5QC9

Crystal structure of human Cathepsin-S with bound ligand

• PDB DOI: https://doi.org/10.2210/pdb5QC9/pdb
• Deposition Group: G_1002040 ExploreG_1002040

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 


• Deposited: 2017-08-04 Released: 2017-12-20 
• Deposition Author(s): Bembenek, S.D., Ameriks, M.K., Mirzadegan, T., Yang, H., Shao, C., Burley, S.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.169 
• R-Value Work: 0.136 
• R-Value Observed: 0.138 

Literature

Crystal structure of human Cathepsin-S with bound ligand

Bembenek, S.D., Ameriks, M.K., Mirzadegan, T., Yang, H., Shao, C., Burley, S.K.

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: 50.21 kDa 
• Atom Count: 4,053 
• Modelled Residue Count: 441 
• Deposited Residue Count: 446 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cathepsin S	A, B	223	Homo sapiens	Mutation(s): 1  Gene Names: CTSS EC: 3.4.22.27
UniProt & NIH Common Fund Data Resources
Find proteins for P25774 (Homo sapiens) Go to UniProtKB:  P25774
PHAROS:  P25774 GTEx:  ENSG00000163131

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BG7	C [auth A], D [auth B]	N-{[5-{1-[3-(dimethylamino)propyl]-5-[(piperidin-4-yl)acetyl]-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridin-3-yl}-2-(trifluoromethyl)phenyl]methyl}-3-methylbut-2-enamide C31 H43 F3 N6 O2 YYKUWQZWTBVESL-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
BG7	BindingDB:  5QC9	IC50: 260 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.169 
• R-Value Work: 0.136 
• R-Value Observed: 0.138 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.088	α = 102.44
b = 57.914	β = 107.47
c = 59.044	γ = 106.22

Software Package:

Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-12-20 
Deposition Author(s): Bembenek, S.D., Ameriks, M.K., Mirzadegan, T., Yang, H., Shao, C., Burley, S.K.

Revision History  

• Version 1.0: 2017-12-20
  Type: Initial release
  
• Version 1.1: 2018-02-21
  Changes: Structure summary
• Version 2.0: 2018-06-06
  Changes: Atomic model, Data collection, Derived calculations, Refinement description, Structure summary
• Version 2.1: 2021-02-10
  Changes: Database references, Structure summary
• Version 2.2: 2021-11-17
  Changes: Advisory, Database references, Structure summary
• Version 2.3: 2024-10-16
  Changes: Data collection, Structure summary