Cd(2+)-binding region appears to have four coordinating oxygen ligands. The cadmium binding to the enzyme induced no other significant conformational change in the enzyme molecule elsewhere. The mechanism for divalent cadmium cation to support substrate binding but not catalysis is discussed. Structures of cadmium-binding acidic phospholipase A2 from the venom of Agkistrodon halys Pallas at 1.9A resolution.,Xu S, Gu L, Jiang T, Zhou Y, Lin Z Biochem Biophys Res Commun. 2003 Jan 10;300(2):271-7. PMID:12504079[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
|
| ||||||||||||||||||||