Human Cathepsin A/Lysosomal Carboxypeptidase A Antibody

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Product Details
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Human Cathepsin A/Lysosomal Carboxypeptidase A Antibody Summary

Species Reactivity
Detects human Cathepsin A/Lysosomal Carboxypeptidase A in direct ELISAs and Western blots. In Western blots, detects the single chain (55 kDa) and heavy chain (32 kDa) forms of recombinant human (rh) Cathepsin A. In Western blots, less than 5% cross-reactivity with rhCathepsin B, C, D, E, L, O, S, X and Z is observed and no cross-reactivity with the light chain (20 kDa) of rhCathepsin A is observed.
Monoclonal Mouse IgG2A Clone # 179803
Protein A or G purified from hybridoma culture supernatant
Mouse myeloma cell line NS0-derived recombinant human Cathepsin A/Lysosomal Carboxypeptidase A
Ala29-Tyr480 (predicted)
Accession # P10619
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
1 µg/mL
Recombinant Human Cathepsin A/Lysosomal Carboxypeptidase A (Catalog # 1049-SE)
25 µg/mL
Conditioned cell culture medium spiked with Recombinant Human Cathepsin A/Lysosomal Carboxypeptidase A (Catalog # 1049-SE), see our available Western blot detection antibodies

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

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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 A/Lysosomal Carboxypeptidase A

Cathepsin A/lyososomal carboxypeptidase A is a member of the serine carboxypeptidase family (1). Cathepsin A is a multifunctional enzyme that expresses deaminidase and esterase activities at neutral pH and carboxypeptidase activity at acidic pH. Also known as protective protein, its association with beta -galactosidase ( beta -gal) and neuraminidase is essential for beta -gal stability and neuraminidase activation in the lysosomes. Inherited deficiency of Cathepsin A causes the lysosomal storage disorder galactosialidosis, characterized by a combined secondary deficiency of beta -gal and neuraminidase. Cathepsin A is capable of hydrolyzing a variety of bioactive peptide hormones including tachykinins, indicating that extralysosomal Cathepsin A plays a role in regulation of functions of these molecules (2). Cathepsin A is synthesized as a single-chain precursor and processed into heavy (32 kDa) and light (20 kDa) chains, which are linked by disulfide bonds.

  1. Pshezhetsky, A.V. (2004) in Handbook of Proteolytic Enzymes (ed. Barrett, A.J. et al.) p. 1923, Academic Press, San Diego.
  2. Hiraiwa, M. (1999) Cell. Mol. Life. Sci. 56:894.
Entrez Gene IDs
5476 (Human); 19025 (Mouse)
Alternate Names
beta-galactosidase 2; beta-galactosidase protective protein; Carboxypeptidase C; Carboxypeptidase L; Cathepsin A; cathepsin ANGBE; CTSA; EC 3.4.16; EC; GLB2; GSL; Lysosomal Carboxypeptidase A; lysosomal protective protein; PPCA; PPGBprotective protein for beta-galactosidase (galactosialidosis); Protective protein cathepsin A; Protective protein for beta-galactosidase

Product Datasheets


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Isotype Controls

Mouse IgG2A Isotype Control

Reconstitution Buffers

Secondary Antibodies

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