3lut

From Proteopedia

(Difference between revisions)

Revision as of 17:45, 25 December 2014

A Structural Model for the Full-length Shaker Potassium Channel Kv1.2

Structural highlights

3lut is a 2 chain structure with sequence from Rattus norvegicus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	2a79, 2r9r
Gene:	Kcnab2, Ckbeta2, Kcnb3 (Rattus norvegicus), Kcna2 (Rattus norvegicus)
Resources:	FirstGlance, OCA, RCSB, PDBsum

Function

[KCAB2_RAT] Accessory potassium channel protein which modulates the activity of the pore-forming alpha subunit. [KCNA2_RAT] Mediates the voltage-dependent potassium ion permeability of excitable membranes. Assuming opened or closed conformations in response to the voltage difference across the membrane, the protein forms a potassium-selective channel through which potassium ions may pass in accordance with their electrochemical gradient.^[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

Voltage-dependent potassium ion (K+) channels (Kv channels) conduct K+ ions across the cell membrane in response to changes in the membrane voltage, thereby regulating neuronal excitability by modulating the shape and frequency of action potentials. Here we report the crystal structure, at a resolution of 2.9 angstroms, of a mammalian Kv channel, Kv1.2, which is a member of the Shaker K+ channel family. This structure is in complex with an oxido-reductase beta subunit of the kind that can regulate mammalian Kv channels in their native cell environment. The activation gate of the pore is open. Large side portals communicate between the pore and the cytoplasm. Electrostatic properties of the side portals and positions of the T1 domain and beta subunit are consistent with electrophysiological studies of inactivation gating and with the possibility of K+ channel regulation by the beta subunit.

Crystal structure of a mammalian voltage-dependent Shaker family K+ channel.,Long SB, Campbell EB, Mackinnon R Science. 2005 Aug 5;309(5736):897-903. Epub 2005 Jul 7. PMID:16002581^[2]

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

References

↑ Lev S, Moreno H, Martinez R, Canoll P, Peles E, Musacchio JM, Plowman GD, Rudy B, Schlessinger J. Protein tyrosine kinase PYK2 involved in Ca(2+)-induced regulation of ion channel and MAP kinase functions. Nature. 1995 Aug 31;376(6543):737-45. PMID:7544443 doi:http://dx.doi.org/10.1038/376737a0
↑ Long SB, Campbell EB, Mackinnon R. Crystal structure of a mammalian voltage-dependent Shaker family K+ channel. Science. 2005 Aug 5;309(5736):897-903. Epub 2005 Jul 7. PMID:16002581

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/3lut"

@@ Line 8: / Line 8: @@
 <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=3lut FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3lut OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3lut RCSB], [http://www.ebi.ac.uk/pdbsum/3lut PDBsum]</span></td></tr>
 </table>
+== Function ==
+[[http://www.uniprot.org/uniprot/KCAB2_RAT KCAB2_RAT]] Accessory potassium channel protein which modulates the activity of the pore-forming alpha subunit. [[http://www.uniprot.org/uniprot/KCNA2_RAT KCNA2_RAT]] Mediates the voltage-dependent potassium ion permeability of excitable membranes. Assuming opened or closed conformations in response to the voltage difference across the membrane, the protein forms a potassium-selective channel through which potassium ions may pass in accordance with their electrochemical gradient.<ref>PMID:7544443</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]

3lut

From Proteopedia

Revision as of 17:45, 25 December 2014

A Structural Model for the Full-length Shaker Potassium Channel Kv1.2

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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