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
  • Structures With Same Primary Citation

  • 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 UniProtKB:  Q08209
NIH Common Fund Data Resources
PHAROS  Q08209
GTEx  ENSG00000138814
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE PHOSPHATASE 2B
B
169Homo sapiensMutation(s): 0 
Gene Names: PPP3R1, CNA2, CNB
EC: 3.1.3.16
Find proteins for P63098 (Homo sapiens)
Go to UniProtKB:  P63098
NIH Common Fund Data Resources
PHAROS  P63098
GTEx  ENSG00000221823
Protein Feature View
  • 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


View more in-depth experimental data

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