1T1D Membrane Protein date Sep 22, 1998
title Crystal Structure Of The Tetramerization Domain Of The Shake Potassium Channel
authors A.Kreusch, P.J.Pfaffinger, C.F.Stevens, S.Choe
compound source
Molecule: Protein (Potassium Channel Kv1.1)
Chain: A
Fragment: Tetramerization Domain
Engineered: Yes
Organism_scientific: Aplysia Californica
Organism_common: California Sea Hare
Organism_taxid: 6500
Strain: Bl21 (De3)
Cell_line: 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 2 2
R_factor 0.229 R_Free 0.249
length a length b length c angle alpha angle beta angle gamma
59.710 59.710 146.860 90.00 90.00 90.00
method X-Ray Diffractionresolution 1.51 Å
note 1T1D is a representative structure
related structures by homologous chain: 1DSX

Primary referenceZn2+-binding and molecular determinants of tetramerization in voltage-gated K+ channels., Bixby KA, Nanao MH, Shen NV, Kreusch A, Bellamy H, Pfaffinger PJ, Choe S, Nat Struct Biol 1999 Jan;6(1):38-43. PMID:9886290
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (23 Kb) [Save to disk]
  • Biological Unit Coordinates (1t1d.pdb1.gz) 75 Kb
  • CSU: Contacts of Structural Units for 1T1D
  • Likely Quarternary Molecular Structure file(s) for 1T1D
  • Retrieve 1T1D in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1T1D from S2C, [Save to disk]
  • View 1T1D 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 1T1D
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1T1D, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1t1da_, region A [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: [1t1d] [1t1d_A]
  • SWISS-PROT database: [Q16968]
  • Domain organization of [Q16968_APLCA] by SWISSPFAM
  • Domain found in 1T1D: [BTB ] by SMART
  • Other resources with information on 1T1D
  • Community annotation for 1T1D 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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