1AUI

HUMAN CALCINEURIN HETERODIMER


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 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
  • Also Cited By: 3LL8

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE PHOSPHATASE 2B
A
521Homo sapiensMutation(s): 0 
Gene Names: PPP3CA (CALNA, CNA)
EC: 3.1.3.16
Find proteins for Q08209 (Homo sapiens)
Go to Gene View: PPP3CA
Go to UniProtKB:  Q08209
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE PHOSPHATASE 2B
B
169Homo sapiensMutation(s): 0 
Gene Names: PPP3R1 (CNA2, CNB)
Find proteins for P63098 (Homo sapiens)
Go to Gene View: PPP3R1
Go to UniProtKB:  P63098
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Download SDF File 
Download CCD File 
B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
FE
Query on FE

Download SDF File 
Download CCD File 
A
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Work: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 48.810α = 90.00
b = 104.340β = 90.00
c = 177.770γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
X-PLORrefinement
ROTAVATA)data scaling
DENZOdata reduction
MOSFLMdata reduction
HASSPphasing
XTALVIEWrefinement
CCP4data scaling
HASSPmodel building
HEAVYphasing
SCALEPACKdata scaling
PHASESphasing
HEAVYmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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