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 FK ...

    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: PPP3CACALNACNA
EC: 3.1.3.16
Find proteins for Q08209 (Homo sapiens)
Explore Q08209 
Go to UniProtKB:  Q08209
NIH Common Fund Data Resources
PHAROS  Q08209
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: PPP3R1CNA2CNB
EC: 3.1.3.16
Find proteins for P63098 (Homo sapiens)
Explore P63098 
Go to UniProtKB:  P63098
NIH Common Fund Data Resources
PHAROS  P63098
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
FE
Query on FE

Download CCD File 
A
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download CCD File 
B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
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

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • 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