Name :
Recombinant Human c-Kit Protein (ECD, His Tag), HPLC-verified

Biological Activity :

Background :
C-Kit is a type 3 transmembrane receptor for MGF (mast cell growth factor, also known as stem cell factor). c-Kit contains 5 Ig-like C2-type (immunoglobulin-like) domains and 1 protein kinase domain. It belongs to the protein kinase superfamily, tyr protein kinase family, and CSF-1/PDGF receptor subfamily. C-Kit has tyrosine-protein kinase activity. Binding of the ligands leads to the autophosphorylation of KIT and its association with substrates such as phosphatidylinositol 3-kinase. Antibodies to c-Kit are widely used in immunohistochemistry to help distinguish particular types of tumor in histological tissue sections. It is used primarily in the diagnosis of GISTs. In GISTs, c-Kit staining is typically cytoplasmic, with stronger accentuation along the cell membranes. C-Kit antibodies can also be used in the diagnosis of mast cell tumors and in distinguishing seminomas from embryonal carcinomas. Mutations in the c-Kit gene are associated with gastrointestinal stromal tumors, mast cell disease, acute myelogenous leukemia, and piebaldism. Defects in KIT are a cause of acute myelogenous leukemia (AML). AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development. Note=Somatic mutations that lead to constitutive activation of KIT are detected in AML patients. Cancer Immunotherapy Immune Checkpoint Immunotherapy Targeted Therapy

Biological Activity :
Measured by its binding ability in a functional ELISA. Immobilized human KIT (Cat:11996-H08H) at 2 μg/mL (100 μl/well) can bind biotinylated Human KITL (Cat:10451-H08B), The EC50 of biotinylated Human KITL is 2.0-9.0 ng/mL.

Expression Host :
Human

Source :
HEK293 Cells

Tag :

Protein Accession No. :
P10721-2

NCBI Gene ID :

Synonyms :

Synonyms :
v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog

Amino Acid Sequence :

Molecular Weight :
The recombinant human KIT consists of 502 amino acids and predictes a molecular mass of 56.7 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rhKIT is approximately 86 kDa due to glycosylation.

Purity :
≥ 97 % as determined by SDS-PAGE. ≥ 90 % as determined by SEC-HPLC.

State of Matter :

Product Concentration :

Storage and Stability :
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

Endotoxin Level :
< 1.0 EU per μg of the protein as determined by the LAL method

Protein Construction :
A DNA sequence encoding the human KIT isoform 2 (P10721-2) extracellular domain (Met 1-Thr 516) was expressed, with a polyhistidine tag at the C-terminus.

Buffer Solution :
Lyophilized from sterile PBS, pH 7.4.Please contact us for any concerns or special requirements. Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hardcopy of datasheet.

Shipping :
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 unless customers require otherwise.

Redissolution :
A hardcopy of datasheet with reconstitution instructions is sent along with the products. Please refer to it for detailed information.

Synonyms :
C-Kit Protein, Human; CD117 Protein, Human; PBT Protein, Human; SCFR Protein, Human c-Kit 背景信息 C-Kit is a type 3 transmembrane receptor for MGF (mast cell growth factor, also known as stem cell factor). c-Kit contains 5 Ig-like C2-type (immunoglobulin-like) domains and 1 protein kinase domain. It belongs to the protein kinase superfamily, tyr protein kinase family, and CSF-1/PDGF receptor subfamily. C-Kit has tyrosine-protein kinase activity. Binding of the ligands leads to the autophosphorylation of KIT and its association with substrates such as phosphatidylinositol 3-kinase. Antibodies to c-Kit are widely used in immunohistochemistry to help distinguish particular types of tumor in histological tissue sections. It is used primarily in the diagnosis of GISTs. In GISTs, c-Kit staining is typically cytoplasmic, with stronger accentuation along the cell membranes. C-Kit antibodies can also be used in the diagnosis of mast cell tumors and in distinguishing seminomas from embryonal carcinomas. Mutations in the c-Kit gene are associated with gastrointestinal stromal tumors, mast cell disease, acute myelogenous leukemia, and piebaldism. Defects in KIT are a cause of acute myelogenous leukemia (AML). AML is a malignant disease in which hematopoietic precursors are arrested in an early stage of development. Note=Somatic mutations that lead to constitutive activation of KIT are detected in AML patients. Cancer Immunotherapy Immune Checkpoint Immunotherapy Targeted Therapy

References & Citations :
Andre C, et al. (1997) Sequence analysis of two genomic regions containing the KIT and the FMS receptor tyrosine kinase genes. Genomics. 39(2):216-26. Yarden Y, et al. (1987) Human proto-oncogene c-kit: a new cell surface receptor tyrosine kinase for an unidentified ligand. EMBO J. 6(11):3341-51. Leong KG, et al. (2008) Generation of a prostate from a single adult stem cell. Nature. 456(7223): 804-8. Edling CE, et al. (2007) c-Kit–a hematopoietic cell essential receptor tyrosine kinase. Int J Biochem Cell Biol. 39(11):1995-8. McIntyre A, et al. (2005) Amplification and overexpression of the KIT gene is associated with progression in the seminoma subtype of testicular germ cell tumors of adolescents and adults. Cancer Res. 65(18):8085-9.

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