2CHB Toxin date Jun 03, 1997
title Cholera Toxin B-Pentamer Complexed With Gm1 Pentasaccharide
authors E.A.Merritt, W.G.J.Hol
compound source
Molecule: Cholera Toxin
Chain: D, E, F, G, H
Fragment: B-Pentamer
Engineered: Yes
Other_details: Receptor Binding Site On Each Monomer Occupi Pentasaccharide
 Organism_scientific: Vibrio Cholerae
Organism_taxid: 666
Strain: Ogawa 41 (Classical Biotype)
Expression_system: Escherichia Coli
Expression_system_taxid: 562
symmetry Space Group: C 1 2 1
R_factor 0.171 R_Free NULL
crystal
cell
length a length b length c angle alpha angle beta angle gamma
101.900 67.580 80.470 90.00 105.69 90.00
method X-Ray Diffractionresolution 2.00 Å
ligand BGC, GAL, NGA, SIA enzyme
note 2CHB supersedes 1CHB
related structures by homologous chain: 1CHP, 1PZI
Gene
Ontology
ChainFunctionProcessComponent
H, F, D, G, E
  • host cell surface binding
  • toxin activity


    • Primary referenceStructural studies of receptor binding by cholera toxin mutants., Merritt EA, Sarfaty S, Jobling MG, Chang T, Holmes RK, Hirst TR, Hol WG, Protein Sci 1997 Jul;6(7):1516-28. PMID:9232653
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (101 Kb) [Save to disk]
  • Biological Unit Coordinates (2chb.pdb1.gz) 95 Kb
  • LPC: Ligand-Protein Contacts for 2CHB
  • CSU: Contacts of Structural Units for 2CHB
  • Likely Quarternary Molecular Structure file(s) for 2CHB
  • Structure Factors (394 Kb)
  • Retrieve 2CHB in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2CHB from S2C, [Save to disk]
  • Re-refined 2chb structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
    • View 2CHB 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 2CHB
  • Ramachandran plot from PDBSum
    • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 2CHB, from MSDmotif at EBI
  • Genome occurence of 2CHB's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d2chbd_, region D [Jmol] [rasmolscript] [script source]
        - Domain d2chbe_, region E [Jmol] [rasmolscript] [script source]
        - Domain d2chbf_, region F [Jmol] [rasmolscript] [script source]
        - Domain d2chbg_, region G [Jmol] [rasmolscript] [script source]
        - Domain d2chbh_, region H [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: [2chb_G] [2chb_H] [2chb_D] [2chb_F] [2chb] [2chb_E]
  • SWISS-PROT database: [P01556]
  • Domain organization of [CHTB_VIBCH] by SWISSPFAM
    • Other resources with information on 2CHB
  • Community annotation for 2CHB at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
    • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

    • You may enter another PDB ID code
    Go [Back], to the [PDB Lite page], to the [OCA Search page] or to the [PDB Home page]
    OCA© by Jaime Prilusky, 1996-2014,2022
    Bioinformatics Unit
    Weizmann Institute of Science