proteinase 3

Target id: 2401

Nomenclature: proteinase 3

Family: S1: Chymotrypsin

Annotation status:  image of a grey circle Awaiting annotation/under development. Please contact us if you can help with annotation.  » Email us

   GtoImmuPdb view: OFF :     proteinase 3 has curated GtoImmuPdb data

Gene and Protein Information
Species TM AA Chromosomal Location Gene Symbol Gene Name Reference
Human - 256 19p13.3 PRTN3 proteinase 3
Mouse - 254 10 C1 Prtn3 proteinase 3
Rat - 254 7q11 Prtn3 proteinase 3
Previous and Unofficial Names
ACPA | AGP7 | Wegener granulomatosis autoantigen | C-ANCA | MBT | myeloblastin | PR3
Database Links
Specialist databases
MEROPS S01.134 (Hs)
Other databases
BRENDA
ChEMBL Target
Ensembl Gene
Entrez Gene
GenitoUrinary Development Molecular Anatomy Project
Human Protein Atlas
KEGG Enzyme
KEGG Gene
OMIM
Orphanet
RefSeq Nucleotide
RefSeq Protein
UniProtKB
Wikipedia
Selected 3D Structures
Image of receptor 3D structure from RCSB PDB
Description:  X-ray crystal structure of human proteinase 3 (PR3).
PDB Id:  1FUJ
Resolution:  2.2Å
Species:  Human
References:  2
Enzyme Reaction
EC Number: 3.4.21.76

Download all structure-activity data for this target as a CSV file

Inhibitors
Key to terms and symbols View all chemical structures Click column headers to sort
Ligand Sp. Action Affinity Units Reference
azapro-3 Hs Inhibition 5.8 pKi 1
pKi 5.8 (Ki 1.5x10-6 M) [1]
compound 4g [PMID: 22595175] Hs Inhibition 5.8 pIC50 4
pIC50 5.8 (IC50 1.4x10-6 M) [4]
Immunopharmacology Comments
Proteinase 3 (PR3), called myeloblastin when it was first identified, is an abundant serine protease found principally in neutrophil granules (but is also found on the surface of quiescent human neutrophils from peripheral blood). It is stored in the primary granules of circulating neutrophils alongside other cathepsin C-activated neutrophil serine proteases (NSPs), such as human neutrophil elastase (HNE), CatG, and NSP4. In pathological conditions it is thought that PR3 behaves to accelerate inflammation, by enhancing cytokine bioactivity, inactivating anti-inflammatory mediators and by promoting tissue injury (potentially by degrading extra-cellular matrix components like elastin, collagen, fibronectin, and laminins). In addition, imbalances between NSPs and their endogenous inhibitors can contribute towards pathological tissue damage, such as the damage associated with inflammatory lung diseases like chronic obstructive pulmonary disease (COPD), emphysema, and cystic fibrosis. PR3 inhibitors are considered to be useful clinical candidates for anti-inflammatory drug development [3].
Immuno Cell Type Associations
Immuno Cell Type:  Granulocytes
Cell Ontology Term:   neutrophil (CL:0000775)
Comment: 
References: 
Immuno Process Associations
Immuno Process:  Inflammation
Immuno Process ID:  2
Comment: 
GO Annotation:  Associated to GO processes
GO Processes:  neutrophil degranulation (GO:0043312) TAS
negative regulation of phagocytosis (GO:0050765) IDA
neutrophil extravasation (GO:0072672) IMP
References: 
Immuno Process:  Antigen presentation
Immuno Process ID:  3
Comment: 
GO Annotation:  Associated to GO processes
GO Processes:  negative regulation of phagocytosis (GO:0050765) IDA
References: 
Immuno Process:  Chemotaxis & migration
Immuno Process ID:  10
Comment: 
GO Annotation:  Associated to GO processes
GO Processes:  neutrophil extravasation (GO:0072672) IMP
References: 
Immuno Process:  Immune system development
Immuno Process ID:  8
Comment: 
GO Annotation:  Associated to GO processes
GO Processes:  mature conventional dendritic cell differentiation (GO:0097029) IDA
References: 
Immuno Process:  Cellular signalling
Immuno Process ID:  11
Comment: 
GO Annotation:  Associated to GO processes
GO Processes:  neutrophil degranulation (GO:0043312) TAS
References: 
Clinically-Relevant Mutations and Pathophysiology
Disease:  Wegener granulomatosis
Synonyms: Wegener's granulomatosis [Disease Ontology: DOID:12132]
Disease Ontology: DOID:12132
OMIM: 608710
Orphanet: ORPHA900

References

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1. Epinette C, Croix C, Jaquillard L, Marchand-Adam S, Kellenberger C, Lalmanach G, Cadene M, Viaud-Massuard MC, Gauthier F, Korkmaz B. (2012) A selective reversible azapeptide inhibitor of human neutrophil proteinase 3 derived from a high affinity FRET substrate. Biochem. Pharmacol.83 (6): 788-96. [PMID:22209715]

2. Fujinaga M, Chernaia MM, Halenbeck R, Koths K, James MN. (1996) The crystal structure of PR3, a neutrophil serine proteinase antigen of Wegener's granulomatosis antibodies. J. Mol. Biol.261 (2): 267-78. [PMID:8757293]

3. Korkmaz B, Lesner A, Guarino C, Wysocka M, Kellenberger C, Watier H, Specks U, Gauthier F, Jenne DE. (2016) Inhibitors and Antibody Fragments as Potential Anti-Inflammatory Therapeutics Targeting Neutrophil Proteinase 3 in Human Disease. Pharmacol. Rev.68 (3): 603-30. [PMID:27329045]

4. Santana AB, Lucas SD, Gonçalves LM, Correia HF, Cardote TA, Guedes RC, Iley J, Moreira R. (2012) N-Acyl and N-sulfonyloxazolidine-2,4-diones are pseudo-irreversible inhibitors of serine proteases. Bioorg. Med. Chem. Lett.22 (12): 3993-7. [PMID:22595175]

How to cite this page

S1: Chymotrypsin: proteinase 3. Last modified on 14/03/2017. Accessed on 14/12/2017. IUPHAR/BPS Guide to PHARMACOLOGY, http://www.guidetopharmacology.org/GRAC/ObjectDisplayForward?objectId=2401.