1u88

From Proteopedia

(Difference between revisions)
Jump to: navigation, search
(New page: 200px<br /><applet load="1u88" size="450" color="white" frame="true" align="right" spinBox="true" caption="1u88, resolution 3.50&Aring;" /> '''Crystal Structure Of...)
Current revision (06:16, 3 April 2024) (edit) (undo)
 
(15 intermediate revisions not shown.)
Line 1: Line 1:
-
[[Image:1u88.gif|left|200px]]<br /><applet load="1u88" size="450" color="white" frame="true" align="right" spinBox="true"
 
-
caption="1u88, resolution 3.50&Aring;" />
 
-
'''Crystal Structure Of The 26 Kda Glutathione S-Transferase Y7F mutant From Schistosoma Japonicum Complexed With S-Octyl Glutathione'''<br />
 
-
==Overview==
+
==Crystal Structure Of The 26 Kda Glutathione S-Transferase Y7F mutant From Schistosoma Japonicum Complexed With S-Octyl Glutathione==
-
Glutathione S-transferases are a family of multifunctional enzymes, involved in the metabolism of drugs and xenobiotics. Two tyrosine, residues, Tyr 7 and Tyr 111, in the active site of the enzyme play an, important role in the binding and catalysis of substrate ligands. The, crystal structures of Schistosoma japonicum glutathione S-transferase, tyrosine 7 to phenylalanine mutant [SjGST(Y7F)] in complex with the, substrate glutathione (GSH) and the competitive inhibitor, S-octylglutathione (S-octyl-GSH) have been obtained. These new structural, data combined with fluorescence spectroscopy and thermodynamic data, obtained by means of isothermal titration calorimetry, allow for detailed, characterization of the ligand-binding process. The binding of S-octyl-GSH, to SjGST(Y7F) is enthalpically and entropically driven at temperatures, below 30 degrees C. The stoichiometry of the binding is one molecule of, S-octyl-GSH per mutant dimer, whereas shorter alkyl derivatives bind with, a stoichiometry of two molecules per mutant dimer. The SjGST(Y7F).GSH, structure showed no major structural differences compared to the wild-type, enzyme. In contrast, the structure of SjGST(Y7F).S-octyl-GSH showed, asymmetric binding of S-octyl-GSH. This lack of symmetry is reflected in, the lower symmetry space group of the SjGST(Y7F).S-octyl-GSH crystals, (P6(3)) compared to that of the SjGST(Y7F).GSH crystals (P6(3)22)., Moreover, the binding of S-octyl-GSH to the A subunit is accompanied by, conformational changes that may be responsible for the lack of binding to, the B subunit.
+
<StructureSection load='1u88' size='340' side='right'caption='[[1u88]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
 +
== Structural highlights ==
 +
<table><tr><td colspan='2'>[[1u88]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Schistosoma_japonicum Schistosoma japonicum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1U88 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1U88 FirstGlance]. <br>
 +
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.5&#8491;</td></tr>
 +
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GTY:L-GAMMA-GLUTAMYL-S-OCTYL-D-CYSTEINYLGLYCINE'>GTY</scene></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=1u88 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1u88 OCA], [https://pdbe.org/1u88 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1u88 RCSB], [https://www.ebi.ac.uk/pdbsum/1u88 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1u88 ProSAT]</span></td></tr>
 +
</table>
 +
== Function ==
 +
[https://www.uniprot.org/uniprot/GST26_SCHJA GST26_SCHJA] Conjugation of reduced glutathione to a wide number of exogenous and endogenous hydrophobic electrophiles. GST isoenzymes appear to play a central role in the parasite detoxification system. Other functions are also suspected including a role in increasing the solubility of haematin in the parasite gut.
 +
== 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/u8/1u88_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=1u88 ConSurf].
 +
<div style="clear:both"></div>
-
==About this Structure==
+
==See Also==
-
1U88 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Schistosoma_japonicum Schistosoma japonicum] with GTY as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Glutathione_transferase Glutathione transferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.18 2.5.1.18] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1U88 OCA].
+
*[[Glutathione S-transferase 3D structures|Glutathione S-transferase 3D structures]]
-
 
+
__TOC__
-
==Reference==
+
</StructureSection>
-
Crystallographic and thermodynamic analysis of the binding of S-octylglutathione to the Tyr 7 to Phe mutant of glutathione S-transferase from Schistosoma japonicum., Andujar-Sanchez M, Smith AW, Clemente-Jimenez JM, Rodriguez-Vico F, Las Heras-Vazquez FJ, Jara-Perez V, Camara-Artigas A, Biochemistry. 2005 Feb 1;44(4):1174-83. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15667211 15667211]
+
[[Category: Large Structures]]
-
[[Category: Glutathione transferase]]
+
[[Category: Schistosoma japonicum]]
[[Category: Schistosoma japonicum]]
-
[[Category: Single protein]]
+
[[Category: Camara-Artigas A]]
-
[[Category: Camara-Artigas, A.]]
+
[[Category: Smith AW]]
-
[[Category: Smith, A.W.]]
+
-
[[Category: GTY]]
+
-
[[Category: transferase]]
+
-
 
+
-
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 03:55:09 2007''
+

Current revision

Crystal Structure Of The 26 Kda Glutathione S-Transferase Y7F mutant From Schistosoma Japonicum Complexed With S-Octyl Glutathione

PDB ID 1u88

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1u88"
Personal tools