Cystatin S Antibody [Unconjugated]

• Reactivity: Hu
• Applications: WB, IP
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Unconjugated
• Concentration: LYOPH

Cystatin S Antibody [Unconjugated] Summary

• Immunogen: Mouse myeloma cell line NS0-derived recombinant human Cystatin S
  Ser21-Ala141
  Accession # P01036
• Specificity: Detects human Cystatin S in direct ELISAs and Western blots. In direct ELISAs, approximately 30% cross-reactivity with recombinant human (rh) Cystatin SA and rhCystatin SN is observed and 5% cross-reactivity with rhCystatin C and rhCystatin D is observed, and less than 1% cross-reactivity with rhCystatin A, rhCystatin B, rhCystatin E/M, rhFetuin A, and rhFetuin B is observed.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Gene: CST4
• Purity: Immunogen affinity purified
• Purity Statement: Antigen Affinity-purified
• Endotoxin Note: <0.10 EU per 1 μg of the antibody by the LAL method.

Applications/Dilutions

• Dilutions:
  • Western Blot 0.1 ug/mL
  • Immunoprecipitation 25 ug/mL

Packaging, Storage & Formulations

• 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.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
• Preservative: No Preservative
• Concentration: LYOPH
• Purity: Immunogen affinity purified
• Reconstitution Instructions: Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Cystatin S Antibody [Unconjugated]

• CST4
• cystatin 4
• Cystatin S
• Cystatin-4
• cystatin-S
• cystatin-SA-III
• MGC71923
• Salivary acidic protein 1

Background

Cystatin S is a member of family 2 of the cystatin superfamily (1). Like cystatins SA and SN, it is produced by the salivary gland and secreted largely in the submandibular/sublingual saliva (2). Unlike cystatins SA and SN, Cystatin S is not a potent inhibitor of cysteine proteases such as papain and some cathepsins (3). Cystatin S is partially phosphorylated at Ser21 and Ser23 in saliva (4). The functions of Cystatin S are largely unknown. However, it is able to bind more calcium and bind more rapidly to carbonated apatite than cystatins SA or SN, indicating that Cystatin S may be involved in the mineral balance of the tooth (3).

1. Abrahamson, M. (1994) Methods Enzymol. 244:685.
2. Baron, A.C. et al. (1999) Oral. Dis. 5:344.
3. Baron, A. et al. (1999) Oral Dis. 5:234.
4. Isemura, S. et al. (1991) J. Biochem. 110:648.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Bioinformatics

• Gene Symbol: CST4
• Uniprot:
  • P01036()