cKit Blocking Peptide

Product no.: P-CKIT-141

General Information





cKit Peptide


Antigenic Blocking Peptide Tyrosine-protein kinase Kit Multi-epitope

Verified Applications

Immunodepletion, Immunocompetition

Peptide Description

Synthetic peptide taken within amino acid region 915-965 and 950-976 on human Tyrosine-Kinase c-Kit protein.

Physical Properties





250 µg


100 µl


Antigenic Blocking Peptide




-20C for long term storage

Application Protocol

Competition/Depletion assay

Refer to competition assay protocol



Uniprot #




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. Present in an inactive conformation in the absence of bound ligand. KITLG/SCF binding leads to dimerization and activation by autophosphorylation on tyrosine residues. Activity is down-regulated by PRKCA-mediated phosphorylation on serine residues. Inhibited by imatinib/STI-571 (Gleevec) and sunitinib; these compounds maintain the kinase in an inactive conformation.

Molecular Function

ATB binding; Cytokine binding; Metal ion binding; Stem cell factor receptor activity; Receptor signaling protein tyrosine kinase activity

Subcellular Location

Isoform 1 : Cell membrane; Single-pass type I membrane protein

Isoform 2 : Cell membrane; Single-pass type I membrane protein

Isoform 3 : Cytoplasm


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.


Monomer in the absence of bound KITLG/SCF. Homodimer in the presence of bound KITLG/SCF, forming a heterotetramer with two KITLG/SCF molecules. Interacts (via phosphorylated tyrosine residues) with the adapter proteins GRB2 and GRB7 (via SH2 domain), and SH2B2/APS. Interacts (via C-terminus) with MPDZ (via the tenth PDZ domain). Interacts (via phosphorylated tyrosine residues) with PIK3R1 and PIK3 catalytic subunit. Interacts (via phosphorylated tyrosine) with CRK (isoform Crk-II), FYN, SHC1 and MATK/CHK (via SH2 domain). Interacts with LYN and FES/FPS. Interacts (via phosphorylated tyrosine residues) with the protein phosphatases PTPN6/SHP-1 (via SH2 domain), PTPN11/SHP-2 (via SH2 domain) and PTPRU. Interacts with PLCG1. Interacts with DOK1 and TEC.

Alternative Nomenclature

c-Kit antibody

CD117 antigen antibody

KIT antibody

KIT oncogene antibody

Mast cell growth factor receptor antibody

p145 c-kit antibody

PBT antibody

Piebald trait protein antibody

Proto oncogene c Kit antibody

SCF Receptor antibody

SCFR antibody

soluble KIT variant 1 antibody

Steel Factor Receptor antibody

Stem cell factor receptor antibody

Tyrosine-protein kinase Kit antibody

v kit Hardy Zuckerman 4 feline sarcoma viral oncogene like protein antibody


Protein information supplied by UniProt



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