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EphA7 cell lysate

Mouse EphA7 HEK293 Overexpression Lysate

Gene Names
Epha7; Ebk; Ehk3; Mdk1; Cek11; Hek11
Applications
Western Blot
Synonyms
EphA7; Mouse EphA7 HEK293 Overexpression Lysate; Mouse EphA7/EHK-3 HEK293 Cell Lysate (WB positive control); Eph receptor A7; Mouse Cek11 Overexpression Lysate; Mouse Ebk Overexpression Lysate; Mouse Ehk3 Overexpression Lysate; Mouse Hek11 Overexpression Lysate; Mouse Mdk1 Overexpression Lysate; Mouse RP23-33D17.1 Overexpression Lysate; EphA7 cell lysate
Ordering
For Research Use Only!
Host
HEK293 Cells
Form/Format
1x Sample Buffer (1x modified RIPA buffer+1x SDS loading buffer).
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
Sequence Positions
537aa
Sequence
Met1-Ile556
Applicable Applications for EphA7 cell lysate
Western Blot (WB)
Application Notes
WB: Use at an assay dependent dilution.
Species
Mouse
Recommend Usage
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.2. Re-dissolve the pellet using 200uL pure water and boil for 2-5 min.
Sequence Construction
A DNA sequence encoding the mouse EPHA7 isoform 1 (Q61772-1) extracellular domain (Met 1-Ile 556) was fused with a polyhistidine tag at the C-terminus.
Preparation Method
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors. Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
Preparation and Storage
Store at 4 degree C for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80 degree C for up to twelve months. Avoid repeated freeze-thaw cycles.
Samples are stable for up to twelve months from date of receipt.
Related Product Information for EphA7 cell lysate
Ephrin type-A receptor 7, also known as EphA7, belongs to the ephrin receptor subfamily of the protein-tyrosine kinase family which 16 known receptors (14 found in mammals) are involved: EPHA1, EPHA2, EPHA3, EPHA4, EPHA5, EPHA6, EPHA7, EPHA8, EPHA9, EPHA10, EPHB1, EPHB2, EPHB3, EPHB4, EPHB5, EPHB6. The Eph family of receptor tyrosine kinases (comprising EphA and EphB receptors) has been implicated in synapse formation and the regulation of synaptic function and plasticity6. Eph receptor-mediated signaling, which is triggered by ephrins7, probably modifies the properties of synapses during synaptic activation and remodeling. Ephrin receptors are components of cell signalling pathways involved in animal growth and development, forming the largest sub-family of receptor tyrosine kinases (RTKs). Ligand-mediated activation of Ephs induces various important downstream effects and Eph receptors have been studied for their potential roles in the development of cancer. Down-regulation of EphA7 secondary to hypermethylation has been reported in colorectal cancer. The expression of EphA7 was reduced in all tested gastric cancer cell lines; however, there is marked variability in expression among gastric carcinoma specimens. EphA7 may have roles in the pathogenesis and development of gastric carcinomas.

This Mouse EphA7 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of EphA7 protein from the overexpression lysate was verified.
Product Categories/Family for EphA7 cell lysate
References
Rashid T, et al. (2005) Opposing gradients of ephrin-As and EphA7 in the superior colliculus are essential for topographic mapping in the mammalian visual system. Neuron. 47(1): 57-69.Wang J, et al. (2007) Differential expression of EphA7 receptor tyrosine kinase in gastric carcinoma. Hum Pathol. 38(11): 1649-56.Rogers JH, et al. (1999) Distribution of the receptor EphA7 and its ligands in development of the mouse nervous system. Brain Res Mol Brain Res. 74(1-2): 225-30.

NCBI and Uniprot Product Information

NCBI GI #
NCBI GeneID
NCBI Accession #
NCBI GenBank Nucleotide #
UniProt Accession #
Molecular Weight
111,860 Da
NCBI Official Full Name
ephrin type-A receptor 7 isoform 1
NCBI Official Synonym Full Names
Eph receptor A7
NCBI Official Symbol
Epha7
NCBI Official Synonym Symbols
Ebk; Ehk3; Mdk1; Cek11; Hek11
NCBI Protein Information
ephrin type-A receptor 7; EHK-3; mDK-1; EPH homology kinase 3; developmental kinase 1; embryonic brain kinase
UniProt Protein Name
Ephrin type-A receptor 7
Protein Family
UniProt Gene Name
Epha7
UniProt Synonym Gene Names
Ebk; Ehk3; Mdk1; mDK-1; EHK-3; EBK
UniProt Entry Name
EPHA7_MOUSE

Uniprot Description

Function: Receptor tyrosine kinase which binds promiscuously GPI-anchored ephrin-A family ligands 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. Among GPI-anchored ephrin-A ligands, EFNA5 is a cognate/functional ligand for EPHA7 and their interaction regulates brain development modulating cell-cell adhesion and repulsion. Has a repellent activity on axons and is for instance involved in the guidance of corticothalamic axons and in the proper topographic mapping of retinal axons to the colliculus. May also regulate brain development through a caspase(CASP3)-dependent proapoptotic activity. Forward signaling may result in activation of components of the ERK signaling pathway including MAP2K1, MAP2K2, MAPK1 AND MAPK3 which are phosphorylated upon activation of EPHA7. Isoform 4 which lacks the kinase domain may regulate isoform 1 adhesive properties. Ref.8 Ref.9 Ref.10 Ref.11

Catalytic activity: ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate.

Subunit structure: Heterotetramer upon binding of the ligand. The heterotetramer is composed of an ephrin dimer and a receptor dimer. Oligomerization is probably required to induce biological responses

By similarity. Interacts (via PDZ-binding motif) with GRIP1 and PICK1 (via PDZ domain). Ref.7

Subcellular location: Cell membrane

Probable; Single-pass type I membrane protein

Probable Ref.8.

Tissue specificity: Widely expressed in embryo. In adult, expression restricted to hippocampus, testis and spleen.

Developmental stage: During visual system development, expressed in an anterior to posterior decreasing gradient stretching through the entire midbrain. This gradient has the reverse orientation to the one defined by the expression of ephrins. Isoform 4 and isoform 5 are expressed at the edges of the embryonic cranial neural fold. Ref.8 Ref.10

Post-translational modification: Phosphorylated. Isoform 4 inhibits isoform 1 phosphorylation and may regulate its function in adhesion. Ref.8

Disruption phenotype: Mice are viable, fertile and show no gross morphological or behavioral defects. However, topographic targeting errors of nasal and temporal retinal axons appear during development of the retinocollicular projections in the visual system. 10 percent of the embryos also display exencephalic overgrowth of forebrain tissues which might be the result of reduced apoptosis. Ref.9 Ref.10

Sequence similarities: Belongs to the protein kinase superfamily. Tyr protein kinase family. Ephrin receptor subfamily.Contains 1 Eph LBD (Eph ligand-binding) domain.Contains 2 fibronectin type-III domains.Contains 1 protein kinase domain.Contains 1 SAM (sterile alpha motif) domain.

Research Articles on EphA7

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Product Notes

The EphA7 epha7 (Catalog #AAA8116720) is a Cell Lysate produced from HEK293 Cells and is intended for research purposes only. The product is available for immediate purchase. The immunogen sequence is 537aa. AAA Biotech's EphA7 can be used in a range of immunoassay formats including, but not limited to, Western Blot (WB). WB: Use at an assay dependent dilution. Researchers should empirically determine the suitability of the EphA7 epha7 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. The amino acid sequence is listed below: Met1-Ile55 6. It is sometimes possible for the material contained within the vial of "EphA7, Cell Lysate" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.

Precautions

All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.

Disclaimer

Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.

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