Human SOST/Sclerostin Antibody

Catalog # Availability Size / Price Qty
Detection of Human SOST/Sclerostin by Western Blot.
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Product Details
Citations (1)
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Human SOST/Sclerostin Antibody Summary

Species Reactivity
Detects human SOST in direct ELISAs and Western blots. In direct ELISAs, approximately 15% cross‑reactivity with recombinant mouse SOST is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant human SOST
Accession # Q9BQB4
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.


Recommended Concentration
Western Blot
2 µg/mL
See below

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.

Scientific Data

Western Blot Detection of Human SOST/Sclerostin antibody by Western Blot. View Larger

Detection of Human SOST/Sclerostin by Western Blot. Western blot shows lysates of human cartilage tissue and human bone marrow. PVDF membrane was probed with 2 µg/mL of Goat Anti-Human SOST/Sclerostin Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1406) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for SOST/Sclerostin at approximately 28 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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: SOST/Sclerostin

SOST, also known as sclerostin, is a member of the cerberus/DAN family, a group of secreted glycoproteins characterized by a cysteine-knot motif. Cerberus/DAN family members are putative BMP antagonists, and include Dan, Cerberus, Gremlin, PRDC, and Caronte. While the overall sequence identity between members of the family is low, they have conserved spacing of six cysteine residues. Cerberus and dan have an additional cysteine residue used for dimerization; however, SOST does not and is secreted as a monomer. SOST was originally identified as an important regulator of bone homesotasis. Positional cloning studies identified that mutations in the SOST gene can cause sclerosteosis and van Buchem disease, bone dysplasia disorders characterized by progressive skeletal overgrowth. Significant levels of SOST expression are detected in bone, cartilage, kidney, and liver. SOST is expressed by osteoclasts in developing bones of mouse embryos, including both intramembranously forming skull bones and endochondrally forming long bones. SOST plays a physiological role as a negative regulator of bone formation by repressing BMP-induced osteogenesis. SOST has been shown to have unique ligand specificity, binding BMP-5, -6, and -7 with high affinity and BMP-2 and -4 with low affinity. This seems to be the first example of a BMP antagonist being localized to osteoclasts, cells derived from the hematopoietic lineage, that function to degrade bone matrix. Human and mouse SOST share 88% amino acid identity (1-3).

  1. Kusu, N. et al. (2003) J. Biol. Chem. 278:24113.
  2. Balemans, W. et al. (2001) Hum. Mol. Genet. 10:537.
  3. Brunkow, M.E. et al. (2001) Am. J. Hum. Genet. 68:577.
Entrez Gene IDs
50964 (Human); 74499 (Mouse)
Alternate Names
sclerostin; SOST; VBCHsclerosteosis

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Citation for Human SOST/Sclerostin 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.

1 Citation: Showing 1 - 1

  1. Negative Association Between Sclerostin and INSL3 in Isolated Human Osteocytes and in Klinefelter Syndrome: New Hints for Testis-Bone Crosstalk
    Authors: A Di Nisio, L De Toni, MS Rocca, M Ghezzi, R Selice, G Taglialavo, A Ferlin, C Foresta
    J. Clin. Endocrinol. Metab., 2018;0(0):.
    Species: Human
    Sample Types: Cell Lysates
    Applications: Western Blot


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