4ORC

Crystal structure of mammalian calcineurin

• PDB DOI: https://doi.org/10.2210/pdb4ORC/pdb

• Classification: HYDROLASE/METAL BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-02-11 Released: 2015-05-20 
• Deposition Author(s): Ma, L., Li, S.J., Wang, J., Wu, J.W., Wang, Z.X.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.260 
• R-Value Work: 0.215 
• R-Value Observed: 0.218 

Starting Model: experimental

Literature

Cooperative autoinhibition and multi-level activation mechanisms of calcineurin

Li, S.J., Ma, L., Wang, J., Lu, C., Wang, J., Wu, J.W., Wang, Z.X.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 80.96 kDa 
• Atom Count: 4,432 
• Modelled Residue Count: 544 
• Deposited Residue Count: 714 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein phosphatase 2B catalytic subunit beta isoform	A	544	Homo sapiens	Mutation(s): 0  Gene Names: CALNA2, CALNB, CNA2, PPP3CB EC: 3.1.3.16
UniProt & NIH Common Fund Data Resources
Find proteins for P16298 (Homo sapiens) Explore P16298  Go to UniProtKB:  P16298
PHAROS:  P16298 GTEx:  ENSG00000107758

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Calcineurin subunit B type 1	B	170	Homo sapiens	Mutation(s): 0  Gene Names: CNA2, CNB, PPP3R1
UniProt & NIH Common Fund Data Resources
Find proteins for P63098 (Homo sapiens) Explore P63098  Go to UniProtKB:  P63098
PHAROS:  P63098 GTEx:  ENSG00000221823

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PO4	E [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
ZN	C [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
FE	D [auth A]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N
CA	F [auth B], G [auth B], H [auth B], I [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.260 
• R-Value Work: 0.215 
• R-Value Observed: 0.218 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 110.2	α = 90
b = 110.2	β = 90
c = 282.488	γ = 120

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-05-20 
Deposition Author(s): Ma, L., Li, S.J., Wang, J., Wu, J.W., Wang, Z.X.

Revision History  

• Version 1.0: 2015-05-20
  Type: Initial release
  
• Version 1.1: 2016-12-21
  Changes: Structure summary
• Version 1.2: 2023-11-08
  Changes: Data collection, Database references, Derived calculations, Refinement description