1AUI

HUMAN CALCINEURIN HETERODIMER

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Work: 0.187 
  • R-Value Observed: 0.187 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Crystal structures of human calcineurin and the human FKBP12-FK506-calcineurin complex.

Kissinger, C.R., Parge, H.E., Knighton, D.R., Lewis, C.T., Pelletier, L.A., Tempczyk, A., Kalish, V.J., Tucker, K.D., Showalter, R.E., Moomaw, E.W., Gastinel, L.N., Habuka, N., Chen, X., Maldonado, F., Barker, J.E., Bacquet, R., Villafranca, J.E.

(1995) Nature 378: 641-644

  • DOI: 10.1038/378641a0
  • Primary Citation of Related Structures:  
    1AUI

  • PubMed Abstract: 

    • Calcineurin (CaN) is a calcium- and calmodulin-dependent protein serine/threonine phosphate which is critical for several important cellular processes, including T-cell activation. CaN is the target of the immunosuppressive drugs cyclosporin A and FK506, which inhibit CaN after forming complexes with cytoplasmic binding proteins (cyclophilin and FKBP12, respectively) ...

    Calcineurin (CaN) is a calcium- and calmodulin-dependent protein serine/threonine phosphate which is critical for several important cellular processes, including T-cell activation. CaN is the target of the immunosuppressive drugs cyclosporin A and FK506, which inhibit CaN after forming complexes with cytoplasmic binding proteins (cyclophilin and FKBP12, respectively). We report here the crystal structures of full-length human CaN at 2.1 A resolution and of the complex of human CaN with FKBP12-FK506 at 3.5 A resolution. In the native CaN structure, an auto-inhibitory element binds at the Zn/Fe-containing active site. The metal-site geometry and active-site water structure suggest a catalytic mechanism involving nucleophilic attack on the substrate phosphate by a metal-activated water molecule. In the FKBP12-FK506-CaN complex, the auto-inhibitory element is displaced from the active site. The site of binding of FKBP12-FK506 appears to be shared by other non-competitive inhibitors of calcineurin, including a natural anchoring protein.

    Organizational Affiliation: 

    Agouron Pharmaceuticals Inc., San Diego, California 92121-1121, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SERINE/THREONINE PHOSPHATASE 2BA521Homo 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
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SERINE/THREONINE PHOSPHATASE 2BB169Homo 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
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Work: 0.187 
  • R-Value Observed: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.81α = 90
b = 104.34β = 90
c = 177.77γ = 90
Software Package:
Software NamePurpose
HASSPmodel building
HEAVYmodel building
MLPHAREphasing
PHASESphasing
XTALVIEWrefinement
X-PLORrefinement
DENZOdata reduction
MOSFLMdata reduction
SCALEPACKdata scaling
CCP4data scaling
ROTAVATA)data scaling
HASSPphasing
HEAVYphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-12-03
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2012-02-29
    Changes: Database references