• Species Reactivity

  Human, Mouse

• Specificity

  Detects human and mouse Cathepsin L in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant human Cathepsin B, C, L2, O, S, or X/Z/P is observed. In Western blots, both the pro and active forms of recombinant human and mouse Cathspsin L are recognized.

• Source

  Monoclonal Rat IgG    _2A Clone # 204101

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  Mouse myeloma cell line NS0-derived recombinant human Cathepsin L    
  Glu113-Val333    
  Accession # P07711

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Western Blot

  1 µg/mL

  See below

• 
  

• Immunohistochemistry

  5-25 µg/mL

  See below

• 
  

• Immunoprecipitation

  25 µg/mL

  Conditioned cell culture medium spiked with Recombinant Human Cathepsin L (Catalog # ) or Recombinant Mouse Cathepsin L (Catalog # ), . This antibody did not immunoprecipitate the pro form of recombinant mouse Cathepsin L.

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Data Examples

Preparation and Storage

• Reconstitution

  Reconstitute at 0.5 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• Stability & Storage

  Use a manual defrost freezer and avoid repeated freeze-thaw cycles.    

• 12 months from date of receipt, -20 to -70 °C as supplied.

• 1 month, 2 to 8 °C under sterile conditions after reconstitution.

• 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Cathepsin L

Cathepsin L is a lysosomal cysteine protease expressed in most eukaryotic cells. Cathepsin L is known to hydrolyze a number of proteins, including the proform of urokinase-type plasminogen activator, which is activated by Cathepsin L cleavage (1). Cathepsin L has also been shown to proteolytically inactivate alpha 1-antitrypsin and secretory leucoprotease inhibitor, two major protease inhibitors of the respiratory tract (2). These observations, combined with the demonstration of increased Cathepsin L activity in the epithelial lining fluid of the lungs of emphysema patients, have led to the suggestion that the enzyme may be involved in the progression of this disease. Cathepsin L has also been identified as a major excreted protein of transformed fibroblasts, indicating the enzyme could be involved in malignant tumor growth (3).

• References:

1. Goretzki, L. et al. (1992) FEBS Lett. 297:112.

2. Taggart, C.C. et al. (2001) J. Biol. Chem. 276:33345.

3. Gottesman, M.M. and F. Cabral (1981) Biochemistry 20:1659.

• Entrez Gene IDs:

  1514 (Human); 1514 (Human); 13039 (Mouse)

• Alternate Names:

  Cathepsin L; cathepsin L1; CATL; CTSL; CTSL1; CTSLEC 3.4.22.15; EC 3.4.22; FLJ31037; Major excreted protein; MEP