CSTA Antibody

CSTA Antibody

  • Name
  • Description
  • Cat#
  • Pricings
  • Quantity
  • CSTA Antibody

  • Cystatin A, Mouse Anti Human
  • ANT-657
  • Shipped with Ice Packs

Catalogue number



Cystatin-A, Cystatin-AS, Stefin-A, CSTA, STF1, STFA.


Mouse Anti Human Monoclonal.


Cystatin-A is the intracellular inhibitor of cysteine proteinase cathepsin B (CatB) and belongs to family 1 of the cystatin superfamily of inhibitor proteins. CSTA is a stefin that functions as a cysteine protease inhibitor, forming tight complexes with papain and the cathepsins B, H, and L. It has been proposed that extracellular CatB together with other classes of proteinases are all subjected to a cascade-like manner of activation. CatB and its inhibitor Cystatin-A are involved in degradation of extracellular matrix proteins during tissue remodeling. CSTA is one of the precursor proteins of cornified cell envelope in keratinocytes and plays a role in epidermal development and maintenance. Cystatin-A has been reported to be found in high concentrations in epithelial cells, polymorphonuclear leukocytes and lymphoid tissue. Stefins may be used as prognostic and diagnostic tools for cancer.



Physical Appearance

Sterile filtered colorless solution.


Anti-human CSTA mAb, is derived from hybridization of mouse F0 myeloma cells with spleen cells from BALB/c mice immunized with a recombinant human CSTA protein 1-98 amino acids purified from E. coli.

Ig Subclass

Mouse IgG1 heavy chain and k light chain.

Purification Method

CSTA antibody was purified from mouse ascitic fluids by protein-A affinity chromatography.


1mg/ml containing PBS, pH-7.4, 10% Glycerol and 0.02% Sodium Azide.

Storage Procedures

For periods up to 1 month store at 4°C, for longer periods of time, store at -20°C. 
Prevent freeze thaw cycles.

Stability / Shelf Life

12 months at -20°C. 1 month at 4°C.


The antibody has been tested by ELISA, Western blot analysis, Flow cytometry and ICC/IF to assure specificity and reactivity. Since application varies, however, each investigation should be titrated by the reagent to obtain optimal results.

Safety Data Sheet


ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
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