1CWC

IMPROVED BINDING AFFINITY FOR CYCLOPHILIN A BY A CYCLOSPORIN DERIVATIVE SINGLY MODIFIED AT ITS EFFECTOR DOMAIN

• PDB DOI: https://doi.org/10.2210/pdb1CWC/pdb

• Classification: ISOMERASE/IMMUNOSUPPRESSANT
• Organism(s): Homo sapiens, Tolypocladium inflatum
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 1995-09-06 Released: 1996-01-29 
• Deposition Author(s): Mikol, V.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.86 Å
• R-Value Work: 0.177 
• R-Value Observed: 0.177 

Literature

Improved Binding Affinity for Cyclophilin a by a Cyclosporin Derivative Singly Modified at its Effector Domain.

Papageorgiou, C., Florineth, A., Mikol, V.

(1994) J Med Chem 37: 3674

• PubMed: 7966126 
• DOI: https://doi.org/10.1021/jm00048a002
• Primary Citation of Related Structures:  
  1CWC

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Organizational Affiliation: 

Sandoz Pharma Ltd., Preclinical Research, Basle, Switzerland.

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: 19.27 kDa 
• Atom Count: 1,521 
• Modelled Residue Count: 176 
• Deposited Residue Count: 176 
• Unique protein chains: 2

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: CYCLOPHILIN 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

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CYCLOSPORIN A	B [auth C]	11	Tolypocladium inflatum	Mutation(s): 1

Small Molecules

Modified Residues  6 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
ABA	B [auth C]	L-PEPTIDE LINKING	C4 H9 N O2		ALA
BMT	B [auth C]	L-PEPTIDE LINKING	C10 H19 N O3		THR
MLE	B [auth C]	L-PEPTIDE LINKING	C7 H15 N O2		LEU
MNL	B [auth C]	L-PEPTIDE LINKING	C8 H17 N O2		LEU
MVA	B [auth C]	L-PEPTIDE LINKING	C6 H13 N O2		VAL
SAR	B [auth C]	PEPTIDE LINKING	C3 H7 N O2		GLY

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_001108	B [auth C]	Cyclosporin A variant, MLE 8 to MNL	Cyclic peptide / Immunosuppressant

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.86 Å
• R-Value Work: 0.177 
• R-Value Observed: 0.177 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.394	α = 90
b = 61.132	β = 90
c = 73.362	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1996-01-29 
Deposition Author(s): Mikol, V.

Revision History  

• Version 1.0: 1996-01-29
  Type: Initial release
  
• Version 1.1: 2011-06-14
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2011-07-27
  Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary
• Version 1.4: 2012-12-12
  Changes: Other
• Version 1.5: 2024-06-05
  Changes: Data collection, Database references, Derived calculations, Other