1LO6

Human Kallikrein 6 (hK6) active form with benzamidine inhibitor at 1.56 A resolution

• PDB DOI: https://doi.org/10.2210/pdb1LO6/pdb

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


• Deposited: 2002-05-06 Released: 2002-05-15 
• Deposition Author(s): Bernett, M.J., Blaber, S.I., Scarisbrick, I.A., Dhanarajan, P., Thompson, S.M., Blaber, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.56 Å
• R-Value Free: 0.223 
• R-Value Work: 0.196 
• R-Value Observed: 0.197 

Starting Model: experimental

Literature

Crystal structure and biochemical characterization of human kallikrein 6 reveals a trypsin-like kallikrein is expressed in the central nervous system

Bernett, M.J., Blaber, S.I., Scarisbrick, I.A., Dhanarajan, P., Thompson, S.M., Blaber, M.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 24.68 kDa 
• Atom Count: 1,862 
• Modelled Residue Count: 221 
• Deposited Residue Count: 223 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kallikrein 6	A	223	Homo sapiens	Mutation(s): 0  EC: 3.4.21
UniProt & NIH Common Fund Data Resources
Find proteins for Q92876 (Homo sapiens) Explore Q92876  Go to UniProtKB:  Q92876
PHAROS:  Q92876 GTEx:  ENSG00000167755

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BEN	C [auth A]	BENZAMIDINE C7 H8 N2 PXXJHWLDUBFPOL-UHFFFAOYSA-N
MG	B [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.56 Å
• R-Value Free: 0.223 
• R-Value Work: 0.196 
• R-Value Observed: 0.197 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 39.207	α = 90
b = 61.814	β = 90
c = 85.838	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CNS	refinement
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-05-15 
Deposition Author(s): Bernett, M.J., Blaber, S.I., Scarisbrick, I.A., Dhanarajan, P., Thompson, S.M., Blaber, M.

Revision History  

• Version 1.0: 2002-05-15
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-16
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.4: 2024-10-30
  Changes: Structure summary