2CTX Neurotoxin date Sep 24, 1991
title The Refined Crystal Structure Of Alpha-Cobratoxin From Naja Siamensis At 2.4-Angstroms Resolution
authors C.Betzel, G.Lange, G.P.Pal, K.S.Wilson, A.Maelicke, W.Saenger
compound source
Molecule: Alpha-Cobratoxin
Chain: A
Engineered: Yes
 Organism_scientific: Naja Naja
Organism_common: Indian Cobra
Organism_taxid: 35670
symmetry Space Group: P 65 2 2
R_factor
R_Free NULL
crystal
cell
length a length b length c angle alpha angle beta angle gamma
76.610 76.610 42.760 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.40 Å
related structures by homologous chain: 1CTX, 1NTN
Gene
Ontology
ChainFunctionProcessComponent
A
  • toxin activity


    • Primary referenceThe refined crystal structure of alpha-cobratoxin from Naja naja siamensis at 2.4-A resolution., Betzel C, Lange G, Pal GP, Wilson KS, Maelicke A, Saenger W, J Biol Chem 1991 Nov 15;266(32):21530-6. PMID:1939183
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (16 Kb) [Save to disk]
  • Biological Unit Coordinates (2ctx.pdb1.gz) 23 Kb
  • CSU: Contacts of Structural Units for 2CTX
  • Likely Quarternary Molecular Structure file(s) for 2CTX
  • Retrieve 2CTX in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2CTX from S2C, [Save to disk]
    • View 2CTX 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 2CTX
  • Ramachandran plot from PDBSum
    • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 2CTX, from MSDmotif at EBI
  • Genome occurence of 2CTX's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d2ctx__, 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: [2ctx] [2ctx_A]
  • SWISS-PROT database: [P25671]
  • Domain organization of [NXL3_NAJNA] by SWISSPFAM
    • Other resources with information on 2CTX
  • Community annotation for 2CTX 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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