1kvx: Difference between revisions

From Proteopedia
Jump to navigationJump to search
← Older edit
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,330,058 edits
No edit summary
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,330,058 edits
No edit summary
 
(17 intermediate revisions by the same user not shown)
Line 1: Line 1:
[[Image:1kvx.gif|left|200px]]


{{Structure
==CARBOXYLIC ESTER HYDROLASE, SINGLE MUTANT D99A OF BOVINE PANCREATIC PLA2, 1.9 A ORTHORHOMBIC FORM==
|PDB= 1kvx |SIZE=350|CAPTION= <scene name='initialview01'>1kvx</scene>, resolution 1.9&Aring;
<StructureSection load='1kvx' size='340' side='right'caption='[[1kvx]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene>
<table><tr><td colspan='2'>[[1kvx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KVX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KVX FirstGlance]. <br>
|ACTIVITY= [http://en.wikipedia.org/wiki/Phospholipase_A(2) Phospholipase A(2)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.1.4 3.1.1.4]  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
|GENE= MATURE PLA2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9913 Bos taurus])
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></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=1kvx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kvx OCA], [https://pdbe.org/1kvx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kvx RCSB], [https://www.ebi.ac.uk/pdbsum/1kvx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kvx ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PA21B_BOVIN PA21B_BOVIN] PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kv/1kvx_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </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/main_output.php?pdb_ID=1kvx ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Crystal structures of the active-site mutants D99A and H48Q and the calcium-loop mutant D49E of bovine phospholipase A2 have been determined at around 1.9 A resolution. The D99A mutant is isomorphous to the orthorhombic recombinant enzyme, space group P212121. The H48Q and the calcium-loop mutant D49E are isomorphous to the trigonal recombinant enzyme, space group P3121. The two active-site mutants show no major structural perturbations. The structural water is absent in D99A and, therefore, the hydrogen-bonding scheme is changed. In H48Q, the catalytic water is present and hydrogen bonded to Gln48 N, but the second water found in native His48 is absent. In the calcium-loop mutant D49E, the two water molecules forming the pentagonal bipyramid around calcium are absent and only one O atom of the Glu49 carboxylate group is coordinated to calcium, resulting in only four ligands.


'''CARBOXYLIC ESTER HYDROLASE, SINGLE MUTANT D99A OF BOVINE PANCREATIC PLA2, 1.9 A ORTHORHOMBIC FORM'''
Structures of the catalytic site mutants D99A and H48Q and the calcium-loop mutant D49E of phospholipase A2.,Sekar K, Biswas R, Li Y, Tsai M, Sundaralingam M Acta Crystallogr D Biol Crystallogr. 1999 Feb;55(Pt 2):443-7. PMID:10089353<ref>PMID:10089353</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1kvx" style="background-color:#fffaf0;"></div>


==Overview==
==See Also==
Crystal structures of the active-site mutants D99A and H48Q and the calcium-loop mutant D49E of bovine phospholipase A2 have been determined at around 1.9 A resolution. The D99A mutant is isomorphous to the orthorhombic recombinant enzyme, space group P212121. The H48Q and the calcium-loop mutant D49E are isomorphous to the trigonal recombinant enzyme, space group P3121. The two active-site mutants show no major structural perturbations. The structural water is absent in D99A and, therefore, the hydrogen-bonding scheme is changed. In H48Q, the catalytic water is present and hydrogen bonded to Gln48 N, but the second water found in native His48 is absent. In the calcium-loop mutant D49E, the two water molecules forming the pentagonal bipyramid around calcium are absent and only one O atom of the Glu49 carboxylate group is coordinated to calcium, resulting in only four ligands.
*[[Phospholipase A2 3D structures|Phospholipase A2 3D structures]]
 
== References ==
==About this Structure==
<references/>
1KVX is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KVX OCA].
__TOC__
 
</StructureSection>
==Reference==
Structures of the catalytic site mutants D99A and H48Q and the calcium-loop mutant D49E of phospholipase A2., Sekar K, Biswas R, Li Y, Tsai M, Sundaralingam M, Acta Crystallogr D Biol Crystallogr. 1999 Feb;55(Pt 2):443-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10089353 10089353]
[[Category: Bos taurus]]
[[Category: Bos taurus]]
[[Category: Phospholipase A(2)]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Sundaralingam M]]
[[Category: Sundaralingam, M.]]
[[Category: CA]]
[[Category: carboxylic ester hydrolase]]
[[Category: enzyme]]
[[Category: hydrolase]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:22:54 2008''
Retrieved from "https://proteopedia.org/1kvx"