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[[Image:1n2a.png|left|200px]]


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==Crystal Structure of a Bacterial Glutathione Transferase from Escherichia coli with Glutathione Sulfonate in the Active Site==
The line below this paragraph, containing "STRUCTURE_1n2a", creates the "Structure Box" on the page.
<StructureSection load='1n2a' size='340' side='right'caption='[[1n2a]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)  
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1n2a]] 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=1N2A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1N2A FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</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>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GTS:GLUTATHIONE+SULFONIC+ACID'>GTS</scene></td></tr>
{{STRUCTURE_1n2a| PDB=1n2a |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1n2a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1n2a OCA], [https://pdbe.org/1n2a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1n2a RCSB], [https://www.ebi.ac.uk/pdbsum/1n2a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1n2a ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/GSTA_ECOLI GSTA_ECOLI] Catalyzes the conjugation of reduced glutathione (GSH) to a wide number of exogenous and endogenous hydrophobic electrophiles. Shows activity toward 1-chloro-2,4-dinitrobenzene (CDNB) and ethacrynic acid. Also possesses thiol:disulfide oxidoreductase activity, using GSH to reduce bis-(2-hydroxyethyl) disulfide (HEDS). Has a low level of glutathione-dependent peroxidase activity toward cumene hydroperoxide. Is important for defense against oxidative stress, probably via its peroxidase activity.<ref>PMID:7798255</ref> <ref>PMID:2185038</ref> <ref>PMID:17018556</ref> <ref>PMID:18778244</ref>
== 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/n2/1n2a_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1n2a ConSurf].
<div style="clear:both"></div>


===Crystal Structure of a Bacterial Glutathione Transferase from Escherichia coli with Glutathione Sulfonate in the Active Site===
==See Also==
 
*[[Glutathione S-transferase 3D structures|Glutathione S-transferase 3D structures]]
 
== References ==
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{{ABSTRACT_PUBMED_14635120}}
 
==About this Structure==
1N2A is a [[Single protein]] structure of 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=1N2A OCA].
 
==Reference==
Conserved structural elements in glutathione transferase homologues encoded in the genome of Escherichia coli., Rife CL, Parsons JF, Xiao G, Gilliland GL, Armstrong RN, Proteins. 2003 Dec 1;53(4):777-82. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14635120 14635120]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Glutathione transferase]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Armstrong RN]]
[[Category: Armstrong, R N.]]
[[Category: Gilliland GL]]
[[Category: Gilliland, G L.]]
[[Category: Parsons JF]]
[[Category: Parsons, J F.]]
[[Category: Rife CL]]
[[Category: Rife, C L.]]
[[Category: Xiao G]]
[[Category: Xiao, G.]]
[[Category: Transferase]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 16:07:35 2008''

Latest revision as of 10:51, 14 February 2024

Crystal Structure of a Bacterial Glutathione Transferase from Escherichia coli with Glutathione Sulfonate in the Active SiteCrystal Structure of a Bacterial Glutathione Transferase from Escherichia coli with Glutathione Sulfonate in the Active Site

Structural highlights

1n2a 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 1.9Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

GSTA_ECOLI Catalyzes the conjugation of reduced glutathione (GSH) to a wide number of exogenous and endogenous hydrophobic electrophiles. Shows activity toward 1-chloro-2,4-dinitrobenzene (CDNB) and ethacrynic acid. Also possesses thiol:disulfide oxidoreductase activity, using GSH to reduce bis-(2-hydroxyethyl) disulfide (HEDS). Has a low level of glutathione-dependent peroxidase activity toward cumene hydroperoxide. Is important for defense against oxidative stress, probably via its peroxidase activity.[1] [2] [3] [4]

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. ↑ Nishida M, Kong KH, Inoue H, Takahashi K. Molecular cloning and site-directed mutagenesis of glutathione S-transferase from Escherichia coli. The conserved tyrosyl residue near the N terminus is not essential for catalysis. J Biol Chem. 1994 Dec 23;269(51):32536-41. PMID:7798255
  2. ↑ Arca P, Garcia P, Hardisson C, Suarez JE. Purification and study of a bacterial glutathione S-transferase. FEBS Lett. 1990 Apr 9;263(1):77-9. PMID:2185038
  3. ↑ Kanai T, Takahashi K, Inoue H. Three distinct-type glutathione S-transferases from Escherichia coli important for defense against oxidative stress. J Biochem. 2006 Nov;140(5):703-11. Epub 2006 Oct 3. PMID:17018556 doi:http://dx.doi.org/10.1093/jb/mvj199
  4. ↑ Wang XY, Zhang ZR, Perrett S. Characterization of the activity and folding of the glutathione transferase from Escherichia coli and the roles of residues Cys(10) and His(106). Biochem J. 2009 Jan 1;417(1):55-64. doi: 10.1042/BJ20071702. PMID:18778244 doi:http://dx.doi.org/10.1042/BJ20071702

1n2a, resolution 1.90Å

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