1MIM

IGG FAB FRAGMENT (CD25-BINDING)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the fab fragment of SDZ CHI621: a chimeric antibody against CD25.

Mikol, V.

(1996) Acta Crystallogr.,Sect.D 52: 534-542

  • DOI: 10.1107/S0907444996000704

  • PubMed Abstract: 
  • A specific drug targeted to the IL-2 receptor on activated T lymphocytes could limit acute immunological rejection during organ transplantation. A high-affinity monoclonal antibody directed against the alpha-chain of the IL-2 receptor (CD25) was chim ...

    A specific drug targeted to the IL-2 receptor on activated T lymphocytes could limit acute immunological rejection during organ transplantation. A high-affinity monoclonal antibody directed against the alpha-chain of the IL-2 receptor (CD25) was chimerized with the constant regions of the human IgG1 heavy and k light chain resulting in SDZ CHII621 [Amlot, Rawlings, Fernando, Griffin, Heinrich, Schreier, Castaigne, Moore & Sweny (1995). Transplantation, 60, 748-756]. The Fab fragment of SDZ CHI621 has been purified and crystallized (P2(l), a = 39.58, b = 59.76, c = 102.09 A, beta = 99.98 degrees ). Its structure has been determined by molecular replacement and refined at 2.6 A to a crystallographic R factor of 19.7%. The protein exhibits the typical immunoglobulin fold. The complementary determining regions (CDR's) 1 and 2 of both heavy and light chains show similar conformations to other known reported structures whereas the CDR3 from the light chain seems to adopt a novel type of conformation. There is a network of interactions which maintain the CDR3 of both chains together and limit their solvent accessibility. The interaction between V(L) and C(L) has been strengthened by the chimerization whereas that between V(H) and C(H)1 has been weakened.


    Related Citations: 
    • Prolonged Action of a Chimeric Interleukin-2 Receptor (Cd25) Monoclonal Antibody Used in Cadaveric Renal Transplantation
      Amlot, P.L.,Rawlings, E.,Fernando, O.N.,Griffin, P.J.,Heinrich, G.,Schreier, M.H.,Castaigne, J.P.,Moore, R.,Sweny, P.
      (1995) Transplantation 60: 748


    Organizational Affiliation

    Preclinical Research, Sandoz Pharma AG, Basel, Switzerland. mikol@rp.fr




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHIMERIC SDZ CHI621
L
210Homo sapiensGene Names: IGKC
Find proteins for P01834 (Homo sapiens)
Go to UniProtKB:  P01834
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CHIMERIC SDZ CHI621
H
215N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.196 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 39.580α = 90.00
b = 59.760β = 99.98
c = 102.090γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1995-12-04 
  • Released Date: 1997-05-15 
  • Deposition Author(s): Mikol, V.

Revision History 

  • Version 1.0: 1997-05-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance