1MF8

Crystal Structure of human calcineurin complexed with cyclosporin A and human cyclophilin

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.250 

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This is version 1.4 of the entry. See complete history. 


Literature

Crystal Structure of Human Calcineurin Complexed with Cyclosporin a and Human Cyclophilin

Jin, L., Harrison, S.C.

(2002) Proc Natl Acad Sci U S A 99: 13522

  • DOI: 10.1073/pnas.212504399
  • Primary Citation of Related Structures:  
    1MF8

  • PubMed Abstract: 

    • Calcineurin (Cn), a Ca(2+)/calmodulin-dependent Ser/Thr protein phosphatase, is an important participant in signaling pathways that activate T cells. It is the target of the immunosuppressive drugs cyclosporin A (CsA) and FK506. These drugs bind proteins known as cyclophilin (Cyp) and FK506-binding protein, respectively, and the drug-protein complexes in turn inhibit Cn ...

    Calcineurin (Cn), a Ca(2+)/calmodulin-dependent Ser/Thr protein phosphatase, is an important participant in signaling pathways that activate T cells. It is the target of the immunosuppressive drugs cyclosporin A (CsA) and FK506. These drugs bind proteins known as cyclophilin (Cyp) and FK506-binding protein, respectively, and the drug-protein complexes in turn inhibit Cn. We report the crystal structure of a Cyp/CsA/Cn ternary complex, determined to a resolution of 3.1 A. Residues 3-9 of CsA, particularly N-methyl leucines 4 and 6, and Trp-121 of Cyp form a composite surface for interaction with Cn. The hydrophobic interface buries two hydrogen bonds. The structure accounts clearly for the effects of mutations in Cn on CsA-resistance and for the way modifications of CsA alter immunosuppressive activity.

    Organizational Affiliation: 

    Department of Molecular and Cellular Biology, and Howard Hughes Medical Institute, Harvard University, 7 Divinity Avenue, Cambridge, MA 02138, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CALMODULIN-DEPENDENT CALCINEURIN A SUBUNIT, ALPHA ISOFORMA373Homo sapiensMutation(s): 0 
Gene Names: PPP3CA, CALNA, CNA
EC: 3.1.3.16
UniProt & NIH Common Fund Data Resources
Find proteins for Q08209 (Homo sapiens)
Explore Q08209 
Go to UniProtKB:  Q08209
PHAROS:  Q08209
GTEx:  ENSG00000138814
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CALCINEURIN B SUBUNIT ISOFORM 1B170Homo sapiensMutation(s): 0 
Gene Names: PPP3R1, CNA2, CNB
EC: 3.1.3.16
UniProt & NIH Common Fund Data Resources
Find proteins for P63098 (Homo sapiens)
Explore P63098 
Go to UniProtKB:  P63098
PHAROS:  P63098
GTEx:  ENSG00000221823
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PEPTIDYL-PROLYL CIS-TRANS ISOMERASE AC165Homo sapiensMutation(s): 0 
Gene Names: PPIA, CYPA
EC: 5.2.1.8
UniProt & NIH Common Fund Data Resources
Find proteins for P62937 (Homo sapiens)
Explore P62937 
Go to UniProtKB:  P62937
PHAROS:  P62937
GTEx:  ENSG00000196262
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
CYCLOSPORIN AD11Tolypocladium inflatumMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  5 Unique
IDChainsTypeFormula2D DiagramParent
ABA
Query on ABA		DL-PEPTIDE LINKINGC4 H9 N O2ALA
BMT
Query on BMT		DL-PEPTIDE LINKINGC10 H19 N O3THR
MLE
Query on MLE		DL-PEPTIDE LINKINGC7 H15 N O2LEU
MVA
Query on MVA		DL-PEPTIDE LINKINGC6 H13 N O2VAL
SAR
Query on SAR		DPEPTIDE LINKINGC3 H7 N O2GLY
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 4
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000142
Query on PRD_000142		DCyclosporin ACyclic peptide /  Immunosuppressant

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.250 
  • R-Value Observed: 0.250 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.949α = 90
b = 108.334β = 90
c = 112.841γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-10-16
    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