1ZTN

INACTIVATION GATE OF POTASSIUM CHANNEL RAW3, NMR, 8 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 105 
  • Conformers Submitted: 
  • Selection Criteria: TO BE GIVEN 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

NMR structure of inactivation gates from mammalian voltage-dependent potassium channels.

Antz, C.Geyer, M.Fakler, B.Schott, M.K.Guy, H.R.Frank, R.Ruppersberg, J.P.Kalbitzer, H.R.

(1997) Nature 385: 272-275

  • DOI: 10.1038/385272a0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The electrical signalling properties of neurons originate largely from the gating properties of their ion channels. N-type inactivation of voltage-gated potassium (Kv) channels is the best-understood gating transition in ion channels, and occurs by a ...

    The electrical signalling properties of neurons originate largely from the gating properties of their ion channels. N-type inactivation of voltage-gated potassium (Kv) channels is the best-understood gating transition in ion channels, and occurs by a 'ball-and-chain' type mechanism. In this mechanism an N-terminal domain (inactivation gate), which is tethered to the cytoplasmic side of the channel protein by a protease-cleavable chain, binds to its receptor at the inner vestibule of the channel, thereby physically blocking the pore. Even when synthesized as a peptide, ball domains restore inactivation in Kv channels whose inactivation domains have been deleted. Using high-resolution nuclear magnetic resonance (NMR) spectroscopy, we analysed the three-dimensional structure of the ball peptides from two rapidly inactivating mammalian K. channels (Raw3 (Kv3.4) and RCK4 (Kv1.4)). The inactivation peptide of Raw3 (Raw3-IP) has a compact structure that exposes two phosphorylation sites and allows the formation of an intramolecular disulphide bridge between two spatially close cysteine residues. Raw3-IP exhibits a characteristic surface charge pattern with a positively charged, a hydrophobic, and a negatively charged region. The RCK4 inactivation peptide (RCK4-IP) shows a similar spatial distribution of charged and uncharged regions, but is more flexible and less ordered in its amino-terminal part.


    Organizational Affiliation

    Institute of Physiology, University of Tubingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Potassium voltage-gated channel subfamily C member 4
A
30Homo sapiensMutation(s): 0 
Gene Names: KCNC4 (C1orf30)
Find proteins for Q03721 (Homo sapiens)
Go to Gene View: KCNC4
Go to UniProtKB:  Q03721
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 105 
  • Conformers Submitted: 
  • Selection Criteria: TO BE GIVEN 
  • Olderado: 1ZTN Olderado
Software Package:
Software NamePurpose
XWINNMRrefinement
X-PLORrefinement
XWINNMRphasing
XWINNMRmodel building
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-06-05
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2016-02-10
    Type: Database references