› 1id1

X-ray diffraction
2.4Å resolution

CRYSTAL STRUCTURE OF THE RCK DOMAIN FROM E.COLI POTASSIUM CHANNEL

Released:
DOI: 10.2210/pdb1id1/pdb
PDB entry 1id1 coloured by chain, front view.
PDB entry 1id1 coloured by chain, side view.
PDB entry 1id1 coloured by chain, top view.
Source organism: Escherichia coli
Primary publication:
Structure of the RCK domain from the E. coli K+ channel and demonstration of its presence in the human BK channel.
Jiang Y, Pico A, Cadene M, Chait BT, MacKinnon R
Neuron 29 593-601 (2001)
PMID: 11301020

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
Cellular component:
  • not assigned
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-151902 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Voltage-gated potassium channel Kch Chains: A, B
Molecule details ›
Chains: A, B
Length: 153 amino acids
Theoretical weight: 16.75 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P31069 (Residues: 241-393; Coverage: 37%)
Gene names: JW1242, b1250, kch
Sequence domains: TrkA-N domain
Structure domains: NAD(P)-binding Rossmann-like Domain

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X25
Spacegroup: P41
Unit cell:
a: 65.51Å b: 65.51Å c: 110.24Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.208 0.208 0.236
Expression system: Escherichia coli BL21(DE3)

Quick links

Citations

46 review citations

The voltage-gated potassium channels and their relatives.
Yellen G. (2002)
45 more

9 mentions without citation

Structure of potassium channels.
Kuang et al. (2015)
8 more