1izy

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==Crystal structure of Hsp31==
==Crystal structure of Hsp31==
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<StructureSection load='1izy' size='340' side='right' caption='[[1izy]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
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<StructureSection load='1izy' size='340' side='right'caption='[[1izy]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1izy]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IZY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1IZY FirstGlance]. <br>
<table><tr><td colspan='2'>[[1izy]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IZY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1IZY FirstGlance]. <br>
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</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=X:2-DEOXY-N7-(8,9-DIHYDRO-9-HYDROXY-10-DEHYDROXY-AFLATOXIN)GUANOSINE+MONOPHOSPHATE'>X</scene></td></tr>
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</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1izz|1izz]]</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1izz|1izz]]</td></tr>
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<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=1izy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1izy OCA], [http://pdbe.org/1izy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1izy RCSB], [http://www.ebi.ac.uk/pdbsum/1izy PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1izy 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=1izy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1izy OCA], [http://pdbe.org/1izy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1izy RCSB], [http://www.ebi.ac.uk/pdbsum/1izy PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1izy ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/HCHA_ECOLI HCHA_ECOLI]] Functions as a holding molecular chaperone (holdase) which stabilizes unfolding intermediates and rapidly releases them in an active form once stress has abated. Plays an important role in protecting cells from severe heat shock and starvation, as well as in acid resistance of stationary-phase cells. It uses temperature-induced exposure of structured hydrophobic domains to capture and stabilizes early unfolding and denatured protein intermediates under severe thermal stress. Catalyzes the conversion of methylglyoxal (MG) to D-lactate in a single glutathione (GSH)-independent step. It can also use phenylglyoxal as substrate. Glyoxalase activity protects cells against dicarbonyl stress. Displays an aminopeptidase activity that is specific against peptide substrates with alanine or basic amino acids (lysine, arginine) at N-terminus.<ref>PMID:7848303</ref> <ref>PMID:12235139</ref> <ref>PMID:12565879</ref> <ref>PMID:14731284</ref> <ref>PMID:15550391</ref> <ref>PMID:16796689</ref> <ref>PMID:17158627</ref> <ref>PMID:21696459</ref>
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[[http://www.uniprot.org/uniprot/HCHA_ECO57 HCHA_ECO57]] Protein and nucleotide deglycase that catalyzes the deglycation of the Maillard adducts formed between amino groups of proteins or nucleotides and reactive carbonyl groups of glyoxals. Thus, functions as a protein deglycase that repairs methylglyoxal- and glyoxal-glycated proteins, and releases repaired proteins and lactate or glycolate, respectively. Deglycates cysteine, arginine and lysine residues in proteins, and thus reactivates these proteins by reversing glycation by glyoxals. Acts on early glycation intermediates (hemithioacetals and aminocarbinols), preventing the formation of Schiff bases and advanced glycation endproducts (AGE). Also functions as a nucleotide deglycase able to repair glycated guanine in the free nucleotide pool (GTP, GDP, GMP, dGTP) and in DNA and RNA. Is thus involved in a major nucleotide repair system named guanine glycation repair (GG repair), dedicated to reversing methylglyoxal and glyoxal damage via nucleotide sanitization and direct nucleic acid repair. Plays an important role in protecting cells from carbonyl stress.[HAMAP-Rule:MF_01046]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</StructureSection>
</StructureSection>
[[Category: Bacillus coli migula 1895]]
[[Category: Bacillus coli migula 1895]]
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[[Category: Large Structures]]
[[Category: Cha, S S]]
[[Category: Cha, S S]]
[[Category: Lee, S J]]
[[Category: Lee, S J]]

Revision as of 10:00, 30 October 2019

Crystal structure of Hsp31

PDB ID 1izy

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