1A68 Potassium Channels date Mar 06, 1998
title Crystal Structure Of The Tetramerization Domain Of The Shaker Potassium Channel
authors A.Kreusch, P.J.Pfaffinger, C.F.Stevens, S.Choe
compound source
Molecule: Potassium Channel Kv1.1
Chain: A
Fragment: Tetramerization Domain
Engineered: Yes
Mutation: Yes
Organism_scientific: Aplysia Californica
Organism_common: California Sea Hare
Organism_taxid: 6500
Cell_line: Bl21
Tissue: Central Nervous System
Cellular_location: Cytoplasm
Expression_system: Escherichia Coli Bl21(De3)
Expression_system_taxid: 469008
Expression_system_strain: Bl21 (De3)
Expression_system_cellular_location: Cytoplasm
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet20b
symmetry Space Group: I 4
R_factor 0.200 R_Free 0.241
length a length b length c angle alpha angle beta angle gamma
51.034 51.034 65.605 90.00 90.00 90.00
method X-Ray Diffractionresolution 1.80 Å
related structures by homologous chain: 1EOE, 1EXB

Primary referenceCrystal structure of the tetramerization domain of the Shaker potassium channel., Kreusch A, Pfaffinger PJ, Stevens CF, Choe S, Nature 1998 Apr 30;392(6679):945-8. PMID:9582078
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (19 Kb) [Save to disk]
  • Biological Unit Coordinates (1a68.pdb1.gz) 62 Kb
  • CSU: Contacts of Structural Units for 1A68
  • Likely Quarternary Molecular Structure file(s) for 1A68
  • Retrieve 1A68 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1A68 from S2C, [Save to disk]
  • View 1A68 in 3D
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  • Visual 3D analysis of 1A68
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1A68, from MSDmotif at EBI
  • Genome occurence of 1A68's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1a68__, region [Jmol] [rasmolscript] [script source]
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1a68] [1a68_A]
  • SWISS-PROT database: [Q16968]
  • Domain organization of [Q16968_APLCA] by SWISSPFAM
  • Domain found in 1A68: [BTB ] by SMART
  • Other resources with information on 1A68
  • Community annotation for 1A68 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
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