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1wpg

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Revision as of 16:00, 11 April 2018

Crystal structure of the SR CA2+-ATPase with MGF4

Structural highlights

1wpg is a 4 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:	1su4, 1iwo, 1vfp, 1wpe
Activity:	Calcium-transporting ATPase, with EC number 3.6.3.8
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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

P-type ion transporting ATPases are ATP-powered ion pumps that establish ion concentration gradients across biological membranes. Transfer of bound cations to the lumenal or extracellular side occurs while the ATPase is phosphorylated. Here we report at 2.3 A resolution the structure of the calcium-ATPase of skeletal muscle sarcoplasmic reticulum, a representative P-type ATPase that is crystallized in the absence of Ca2+ but in the presence of magnesium fluoride, a stable phosphate analogue. This and other crystal structures determined previously provide atomic models for all four principal states in the reaction cycle. These structures show that the three cytoplasmic domains rearrange to move six out of ten transmembrane helices, thereby changing the affinity of the Ca2+-binding sites and the gating of the ion pathway. Release of ADP triggers the opening of the lumenal gate and release of phosphate its closure, effected mainly through movement of the A-domain, the actuator of transmembrane gates.

Lumenal gating mechanism revealed in calcium pump crystal structures with phosphate analogues.,Toyoshima C, Nomura H, Tsuda T Nature. 2004 Nov 18;432(7015):361-8. Epub 2004 Sep 26. PMID:15448704^[1]

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

References

↑ Toyoshima C, Nomura H, Tsuda T. Lumenal gating mechanism revealed in calcium pump crystal structures with phosphate analogues. Nature. 2004 Nov 18;432(7015):361-8. Epub 2004 Sep 26. PMID:15448704 doi:http://dx.doi.org/10.1038/nature02981

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/1wpg"

@@ Line 1: / Line 1: @@
 ==Crystal structure of the SR CA2+-ATPase with MGF4==
 <StructureSection load='1wpg' size='340' side='right' caption='[[1wpg]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1su4|1su4]], [[1iwo|1iwo]], [[1vfp|1vfp]], [[1wpe|1wpe]]</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=1wpg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1wpg OCA], [http://pdbe.org/1wpg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1wpg RCSB], [http://www.ebi.ac.uk/pdbsum/1wpg 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=1wpg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1wpg OCA], [http://pdbe.org/1wpg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1wpg RCSB], [http://www.ebi.ac.uk/pdbsum/1wpg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1wpg 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/wp/1wpg_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/wp/1wpg_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

1wpg

From Proteopedia

Revision as of 16:00, 11 April 2018

Crystal structure of the SR CA2+-ATPase with MGF4

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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