1urh

From Proteopedia

(Difference between revisions)

Revision as of 07:30, 28 March 2018

The "Rhodanese" fold and catalytic mechanism of 3-mercaptopyruvate sulfotransferases: Crystal structure of SseA from Escherichia coli

Structural highlights

1urh is a 2 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Activity:	3-mercaptopyruvate sulfurtransferase, with EC number 2.8.1.2
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[THTM_ECOLI] Transfers a sulfur ion to cyanide or to other thiol compounds. Also has weak rhodanese activity (130-fold lower). Its participation in detoxification of cyanide may be small. May be involved in the enhancement of serine sensitivity.

Evolutionary Conservation

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

Publication Abstract from PubMed

3-Mercaptopyruvate sulfurtransferases (MSTs) catalyze, in vitro, the transfer of a sulfur atom from substrate to cyanide, yielding pyruvate and thiocyanate as products. They display clear structural homology with the protein fold observed in the rhodanese sulfurtransferase family, composed of two structurally related domains. The role of MSTs in vivo, as well as their detailed molecular mechanisms of action have been little investigated. Here, we report the crystal structure of SseA, a MST from Escherichia coli, which is the first MST three-dimensional structure disclosed to date. SseA displays specific structural differences relative to eukaryotic and prokaryotic rhodaneses. In particular, conformational variation of the rhodanese active site loop, hosting the family invariant catalytic Cys residue, may support a new sulfur transfer mechanism involving Cys237 as the nucleophilic species and His66, Arg102 and Asp262 as residues assisting catalysis.

The "rhodanese" fold and catalytic mechanism of 3-mercaptopyruvate sulfurtransferases: crystal structure of SseA from Escherichia coli.,Spallarossa A, Forlani F, Carpen A, Armirotti A, Pagani S, Bolognesi M, Bordo D J Mol Biol. 2004 Jan 9;335(2):583-93. PMID:14672665^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Spallarossa A, Forlani F, Carpen A, Armirotti A, Pagani S, Bolognesi M, Bordo D. The "rhodanese" fold and catalytic mechanism of 3-mercaptopyruvate sulfurtransferases: crystal structure of SseA from Escherichia coli. J Mol Biol. 2004 Jan 9;335(2):583-93. PMID:14672665

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1urh"

@@ Line 1: / Line 1: @@
-==THE "RHODANESE" FOLD AND CATALYTIC MECHANISM OF 3-MERCAPTOPYRUVATE SULFOTRANSFERASES: CRYSTAL STRUCTURE OF SSEA FROM ESCHERICHIA COLI==
+==The "Rhodanese" fold and catalytic mechanism of 3-mercaptopyruvate sulfotransferases: Crystal structure of SseA from Escherichia coli==
 <StructureSection load='1urh' size='340' side='right' caption='[[1urh]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
 == Structural highlights ==
@@ Line 6: / Line 7: @@
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CSS:S-MERCAPTOCYSTEINE'>CSS</scene></td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/3-mercaptopyruvate_sulfurtransferase 3-mercaptopyruvate sulfurtransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.8.1.2 2.8.1.2] </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=1urh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1urh OCA], [http://pdbe.org/1urh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1urh RCSB], [http://www.ebi.ac.uk/pdbsum/1urh PDBsum]</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=1urh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1urh OCA], [http://pdbe.org/1urh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1urh RCSB], [http://www.ebi.ac.uk/pdbsum/1urh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1urh ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 14: / Line 15: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ur/1urh_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ur/1urh_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1urh

From Proteopedia

Revision as of 07:30, 28 March 2018

The "Rhodanese" fold and catalytic mechanism of 3-mercaptopyruvate sulfotransferases: Crystal structure of SseA from Escherichia coli

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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