Recombinant Mouse Noggin (SYM1)

Noggin, also called SYM1, is a secreted glycoprotein and belongs to a group of diffusible proteins which bind to ligands of the TGF-β family. Noggin has a complex pattern of expression during embryogenesis and is expressed in the central nervous system, as well as in several peripheral tissues such as lung, skeletal muscle and skin in adult (1-2). It was originally identified as a BMP-4 antagonist whose action is critical for proper formation of the head and other dorsal structures. Consequently, Noggin has been shown to modulate the activities of other BMPs, as well as, chordin and follistatin (3). Noggin plays a crucial role in bone development, joint formation, and neural tube fusion and can be used as a tool to differentiate human embryonic stem cells into neural precursor cells. Targeted deletion of Noggin in mice results in prenatal death and recessive phenotype displaying a severely malformed skeletal system (4). Conversely, transgenic mice over-expressing Noggin in mature osteoblasts display impaired osteoblastic differentiation, reduced bone formation, and severe osteoporosis.

The biological activity of Mouse Noggin was determined by by its ability to inhibit rhBMP-4 induced alkaline phosphatase production by ATDC5 cells. The expected ED₅₀ for this effect is typically 0.06 - 0.3 μg/ml in the presence of 75 ng/ml of rhBMP-4.

Histidine Tag

l raapaggqhy lhirpapsdn lplvdliehp dpifdpkekd lnetllrsll gghydpgfma tsppedrpgg gggpaggaed laeldqllrq rpsgampsei kglefsegla qgkkqrlskk lrrklqmwlw sqtfcpvlya wndlgsrfwp ryvkvgscfs krscsvpegm vckpsksvhl tvlrwrcqrr ggqrcgwipi qypiiseckc sciegrgggs gggsgggshh hhhhhhhh

Leu20

Lyophilized

The predicted molecular weight of Recombinant Mouse Nog is Mr 26 kDa. However, the actual molecular weight as observed by migration on SDS-PAGE is Mr 30 - 35 kDa.

26

This recombinant protein was 0.2 µm filtered and lyophilized from modified Dulbecco’s phosphate buffered saline (1X PBS) pH 7.2 – 7.3 with no calcium, magnesium, or preservatives.

This lyophilized protein is stable for six to twelve months when stored desiccated at -20°C to -70°C. After aseptic reconstitution, this protein may be stored at 2°C to 8°C for one month or at -20°C to -70°C in a manual defrost freezer. Avoid Repeated Freeze Thaw Cycles. See Product Insert for exact lot specific storage instructions.

Next Day Ambient

1. Valenzuela, DM. et al. (1995) J. Neurosci. 15:6077
2. Brunet, LJ. et al. (1998) Science 280:1455
3. Nifuji, A. et al. (1999) J. Bone Mineral Res. 14:2057
4. Stottmann, RW. et al. (2006) Dev. Biol. 295:647