1EWP | pdb_00001ewp

CRUZAIN BOUND TO MOR-LEU-HPQ

• PDB DOI: https://doi.org/10.2210/pdb1EWP/pdb

• Classification: HYDROLASE/HYDROLASE inhibitor
• Organism(s): Trypanosoma cruzi
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-04-26 Released: 2000-05-17 
• Deposition Author(s): Gillmor, S.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 
  0.206 (Depositor), 0.204 (DCC) 
• R-Value Work: 
  0.183 (Depositor), 0.181 (DCC) 
• R-Value Observed: 
  0.183 (Depositor) 

Literature

Chapter 3: X-ray Structures of Complexes of Cruzain with Designed Covalent Inhibitors

Gillmor, S.A.

(1998) Enzyme-ligand Interactions, Inhibition And Specificity : 50-80

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 23.14 kDa 
• Atom Count: 1,682 
• Modeled Residue Count: 215 
• Deposited Residue Count: 215 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CRUZAIN	A	215	Trypanosoma cruzi	Mutation(s): 0  EC: 3.4.22 (PDB Primary Data), 3.4.22.51 (UniProt)
UniProt
Find proteins for P25779 (Trypanosoma cruzi) Explore P25779  Go to UniProtKB:  P25779

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
0I5	B [auth A]	N-[(3S)-1-fluoro-2-oxo-5-phenylpentan-3-yl]-N~2~-(morpholin-4-ylcarbonyl)-L-leucinamide C22 H32 F N3 O4 DKMMRKMNRYVVBC-OALUTQOASA-N

Biologically Interesting Molecules (External Reference) 

1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_000312 (0I5)	B [auth A]	Morpholino-Leu-homoPhe-FMK	Peptide-like / Inhibitor

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free:  0.206 (Depositor), 0.204 (DCC) 
• R-Value Work:  0.183 (Depositor), 0.181 (DCC) 
• R-Value Observed: 0.183 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.511	α = 90
b = 51.654	β = 114.76
c = 45.259	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-05-17 
Deposition Author(s): Gillmor, S.A.

Revision History  

• Version 1.0: 2000-05-17
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
• Version 1.3: 2012-12-12
  Changes: Other
• Version 1.4: 2024-03-13
  Changes: Data collection, Database references, Derived calculations, Source and taxonomy, Structure summary
• Version 1.5: 2024-10-30
  Changes: Structure summary