4N1O

Structure of Cyclophilin A in complex with Saccharin.

• PDB DOI: https://doi.org/10.2210/pdb4N1O/pdb

• Classification: ISOMERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-10-04 Released: 2015-08-12 
• Deposition Author(s): Mcnae, I.W., Dornan, J., Walkinshaw, M.D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 0.221 
• R-Value Work: 0.179 
• R-Value Observed: 0.181 

Literature

Mapping the binding surface of Cyclophilin A.

Mcnae, I.W., Dornan, D., Patterson, A.F., Wear, M.A., Blackburn, E.A., Walkinshaw, M.D.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 18.95 kDa 
• Atom Count: 1,614 
• Modelled Residue Count: 165 
• Deposited Residue Count: 165 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Peptidyl-prolyl cis-trans isomerase A	A	165	Homo sapiens	Mutation(s): 0  Gene Names: PPIA, CYPA EC: 5.2.1.8
UniProt & NIH Common Fund Data Resources
Find proteins for P62937 (Homo sapiens) Explore P62937  Go to UniProtKB:  P62937
PHAROS:  P62937 GTEx:  ENSG00000196262

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LSA	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A]	1,2-BENZISOTHIAZOL-3(2H)-ONE 1,1-DIOXIDE C7 H5 N O3 S CVHZOJJKTDOEJC-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 0.221 
• R-Value Work: 0.179 
• R-Value Observed: 0.181 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.94	α = 90
b = 52.99	β = 90
c = 88.48	γ = 90

Software Package:

Software Name	Purpose
DNA	data collection
PHASER	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-08-12 
Deposition Author(s): Mcnae, I.W., Dornan, J., Walkinshaw, M.D.

Revision History  

• Version 1.0: 2015-08-12
  Type: Initial release
  
• Version 1.1: 2024-02-28
  Changes: Data collection, Database references, Derived calculations