KIT / c-KIT / CD117 recombinant protein

Recombinant Human KIT / c-KIT / CD117 Protein (aa 540-972, His & GST tag)

Cat. Num. AAA2545605

• Gene Names: KIT; PBT; SCFR; C-Kit; CD117
• Purity: > 92 % as determined by SDS-PAGE
• Synonyms: KIT / c-KIT / CD117; Recombinant Human KIT / c-KIT / CD117 Protein (aa 540-972; His & GST tag); UNQ9235; PRO31996; GASP-1; WFIKKNRP; hGASP-1; KIT / c-KIT / CD117 recombinant protein

• Host: Baculovirus-Insect Cells
• Purity/Purification: > 92 % as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile 50mM Tris, 100mM NaCl, pH 8.0, 20% gly, 3mM DTT
• Sequence Length: 976

• Application Notes: The recombinant human KIT (aa 540-972) /GST chimera consists of 670 amino acids and predictes a molecular mass of 76.8 kDa. It migrates as an approximately 68 KDa band in SDS-PAGE under reducing conditions.
• Predicted N Terminal: Gln 26
• Endotoxin: < 1.0 EU per mug of the protein as determined by the LAL method
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -70 degree C

SDS-PAGE

Related Product Information for KIT / c-KIT / CD117 recombinant protein

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 contains 5 Ig-like C2-type (immunoglobulin-like) domains and 1 protein kinase domain. C-Kit has a 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 type s of tumour in histological tissue sections. It is used primarily in the identification 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 identification of mast cell tumours and in distinguishing seminomas from embryonal carcinomas. Mutations in c-Kit gene are associated with gastrointestinal stromal tumors, mast cell disease, acute myelogenous lukemia, 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.

Description: A DNA sequence encoding the human KIT isoform 2 (P10721-2) cytoplasmic domain (Thr 540-Val 972) was fused with the N-terminal polyhistidine-tagged GST tag at the N-terminus.

NCBI and Uniprot Product Information

• NCBI GI #: 4557695
• NCBI GeneID: 3815
• NCBI Accession #: NP_000213.1
• NCBI GenBank Nucleotide #: NM_000222.2
• UniProt Accession #: P10721; Q6IQ28; Q99662; Q9UM99; B5A956; D5LXN2; D5M931; F5H8F8
• Molecular Weight: 46,658 Da
• NCBI Official Full Name: mast/stem cell growth factor receptor Kit isoform 1
• NCBI Official Synonym Full Names: KIT proto-oncogene receptor tyrosine kinase
• NCBI Official Symbol: KIT
• NCBI Official Synonym Symbols: PBT; SCFR; C-Kit; CD117
• NCBI Protein Information: mast/stem cell growth factor receptor Kit
• UniProt Protein Name: Mast/stem cell growth factor receptor Kit
• UniProt Gene Name: KIT
• UniProt Synonym Gene Names: SCFR; SCFR; PBT

NCBI Description

This gene encodes the human homolog of the proto-oncogene c-kit. C-kit was first identified as the cellular homolog of the feline sarcoma viral oncogene v-kit. This protein is a type 3 transmembrane receptor for MGF (mast cell growth factor, also known as stem cell factor). Mutations in this gene are associated with gastrointestinal stromal tumors, mast cell disease, acute myelogenous lukemia, and piebaldism. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

Uniprot Description

Kit: a receptor tyrosine kinase and a member of the subfamily that includes PDGF, CSF-1 and FLT-3/flk-2 receptors. Receptor for stem cell factor. Plays a critical role in hematopoietic stem cell, mast cell, melanocyte and germ cell development. Ligand binding induces autophosphorylation, dimerization and activation, leading to the recruitment and phosphorylation of downstream SH2-containing signaling components including PLC-gamma, PI3 kinase p85, SHP2 and CrkL, linking c-Kit to various cell signaling pathways. Molecular lesions that impair the kinase activity of c-Kit are associated with a variety of developmental disorders, while mutations that constitutively activate c-Kit can lead to hyperplasia and tumorigenesis. Activating mutations cause >90% of gastrointestinal stromal tumors (GIST); successfully treated with inhibitors Gleevec (imatinib, Glivec) and Sutent (Sutinib, SU11248). Activating mutations also induce mastocytosis. Autocrine/paracrine stimulation may drive some lung and other tumors. Loss of expression associated with melanoma progression. Familial loss of function mutations cause piebaldism, with defects in hair and skin pigmentation due to lack of melanocytes.

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

Chromosomal Location of Human Ortholog: 4q12

Cellular Component: extracellular space; plasma membrane

Molecular Function: cytokine binding; phosphatidylinositol-4,5-bisphosphate 3-kinase activity; protein binding; protein homodimerization activity; protein-tyrosine kinase activity; Ras guanyl-nucleotide exchange factor activity; transmembrane receptor protein tyrosine kinase activity

Biological Process: actin cytoskeleton reorganization; activation of MAPK activity; cytokine and chemokine mediated signaling pathway; dendritic cell cytokine production; detection of mechanical stimulus involved in sensory perception of sound; embryonic hemopoiesis; erythrocyte differentiation; gut development; hemopoiesis; immature B cell differentiation; inflammatory response; lamellipodium biogenesis; male gonad development; MAPKKK cascade; mast cell chemotaxis; mast cell cytokine production; mast cell degranulation; melanocyte differentiation; ovarian follicle development; peptidyl-tyrosine phosphorylation; phosphoinositide-mediated signaling; pigmentation; positive regulation of JAK-STAT cascade; positive regulation of MAPKKK cascade; positive regulation of phosphoinositide 3-kinase activity; positive regulation of phosphoinositide 3-kinase cascade; positive regulation of transcription factor activity; positive regulation of tyrosine phosphorylation of Stat1 protein; positive regulation of tyrosine phosphorylation of Stat3 protein; positive regulation of tyrosine phosphorylation of Stat5 protein; protein amino acid autophosphorylation; regulation of cell proliferation; regulation of cell shape; regulation of phosphoinositide 3-kinase cascade; signal transduction; spermatogenesis; stem cell differentiation; stem cell maintenance; T cell differentiation

Disease: Gastrointestinal Stromal Tumor; Mast Cell Disease; Piebald Trait; Testicular Germ Cell Tumor