1fro

<StructureSection load='1fro' size='340' side='right' caption='[[1fro]], [[Resolution|resolution]] 2.20&Aring;' scene=''>

<table><tr><td colspan='2'>[[1fro]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FRO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1FRO FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GSB:S-BENZYL-GLUTATHIONE'>GSB</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1fro FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fro OCA], [http://pdbe.org/1fro PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1fro RCSB], [http://www.ebi.ac.uk/pdbsum/1fro PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1fro ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/LGUL_HUMAN LGUL_HUMAN]] Catalyzes the conversion of hemimercaptal, formed from methylglyoxal and glutathione, to S-lactoylglutathione. Involved in the regulation of TNF-induced transcriptional activity of NF-kappa-B.<ref>PMID:19199007</ref>

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== Publication Abstract from PubMed ==

The zinc metalloenzyme glyoxalase I catalyses the glutathione-dependent inactivation of toxic methylglyoxal. The structure of the dimeric human enzyme in complex with S-benzyl-glutathione has been determined by multiple isomorphous replacement (MIR) and refined at 2.2 A resolution. Each monomer consists of two domains. Despite only low sequence homology between them, these domains are structurally equivalent and appear to have arisen by a gene duplication. On the other hand, there is no structural homology to the 'glutathione binding domain' found in other glutathione-linked proteins. 3D domain swapping of the N- and C-terminal domains has resulted in the active site being situated in the dimer interface, with the inhibitor and essential zinc ion interacting with side chains from both subunits. Two structurally equivalent residues from each domain contribute to a square pyramidal coordination of the zinc ion, rarely seen in zinc enzymes. Comparison of glyoxalase I with other known structures shows the enzyme to belong to a new structural family which includes the Fe2+-dependent dihydroxybiphenyl dioxygenase and the bleomycin resistance protein. This structural family appears to allow members to form with or without domain swapping.

 

<div class="pdbe-citations 1fro" style="background-color:#fffaf0;"></div>

[[Category: Human]]

[[Category: Lactoylglutathione lyase]]

[[Category: Cameron, A D]]

[[Category: Jones, T A]]

[[Category: Glyoxalase i]]