1JQ1 Membrane Protein date Aug 03, 2001
title Potassium Channel (Kcsa) Open Gate Model
authors Y.S.Liu, P.Sompornpisut, E.Perozo
compound source
Molecule: Voltage-Gated Potassium Channel
Chain: A, B, C, D
Fragment: Inner Transmembrane Segment (Residues 86-119)
Engineered: Yes
Organism_scientific: Streptomyces Lividans
Organism_taxid: 1916
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Xl-2 Blue
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pqe32
methodSolution NMR
related structures by homologous chain: 1F6G, 1JQ2
Primary referenceStructure of the KcsA channel intracellular gate in the open state., Liu YS, Sompornpisut P, Perozo E, Nat Struct Biol 2001 Oct;8(10):883-7. PMID:11573095
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (5 Kb) [Save to disk]
  • Biological Unit Coordinates (1jq1.pdb1.gz) 3 Kb
  • CSU: Contacts of Structural Units for 1JQ1
  • Retrieve 1JQ1 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1JQ1 from S2C, [Save to disk]
  • View 1JQ1 in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1JQ1
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1JQ1, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1jq1a_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1jq1b_, region B [Jmol] [rasmolscript] [script source]
        - Domain d1jq1c_, region C [Jmol] [rasmolscript] [script source]
        - Domain d1jq1d_, region D [Jmol] [rasmolscript] [script source]
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1jq1_A] [1jq1_D] [1jq1] [1jq1_C] [1jq1_B]
  • SWISS-PROT database: [P0A334]
  • Belongs to the voltage-gated ion channel (vic) superfamily according to TCDB.
  • Domain organization of [KCSA_STRLI] by SWISSPFAM
  • Other resources with information on 1JQ1
  • Community annotation for 1JQ1 at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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