Key Product Details

Species Reactivity

Human

Applications

Western Blot, Neutralization

Label

Unconjugated

Antibody Source

Polyclonal Goat IgG

View all Cystatin D Antibodies »

Product Specifications

Immunogen

Mouse myeloma cell line NS0-derived recombinant human Cystatin D
Thr29-Val142
Accession # CAA49838

Specificity

Detects human Cystatin D in direct ELISAs and Western blots. In direct ELISAs and Western blots, approximately 10% cross-reactivity with recombinant human (rh) Cystatin C, rhCystatin SN, and rhCystatin S is observed and less than 1% cross-reactivity with rhCystatin E/M and rhFetuin A is observed.

Clonality

Polyclonal

Host

Goat

Isotype

IgG

Applications for Human Cystatin D Antibody

Application
Recommended Usage

Western Blot

0.1 µg/mL
Sample: Recombinant Human Cystatin D (Catalog # 1202-PI)

Neutralization

Measured by its ability to neutralize Recombinant Human Cystatin D (1 µg/mL, Catalog # 1202-PI) inhibition of Papain (0.1 µg/mL) cleavage of the fluorogenic peptide substrate Z-FR-Amc(100 µM, Catalog # ES009). The Neutralization Dose (ND50) is typically 13 µg/mL.

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.

Reconstitution Buffer Available:
Size / Price
Qty

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *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.

Background: Cystatin D

Cystatin D is a member of family 2 of the cystatin superfamily (1). In contrast to other members of family 2, Cystatin D has restricted tissue distribution and has been found only in saliva and tears. Two allelic variants (Arg46 and Cys46) are known in the human protein and they are not significantly different in their inhibitory activity against papain and cathepsins B, H, L and S (2). The functions of Cystatin D are largely unknown. However, Cystatin D has been shown to inhibit coronavirus replication at its physiological concentration (0.12‑1.9 μM) and has been suggested to play a protective role against proteases present in the oral cavity (3).

References

  1. Freije, J.P. et al. (1993) J. Biol. Chem. 268:15737.
  2. Balbin, M. et al. (1994) J. Biol. Chem. 269:23156.
  3. Collins, A.R. and A. Grubb (1998) Oral Microbiol. Immunol. 13:59.

Alternate Names

CST5, CSTD

Entrez Gene IDs

1473 (Human)

Gene Symbol

CST5

UniProt

CAA49838

Additional Cystatin D Products

Product Documents for Human Cystatin D Antibody

Product Datasheets

Certificate of Analysis

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

Note: Certificate of Analysis not available for kit components.

Download SDS

Product Specific Notices for Human Cystatin D Antibody

For research use only

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