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Product name
c-Kit protein (His tag)
See all c-Kit products (10) ...
Protein description
Recombinant fragment, corresponding to amino acids 544-976 of Human c-Kit, with an N terminal His tag.
Properties
Purification notes
>80% pure by SDS-PAGE.
Biological activity
15 U/mg. One unit is defined as the amount of enzyme that will phosphorylate 1 nmol of tyrosine substrate per minute at pH 7.4 and 30°C. Assay buffer: 50 mM HEPES, pH 7.4, 3 mM MgCl2, 3 mM MnCl2, 1 mM DTT, 3 µM Na-orthovanadate, 0.1 mM ATP, 30 µg/ml Poly (Glu:Tyr)4:1 substrate, and 4 µg/ml recombinant c-Kit.
Form
Liquid
Storage instructions
Aliquot and store at -80°C. Avoid repeated freeze / thaw cycles.
This product is an active protein and may elicit a biological response in vivo, handle with caution.
Storage buffer
Preservative: None
Constituents: 50% Glycerol, 0.05% Tween 20, 3mM DTT, 25mM Tris HCl, 100mM Sodium chloride, pH 8
Concentration
Concentration information loading...
Additional notes
This protein was expressed in a Baculovirus infected Sf9 cell expression system.
Research areas
Developmental Biology >> Organogenesis >> Hematopoietic system development
Developmental Biology >> Reproduction >> Germ cell markers
Stem Cells >> Hematopoietic Progenitors >> Hematopoietic Stem Cells >> HSC markers
Stem Cells >> Hematopoietic Progenitors >> Myeloid >> Mast Cell Lineage
Cancer >> Oncoproteins/suppressors >> Oncoproteins >> Growth factor receptors
Cancer >> Signal transduction >> Protein phosphorylation >> Tyrosine kinases >> Receptor tyrosine kinases
Stem Cells >> Hematopoietic Progenitors >> Surface Molecules
Stem Cells >> Germline Stem Cells >> Embryonic Germ Cells
Neuroscience >> Neurotransmission >> Receptors / Channels >> Tyrosine Kinase Receptors
Signal Transduction >> Protein Phosphorylation >> Tyrosine Kinases >> Receptor Tyrosine Kinases
Tags & Cell Markers >> Cell Type Markers >> Tumor Associated
Immunology >> Cell Type Markers >> CD >> Cytokines
Applications
Show applications key
Our Abpromise guarantee covers the use of ab42611 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Inhibition Assay
Application notes
Inhib: Use at an assay dependent dilution. Useful for the study of enzyme kinetics, screening inhibitors and selectivity profiling.
Not yet tested in other applications.
Optimal dilutions/concentrations should be determined by the end user.
Protein info
Function
Tyrosine-protein kinase that acts as cell-surface receptor for the cytokine KITLG/SCF and plays an essential role in the regulation of cell survival and proliferation, hematopoiesis, stem cell maintenance, gametogenesis, mast cell development, migration and function, and in melanogenesis. In response to KITLG/SCF binding, KIT can activate several signaling pathways. Phosphorylates PIK3R1, PLCG1, SH2B2/APS and CBL. Activates the AKT1 signaling pathway by phosphorylation of PIK3R1, the regulatory subunit of phosphatidylinositol 3-kinase. Activated KIT also transmits signals via GRB2 and activation of RAS, RAF1 and the MAP kinases MAPK1/ERK2 and/or MAPK3/ERK1. Promotes activation of STAT family members STAT1, STAT3, STAT5A and STAT5B. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate. KIT signaling is modulated by protein phosphatases, and by rapid internalization and degradation of the receptor. Activated KIT promotes phosphorylation of the protein phosphatases PTPN6/SHP-1 and PTPRU, and of the transcription factors STAT1, STAT3, STAT5A and STAT5B. Promotes phosphorylation of PIK3R1, CBL, CRK (isoform Crk-II), LYN, MAPK1/ERK2 and/or MAPK3/ERK1, PLCG1, SRC and SHC1.
Tissue specificity
Isoform 1 and isoform 2 are detected in spermatogonia and Leydig cells. Isoform 3 is detected in round spermatids, elongating spermatids and spermatozoa (at protein level). Widely expressed. Detected in the hematopoietic system, the gastrointestinal system, in melanocytes and in germ cells.
Involvement in disease
Defects in KIT are a cause of piebald trait (PBT) [MIM:172800]. PBT is an autosomal dominant genetic developmental abnormality of pigmentation characterized by congenital patches of white skin and hair that lack melanocytes.
Defects in KIT are a cause of gastrointestinal stromal tumor (GIST) [MIM:606764].
Defects in KIT have been associated with testicular germ cell tumor (TGCT) [MIM:273300]. A common solid malignancy in males. Germ cell tumors of the testis constitute 95% of all testicular neoplasms.
Defects in KIT are a cause of acute myelogenous leukemia (AML) [MIM:601626]. 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. These mutations fall into two classes, the most common being in-frame internal tandem duplications of variable length in the juxtamembrane region that disrupt the normal regulation of the kinase activity. Likewise, point mutations in the kinase domain can result in a constitutively activated kinase.
Sequence similarities
Belongs to the protein kinase superfamily. Tyr protein kinase family. CSF-1/PDGF receptor subfamily.
Contains 5 Ig-like C2-type (immunoglobulin-like) domains.
Contains 1 protein kinase domain.
Post-translational
modifications
Ubiquitinated by SOCS6. KIT is rapidly ubiquitinated after autophosphorylation induced by KITLG/SCF binding, leading to internalization and degradation.
Autophosphorylated on tyrosine residues. KITLG/SCF binding enhances autophosphorylation. Isoform 1 shows low levels of tyrosine phosphorylation in the absence of added KITLG/SCF (in vitro). Kinase activity is down-regulated by phosphorylation on serine residues by protein kinase C family members. Phosphorylation at Tyr-568 is required for interaction with PTPN11/SHP-2, CRK (isoform Crk-II) and members of the SRC tyrosine-protein kinase family. Phosphorylation at Tyr-570 is required for interaction with PTPN6/SHP-1. Phosphorylation at Tyr-703, Tyr-823 and Tyr-936 is important for interaction with GRB2. Phosphorylation at Tyr-721 is important for interaction with PIK3R1. Phosphorylation at Tyr-823 and Tyr-936 is important for interaction with GRB7.
Cellular localization
Cell membrane and Cytoplasm. Detected in the cytoplasm of spermatozoa, especially in the equatorial and subacrosomal region of the sperm head.
Target information above from: UniProt accessionP10721
The UniProt Consortium
The Universal Protein Resource (UniProt) in 2010
Nucleic Acids Res. 38:D142-D148 (2010).
References for c-Kit protein (His tag) (ab42611)
ab42611 has not yet been referenced specifically in any publications.
Publishing research using ab42611? Please let us know so that we can cite the reference in this datasheet
Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"