Key Product Details

Species Reactivity

Human

Applications

Western Blot, Immunoprecipitation

Label

Unconjugated

Antibody Source

Polyclonal Goat IgG
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Product Specifications

Immunogen

E. coli-derived recombinant human Cystatin A
Ile2-Phe98
Accession # P01040

Specificity

Detects Cystatin A in direct ELISAs and Western blots. In Western blots, less than 1% cross‑reactivity with recombinant mouse (rm) Cystatin A, recombinant human (rh) Cystatin B, rhCystatin C, rhCystatin D, rhCystatin E/M, rhCystatin F, rhCystatin S, rhCystatin SA and rhCystatin SN is observed.  

Clonality

Polyclonal

Host

Goat

Isotype

IgG

Scientific Data Images for Human Cystatin A Antibody

Detection of Human Cystatin A by Western Blot.

Western Blot shows lysates of THP‑1 human acute monocytic leukemia cell line. PVDF membrane was probed with 2 µg/ml of Goat Anti-Human Cystatin A Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1407) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for Cystatin A at approximately 11 kDa (as indicated). This experiment was conducted under reducing conditions and using Western Blot Buffer Group 1.

Detection of Cystatin A by Flow Cytometry

Detection of Cystatin A by Flow Cytometry

Expression of CD163 and CD169 in PRRSV-infected cells. Freshly isolated cells were infected with the PRRSV isolate RFLP-144 at an MOI of 2. At 24 hpi, cells were stained with antibodies against CD163, CD169, and PRRSV-N protein and analyzed by flow cytometry. Cells were first gated for PRRSV+ populations and subsequently analyzed for CD163 and CD169 expression within the PRRSV+ population. (A) Representative gating strategy. (B) Percentage of different cell populations within the PRRSV+ cells. (C) MFI of PRRSV-N protein expression in different cell populations. Experiments were performed using cells from three different pigs. ** p ≤ 0.01. Image collected and cropped by CiteAb from the following open publication (https://www.frontiersin.org/articles/10.3389/fmicb.2024.1505900/full), licensed under a CC-BY license. Not internally tested by R&D Systems.

Applications for Human Cystatin A Antibody

Application
Recommended Usage

Immunoprecipitation

25 µg/mL
Sample: Conditioned cell culture medium spiked with Recombinant Human Cystatin A (Catalog # 1407-PI), see our available Western blot detection antibodies

Western Blot

2 µg/mL
Sample: THP-1 human acute monocytic leukemia cell line

Formulation, Preparation, and Storage

Purification

Antigen Affinity-purified

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.


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Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. See Certificate of Analysis for details.
*Small pack size (-SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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.

Calculators

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.

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Background: Cystatin A

Cystatin A, also called stefin A, Cystatin AS or keratolinin, is a member of family 1 of the cystatin superfamily (1, 2). Like Cystatin B, it is an intracellular inhibitor regulating the activities of cysteine proteases of the papain family such as cathepsins B, H and L (3). For example, immunohistochemical analysis of Cystatin A and cathepsin L is a useful indicator for malignancy in human epidermal keratinocytes (4). The ratio of cathepsin B and Cystatin A can be used in the differential diagnosis and treatment of patients with prostate carcinoma (5). The human Cystatin A consists of 98 amino acids (1).

References

  1. Kartasova, T. et al. (1987) Nucleic Acids Res. 15:5945.
  2. Abrahamson, M. (1994) Methods Enzymol. 244:685.
  3. Jenko, S. et al. (2003) J. Mol. Biol. 326:875.
  4. Palungwachira, P. et al. (2002) J. Dermatol. 29:573.
  5. Sinha, A.A. et al. (2002) Cancer 94:3141.

Alternate Names

AREI, CSTA, Stefin A, STF1, STFA

Entrez Gene IDs

1475 (Human)

Gene Symbol

CSTA

UniProt

Additional Cystatin A Products

Product Documents for Human Cystatin A Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot or batch number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human Cystatin A Antibody

For research use only

Related Research Areas

Citations for Human Cystatin A Antibody

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