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2c8l

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Revision as of 06:32, 10 September 2015

CRYSTAL STRUCTURE OF (SR) CALCIUM-ATPASE E2(TG) FORM

Structural highlights

2c8l is a 1 chain structure with sequence from Oryctolagus cuniculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	1fqu, 1iwo, 1kju, 1su4, 1t5s, 1t5t, 1vfp, 1wpe, 1wpg, 1xp5, 2agv, 2by4, 2c88, 2c8k
Activity:	Calcium-transporting ATPase, with EC number 3.6.3.8
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[AT2A1_RABIT] This magnesium-dependent enzyme catalyzes the hydrolysis of ATP coupled with the translocation of calcium from the cytosol to the sarcoplasmic reticulum lumen. Contributes to calcium sequestration involved in muscular excitation/contraction (By similarity).

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

We present crystal structures of the calcium-free E2 state of the sarcoplasmic reticulum Ca2+ -ATPase, stabilized by the inhibitor thapsigargin and the ATP analog AMPPCP. The structures allow us to describe the ATP binding site in a modulatory mode uncoupled from the Asp351 phosphorylation site. The Glu439 side chain interacts with AMPPCP via an Mg2+ ion in accordance with previous Fe2+ -cleavage studies implicating this residue in the ATPase cycle and in magnesium binding. Functional data on Ca2+ mediated activation indicate that the crystallized state represents an initial stage of ATP modulated deprotonation of E2, preceding the binding of Ca2+ ions in the membrane from the cytoplasmic side. We propose a mechanism of Ca2+ activation of phosphorylation leading directly from the compact E2-ATP form to the Ca2E1-ATP state. In addition, a role of Glu439 in ATP modulation of other steps of the functional cycle is suggested.

Modulatory and catalytic modes of ATP binding by the calcium pump.,Jensen AM, Sorensen TL, Olesen C, Moller JV, Nissen P EMBO J. 2006 Jun 7;25(11):2305-14. Epub 2006 May 18. PMID:16710301^[1]

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

References

↑ Jensen AM, Sorensen TL, Olesen C, Moller JV, Nissen P. Modulatory and catalytic modes of ATP binding by the calcium pump. EMBO J. 2006 Jun 7;25(11):2305-14. Epub 2006 May 18. PMID:16710301

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/2c8l"

@@ Line 6: / Line 6: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1fqu|1fqu]], [[1iwo|1iwo]], [[1kju|1kju]], [[1su4|1su4]], [[1t5s|1t5s]], [[1t5t|1t5t]], [[1vfp|1vfp]], [[1wpe|1wpe]], [[1wpg|1wpg]], [[1xp5|1xp5]], [[2agv|2agv]], [[2by4|2by4]], [[2c88|2c88]], [[2c8k|2c8k]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Calcium-transporting_ATPase Calcium-transporting ATPase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.3.8 3.6.3.8] </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=2c8l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c8l OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2c8l RCSB], [http://www.ebi.ac.uk/pdbsum/2c8l 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=2c8l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c8l OCA], [http://pdbe.org/2c8l PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2c8l RCSB], [http://www.ebi.ac.uk/pdbsum/2c8l 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 2c8l" style="background-color:#fffaf0;"></div>
 ==See Also==

2c8l

From Proteopedia

Revision as of 06:32, 10 September 2015

CRYSTAL STRUCTURE OF (SR) CALCIUM-ATPASE E2(TG) FORM

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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