5C1V

CRYSTAL STRUCTURE ANALYSIS OF CATALYTIC SUBUNIT OF HUMAN CALCINEURIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.35 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Calcineurin Undergoes a Conformational Switch Evoked via Peptidyl-Prolyl Isomerization.

Guasch, A.Aranguren-Ibanez, A.Perez-Luque, R.Aparicio, D.Martinez-Hyer, S.Mulero, M.C.Serrano-Candelas, E.Perez-Riba, M.Fita, I.

(2015) Plos One 10: e0134569-e0134569

  • DOI: 10.1371/journal.pone.0134569

  • PubMed Abstract: 
  • A limited repertoire of PPP family of serine/threonine phosphatases with a highly conserved catalytic domain acts on thousands of protein targets to orchestrate myriad central biological roles. A major structural reorganization of human calcineurin, ...

    A limited repertoire of PPP family of serine/threonine phosphatases with a highly conserved catalytic domain acts on thousands of protein targets to orchestrate myriad central biological roles. A major structural reorganization of human calcineurin, a ubiquitous Ser/Thr PPP regulated by calcium and calmodulin and targeted by immunosuppressant drugs cyclosporin A and FK506, is unveiled here. The new conformation involves trans- to cis-isomerization of proline in the SAPNY sequence, highly conserved across PPPs, and remodels the main regulatory site where NFATc transcription factors bind. Transitions between cis- and trans-conformations may involve peptidyl prolyl isomerases such as cyclophilin A and FKBP12, which are known to physically interact with and modulate calcineurin even in the absence of immunosuppressant drugs. Alternative conformations in PPPs provide a new perspective on interactions with substrates and other protein partners and may foster development of more specific inhibitors as drug candidates.


    Organizational Affiliation

    Institut de Biologia Molecular de Barcelona (IBMB-CSIC), Parc Científic, Baldiri Reixac 10, 08028, Barcelona, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform
A, B
346Homo 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
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

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

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

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.35 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.216 
  • Space Group: P 62 2 2
Unit Cell:
Length (Å)Angle (°)
a = 185.008α = 90.00
b = 185.008β = 90.00
c = 106.744γ = 120.00
Software Package:
Software NamePurpose
SCALAdata scaling
MOSFLMdata reduction
MOLREPphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministerio Ciencia InnovacionSpainBFU2012-36827
Generalitat de CatalunyaSpain2014SGR927
Ministerio Ciencia InnovacionSpainSAF2009-08216
Generalitat de CatalunyaSpain2009SGR1490

Revision History 

  • Version 1.0: 2016-02-03
    Type: Initial release