Approximately 46.4 kDa, a disulfide-linked homodimer consisting of two 206 amino acid polypeptide chains.
Biological Activity
Fully biologically active when compared to standard. The ED50 as determined by inhibiting BMP-4-induced alkaline phosphatase production of murine ATDC5 cells is less than 2 ng/ml, corresponding to a specific activity of > 5.0 × 105 IU/mg in the presence of 5 ng/ml BMP-4.
Appearance
Sterile filtered white lyophilized (freeze-dried) powder.
Formulation
Lyophilized from a 0.2 um filtered concentrated solution in 30 % acetonitrile, 0.1 % TFA.
Endotoxin
Less than 1 EU/ug of rMuNoggin as determined by LAL method.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in 10 mM HAc to a concentration less than 0.25 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions.
Stability and 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.- 3 months, -20 to -70 °C under sterile conditions after reconstitution.
References
1. Davis SWandCamper SA. 2007. Dev Biol, 305: 145-60.2. Zhu W, Kim J, Cheng C, et al. 2006. Bone, 39: 61-71.3. Oxley CD, Rashid R, Goudie DR, et al. 2008. Horm Res, 69: 221-6.4. Cooper GM, Usas A, Olshanski A, et al. 2009. Plast Reconstr Surg, 123: 94S-103S.5. Bayramov AV, Eroshkin FM, Martynova NY, et al. 2011. Development, 138: 5345-56.
