1CWA

X-RAY STRUCTURE OF A MONOMERIC CYCLOPHILIN A-CYCLOSPORIN A CRYSTAL COMPLEX AT 2.1 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

X-Ray Structure of a Monomeric Cyclophilin A-Cyclosporin a Crystal Complex at 2.1 A Resolution.

Mikol, V.Kallen, J.Pflugl, G.Walkinshaw, M.D.

(1993) J.Mol.Biol. 234: 1119

  • DOI: 10.1006/jmbi.1993.1664
  • Also Cited By: 1CYN, 1MIK, 1DYW, 1CWC, 1CWB

  • PubMed Abstract: 
  • The crystal structure of a complex between recombinant human cyclophilin A (Cyp) and cyclosporin A (CsA) has been determined from a novel orthorhombic crystal form that contains only one monomer of complex per asymmetric unit rather than five in the ...

    The crystal structure of a complex between recombinant human cyclophilin A (Cyp) and cyclosporin A (CsA) has been determined from a novel orthorhombic crystal form that contains only one monomer of complex per asymmetric unit rather than five in the previously determined tetragonal structure. The structure has been refined at 2.1 A resolution to a crystallographic R-factor of 16.7%. The conformation of Cyp is practically unchanged with respect to the tetragonal form. A certain number of previously undefined side-chains have been located in the electron density and a very detailed picture of the ordered solvent structure has been obtained. The interactions between CsA and Cyp are conserved. A network of the possibly conserved, water-mediated contacts is described. The structure of CsA in the monomeric complex is similar to that of the decameric complex, but shows a few small differences in the so-called effector domain of CsA, probably due to differences in crystal environment. The fact that this monomeric crystal form can be obtained shows that the formation of pentamer or decamer complexes is not a generally observed phenomenon and is not a prerequisite for biological activity.


    Related Citations: 
    • Crystallization of the Complex between Cyclophilin a and Cyclosporin Derivatives: The Use of Cross- Seeding.
      Mikol, V.,Duc, D.
      (1994) Acta Crystallogr.,Sect.D 50: 543
    • X-Ray Structure of a Decameric Cyclophilin- Cyclosporin Crystal Complex.
      Pflugl, G.,Kallen, J.,Schirmer, T.,Jansonius, J.N.,Zurini, M.G.,Walkinshaw, M.D.
      (1993) Nature 361: 91
    • Improved Binding Affinity for Cyclophilin a by a Cyclosporin Derivative Singly Modified at its Effector Domain.
      Papageorgiou, C.,Florineth, A.,Mikol, V.
      (1994) J.Med.Chem. 37: 3674
    • The X-Ray Structure of (Mebm2T)1-Cyclosporin Complexed with Cyclophilin a Provides an Explanation for its Anomalously High Immunosuppressive Activity.
      Mikol, V.,Kallen, J.,Walkinshaw, M.D.
      (1994) Protein Eng. 7: 597


    Organizational Affiliation

    Preclinical Research, Sandoz AG, Basel, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PEPTIDYL-PROLYL CIS-TRANS ISOMERASE A
A
165Homo sapiensMutation(s): 0 
Gene Names: PPIA (CYPA)
EC: 5.2.1.8
Find proteins for P62937 (Homo sapiens)
Go to Gene View: PPIA
Go to UniProtKB:  P62937
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CYCLOSPORIN A
C
11N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000142
Query on PRD_000142
CCyclosporin ACyclic peptide / Immunosuppressant

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.167 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 36.395α = 90.00
b = 60.718β = 90.00
c = 72.210γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-01-29
    Type: Initial release
  • Version 1.1: 2011-06-14
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-07-27
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary
  • Version 1.4: 2012-12-12
    Type: Other