| 货号 | MAB20681-SP |
| 别名 | CD108 antigen; CD108; CD108MGC126696; CDw108; H-SEMA-K1; H-Sema-L; JMH blood group antigen; JMH; John-Milton-Hargen human blood group Ag; MGC126692; sema domain, immunoglobulin domain (Ig), and GPI membrane anchor, (semaphorin)7A (JMH blood group); sema domain, immunoglobulin domain (Ig), and GPI membrane anchor, (semaphorin)7A; sema domain, immunoglobulin domain (Ig), and GPI membrane anchor, 7A; Sema K1; Sema L; Sema7A; SEMAK1; SEMAL; SEMALJohn Milton Hagen blood group H-Sema K1; semaphorin 7A, GPI membrane anchor (John Milton Hagen blood group); semaphorin K1; semaphorin L; semaphorin-7A; semaphorin-K1; semaphorin-L |
| 反应种属 | Human |
| 应用 | Flow Cytometry(2.5 µg/106cells) |
| 目标/特异性 | Detects human Semaphorin 7A in direct ELISAs. |
| 使用方法 | Flow Cytometry: 2.5 µg/106cells |
| 来源 | Reconstitute at 0.5 mg/mL in sterile PBS. |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 8482 (Human); 20361 (Mouse) |
| 纯化方式 | Protein A or G purified from hybridoma culture supernatant |
| 免疫原 | Mouse myeloma cell line NS0-derived recombinant human Semaphorin 7A His47-Ala648 Accession # O75326 |
| 生物活性 | Human |
| 标记 | Unconjugated |
| 溶解方法 | Reconstitute at 0.5 mg/mL in sterile PBS. |
| 背景 | Semaphorin 7A (Sema7A, designated CD108, previously Sema K1 or Sema L), is an ~80 kDa membrane-anchored glycoprotein that is a member of the Semaphorin family of axon guidance molecules (1‑4). On human erythrocytes, it is the John Milton Hagen (JMH) blood group antigen (4). Sema7A is the only known Class 7 or glycophosphatidylinositol (GPI)-linked semaphorin; its expression is concentrated in the brain, spleen and thymus (1‑5). Human Sema7A cDNA encodes a 44 amino acid (aa) signal sequence, a 604 aa extracellular domain (ECD) including Sema and C2‑type Ig-like domains, and an 18 aa propeptide/GPI membrane anchor signal sequence. Mature human Sema7A shares 89%, 89%, 88%, 86% and 90% aa identity with mouse, rat, canine, bovine and equine Sema7A, respectively. The Sema7A sema domain contains an RGD integrin interaction motif (4). Although it binds plexin-C1 in vitro and may be coexpressed with it, many of its activities depend on interaction with beta 1 integrins such as alpha 1 beta 1 (6‑10). Sema7A signaling through the two receptors may cause opposing effects (8). Sema7A is an immune semaphorin, with expression and activity on CD4+CD8+ thymocytes, activated T cells, macrophages and microglia (2, 9‑12). T cell Sema7A interacts with monocytic cells, stimulating their chemotaxis, production of pro-inflammatory cytokines, and dendritic differentiation (5, 6). However, on the T cells themselves, Sema7A downregulates TCR signaling by promoting TCR internalization, modulating T cell responses (9). In lung macrophages, Sema7A is induced by TGF-beta and participates in TGF-beta -induced lung fibrosis (12). Sema7A is also expressed on pre-osteoblasts and osteoclasts, where it promotes migration and fusion, respectively; on keratinocytes, where it promotes melanocyte spreading and dendricity; and on some neurons, for example, promoting axon outgrowth in the developing olfactory tract (8, 10, 13). |
| 运输条件 | Blue Ice |
| 存放说明 | 4℃ |
| 参考文献 |
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