1xm8: Difference between revisions
No edit summary |
No edit summary |
||
| Line 3: | Line 3: | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1xm8]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XM8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1XM8 FirstGlance]. <br> | <table><tr><td colspan='2'>[[1xm8]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XM8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1XM8 FirstGlance]. <br> | ||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>< | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACY:ACETIC+ACID'>ACY</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | ||
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">At2g31350 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 Arabidopsis thaliana])</td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">At2g31350 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 Arabidopsis thaliana])</td></tr> | ||
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Hydroxyacylglutathione_hydrolase Hydroxyacylglutathione hydrolase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.2.6 3.1.2.6] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Hydroxyacylglutathione_hydrolase Hydroxyacylglutathione hydrolase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.2.6 3.1.2.6] </span></td></tr> | ||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1xm8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xm8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1xm8 RCSB], [http://www.ebi.ac.uk/pdbsum/1xm8 PDBsum], [http://www.topsan.org/Proteins/CESG/1xm8 TOPSAN]</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=1xm8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xm8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1xm8 RCSB], [http://www.ebi.ac.uk/pdbsum/1xm8 PDBsum], [http://www.topsan.org/Proteins/CESG/1xm8 TOPSAN]</span></td></tr> | ||
<table> | </table> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
| Line 35: | Line 35: | ||
[[Category: Arabidopsis thaliana]] | [[Category: Arabidopsis thaliana]] | ||
[[Category: Hydroxyacylglutathione hydrolase]] | [[Category: Hydroxyacylglutathione hydrolase]] | ||
[[Category: Allard, S T.M | [[Category: Allard, S T.M]] | ||
[[Category: Bingman, C A | [[Category: Bingman, C A]] | ||
[[Category: Bitto, E | [[Category: Bitto, E]] | ||
[[Category: | [[Category: Structural genomic]] | ||
[[Category: Phillips, G N | [[Category: Phillips, G N]] | ||
[[Category: Smith, D W | [[Category: Smith, D W]] | ||
[[Category: Wesenberg, G E | [[Category: Wesenberg, G E]] | ||
[[Category: At2g31350]] | [[Category: At2g31350]] | ||
[[Category: B-lactamase fold]] | [[Category: B-lactamase fold]] | ||
[[Category: Cesg]] | [[Category: Cesg]] | ||
[[Category: Hydrolase]] | [[Category: Hydrolase]] | ||
[[Category: Metallo-hydrolase]] | [[Category: Metallo-hydrolase]] | ||
[[Category: Mitochondrial isozyme]] | [[Category: Mitochondrial isozyme]] | ||
[[Category: Protein structure initiative | [[Category: PSI, Protein structure initiative]] | ||
[[Category: Thioester hydrolase]] | [[Category: Thioester hydrolase]] | ||
[[Category: Zinc/iron binuclear center]] | [[Category: Zinc/iron binuclear center]] | ||
Revision as of 15:21, 6 January 2015
X-RAY STRUCTURE OF GLYOXALASE II FROM ARABIDOPSIS THALIANA GENE AT2G31350X-RAY STRUCTURE OF GLYOXALASE II FROM ARABIDOPSIS THALIANA GENE AT2G31350
Structural highlights
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 PubMedGlyoxalase 2 is a beta-lactamase fold-containing enzyme that appears to be involved with cellular chemical detoxification. Although the cytoplasmic isozyme has been characterized from several organisms, essentially nothing is known about the mitochondrial proteins. As a first step in understanding the structure and function of mitochondrial glyoxalase 2 enzymes, a mitochondrial isozyme (GLX2-5) from Arabidopsis thaliana was cloned, overexpressed, purified, and characterized using metal analyses, EPR and (1)H NMR spectroscopies, and x-ray crystallography. The recombinant enzyme was shown to bind 1.04 +/- 0.15 eq of iron and 1.31 +/- 0.05 eq of Zn(II) and to exhibit k(cat) and K(m) values of 129 +/- 10 s(-1) and 391 +/- 48 microm, respectively, when using S-d-lactoylglutathione as the substrate. EPR spectra revealed that recombinant GLX2-5 contains multiple metal centers, including a predominant Fe(III)Z-n(II) center and an anti-ferromagnetically coupled Fe(III)Fe(II) center. Unlike cytosolic glyoxalase 2 from A. thaliana, GLX2-5 does not appear to specifically bind manganese. (1)H NMR spectra revealed the presence of at least eight paramagnetically shifted resonances that arise from protons in close proximity to a Fe(III)Fe(II) center. Five of these resonances arose from solvent-exchangeable protons, and four of these have been assigned to NH protons on metal-bound histidines. A 1.74-A resolution crystal structure of the enzyme revealed that although GLX2-5 shares a number of structural features with human GLX2, several important differences exist. These data demonstrate that mitochondrial glyoxalase 2 can accommodate a number of different metal centers and that the predominant metal center is Fe(III)Zn(II). Structural studies on a mitochondrial glyoxalase II.,Marasinghe GP, Sander IM, Bennett B, Periyannan G, Yang KW, Makaroff CA, Crowder MW J Biol Chem. 2005 Dec 9;280(49):40668-75. Epub 2005 Oct 14. PMID:16227621[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
|
| ||||||||||||||||||||