Human/Rat Cystatin B Antibody Summary
Accession # P04080
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.
Detection of Human and Rat Cystatin B by Western Blot. Western blot shows lysates of human colon tissue, PC-12 rat adrenal pheochromocytoma cell line, A549 human lung carcinoma cell line, and SK-BR-3 human breast cancer cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human/Rat Cystatin B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1408) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for Cystatin B at approximately 11 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Detection of Human Cystatin B by Simple WesternTM. Simple Western lane view shows lysates of A549 human lung carcinoma cell line, loaded at 0.2 mg/mL. A specific band was detected for Cystatin B at approximately 18 kDa (as indicated) using 10 µg/mL of Goat Anti-Human/Rat Cystatin B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1408) followed by 1:50 dilution of HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF109). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.
Western Blot Shows Human Cystatin B Specificity by Using Knockout Cell Line. Western blot shows lysates of HEK293T human embryonic kidney parental cell line and Cystatin B knockout HEK293T cell line (KO). PVDF membrane was probed with 1 µg/mL of Goat Anti-Human/Rat Cystatin B Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1408) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for Cystatin B at approximately 12 kDa (as indicated) in the parental HEK293T cell line, but is not detectable in knockout HEK293T cell line. GAPDH (Catalog # AF5718) is shown as a loading control. This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Preparation and 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.
Background: Cystatin B
Cystatin B, also called stefin B or liver thiol proteinase inhibitor, is a member of family 1 of the cystatin superfamily (1). Like Cystatin A, it is an intracellular inhibitor regulating the activities of cysteine proteases of the papain family such as cathepsins B, H and L (2). Mutations in the Cystatin B gene is the cause of progressive myoclonus epilepsy (EPM1) (3). Because of its expression patterns, Cystatin B can be used as a marker for certain cancers, such as glioblastoma tumors (4). It readily forms amyloid fibrils in vitro (5). The human Cystatin B consists of 98 amino acid residues (3).
- Abrahamson, M. (1994) Methods Enzymol. 244:685.
- Pol, E. and I. Bjork (1999) Biochemistry 38:10519.
- Pennacchio, L.A. et al. (1996) Science 271:1731.
- Zhang, R. et al. (2003) Glia 42:194.
- Zerovnik, E. et al. (2002) Biochim. Biophys. Acta 1594:1.
Citations for Human/Rat Cystatin B Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
Citations: Showing 1 - 2
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Modulation of Receptor Protein Tyrosine Phosphatase Sigma Increases Chondroitin Sulfate Proteoglycan Degradation through Cathepsin B Secretion to Enhance Axon Outgrowth
Authors: AP Tran, S Sundar, M Yu, BT Lang, J Silver
J. Neurosci., 2018;38(23):5399-5414.
Sample Types: Cell Culture Supernates
Applications: Western Blot
Regulation of TGF-beta1-driven differentiation of human lung fibroblasts: emerging roles of cathepsin B and cystatin C.
Authors: Kasabova M, Joulin-Giet A, Lecaille F, Gilmore B, Marchand-Adam S, Saidi A, Lalmanach G
J Biol Chem, 2014;289(23):16239-51.
Sample Types: Cell Lysates
Applications: Western Blot
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