1fa8: Difference between revisions

From Proteopedia
Jump to navigation Jump to search
← Older edit
No edit summary
No edit summary
 
(6 intermediate revisions by the same user not shown)
Line 1: Line 1:
==CRYSTAL STRUCTURE OF THE APO FORM GLYOXALASE I OF ESCHERICHIA COLI==
==CRYSTAL STRUCTURE OF THE APO FORM GLYOXALASE I OF ESCHERICHIA COLI==
<StructureSection load='1fa8' size='340' side='right' caption='[[1fa8]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
<StructureSection load='1fa8' size='340' side='right'caption='[[1fa8]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1fa8]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FA8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1FA8 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1fa8]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FA8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FA8 FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1f9z|1f9z]], [[1fa5|1fa5]], [[1fa6|1fa6]], [[1fa7|1fa7]], [[1fro|1fro]]</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]] 1.7&#8491;</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lactoylglutathione_lyase Lactoylglutathione lyase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.4.1.5 4.4.1.5] </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=1fa8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fa8 OCA], [https://pdbe.org/1fa8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fa8 RCSB], [https://www.ebi.ac.uk/pdbsum/1fa8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fa8 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=1fa8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fa8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1fa8 RCSB], [http://www.ebi.ac.uk/pdbsum/1fa8 PDBsum]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/LGUL_ECOLI LGUL_ECOLI] Catalyzes the conversion of hemimercaptal, formed from methylglyoxal and glutathione, to S-lactoylglutathione.<ref>PMID:10913283</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/fa/1fa8_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fa/1fa8_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1fa8 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The metalloenzyme glyoxalase I (GlxI) converts the nonenzymatically produced hemimercaptal of cytotoxic methylglyoxal and glutathione to nontoxic S-D-lactoylglutathione. Human GlxI, for which the structure is known, is active in the presence of Zn(2+). Unexpectedly, the Escherichia coli enzyme is inactive in the presence of Zn(2+) and is maximally active with Ni(2+). To understand this difference in metal activation and also to obtain a representative of the bacterial enzymes, the structure of E. coli Ni(2+)-GlxI has been determined. Structures have also been determined for the apo enzyme as well as complexes with Co(2+), Cd(2+), and Zn(2+). It is found that each of the protein-metal complexes that is catalytically active has octahedral geometry. This includes the complexes of the E. coli enzyme with Ni(2+), Co(2+), and Cd(2+), as well as the structures reported for the human Zn(2+) enzyme. Conversely, the complex of the E. coli enzyme with Zn(2+) has trigonal bipyramidal coordination and is inactive. This mode of coordination includes four protein ligands plus a single water molecule. In contrast, the coordination in the active forms of the enzyme includes two water molecules bound to the metal ion, suggesting that this may be a key feature of the catalytic mechanism. A comparison of the human and E. coli enzymes suggests that there are differences between the active sites that might be exploited for therapeutic use.
Determination of the structure of Escherichia coli glyoxalase I suggests a structural basis for differential metal activation.,He MM, Clugston SL, Honek JF, Matthews BW Biochemistry. 2000 Aug 1;39(30):8719-27. PMID:10913283<ref>PMID:10913283</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>


==See Also==
==See Also==
*[[Glyoxalase|Glyoxalase]]
*[[Glyoxalase 3D structures|Glyoxalase 3D structures]]
== References ==
== References ==
<references/>
<references/>
Line 33: Line 27:
</StructureSection>
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Lactoylglutathione lyase]]
[[Category: Large Structures]]
[[Category: Clugston, S L]]
[[Category: Clugston SL]]
[[Category: He, M M]]
[[Category: He MM]]
[[Category: Honek, J F]]
[[Category: Honek JF]]
[[Category: Matthews, B W]]
[[Category: Matthews BW]]
[[Category: Apo enzyme]]
[[Category: Beta-alpha-beta-beta-beta motif]]
[[Category: Homodimer]]
[[Category: Lyase]]

Latest revision as of 10:12, 7 February 2024

CRYSTAL STRUCTURE OF THE APO FORM GLYOXALASE I OF ESCHERICHIA COLICRYSTAL STRUCTURE OF THE APO FORM GLYOXALASE I OF ESCHERICHIA COLI

Structural highlights

1fa8 is a 2 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.7Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

LGUL_ECOLI Catalyzes the conversion of hemimercaptal, formed from methylglyoxal and glutathione, to S-lactoylglutathione.[1]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

References

  1. ↑ He MM, Clugston SL, Honek JF, Matthews BW. Determination of the structure of Escherichia coli glyoxalase I suggests a structural basis for differential metal activation. Biochemistry. 2000 Aug 1;39(30):8719-27. PMID:10913283

1fa8, resolution 1.70Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA
Retrieved from "https://proteopedia.openfox.io/wiki/index.php?title=1fa8&oldid=4043306"