6BKI | pdb_00006bki

Crystal structure of T101A variant mouse cathepsin K at 2.94 Angstrom resolution.

• PDB DOI: https://doi.org/10.2210/pdb6BKI/pdb

• Classification: HYDROLASE
• Organism(s): Mus musculus
• Expression System: Komagataella pastoris
• Mutation(s): Yes 


• Deposited: 2017-11-08 Released: 2018-11-14 
• Deposition Author(s): Law, S., Aguda, A., Brayer, G., Bromme, D.
• Funding Organization(s): Canadian Institutes of Health Research (CIHR), Natural Sciences and Engineering Research Council (NSERC, Canada)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.94 Å
• R-Value Free: 
  0.236 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.193 (Depositor), 0.190 (DCC) 
• R-Value Observed: 
  0.196 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of T101A variant mouse cathepsin K at 2.94 Angstrom resolution.

Law, S., Bromme, D.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 47.03 kDa 
• Atom Count: 3,303 
• Modeled Residue Count: 430 
• Deposited Residue Count: 430 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cathepsin K	A, B	215	Mus musculus	Mutation(s): 1  Gene Names: Ctsk EC: 3.4.22.38
UniProt & NIH Common Fund Data Resources
Find proteins for P55097 (Mus musculus) Explore P55097  Go to UniProtKB:  P55097
IMPC:  MGI:107823

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth A], D [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.94 Å
• R-Value Free:  0.236 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.193 (Depositor), 0.190 (DCC) 
• R-Value Observed: 0.196 (Depositor) 

Space Group: P 4₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 105.22	α = 90
b = 105.22	β = 90
c = 41.811	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-11-14 
Deposition Author(s): Law, S., Aguda, A., Brayer, G., Bromme, D.

---

Funding Organization	Location	Grant Number
Canadian Institutes of Health Research (CIHR)	Canada	MOP-89974
Canadian Institutes of Health Research (CIHR)	Canada	MOP-125866
Canadian Institutes of Health Research (CIHR)	Canada	MOP-125866
Natural Sciences and Engineering Research Council (NSERC, Canada)	Canada	RGPIN-326803-13

Revision History  

• Version 1.0: 2018-11-14
  Type: Initial release
  
• Version 1.1: 2020-01-08
  Changes: Author supporting evidence
• Version 1.2: 2023-10-04
  Changes: Data collection, Database references, Refinement description
• Version 1.3: 2024-10-16
  Changes: Structure summary