This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

4hqj

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 11:21, 4 August 2016

Crystal structure of Na+,K+-ATPase in the Na+-bound state

Structural highlights

4hqj is a 6 chain structure with sequence from Sus scrofa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , , ,
Activity:	Sodium/potassium-exchanging ATPase, with EC number 3.6.3.9
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[AT1A1_PIG] This is the catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of sodium and potassium ions across the plasma membrane. This action creates the electrochemical gradient of sodium and potassium ions, providing the energy for active transport of various nutrients. [AT1B1_PIG] This is the non-catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of Na(+) and K(+) ions across the plasma membrane. The beta subunit regulates, through assembly of alpha/beta heterodimers, the number of sodium pumps transported to the plasma membrane.

Publication Abstract from PubMed

The Na+, K+-adenosine triphosphatase (ATPase) maintains the electrochemical gradients of Na+ and K+ across the plasma membrane-a prerequisite for electrical excitability and secondary transport. Hitherto, structural information has been limited to K+-bound or ouabain-blocked forms. We present the crystal structure of a Na+-bound Na+,K+-ATPase as determined at 4.3 A resolution. Compared with the K+-bound form, large conformational changes are observed in the alpha subunit, whereas the beta and gamma subunit structures are maintained. The locations of the three Na+ sites are indicated with the unique site III at the recently suggested IIIb, as further supported by electrophysiological studies on leak currents. Extracellular release of the third Na+ from IIIb through IIIa, followed by exchange of Na+ for K+ at sites I and II, is suggested.

Crystal Structure of Na+, K+-ATPase in the Na+-Bound State.,Nyblom M, Poulsen H, Gourdon P, Reinhard L, Andersson M, Lindahl E, Fedosova N, Nissen P Science. 2013 Sep 19. PMID:24051246^[1]

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

References

↑ Nyblom M, Poulsen H, Gourdon P, Reinhard L, Andersson M, Lindahl E, Fedosova N, Nissen P. Crystal Structure of Na+, K+-ATPase in the Na+-Bound State. Science. 2013 Sep 19. PMID:24051246 doi:10.1126/science.1243352

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4hqj"

@@ Line 1: / Line 1: @@
 ==Crystal structure of Na+,K+-ATPase in the Na+-bound state==
 <StructureSection load='4hqj' size='340' side='right' caption='[[4hqj]], [[Resolution|resolution]] 4.30&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=ALF:TETRAFLUOROALUMINATE+ION'>ALF</scene>, <scene name='pdbligand=CLR:CHOLESTEROL'>CLR</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Sodium/potassium-exchanging_ATPase Sodium/potassium-exchanging ATPase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.3.9 3.6.3.9] </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=4hqj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hqj OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4hqj RCSB], [http://www.ebi.ac.uk/pdbsum/4hqj 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=4hqj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hqj OCA], [http://pdbe.org/4hqj PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4hqj RCSB], [http://www.ebi.ac.uk/pdbsum/4hqj PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4hqj ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4hqj" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[ATPase|ATPase]]
 == References ==
 <references/>

4hqj

From Proteopedia

Revision as of 11:21, 4 August 2016

Crystal structure of Na+,K+-ATPase in the Na+-bound state

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox