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: 2.50 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.195 
  • R-Value Observed: 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

  • DOI: 10.1016/0092-8674(95)90439-5
  • Structures With Same Primary Citation

  • 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 B2A375Bos taurusMutation(s): 0 
Gene Names: PPP3CA
EC: 3.1.3.16
Find proteins for P48452 (Bos taurus)
Explore P48452 
Go to UniProtKB:  P48452
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE PHOSPHATASE B2B169Bos taurusMutation(s): 0 
Gene Names: PPP3R1CNA2CNB
EC: 3.1.3.16
Find proteins for P63099 (Bos taurus)
Explore P63099 
Go to UniProtKB:  P63099
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
FK506-BINDING PROTEINC107Bos taurusMutation(s): 0 
Gene Names: FKBP1AFKBP1
EC: 5.2.1.8
Find proteins for P18203 (Bos taurus)
Explore P18203 
Go to UniProtKB:  P18203
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FK5
Query on FK5

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

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

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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
FE
Query on FE

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

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B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
FK5Kd:  0.20000000298023224   nM  BindingDB
FK5Kd:  20   nM  BindingDB
FK5IC50:  14   nM  BindingDB
FK5Ki:  0.4000000059604645   nM  BindingDB
FK5IC50:  1000   nM  BindingDB
FK5IC50:  2.299999952316284   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.05α = 90
b = 94.43β = 90
c = 116.76γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

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