1N4X

Structure of scFv 1696 at acidic pH


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of a single-chain Fv fragment of an antibody that inhibits the HIV-1 and HIV-2 proteases.

Lescar, J.Brynda, J.Fabry, M.Horejsi, M.Rezacova, P.Sedlacek, J.Bentley, G.A.

(2003) Acta Crystallogr.,Sect.D 59: 955-957


  • PubMed Abstract: 
  • The monoclonal antibody 1696, which was raised against the HIV-1 protease, inhibits the catalytic activity of the enzyme from both the HIV-1 and HIV-2 strains. The antibody cross-reacts with peptides containing the N-terminus of the enzyme, which is ...

    The monoclonal antibody 1696, which was raised against the HIV-1 protease, inhibits the catalytic activity of the enzyme from both the HIV-1 and HIV-2 strains. The antibody cross-reacts with peptides containing the N-terminus of the enzyme, which is highly conserved between these strains. The crystal structure of a single-chain Fv fragment of 1696 (scFv-1696) in the non-complexed form, solved at 1.7 A resolution, is compared with the previously reported non-complexed Fab-1696 and antigen-bound scFv-1696 structures. Large conformational changes in the third hypervariable region of the heavy chain and differences in relative orientation of the variable domains are observed between the different structures.


    Organizational Affiliation

    European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
immunoglobulin kappa chain variable region
L, M
113Mus musculusN/A
Find proteins for P01631 (Mus musculus)
Go to UniProtKB:  P01631
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
immunoglobulin heavy chain variable region
H, I
120Mus musculusN/A
Find proteins for Q921A6 (Mus musculus)
Go to UniProtKB:  Q921A6
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
H, I
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.227 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 126.930α = 90.00
b = 61.210β = 90.00
c = 57.300γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
AMoREphasing
XDSdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-06-10
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Advisory, Refinement description