Recombinant Human Ephrin-A5(EFNA5) (Active)

In Stock
Code CSB-MP007464HU
Size US$298Purchase it in Cusabio online store
(only available for customers from the US)
  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.

  • Activity
    Measured by its binding ability in a functional ELISA. Immobilized EPHA3(CSB-MP007723HU) at 2 μg/ml can bind human EFNA5, the EC50 of human EFNA5 protein is 0.8674-1.119 ng/ml.

    Biological Activity Assay

  • Activity
    Human EPHA3 protein his tag (CSB-MP007723HU) captured on COOH chip can bind Human EFNA5 protein Fc tag (CSB-MP007464HU) with an affinity constant of 13.8 nM as detected by LSPR Assay.

    Biological Activity Assay
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Product Details


This Recombinant Human Ephrin-A5 (EFNA5) is expressed at the full length of the mature protein in mammalian cells, which corresponds to the 21-203aa region of human EFNA5. The protein has a TEV-linker and an immunoglobulin Fc domain fused on the C-terminus, with a molecular weight of 50.1 kDa. This protein product has a purity higher than 93%, as determined by SDS-PAGE. In the LSPR assay, it has an affinity constant of 13.8 nM against human EPHA3 protein. Also, the recombinant EFNA5 has an EC50 of 0.8674-1.119 ng/ml for binding to EPHA3, as determined by ELISA binding assay. The final product contains low endotoxin, with less than 1.0 EU/µg as determined by the LAL method. The EFNA5 is a promiscuous cell surface GPI-bound ligand that permits the cellular adhesion and contact-dependent directional signaling. The function of EFNA5 is vital for the nervous system development via axion fasciculation and the reorganization of the cytoskeleton. This product can be used in cancer research as cell adhesion reagent, ELISA reagent, and control for novel ligands for the associated ephrin receptor.

Purity Greater than 93% as determined by SDS-PAGE.
Endotoxin Less than 1.0 EU/ug as determined by LAL method.
Activity ①Measured by its binding ability in a functional ELISA. Immobilized EPHA3(CSB-MP007723HU) at 2 μg/ml can bind human EFNA5, the EC50 of human EFNA5 protein is 0.8674-1.119 ng/ml. ②Human EPHA3 protein his tag (CSB-MP007723HU) captured on COOH chip can bind Human EFNA5 protein Fc tag (CSB-MP007464HU) with an affinity constant of 13.8 nM as detected by LSPR Assay.
Target Names EFNA5
Uniprot No. P52803
Research Area Cancer
Alternative Names EPLG7; AF1; AL 1; AL-1; EFL5; Efna5; EFNA5_HUMAN; EPH-related receptor tyrosine kinase ligand 7; Ephrin A5; Ephrin-A5; EPLG7; GLC1M; LERK-7; LERK7; RAGS
Molecular Characterization
Species Homo sapiens (Human)
Source Mammalian cell
Expression Region 21-203aa
Mol. Weight 50.1 kDa
Protein Length Full Length of Mature Protein
Tag Info C-terminal hFc-tagged
Form Liquid or Lyophilized powder
Buffer Lyophilized from a 0.2 μm filtered PBS, 6% Trehalose, pH 7.4
and FAQs
Protein FAQs
Storage Condition Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA Please contact us to get it.

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Target Background

Cell surface GPI-bound ligand for Eph receptors, a family of receptor tyrosine kinases which are crucial for migration, repulsion and adhesion during neuronal, vascular and epithelial development. Binds promiscuously Eph receptors residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor is referred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Induces compartmentalized signaling within a caveolae-like membrane microdomain when bound to the extracellular domain of its cognate receptor. This signaling event requires the activity of the Fyn tyrosine kinase. Activates the EPHA3 receptor to regulate cell-cell adhesion and cytoskeletal organization. With the receptor EPHA2 may regulate lens fiber cells shape and interactions and be important for lens transparency maintenance. May function actively to stimulate axon fasciculation. The interaction of EFNA5 with EPHA5 also mediates communication between pancreatic islet cells to regulate glucose-stimulated insulin secretion. Cognate/functional ligand for EPHA7, their interaction regulates brain development modulating cell-cell adhesion and repulsion.
Gene References into Functions
  1. These results indicate a novel mechanism of ephrin-Eph signaling independent of direct cell contact and proteolytic cleavage and suggest the participation of EphB2(+) extracellular vesicles in neural development and synapse physiology. PMID: 27354374
  2. MiR-96 and miR-182 are upregulated in hepatocellular carcinoma and negatively associated with ephrin A5 expression. PMID: 25663355
  3. the structure of the ligand-binding domain of the EphA3 receptor in complex with its preferred ligand, ephrin-A5, is reported. PMID: 25993310
  4. The genetic variations c.668C>T (rs201008479), c.102C>T (rs199980747) and c.-27C>G (rs200187971) may present an additional genetic risk factor for age-related cataract in the Chinese population. PMID: 25300504
  5. Data indicate that ephrin-A5 binding directly facilitates the formation of Eph/ephrin clusters by inducing conformational changes in the ligand-binding domain (LBD) of EphA4. PMID: 23959867
  6. Transgenic ephrin-A5 plays a critical role in postnatal lens fiber organization to maintain lens transparency: cells in the ephrin-A5-deficient lens are severely disorganized PMID: 23401654
  7. EphrinA5, especially ephrinA5S, acts as a tumor suppressor in hepatocarcinogenesis. PMID: 22860012
  8. This study presented that EFNA5 showed strong associations with alcohol withdrawal symptoms. PMID: 22072270
  9. Data suggest that ephrinA5 mRNA/protein levels are reduced in colon adenocarcinoma compared to normal colon tissue; staging/grading indicates that ephrinA5 inhibits colon adenocarcinoma progression via c-Cbl-mediated EGFR ubiquitination/degradation. PMID: 22074469
  10. ephrin-A5-induced cell-morphologic changes of EphA3-positive LK63 pre-B acute lymphoblastic leukemia cells PMID: 18385452
  11. These observations indicate that only a subset of signal transduction pathways is required for ephrin-A5-induced growth cone collapse. PMID: 18563700
  12. ephrinA5 acted as a tumor suppressor in glioma, and its negative regulation of EGFR contributed to the suppressive effects. PMID: 19270726
  13. EFNA5 down-regulation is a consistent finding in chondrosarcomas PMID: 19695673

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Subcellular Location Cell membrane; Lipid-anchor, GPI-anchor. Membrane, caveola; Lipid-anchor, GPI-anchor. Note=Compartmentalized in discrete caveolae-like membrane microdomains.
Protein Families Ephrin family
Database Links

HGNC: 3225

OMIM: 601535

KEGG: hsa:1946

STRING: 9606.ENSP00000328777

UniGene: Hs.288741


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