1TCO

TERNARY COMPLEX OF A CALCINEURIN A FRAGMENT, CALCINEURIN B, FKBP12 AND THE IMMUNOSUPPRESSANT DRUG FK506 (TACROLIMUS)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

X-ray structure of calcineurin inhibited by the immunophilin-immunosuppressant FKBP12-FK506 complex.

Griffith, J.P.Kim, J.L.Kim, E.E.Sintchak, M.D.Thomson, J.A.Fitzgibbon, M.J.Fleming, M.A.Caron, P.R.Hsiao, K.Navia, M.A.

(1995) Cell 82: 507-522


  • PubMed Abstract: 
  • The X-ray structure of the ternary complex of a calcineurin A fragment, calcineurin B, FKBP12, and the immunosuppressant drug FK506 (also known as tacrolimus) has been determined at 2.5 A resolution, providing a description of how FK506 functions at ...

    The X-ray structure of the ternary complex of a calcineurin A fragment, calcineurin B, FKBP12, and the immunosuppressant drug FK506 (also known as tacrolimus) has been determined at 2.5 A resolution, providing a description of how FK506 functions at the atomic level. In the structure, the FKBP12-FK506 binary complex does not contact the phosphatase active site on calcineurin A that is more than 10 A removed. Instead, FKBP12-FK506 is so positioned that it can inhibit the dephosphorylation of its macromolecular substrates by physically hindering their approach to the active site. The ternary complex described here represents the three-dimensional structure of a Ser/Thr protein phosphatase and provides a structural basis for understanding calcineurin inhibition by FKBP12-FK506.


    Organizational Affiliation

    Vertex Pharmaceuticals, Incorporated, Cambridge, Massachusetts 02139-4211, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE PHOSPHATASE B2
A
375Bos taurusMutation(s): 0 
Gene Names: PPP3CA
EC: 3.1.3.16
Find proteins for P48452 (Bos taurus)
Go to Gene View: PPP3CA
Go to UniProtKB:  P48452
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE PHOSPHATASE B2
B
169Bos taurusMutation(s): 0 
Gene Names: PPP3R1 (CNA2, CNB)
Find proteins for P63099 (Bos taurus)
Go to Gene View: PPP3R1
Go to UniProtKB:  P63099
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
FK506-BINDING PROTEIN
C
107Bos taurusMutation(s): 0 
Gene Names: FKBP1A (FKBP1)
EC: 5.2.1.8
Find proteins for P18203 (Bos taurus)
Go to Gene View: FKBP1A
Go to UniProtKB:  P18203
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FK5
Query on FK5

Download SDF File 
Download CCD File 
C
8-DEETHYL-8-[BUT-3-ENYL]-ASCOMYCIN
K506
C44 H69 N O12
QJJXYPPXXYFBGM-LFZNUXCKSA-N
 Ligand Interaction
MYR
Query on MYR

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Download CCD File 
B
MYRISTIC ACID
C14 H28 O2
TUNFSRHWOTWDNC-UHFFFAOYSA-N
 Ligand Interaction
PO4
Query on PO4

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Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
ZN
Query on ZN

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A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

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B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
FE
Query on FE

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Download CCD File 
A
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FK5Ki: 0.4 nM (99) BINDINGDB
FK5Kd: 0.2 nM (99) BINDINGDB
FK5IC50: 2.3 - 1000 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 90.050α = 90.00
b = 94.430β = 90.00
c = 116.760γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
SCALEPACKdata scaling
X-PLORphasing
X-PLORrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-02-12
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance