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Invitrogen
Human MAP4K1 (HPK1), GST Tag Recombinant Protein
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Product Details
PV6355
Product Specifications
Species
Human
Expression System
Baculovirus
Amino acid sequence
1-346
Tag
GST-tag
Molecular weight
65 kDa
Class
Recombinant
Type
Protein
Conjugate
Form
Liquid
Concentration
See Label
Purification
purified
Storage buffer
50mM tris HCl, pH 7.5, with 10mM glutathione, 25% glycerol, 0.1mM EDTA, 0.1mM PMSF, 150mM NaCl, 0.25mM DTT
Contains
no preservative
Storage conditions
-80°C, Avoid Freeze/Thaw Cycles
Shipping conditions
Dry ice
Product Specific Information
For maximum recovery please spin prior to use. Unless noted below, aliquots of the 5 µg, 10 µg and 20 µg sizes of kinase are not recommended as materials can be used in original packaging until exhausted. For larger sizes, the number of freeze/thaws may be reduced by preparing aliquots, aliquots below 20 µL are not recommended. Please never store a kinase diluted. If properly stored at -80C, this product is guaranteed for 6 months from date of purchase.
Recombinant human MAP4K1 (1-346) was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag.
• Validated in LanthaScreen™ Kinase Binding Assay
• Protocols available for simple use and optimized performance
• Multiple pack sizes available for convenient use
Related Product:
LanthaScreen™ Eu Kinase Binding Assay
Protein Form: Recombinant, Full Length
The gene accession number for MAP4K1 (HPK1) is NP_009112.1.
Target Information
MAP4K1 (also known as HPK1) or Hematopoietic progenitor kinase 1 is a hematopoietic cell-restricted member of the Ste20 serine/threonine kinase super family. MAP4K1 is a tissue-specific upstream activator of the MEKK/JNK/SAPK signaling pathway. MAP4K1 diminishes T cell receptor (TCR) signaling activity and T cell proliferation by phosphorylating the adaptor protein SLP-76. The c-Jun amino-terminal kinases (JNKs)/stress-activated protein kinases (SAPKs) play a crucial role in stress responses in mammalian cells. The mechanism underlying this pathway in the hematopoietic system is unclear, but it is a key in understanding the molecular basis of blood cell differentiation. We have cloned a novel protein kinase, termed hematopoietic progenitor kinase 1 (HPK1), that is expressed predominantly in hematopoietic cells, including early progenitor cells. HPK1 is related distantly to the p21(Cdc42/Rac1)-activated kinase (PAK) and yeast STE20 implicated in the mitogen-activated protein kinase (MAPK) cascade. Expression of HPK1 activates JNK1 specifically, and it elevates strongly AP-1-mediated transcriptional activity in vivo. HPK1 binds and phosphorylates MEKK1 directly, whereas JNK1 activation by HPK1 is inhibited by a dominant-negative MEKK1 or MKK4/SEK mutant. Interestingly, unlike PAK65, HPK1 does not contain the small GTPase Rac1/Cdc42-binding domain and does not bind to either Rac1 or Cdc42, suggesting that HPK1.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: EC 2.7.11.1; Hematopoietic progenitor kinase; hematopoietic progenitor kinase 1; MAPK/ERK kinase kinase kinase 1; MEK kinase kinase 1; MEKKK 1; Mitogen-activated protein kinase kinase kinase kinase 1
Gene Aliases: HPK1; MAP4K1
UniProt ID: (Human) Q92918
Entrez Gene ID: (Human) 11184
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