4IDL

Low melting temperature Anti-Cholera Toxin Llama VHH domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of a low-melting-temperature anti-cholera toxin: llama V(H)H domain.

Legler, P.M.Zabetakis, D.Anderson, G.P.Lam, A.Hol, W.G.Goldman, E.R.

(2013) Acta Crystallogr.,Sect.F 69: 90-93

  • DOI: 10.1107/S1744309112050750

  • PubMed Abstract: 
  • Variable heavy domains derived from the heavy-chain-only antibodies found in camelids (V(H)H domains) are known for their thermal stability. Here, the structure of A9, an anti-cholera toxin V(H)H domain (K(d) = 77 ± 5 nM) that has an unusually low me ...

    Variable heavy domains derived from the heavy-chain-only antibodies found in camelids (V(H)H domains) are known for their thermal stability. Here, the structure of A9, an anti-cholera toxin V(H)H domain (K(d) = 77 ± 5 nM) that has an unusually low melting temperature of 319.9 ± 1.6 K, is reported. The CDR3 residues of A9 form a β-hairpin that is directed away from the former V(H)-V(L) interfacial surface, exposing hydrophobic residues to the solvent. A DALI structural similarity search showed that this CDR3 conformation is uncommon.


    Organizational Affiliation

    Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, DC 20375, USA. patricia.legler@nrl.navy.mil




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Single Domain Antibody VHH A9
A
136N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.206 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 56.444α = 90.00
b = 51.863β = 107.81
c = 46.481γ = 90.00
Software Package:
Software NamePurpose
CrystalCleardata collection
SCALEPACKdata scaling
HKL-2000data reduction
REFMACrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-13
    Type: Initial release
  • Version 1.1: 2013-02-20
    Type: Database references