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Recombinant Human Plexin B1 His-tag Protein, CF

Catalog # 10677-PB | R&D Systems, Inc. a Bio-Techne Brand
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Key Product Details

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Product Specifications


Human embryonic kidney cell, HEK293-derived human Plexin B1 protein
Leu20-Gln1490 (RRRR1302-1305AAAA), with a C-terminal 6-His tag


>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis


Predicted Molecular Mass

158 kDa


215-250 kDa, under reducing conditions


Measured by its binding ability in a functional ELISA.
When Recombinant Human Plexin B1 His-Tag protein is coated at 1 µg/mL, Recombinant Human  Semaphorin 4D Fc Chimera (Catalog # 7470-S4) binds with an ED50 of 0.02-0.12 μg/mL.

Scientific Data Images for Recombinant Human Plexin B1 His-tag Protein, CF

Recombinant Human Plexin B1 His-tag Protein Binding Activity

When Recombinant Human Plexin B1 His-Tag (Catalog # 10677-PB) is coated at 1 µg/mL, Recombinant Human Semaphorin 4D Fc Chimera (7470-S4) binds with an ED50 of 0.02-0.12 μg/mL.

Formulation, Preparation and Storage

Formulation Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution Reconstitute at 500 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.
  • 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.

Background: Plexin B1

Plexin B1, also known as SEP, is a type I transmembrane glycoprotein that belongs to the Plexin family of semaphorin receptors. In humans, the Plexin family consists of at least nine members divided into four subfamilies and Plexin signaling is involved in neuronal axon guidance, angiogenesis and immune response (1). Plexins share a common structural architecture: A large extracellular domain (ECD) that binds the semaphorin ligand, a single transmembrane domain and a conserved ~600 amino acid (aa) cytoplasmic region (2, 3). The ECD of mature, human Plexin B1 contains one Semaphorin domain, two plexin-semaphorin-integrin (PSI) domains, and three immunoglobin-plexin-transcription factor (IPT) repeats and shares 82% amino acid sequence identity with the ECD of mouse Plexin B1. Like semaphorins, plexins can be soluble or membrane bound and Plexin B1 can be cleaved into an ~200 kDa, soluble alpha-subunit and an ~100 kDa membrane bound beta-subunit (2). Plexin B1 is a receptor for Semaphorin 4D/CD100 and it can form a receptor complex with Neuropilins, MET, and EGF R2 (4). Plexin B1 is expressed in chick retinal ganglion neurons and hippocampal neurons with a peak during the myelination period (5). Plexin B1 also plays a role in GABAergic development, changes of actin cytoskeleton, axon guidance, cell migration, and invasive growth (6, 7).


  1. Kruger, R.P. et al. (2005) Nat. Rev. Mol. Cell Biol. 6:789.
  2. Artigiani, S. et al. (2003) J. Biol. Chem. 278:10094.
  3. Negishi, M. et al. Cell. Mol. Life Sci. 2005 62:1363.
  4. Franco, M. and Tamagnone, L. (2008) EMBO Rep. 9:865.
  5. Moreau-Fauvarque, C. et al. J. Neurrosci 2003 23:9229.
  6. Swiercz J. et al. J Cell Biol 2004 165(6):869.
  7. Giordano, S. et al. Nat Cell Biol. 2002 4(9):720.

Alternate Names

PLXN5, PLXNB1, Transmembrane Protein SEP

Entrez Gene IDs

5364 (Human); 235611 (Mouse); 316009 (Rat)

Gene Symbol



Product Documents for Recombinant Human Plexin B1 His-tag Protein, CF

Certificate of Analysis

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Product Specific Notices for Recombinant Human Plexin B1 His-tag Protein, CF

For research use only

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