Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 23.36 kDa 
• Atom Count: 1705 
• Modelled Residue Count: 215 
• Deposited Residue Count: 215 
• Unique protein chains: 1

1F2B

CRYSTAL STRUCTURE ANALYSIS OF CRUZAIN BOUND TO VINYL SULFONE DERIVED INHIBITOR (III)

• PDB DOI: 10.2210/pdb1F2B/pdb

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


• Deposited: 2000-05-23 Released: 2000-07-26 
• Deposition Author(s): Brinen, L.S., Hansell, E., Roush, W.R., McKerrow, J.H., Fletterick, R.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.203 
• R-Value Work: 0.173 

Literature

A target within the target: probing cruzain's P1' site to define structural determinants for the Chagas' disease protease.

Brinen, L.S., Hansell, E., Cheng, J., Roush, W.R., McKerrow, J.H., Fletterick, R.J.

(2000) Structure 8: 831-840

• PubMed: 10997902 
• DOI: 10.1016/s0969-2126(00)00173-8
• Primary Citation of Related Structures:  
  1F29, 1F2A, 1F2B, 1F2C


• PubMed Abstract: 
  

Cysteine proteases of the papain superfamily are present in nearly all groups of eukaryotes and play vital roles in a wide range of biological processes and diseases, including antigen and hormone processing, bacterial infection, arthritis, osteoporosis, Alzheimer's disease and cancer-cell invasion. Because they are critical to the life-cycle progression of many pathogenic protozoa, they represent potential targets for selective inhibitors. Chagas' disease, the leading cause of death due to heart disease in Latin American countries, is transmitted by Trypanosoma cruzi. Cruzain is the major cysteine protease of T cruzi and has been the target of extensive structure-based drug design.

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Related Citations: 

• The Crystal Structure of Cruzain: a Therapeutic Target for Chagas' Disease
  McGrath, M.E., Eakin, A.E., Engel, J.C., McKerrow, J.H., Craik, C.S., Fletterick, R.J.
  (1995) J Mol Biol 247: 251

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Organizational Affiliation: 

Department of Pathology, University of California, San Francisco 94143, USA. [e-mail]

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
VS3	B [auth A]	3-[N-[BENZYLOXYCARBONYL]-PHENYLALANINYL-AMINO]-5-PHENYL-PENTANE-1-SULFONIC ACID 4-NITRO-PHENYL ESTER C34 H35 N3 O8 S WABCRPSWXFHXDH-NYDCQLBNSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.203 
• R-Value Work: 0.173 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.18	α = 90
b = 51.36	β = 116.17
c = 45.56	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-05-23 
• Released Date: 2000-07-26 
Deposition Author(s): Brinen, L.S., Hansell, E., Roush, W.R., McKerrow, J.H., Fletterick, R.J.

Revision History  

• Version 1.0: 2000-07-26
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance