1CGH

Human cathepsin G

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

The 1.8 A crystal structure of human cathepsin G in complex with Suc-Val-Pro-PheP-(OPh)2: a Janus-faced proteinase with two opposite specificities.

Hof, P., Mayr, I., Huber, R., Korzus, E., Potempa, J., Travis, J., Powers, J.C., Bode, W.

(1996) EMBO J 15: 5481-5491

  • Primary Citation of Related Structures:  
    1CGH

  • PubMed Abstract: 

    • The crystal structure of human neutrophil cathepsin G, complexed with the peptidyl phosphonate inhibitor Suc-Val-Pro-PheP-(OPh)2, has been determined to a resolution of 1.8 A using Patterson search techniques. The cathepsin G structure shows the polypept ...

    The crystal structure of human neutrophil cathepsin G, complexed with the peptidyl phosphonate inhibitor Suc-Val-Pro-PheP-(OPh)2, has been determined to a resolution of 1.8 A using Patterson search techniques. The cathepsin G structure shows the polypeptide fold characteristic of trypsin-like serine proteinases and is especially similar to rat mast cell proteinase II. Unique to cathepsin G, however, is the presence of Glu226 (chymotrypsinogen numbering), which is situated at the bottom of the S1 specificity pocket, dividing it into two compartments. For this reason, the benzyl side chain of the inhibitor PheP residue does not fully occupy the pocket but is, instead, located at its entrance. Its positively charged equatorial edge is involved in a favourable electrostatic interaction with the negatively charged carboxylate group of Glu226. Arrangement of this Glu226 carboxylate would also allow accommodation of a Lys side chain in this S1 pocket, in agreement with the recently observed cathepsin G preference for Lys and Phe at P1. The cathepsin G complex with the covalently bound phosphonate inhibitor mimics a tetrahedral substrate intermediate. A comparison of the Arg surface distributions of cathepsin G, leukocyte elastase and rat mast cell protease II shows no simple common recognition pattern for a mannose-6-phosphate receptor-independent targeting mechanism for sorting of these granular proteinases.

    Organizational Affiliation: 

    Max-Planck-Institut für Biochemie, Planegg-Martinsried, Germany.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CATHEPSIN G A224Homo sapiensMutation(s): 0 
Gene Names: CTSG
EC: 3.4.21.20
Find proteins for P08311 (Homo sapiens)
Explore P08311 
Go to UniProtKB:  P08311
NIH Common Fund Data Resources
PHAROS:  P08311
GTEx:  ENSG00000100448
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1ZG
Query on 1ZG
Download Ideal Coordinates CCD File 
A
N-(3-carboxypropanoyl)-L-valyl-N-{(1R)-1-[(S)-hydroxy(oxido)phosphanyl]-2-phenylethyl}-L-prolinamide
C22 H32 N3 O8 P
KPGFVOVOBVGIMY-HQRMLTQVSA-N		 Ligand Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000399 (1ZG)
Query on PRD_000399		APHOSPHONATE INHIBITOR SUC-VAL-PRO-PHEP-(OPH)2Peptide-like /  Inhibitor

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.04α = 90
b = 63.61β = 90
c = 79.72γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
ROTAVATAdata reduction
AGROVATAdata reduction
X-PLORmodel building
X-PLORrefinement
CCP4data scaling
ROTAVATA)data scaling
X-PLORphasing

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 1996-06-26 
  • Released Date: 1997-07-07 
    • Deposition Author(s): Hof, P., Bode, W.

Revision History 

  • Version 1.0: 1997-07-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2012-12-12
    Changes: Other