1A33 | pdb_00001a33

PEPTIDYLPROLYL ISOMERASE, CYCLOPHILIN-LIKE DOMAIN FROM BRUGIA MALAYI

• PDB DOI: https://doi.org/10.2210/pdb1A33/pdb

• Classification: ISOMERASE
• Organism(s): Brugia malayi
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1998-01-27 Released: 1998-07-29 
• Deposition Author(s): Mikol, V., Ma, D., Carlow, C.K.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 
  0.211 (Depositor) 
• R-Value Work: 
  0.169 (Depositor), 0.167 (DCC) 
• R-Value Observed: 
  0.169 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of the cyclophilin-like domain from the parasitic nematode Brugia malayi.

Mikol, V., Ma, D., Carlow, C.K.

(1998) Protein Sci 7: 1310-1316

• PubMed: 9655334 
• DOI: https://doi.org/10.1002/pro.5560070606
• Primary Citation Related Structures: 
  1A33


• PubMed Abstract: 
  

  Cyclophilins are a family of proteins that exhibit peptidyl-prolyl cis-trans isomerase activity and bind the immunosuppressive agent cyclosporin A (CsA). Brugia malayi is a filarial nematode parasite of humans, for which a cyclophilin-like domain was identified at the N-terminal of a protein containing 843 amino acid residues. There are two differences in sequence in the highly conserved CsA binding site: A histidine and a lysine replace a tryptophan and an alanine, respectively. The crystal structure of this domain has been determined by the molecular replacement method and refined to an R-factor of 16.9% at 2.15 A resolution. The overall structure is similar to other cyclophilins; however, major differences occur in two loops. Comparison of the CsA binding site of this domain with members of the cyclophilin family shows significant structural differences, which can account for the reduced sensitivity of the Brugia malayi protein to inhibition by CsA.

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Organizational Affiliation: 
• Department of Structural Biology, Rhône-Poulenc Rorer, Vitry/Seine, France. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 19.5 kDa 
• Atom Count: 1,572 
• Modeled Residue Count: 174 
• Deposited Residue Count: 177 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PEPTIDYLPROLYL ISOMERASE	A	177	Brugia malayi	Mutation(s): 0  Gene Names: BMCYP-1 EC: 5.2.1.8
UniProt
Find proteins for Q27450 (Brugia malayi) Explore Q27450  Go to UniProtKB:  Q27450

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free:  0.211 (Depositor) 
• R-Value Work:  0.169 (Depositor), 0.167 (DCC) 
• R-Value Observed: 0.169 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.9	α = 90
b = 57.9	β = 90
c = 140.13	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-07-29 
Deposition Author(s): Mikol, V., Ma, D., Carlow, C.K.S.

Revision History  

• Version 1.0: 1998-07-29
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-02
  Changes: Database references, Other, Refinement description
• Version 1.4: 2024-05-22
  Changes: Data collection