2A9H Metal Transport, Membrane Protein date Jul 11, 2005
title Nmr Structural Studies Of A Potassium Channel Charybdotoxi
authors L.Yu, C.Sun, D.Song, J.Shen, N.Xu, A.Gunasekera, P.J.Hajduk, E.T.Ol
compound source
Molecule: Voltage-Gated Potassium Channel
Chain: A, B, C, D
Engineered: Yes
Mutation: Yes
 Organism_scientific: Streptomyces Lividans
Organism_taxid: 1916
Gene: Kcsa, Skc1
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: C41 (De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pivex-D2.4d

Molecule: Charybdotoxin
Chain: E
Engineered: Yes
Synthetic: Yes
methodSolution NMR
ligand PCA enzyme
note 2A9H is a representative structure
Gene
Ontology
ChainFunctionProcessComponent
A, D, C, B


E
  • toxin activity


    • Primary referenceNuclear magnetic resonance structural studies of a potassium channel-charybdotoxin complex., Yu L, Sun C, Song D, Shen J, Xu N, Gunasekera A, Hajduk PJ, Olejniczak ET, Biochemistry. 2005 Dec 6;44(48):15834-41. PMID:16313186
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (116 Kb) [Save to disk]
  • Biological Unit Coordinates (2a9h.pdb1.gz) 109 Kb
  • LPC: Ligand-Protein Contacts for 2A9H
  • CSU: Contacts of Structural Units for 2A9H
  • Retrieve 2A9H in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2A9H from S2C, [Save to disk]
    • View 2A9H 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 2A9H
  • Ramachandran plot from PDBSum
    • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 2A9H, from MSDmotif at EBI
    • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2a9h_E] [2a9h] [2a9h_D] [2a9h_A] [2a9h_B] [2a9h_C]
  • 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 2A9H
  • Community annotation for 2A9H 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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