Measured by its ability to inhibit BMP-4-induced activity in MC3T3‑E1 mouse preosteoblast cells. The ED50 for this effect is 0.6-3 µg/mL in the presence of 50 ng/mL of Recombinant Human BMP‑4 (Catalog # 314-BP).
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<0.01 EU per 1 μg of the protein by the LAL method.
Applications/Dilutions
Dilutions
Bioactivity
Theoretical MW
17.3 kDa (monomer). 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.
Publications
Read Publication using 3356-CC 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 Acetonitrile and TFA with BSA as a carrier protein.
Purity
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile 4 mM HCl containing at least 0.1% human or bovine serum albumin.
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Mouse COCO Protein
CER2CRL2
Cerberus 2
Cerberus like-2
cerberus-like 2
Cerberus-like protein 2
CERL2
cerl-2
CKTSF1B3
CKTSF1B3MGC126849
COCO
Cysteine knot superfamily 1, BMP antagonist 3
DAN domain family member 5
DAN domain family, member 5
DAND5
Dante
DTE
FLJ38607
GREM3
GREM3cerberus 2
gremlin-3
SP1
Background
COCO, also known as DAND5, Dante, and CKTSF1B3, is a member of the DAN domain family of BMP antagonists that includes DAN (DAND1), Gremlin/Drm (DAND2), PRDC (Protein Related to Dan and Cerberus; DAND3), and Cerberus (DAND4). DAN family members contain a cysteine knot domain that is homologous to that found in other TGF-beta superfamily ligands such as BMPs that play important roles in tissue morphogenesis and developmental processes (1-6). The mouse COCO cDNA encodes a 185 amino acid (aa) precursor with a 23 aa signal sequence (7, 8). COCO has eight Cys residues in the cysteine knot which places it in the CAN (or eight-membered ring) subfamily of BMP antagonists along with the other DAN family proteins (1). Mature mouse COCO shares 62% and 27% aa sequence identity with human and Xenopus COCO, respectively. It shares 22%-27% aa sequence identity with mouse DAN, Gremlin, PRDC, and Cerberus. In Xenopus embryos, COCO is expressed by pluripotent ectodermal cells. Expression is abruptly downregulated prior to gastrulation, and the loss of ectodermal cell pluripotency is coincident with COCO downregulation (7). COCO is required for Xenopus left-right axis formation (9). It functions predominantly on the right side of the embryo, although it is equally expressed on both left and right sides (9). COCO binds and inhibits activin, BMP-4, GDF-3/derrière, Wnt8, and Xnr1 (7, 9). In mouse, COCO expression is elevated on the right side of Henson’s node at the early somite stage, in contrast to the left side expression of Nodal (8).
Avsian-Kretchmer, O. and A.J.W. Hsueh (2004) Mol. Endocrinol. 18:1.
Katoh, M. and M. Katoh (2004) Oncol. Rep. 12:423.
Katoh, M. and M. Katoh (2005) Int. J. Mol. Med. 15:885.
Baron, M.H. (2005) Exp. Hematol. 33:1015.
Kishigami, S. and Y. Mishina (2005) Cytokine Growth Factor Rev. 16:265.
De Robertis, E.M. and H. Koruda (2004) Annu. Rev. Cell Dev. Biol. 20:285.
Bell, E. et al. (2003) Development 130:1381.
Pearce, J.J. et al. (1999) Dev. Biol. 209:98.
Vonica, A. and A.H. Brivanlou (2007) Dev. Biol. 303:281.
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