2ZPK

Crystal structure of P20.1 Fab fragment in complex with its antigen peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

Novel affinity tag system using structurally defined antibody-tag interaction: application to single-step protein purification

Nogi, T., Sangawa, T., Tabata, S., Nagae, M., Tamura-Kawakami, K., Beppu, A., Hattori, M., Yasui, N., Takagi, J.

(2008) Protein Sci. 17: 2120-2126

  • DOI: 10.1110/ps.038299.108

  • PubMed Abstract: 

    • Biologically important human proteins often require mammalian cell expression for structural studies, presenting technical and economical problems in the production/purification processes. We introduce a novel affinity peptide tagging system that use ...

    Biologically important human proteins often require mammalian cell expression for structural studies, presenting technical and economical problems in the production/purification processes. We introduce a novel affinity peptide tagging system that uses a low affinity anti-peptide monoclonal antibody. Concatenation of the short recognition sequence enabled the successful engineering of an 18-residue affinity tag with ideal solution binding kinetics, providing a low-cost purification means when combined with nondenaturing elution by water-miscible organic solvents. Three-dimensional information provides a firm structural basis for the antibody-peptide interaction, opening opportunities for further improvements/modifications.

    Organizational Affiliation: 

    Laboratory of Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
IgG1-lambda P20.1 Fab (light chain)
L, M
212N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
IgG1-lambda P20.1 Fab (heavy chain)
H, I
216N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Proteinase-activated receptor 4
P, Q
8Homo sapiensMutation(s): 0 
Gene Names: F2RL3 (PAR4)
Find proteins for Q96RI0 (Homo sapiens)
Go to Gene View: F2RL3
Go to UniProtKB:  Q96RI0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL
Download SDF File 
Download CCD File 
H, I, M
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
H, I, L, M
L-PEPTIDE LINKINGC5 H7 N O3GLU
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.172 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 40.045α = 99.93
b = 65.271β = 93.50
c = 85.030γ = 96.46
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
MOLREPphasing
HKL-2000data scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance