Recombinant Human Semaphorin 5A Fc Chimera Protein, CF

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Bioactivity
Format
Carrier-Free

Order Details

Recombinant Human Semaphorin 5A Fc Chimera Protein, CF Summary

Details of Functionality
Measured by its ability to inhibit proliferation of the A549 human lung carcinoma cells. The ED50 for this effect is 100-400 ng/mL.
Source
Mouse myeloma cell line, NS0-derived human Semaphorin 5A protein
Human Semaphorin 5A
(Glu23-Thr765)
Accession # AAC09473
IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Glu23
Structure / Form
Disulfide-linked homodimer
Protein/Peptide Type
Recombinant Proteins
Gene
SEMA5A
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
110 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.
SDS-PAGE
133 kDa, reducing conditions
Publications
Read Publication using
5896-S5 in the following applications:

Packaging, Storage & Formulations

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.
Buffer
Lyophilized from a 0.2 μm filtered solution in PBS, EDTA and Tween® 20.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Reconstitution Instructions
Reconstitute at 100 μg/mL in PBS.

Notes

Tween is a registered trademark of ICI Americas.



This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human Semaphorin 5A Fc Chimera Protein, CF

  • FLJ12815
  • sema domain, seven thrombospondin repeats (type 1 and type 1-like)
  • Sema F
  • SEMA5A
  • SEMAF
  • Semaphorin 5A
  • semaphorin F
  • semaphorin-5A
  • Semaphorin-F
  • semF
  • transmembrane domain (TM) and short cytoplasmic domain, (semaphorin) 5A

Background

Semaphorin 5A (Sema5A, previously called SemaF) is a 140 kDa protein of the semaphorin family of axon guidance molecules (1-4). Class 5 semaphorins are type I transmembrane glycoproteins with an N-terminal Sema domain and multiple juxtamembrane type 1 thrombospondin (TSP) repeats within their extracellular domains (1‑3). Sema5A is expressed developmentally in oligodendrocytes, neuroepithelial cells surrounding retinal axons, the base of limb buds, the cardiac atrial septum and endocardial cushions, and the mesoderm surrounding cranial vessels (4-6). The human Sema5A cDNA encodes a 22 amino acid (aa) signal sequence, a 946 aa extracellular domain (ECD), a 22 aa transmembrane sequence and an 85 aa cytoplasmic portion. Within aa 23 - 765, which includes the sema domain and four of the seven TSP repeats, human Sema5A shares 93% aa identity with corresponding mouse, rat, and canine sequences. Semaphorins typically transduce signals through transmembrane plexins (1, 2). The sema domain of Sema5A binds plexin B3, triggering signaling via HGF R/c-Met (7). Both Sema5A and plexin B3 are expressed postnatally during differentiation and migration of central nervous system oligodendrocytes. However, plexin B3 is not significantly expressed prenatally and therefore unlikely to be the Sema5A receptor during development (7, 8). The Sema5A TSP repeats interact with either heparin sulfate or chondroitin sulfate proteoglycans (HSPG, CSPG) (9). HSPG interaction promotes attraction, while CSPG interaction promotes repulsion and is essential for axon fasciculation, independent of plexin B3 (9, 10). Sema5A mutations have been implicated in the genetic syndrome, cri-du-chat, while some polymorphisms may increase risk for neurodegenerative diseases such as Parkinson’s (3, 11). Sema5A expression may be upregulated in metastatic cancer cells and downregulated in autism (12, 13).

  1. Flannery, E. and M. Duman-Scheel (2009) Curr. Drug Targets 10:611.
  2. Zhou, Y. et al. (2008) Trends Biol. Sci. 33:161.
  3. Simmons, A.D. et al. (1998) Biochem. Biophys. Res. Commun. 242:685.
  4. Oster, S.F. et al. (2003) Development 130:775.
  5. Goldberg, J.L. et al. (2004) J. Neurosci. 24:4989.
  6. Fiore, R. et al. (2005) Mol. Cell. Biol. 25:2310.
  7. Artigiani, S. et al. (2004) EMBO Rep. 5:710.
  8. Worzfeld, T. et al. (2004) Eur. J. Neurosci. 19:2622.
  9. Kantor, D.B. et al. (2004) Neuron 44:961.
  10. Hilario, J.D. et al. (2008) Dev. Biol. 326:190.
  11. Lin, L. et al. (2009) Trends Neurosci. 32:142.
  12. Pan, G-Q. et al. (2009) World J. Gastroenterol. 15:2800.
  13. Melin, M. et al. (2006) Neuropsychobiology 54:64.

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Publications for Semaphorin 5A (5896-S5)(1)

We have publications tested in 1 confirmed species: Human.

We have publications tested in 1 application: Bioassay.


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Bioinformatics

Gene Symbol SEMA5A
Uniprot