|Detection of Mouse Semaphorin 4G by Western Blot. Western blot shows lysates of mouse brain (cortex) tissue. PVDF Membrane was probed with 1 µg/mL of Sheep Anti-Mouse Semaphorin 4G Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6504) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for Semaphorin 4G at approximately 110 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1|
|Semaphorin 4G in Mouse Embryo. Semaphorin 4G was detected in immersion fixed frozen sections of mouse embryo (15 d.p.c.) using Sheep Anti-Mouse Semaphorin 4G Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6504) at 15 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counterstained with hematoxylin (blue). Specific staining was localized to developing brain (cortex) and connective tissue. View our protocol for Chromogenic IHC Staining of Frozen Tissue Sections.|
Semaphorin 4G (Sema4G) is a 92 kDa (predicted), class IV member of the semaphorin family of proteins. It is expressed by select cell types, including oligodendroglia and Purkinje neurons, and likely acts as a chemorepellent by binding to B-type plexins. Mature mouse Sema4G is a type I transmembrane protein that is 820 amino acids (aa) in length. It contains a 656 aa extracellular region (aa 18-673) that is characterized by one Sema domain (aa 35-503), a PSI region (aa 505‑556), and an Ig-like C2-type domain (aa 565-648). The 143 aa cytoplasmic region contains a poly-proline segment and a Ser phosphorylation site. Over aa 18‑673, mouse Sema4G shares 91% and 97% aa identity with human and rat Sema4G, respectively.
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