1EXB

STRUCTURE OF THE CYTOPLASMIC BETA SUBUNIT-T1 ASSEMBLY OF VOLTAGE-DEPENDENT K CHANNELS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the cytoplasmic beta subunit-T1 assembly of voltage-dependent K+ channels.

Gulbis, J.M.Zhou, M.Mann, S.MacKinnon, R.

(2000) Science 289: 123-127

  • Also Cited By: 3EB3, 3EB4, 3EAU

  • PubMed Abstract: 
  • The structure of the cytoplasmic assembly of voltage-dependent K+ channels was solved by x-ray crystallography at 2.1 angstrom resolution. The assembly includes the cytoplasmic (T1) domain of the integral membrane alpha subunit together with the oxid ...

    The structure of the cytoplasmic assembly of voltage-dependent K+ channels was solved by x-ray crystallography at 2.1 angstrom resolution. The assembly includes the cytoplasmic (T1) domain of the integral membrane alpha subunit together with the oxidoreductase beta subunit in a fourfold symmetric T1(4)beta4 complex. An electrophysiological assay showed that this complex is oriented with four T1 domains facing the transmembrane pore and four beta subunits facing the cytoplasm. The transmembrane pore communicates with the cytoplasm through lateral, negatively charged openings above the T1(4)beta4 complex. The inactivation peptides of voltage-dependent K(+) channels reach their site of action by entering these openings.


    Organizational Affiliation

    Howard Hughes Medical Institute and Laboratory of Molecular Neurobiology and Biophysics, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KV BETA2 PROTEIN
A
332Rattus norvegicusMutation(s): 0 
Gene Names: Kcnab2 (Ckbeta2, Kcnb3)
EC: 1.1.1.-
Find proteins for P62483 (Rattus norvegicus)
Go to UniProtKB:  P62483
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
POTASSIUM CHANNEL KV1.1
E
103Rattus norvegicusMutation(s): 0 
Gene Names: Kcna1
Find proteins for P10499 (Rattus norvegicus)
Go to UniProtKB:  P10499
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NDP
Query on NDP

Download SDF File 
Download CCD File 
A
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H30 N7 O17 P3
ACFIXJIJDZMPPO-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.215 
  • Space Group: P 4 21 2
Unit Cell:
Length (Å)Angle (°)
a = 100.725α = 90.00
b = 100.725β = 90.00
c = 110.901γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-07-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance