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2hmu

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Revision as of 08:14, 18 October 2017

Diamond-shaped octameric ring structure of an RCK domain with ATP bound

Structural highlights

2hmu is a 2 chain structure with sequence from "bacillus_globigii"_migula_1900 "bacillus globigii" migula 1900. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	1lsu, 1lss, 1lnq, 2hms, 2hmt, 2hmv, 2hmw
Gene:	yuaA ("Bacillus globigii" Migula 1900)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[KTRA_BACSU] Catalytic subunit of the KtrAB potassium uptake transporter. The 2 major potassium transporter complexes KtrAB and KtrCD confer resistance to both suddenly imposed and prolonged osmotic stress.^[1]

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

The KtrAB ion transporter is a complex of the KtrB membrane protein and KtrA, an RCK domain. RCK domains regulate eukaryotic and prokaryotic membrane proteins involved in K(+) transport. Conflicting functional models have proposed two different oligomeric arrangements for RCK domains, tetramer versus octamer. Our results for the KtrAB RCK domain clearly show an octamer in solution and in the crystal. We determined the structure of this protein in three different octameric ring conformations that resemble the RCK-domain octamer observed in the MthK potassium channel but show striking differences in size and symmetry. We present experimental evidence for the association between one RCK octameric ring and two KtrB membrane proteins. These results provide insights into the quaternary organization of the KtrAB transporter and its mechanism of activation and show that the RCK-domain octameric ring model is generally applicable to other ion-transport systems.

The RCK domain of the KtrAB K+ transporter: multiple conformations of an octameric ring.,Albright RA, Ibar JL, Kim CU, Gruner SM, Morais-Cabral JH Cell. 2006 Sep 22;126(6):1147-59. PMID:16990138^[2]

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

References

↑ Holtmann G, Bakker EP, Uozumi N, Bremer E. KtrAB and KtrCD: two K+ uptake systems in Bacillus subtilis and their role in adaptation to hypertonicity. J Bacteriol. 2003 Feb;185(4):1289-98. PMID:12562800
↑ Albright RA, Ibar JL, Kim CU, Gruner SM, Morais-Cabral JH. The RCK domain of the KtrAB K+ transporter: multiple conformations of an octameric ring. Cell. 2006 Sep 22;126(6):1147-59. PMID:16990138 doi:10.1016/j.cell.2006.08.028

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2hmu"

@@ Line 1: / Line 1: @@
 ==Diamond-shaped octameric ring structure of an RCK domain with ATP bound==
 <StructureSection load='2hmu' size='340' side='right' caption='[[2hmu]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1lsu|1lsu]], [[1lss|1lss]], [[1lnq|1lnq]], [[2hms|2hms]], [[2hmt|2hmt]], [[2hmv|2hmv]], [[2hmw|2hmw]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">yuaA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 "Bacillus globigii" Migula 1900])</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=2hmu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hmu OCA], [http://pdbe.org/2hmu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2hmu RCSB], [http://www.ebi.ac.uk/pdbsum/2hmu 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=2hmu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hmu OCA], [http://pdbe.org/2hmu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2hmu RCSB], [http://www.ebi.ac.uk/pdbsum/2hmu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2hmu ProSAT]</span></td></tr>
 </table>
 == Function ==

2hmu

From Proteopedia

Revision as of 08:14, 18 October 2017

Diamond-shaped octameric ring structure of an RCK domain with ATP bound

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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