cathepsin L | C1: Papain | IUPHAR Guide to IMMUNOPHARMACOLOGY

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cathepsin L

Target id: 2351

Nomenclature: cathepsin L

Family: C1: Papain

Annotation status:  image of an orange circle Annotated and awaiting review. Please contact us if you can help with reviewing.  » Email us

   GtoImmuPdb view: ON :     cathepsin L has curated data in GtoImmuPdb

Gene and Protein Information
Species TM AA Chromosomal Location Gene Symbol Gene Name Reference
Human - 333 9q21.33 CTSL cathepsin L
Mouse - 334 13 B3 Ctsl cathepsin L
Previous and Unofficial Names
cathepsin L1 | fs | furless | MEP | nackt | nkt | Cat L | p39 cysteine proteinase
Database Links
Specialist databases
MEROPS C01.032 (Hs)
Other databases
ChEMBL Target
Ensembl Gene
Entrez Gene
Human Protein Atlas
KEGG Enzyme
RefSeq Nucleotide
RefSeq Protein
Enzyme Reaction
EC Number:

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

Key to terms and symbols View all chemical structures Click column headers to sort
Ligand Sp. Action Affinity Units Reference
CAA0225 Rn Inhibition 8.7 pIC50 3
pIC50 8.7 (IC50 1.9x10-9 M) [3]
LHVS Hs Inhibition 8.1 pIC50 2
pIC50 8.1 (IC50 7x10-9 M) [2]
KGP94 Hs Inhibition 6.9 pIC50 1
pIC50 6.9 (IC50 1.314x10-7 M) [1]
View species-specific inhibitor tables


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1. Kumar GD, Chavarria GE, Charlton-Sevcik AK, Yoo GK, Song J, Strecker TE, Siim BG, Chaplin DJ, Trawick ML, Pinney KG. (2010) Functionalized benzophenone, thiophene, pyridine, and fluorene thiosemicarbazone derivatives as inhibitors of cathepsin L. Bioorg. Med. Chem. Lett., 20 (22): 6610-5. [PMID:20933415]

2. Méthot N, Rubin J, Guay D, Beaulieu C, Ethier D, Reddy TJ, Riendeau D, Percival MD. (2007) Inhibition of the activation of multiple serine proteases with a cathepsin C inhibitor requires sustained exposure to prevent pro-enzyme processing. J. Biol. Chem., 282 (29): 20836-46. [PMID:17535802]

3. Takahashi K, Ueno T, Tanida I, Minematsu-Ikeguchi N, Murata M, Kominami E. (2009) Characterization of CAA0225, a novel inhibitor specific for cathepsin L, as a probe for autophagic proteolysis. Biol. Pharm. Bull., 32 (3): 475-9. [PMID:19252298]

How to cite this page

C1: Papain: cathepsin L. Last modified on 21/04/2017. Accessed on 18/01/2019. IUPHAR/BPS Guide to PHARMACOLOGY,