3b8e

<table><tr><td colspan='2'>[[3b8e]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. The October 2009 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Sodium-Potassium Pump'' by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2009_10 10.2210/rcsb_pdb/mom_2009_10]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B8E OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=3B8E FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MF4:TETRAFLUOROMAGNESATE(2-)'>MF4</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PC1:1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE'>PC1</scene>, <scene name='pdbligand=RB:RUBIDIUM+ION'>RB</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://proteopedia.org/fgij/fg.htm?mol=3b8e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3b8e OCA], [http://pdbe.org/3b8e PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3b8e RCSB], [http://www.ebi.ac.uk/pdbsum/3b8e PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3b8e ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/AT1A1_PIG 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. [[http://www.uniprot.org/uniprot/AT1B1_PIG 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.

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== Publication Abstract from PubMed ==

The Na+,K+-ATPase generates electrochemical gradients for sodium and potassium that are vital to animal cells, exchanging three sodium ions for two potassium ions across the plasma membrane during each cycle of ATP hydrolysis. Here we present the X-ray crystal structure at 3.5 A resolution of the pig renal Na+,K+-ATPase with two rubidium ions bound (as potassium congeners) in an occluded state in the transmembrane part of the alpha-subunit. Several of the residues forming the cavity for rubidium/potassium occlusion in the Na+,K+-ATPase are homologous to those binding calcium in the Ca2+-ATPase of sarco(endo)plasmic reticulum. The beta- and gamma-subunits specific to the Na+,K+-ATPase are associated with transmembrane helices alphaM7/alphaM10 and alphaM9, respectively. The gamma-subunit corresponds to a fragment of the V-type ATPase c subunit. The carboxy terminus of the alpha-subunit is contained within a pocket between transmembrane helices and seems to be a novel regulatory element controlling sodium affinity, possibly influenced by the membrane potential.

Crystal structure of the sodium-potassium pump.,Morth JP, Pedersen BP, Toustrup-Jensen MS, Sorensen TL, Petersen J, Andersen JP, Vilsen B, Nissen P Nature. 2007 Dec 13;450(7172):1043-9. PMID:18075585<ref>PMID:18075585</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Sodium/potassium-exchanging ATPase]]

[[Category: Andersen, J P]]

[[Category: Morth, J P]]

[[Category: Nissen, P]]

[[Category: Pedersen, P B]]

[[Category: Petersen, J]]

[[Category: Soerensen, T L.M]]

[[Category: Toustrup-Jensen, M S]]

[[Category: Vilsen, B]]

[[Category: Transmembrane]]