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: 2.10 Å
  • R-Value Work: 0.167 
  • R-Value Observed: 0.167 

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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
  • Primary Citation of Related Structures:  
    1CWA

  • 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 D Biol Crystallogr 50: 543
    • 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
    • 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
    • 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

    Organizational Affiliation

    Preclinical Research, Sandoz AG, Basel, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PEPTIDYL-PROLYL CIS-TRANS ISOMERASE AA165Homo sapiensMutation(s): 0 
Gene Names: CYCLOPHILINPPIACYPA
EC: 5.2.1.8
Find proteins for P62937 (Homo sapiens)
Explore P62937 
Go to UniProtKB:  P62937
NIH Common Fund Data Resources
PHAROS  P62937
Protein Feature View
Expand
  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CYCLOSPORIN AC11Tolypocladium inflatumMutation(s): 0 
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  5 Unique
IDChainsTypeFormula2D DiagramParent
ABA
Query on ABA
CL-PEPTIDE LINKINGC4 H9 N O2ALA
BMT
Query on BMT
CL-PEPTIDE LINKINGC10 H19 N O3THR
MLE
Query on MLE
CL-PEPTIDE LINKINGC7 H15 N O2LEU
MVA
Query on MVA
CL-PEPTIDE LINKINGC6 H13 N O2VAL
SAR
Query on SAR
CPEPTIDE LINKINGC3 H7 N O2GLY
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
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: 2.10 Å
  • R-Value Work: 0.167 
  • R-Value Observed: 0.167 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 36.395α = 90
b = 60.718β = 90
c = 72.21γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

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