Recombinant Human Stanniocalcin 1/STC-1 Protein, CF Summary
Details of Functionality
Measured by its ability to inhibit Wnt-3a-induced alkaline phosphatase production by MC3T3‑E1 mouse preosteoblast cells. The ED50 for this effect is 20-120 ng/mL in the presence of 10 ng/mL of
Recombinant
Mouse Wnt-3a (Catalog # 1324-WN)
.
Source
Mouse myeloma cell line, NS0-derived human Stanniocalcin 1/STC-1 protein Thr18-Ala247, with a C-terminal 6-His tag
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.
Applications/Dilutions
Dilutions
Bioactivity
Theoretical MW
27 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
26-43 kDa, reducing conditions
Publications
Read Publications using 9400-SO in the following applications:
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.
3 months, -20 to -70 °C under sterile conditions after reconstitution.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS.
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Reconstitution Instructions
Reconstitute at 500 μg/mL in PBS.
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Human Stanniocalcin 1/STC-1 Protein, CF
Stanniocalcin 1
stanniocalcin-1
STC1
STC-1
STCSTC-1
Background
Stanniocalcin 1 (STC-1) is a homodimeric glycoprotein hormone that is
involved in calcium and phosphate homeostasis.
It was originally identified in bony fishes, where elevation of calcium
in serum causes the release of STC from the endocrine glands called the corpuscles
of Stannius (1-3). In contrast to fish
where expression is mainly in the corpuscles of Stannius, the STC-1 gene in
mammals is widely expressed in tissues including thyroid, ovary, prostate, adrenal
gland, muscle, intestine, kidney, heart and lung (4). Human STC-1 protein consists of a 16 amino acid (aa)
propeptide region and a 214 aa STC-1 chain.
The amino acid sequence of human mature STC-1 is 36%
identical to that of human STC-2. STC-1 is highly homologous with mouse,
sharing 95% amino acid identity. STC-1 inhibits the
breakdown of PAPP-A (5), protects cancer cells from apoptosis (4), reduces
tumor size of liver cancers (6), promotes osteoblast differentiation (7) and inhibits
longitudinal bone growth directly at the growth plate (8). It is also a
biomarker of brain and lung cancer progression (7, 8).
Yoshiko, Y. and J.E. Aubin. (2004) Peptides 25:1663.
Wendelaar Bonga S.E. and P.K. Pang (1991) Int. Rev. Cytol. 128:139.
Wascher, R.A. et al. (2003) Clin. Cancer Res. 9:1427.
Ohkouchi, S. et al. (2015) Clin. Med. Insights Circ. Respir. Pulm. Med. 9:91.
Kloverpris S, et al. (2015) J Biol Chem. 290:21915.
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