EphA2 active protein

EphA2 Protein, Human, Recombinant (His Tag)

Cat. Num. AAA8121588

• Gene Names: EPHA2; ECK; CTPA; ARCC2; CTPP1; CTRCT6
• Purity: >95% as determined by SDS-PAGE
• Synonyms: EphA2; EphA2 Protein; Human; Recombinant (His Tag); Human EphA2 Protein (His Tag); ARCC2 Protein; CTPA Protein; CTPP1 Protein; CTRCT6 Protein; ECK Protein; EPH receptor A2; EphA2 active protein

• Host: HEK293 Cells
• Purity/Purification: >95% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile 20mM Tris, 150mM NaCl, pH7.5. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Met1-Asn534

• Species: Human
• Endotoxin: <1.0EU per ug of the protein as determined by the LAL method
• Predicted N Terminal: Ala 24
• Tag: C-His
• Protein Construction: A DNA sequence encoding the human EPHA2 (P29317)(Met1-Asn534) was expressed with a polyhistidine tag at the C-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Activity: Measured by its binding ability in a functional ELISA. Immobilized Human EphA2 His at 2ug/ml (100uL/well) can bind Human Ephrin-A1 His & hFc. The EC50 of Human Ephrin-A1 His & hFc is 4.0-20.0ng/mL.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

SDS-Page

Testing Data

(Measured by its binding ability in a functional ELISA. Immobilized Human EphA2 His at 2 ug/ml (100 ul/well) can bind Human Ephrin-A1 His & hFc, the EC50 of Human Ephrin-A1 His & hFc is 4.0-20.0 ng/mL.)

Related Product Information for EphA2 active protein

Background: Eph receptor A2 (Ephrin type-A receptor 2 or EphA2) is a member of the ephrin receptor subfamily of the protein-tyrosine kinase family. The Eph receptors' corresponding family of ligands are the ephrins anchored to cell surfaces. The ephrins and Eph receptors are implicated as positional labels that may guide the development of neural topographic maps. They have also been found implicated in embryonic patterning, neuronal targeting, vascular development and adult neovascularization. The large family of ligands and receptors may make a major contribution to the accurate spatial patterning of connections and cell position in the nervous system. Furthermore, elevated expression of Eph receptors and ephrin ligands is associated with tumors and associated tumor vasculature, suggesting the Eph receptors and ephrin ligands also play critical roles in tumor angiogenesis and tumor growth. Unlike most Eph kinases, which are primarily expressed during development, EphA2 is primarily found in adult human epithelial cells. The cellular functions of EphA2 may be regulating cell growth, survival, migration, and angiogenesis.Unlike other receptor tyrosine kinases, ligand binding is not necessary for EphA2. Rather, the ligand appears to regulate EphA2 subcellular localization and its interactions with downstream adapter and signaling proteins. Eph receptor A2(EphA2) has been demonstrated to critically regulate tumor cell growth, migration and invasiveness. Eph receptor A2(EphA2) is frequently overexpressed and functionally altered in aggressive tumor cells, and that these changes promote metastatic character.

Product Categories/Family for EphA2 active protein

Actin Dynamics Signaling Pathway

References

Flanagan JG, et al. (1998) The ephrins and Eph receptors in neural development. Annu Rev Neurosci. 21: 309-45.Cheng N, et al. (2002) The ephrins and Eph receptors in angiogenesis. Cytokine Growth Factor Rev. 13(1): 75-85.Pratt RL, et al. (2002) Activation of the EphA2 tyrosine kinase stimulates the MAP/ERK kinase signaling cascade. Oncogene. 21(50): 7690-9.Jennifer Walker-Daniels, et al. (2003) Differential Regulation of EphA2 in Normal and Malignant Cells. Am J Pathol. 162(4): 1037-1042.

NCBI and Uniprot Product Information

• NCBI GI #: 32967311
• NCBI GeneID: 1969
• NCBI Accession #: NP_004422.2
• NCBI GenBank Nucleotide #: NM_004431.3
• UniProt Accession #: P29317; Q8N3Z2
• Molecular Weight: 108,266 Da
• NCBI Official Full Name: ephrin type-A receptor 2
• NCBI Official Synonym Full Names: EPH receptor A2
• NCBI Official Symbol: EPHA2
• NCBI Official Synonym Symbols: ECK; CTPA; ARCC2; CTPP1; CTRCT6
• NCBI Protein Information: ephrin type-A receptor 2; soluble EPHA2 variant 1; tyrosine-protein kinase receptor ECK; epithelial cell receptor protein tyrosine kinase
• UniProt Protein Name: Ephrin type-A receptor 2
• Protein Family: Ephrin type-A receptor
• UniProt Gene Name: EPHA2
• UniProt Synonym Gene Names: ECK
• UniProt Entry Name: EPHA2_HUMAN

NCBI Description

This gene belongs to the ephrin receptor subfamily of the protein-tyrosine kinase family. EPH and EPH-related receptors have been implicated in mediating developmental events, particularly in the nervous system. Receptors in the EPH subfamily typically have a single kinase domain and an extracellular region containing a Cys-rich domain and 2 fibronectin type III repeats. The ephrin receptors are divided into 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. This gene encodes a protein that binds ephrin-A ligands. Mutations in this gene are the cause of certain genetically-related cataract disorders.[provided by RefSeq, May 2010]

Uniprot Description

EphA2: a receptor tyrosine kinase. Receptor for members of the ephrin-A family. Binds to ephrin-A1, -A3, -A4 AND -A5. The Eph receptor tyrosine kinase family, the largest in the tyrosine kinase group, has fourteen members. They bind membrane-anchored ligands, ephrins, at sites of cell-cell contact, regulating the repulsion and adhesion of cells that underlie the establishment, maintenance, and remodeling of patterns of cellular organization. Eph signals are particularly important in regulating cell adhesion and cell migration during development, axon guidance, homeostasis and disease. EphA receptors bind to GPI-anchored ephrin-A ligands, while EphB receptors bind to ephrin-B proteins that have a transmembrane and cytoplasmic domain. Interactions between EphB receptor kinases and ephrin-B proteins transduce signals bidirectionally, signaling to both interacting cell types. Eph receptors and ephrins also regulate the adhesion of endothelial cells and are required for the remodeling of blood vessels. Overexpressed in many cancers including aggressive ovarian, cervical and breast carcinomas, and lung cancer. Expression correlates with degree of angiogenesis, metastasis and xenograft tumor growth. Soluble receptor inhibits tumor growth and angiogenesis in mice.

Protein type: Kinase, protein; Membrane protein, integral; EC 2.7.10.1; Protein kinase, tyrosine (receptor); Protein kinase, TK; TK group; Eph family

Chromosomal Location of Human Ortholog: 1p36

Cellular Component: cell surface; focal adhesion; integral to plasma membrane; plasma membrane

Molecular Function: protein binding; ephrin receptor activity; transmembrane receptor protein tyrosine kinase activity; ATP binding

Biological Process: neural tube development; axon guidance; peptidyl-tyrosine phosphorylation; viral reproduction; multicellular organismal development; notochord formation; osteoclast differentiation; bone remodeling; regulation of blood vessel endothelial cell migration; regulation of cell adhesion mediated by integrin; protein kinase B signaling cascade; ephrin receptor signaling pathway; angiogenesis; cell adhesion; vasculogenesis; skeletal development; axial mesoderm formation; cell migration; negative regulation of protein kinase B signaling cascade; mammary gland epithelial cell proliferation; regulation of angiogenesis; keratinocyte differentiation; osteoblast differentiation; DNA damage response, signal transduction resulting in induction of apoptosis; notochord cell development

Disease: Cataract 6, Multiple Types