2h89

From Proteopedia

(Difference between revisions)

Revision as of 21:45, 10 September 2015

Avian Respiratory Complex II with Malonate Bound

Structural highlights

2h89 is a 4 chain structure with sequence from Chick. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , , , , , , , ,
Related:	2fbw, 1yq3, 1yq4, 1zoy, 1zp0
Activity:	Succinate dehydrogenase (quinone), with EC number 1.3.5.1
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[DHSD_CHICK] Membrane-anchoring subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q). [DHSA_CHICK] Flavoprotein (FP) subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q). [DHSB_CHICK] Iron-sulfur protein (IP) subunit of succinate dehydrogenase (SDH) that is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q).

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

Mitochondrial Complex II (succinate:ubiquinone oxidoreductase) is purified in a partially inactivated state, which can be activated by removal of tightly bound oxaloacetate (E.B. Kearney, et al., Biochem. Biophys. Res. Commun. 49 1115-1121). We crystallized Complex II in the presence of oxaloacetate or with the endogenous inhibitor bound. The structure showed a ligand essentially identical to the "malate-like intermediate" found in Shewanella Flavocytochrome c crystallized with fumarate (P. Taylor, et al., Nat. Struct. Biol. 6 1108-1112) Crystallization of Complex II in the presence of excess fumarate also gave the malate-like intermediate or a mixture of that and fumarate at the active site. In order to more conveniently monitor the occupation state of the dicarboxylate site, we are developing a library of UV/Vis spectral effects induced by binding different ligands to the site. Treatment with fumarate results in rapid development of the fumarate difference spectrum and then a very slow conversion into a species spectrally similar to the OAA-liganded complex. Complex II is known to be capable of oxidizing malate to the enol form of oxaloacetate (Y.O. Belikova, et al., Biochim. Biophys. Acta 936 1-9). The observations above suggest it may also be capable of interconverting fumarate and malate. It may be useful for understanding the mechanism and regulation of the enzyme to identify the malate-like intermediate and its pathway of formation from oxaloacetate or fumarate.

Crystallographic studies of the binding of ligands to the dicarboxylate site of Complex II, and the identity of the ligand in the "oxaloacetate-inhibited" state.,Huang LS, Shen JT, Wang AC, Berry EA Biochim Biophys Acta. 2006 Sep-Oct;1757(9-10):1073-83. Epub 2006 Jul 12. PMID:16935256^[1]

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

References

↑ Huang LS, Shen JT, Wang AC, Berry EA. Crystallographic studies of the binding of ligands to the dicarboxylate site of Complex II, and the identity of the ligand in the "oxaloacetate-inhibited" state. Biochim Biophys Acta. 2006 Sep-Oct;1757(9-10):1073-83. Epub 2006 Jul 12. PMID:16935256 doi:10.1016/j.bbabio.2006.06.015

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/2h89"

@@ Line 6: / Line 6: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2fbw|2fbw]], [[1yq3|1yq3]], [[1yq4|1yq4]], [[1zoy|1zoy]], [[1zp0|1zp0]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Succinate_dehydrogenase_(quinone) Succinate dehydrogenase (quinone)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.3.5.1 1.3.5.1] </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=2h89 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h89 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2h89 RCSB], [http://www.ebi.ac.uk/pdbsum/2h89 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=2h89 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2h89 OCA], [http://pdbe.org/2h89 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2h89 RCSB], [http://www.ebi.ac.uk/pdbsum/2h89 PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 28: / Line 28: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2h89" style="background-color:#fffaf0;"></div>
 ==See Also==

2h89

From Proteopedia

Revision as of 21:45, 10 September 2015

Avian Respiratory Complex II with Malonate Bound

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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