2FRQ

Human Cathepsin S with Inhibitor CRA-26871

• PDB DOI: https://doi.org/10.2210/pdb2FRQ/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2006-01-19 Released: 2006-07-25 
• Deposition Author(s): Somoza, J.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.201 
• R-Value Work: 0.187 
• R-Value Observed: 0.188 

Literature

Human Cathepsin S with Inhibitor CRA-26871

Somoza, J.R.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 51.04 kDa 
• Atom Count: 3,845 
• Modelled Residue Count: 435 
• Deposited Residue Count: 450 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
cathepsin S	A, B	225	Homo sapiens	Mutation(s): 0  EC: 3.4.22.27
UniProt & NIH Common Fund Data Resources
Find proteins for P25774 (Homo sapiens) Explore P25774  Go to UniProtKB:  P25774
PHAROS:  P25774 GTEx:  ENSG00000163131

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
C71	C [auth A], D [auth B]	N-[4-(AMINOMETHYL)-1,1-DIOXIDOTETRAHYDRO-2H-THIOPYRAN-4-YL]-3-(1-METHYLCYCLOPENTYL)-N~2~-[(1E)-N-(PHENYLSULFONYL)ETHANIMIDOYL]-L-ALANINAMIDE C23 H36 N4 O5 S2 HHATUZWPRPHWDY-FQEVSTJZSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.201 
• R-Value Work: 0.187 
• R-Value Observed: 0.188 
• Space Group: P 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.886	α = 90
b = 85.886	β = 90
c = 151.488	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CNS	refinement
PDB_EXTRACT	data extraction
EPMR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-07-25 
Deposition Author(s): Somoza, J.R.

Revision History  

• Version 1.0: 2006-07-25
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description
• Version 1.4: 2024-11-13
  Changes: Data collection, Database references, Derived calculations, Structure summary