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).
Human Cystatin A Antibody
R&D Systems | Catalog # AF1407
Scientific images may be resized, cropped, or adjusted for brightness or contrast for presentation purposes. These updates are limited to presentation and do not affect the underlying scientific interpretation of the data. Where available, additional source data may be provided upon request.
Key Product Details
Species Reactivity
Applications
Label
Antibody Source
Product Specifications
Immunogen
Ile2-Phe98
Accession # P01040
Specificity
Clonality
Host
Isotype
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
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
Immunoprecipitation
Sample: Conditioned cell culture medium spiked with Recombinant Human Cystatin A (Catalog # 1407-PI), see our available Western blot detection antibodies
Western Blot
Sample: THP-1 human acute monocytic leukemia cell line
Formulation, Preparation, and Storage
Purification
Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
Formulation
Shipping
Stability & Storage
- 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
Background: Cystatin A
References
- Kartasova, T. et al. (1987) Nucleic Acids Res. 15:5945.
- Abrahamson, M. (1994) Methods Enzymol. 244:685.
- Jenko, S. et al. (2003) J. Mol. Biol. 326:875.
- Palungwachira, P. et al. (2002) J. Dermatol. 29:573.
- Sinha, A.A. et al. (2002) Cancer 94:3141.
Alternate Names
Entrez Gene IDs
Gene Symbol
UniProt
Additional Cystatin A Products
Product Documents for Human Cystatin A Antibody
Certificate of Analysis
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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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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Cellular Response to Hypoxia Protocols
- Immunoprecipitation Protocol
- R&D Systems Quality Control Western Blot Protocol
- Troubleshooting Guide: Western Blot Figures
- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
- View all Protocols, Troubleshooting, Illustrated assays and Webinars