Recombinant Mouse Semaphorin 6C Protein, CF Summary
Optimal concentrations should be determined by each laboratory for each application.
Ala26-Ile602, with a C-terminal 10-His tag
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CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
|Formulation||Lyophilized from a 0.2 μm filtered solution in PBS.|
|Reconstitution||Reconstitute at 200 μg/mL in PBS.|
|Shipping||The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.|
|Stability & Storage:||Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
Background: Semaphorin 6C
Semaphorin 6C (Sema6C; previously Sema Y) is a 120 kDa member of the Semaphorin family of axon guidance molecules (1 - 3). The four known Class 6 semaphorins are type I transmembrane glycoproteins that are most like Class 1 invertebrate semaphorins in structure, and exhibit neuropilin-independent binding to specific plexin A receptors (1 - 3). Amino acid (aa) identity of Class 6 semaphorins is around 40% overall, but 53 - 64% within the Sema domain. Sema6C is expressed developmentally in subregions of the central and peripheral nervous systems, heart, and kidney, and primarily in skeletal muscle in adults (3, 4). Mouse Sema6C cDNA encodes 931 aa, including a 25 aa signal sequence, a 580 aa extracellular domain (ECD) including the Sema domain, a 21 aa transmembrane sequence and a 305 aa cytoplasmic portion. Alternate exon splicing creates a 923 aa short form (Sema6C.3) that is lacking aa 185 - 224 within the Sema domain, but contains 32 unique aa inserted at aa 586; postnatally, this form predominates in muscle (2, 3). The long form predominates in brain, especially in areas of increased plasticity (4). Mouse Sema6C ECD shares 98%, 92%, 92%, 92% and 88% aa identity with corresponding rat, human, porcine, equine and canine sequences, respectively. Sema6C, along with Sema6D, is co-expressed with and binds to Plexin A1 (5). This interaction is thought to guide proprioceptive peripheral neurons by repulsion, excluding them from the superficial dorsal horn of the spinal cord (5). Sema6C is downregulated and redistributed following denervation or axotomy, potentially promoting regrowth (4, 6). In muscle, Sema6C is concentrated at neuromuscular junctions (6).
- Zhou, Y. et al. (2008) Trends Biol. Sci. 33:161.
- Qu, X. et al. (2002) J. Biol. Chem. 277:35574.
- Kikuchi, K. et al. (1999) Mol. Cell. Neurosci. 13:9.
- Burgaya, F. et al. (2006) Mol. Cell. Neurosci. 33:321.
- Yoshida, Y. et al. (2006) Neuron 52:775.
- Svensson, A. et al. (2008) J. Mol. Hist. 39:5.
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