Thermo Fisher Scientific Human MAP4K1 (HPK1), GST Tag Recombinant Protein

Applications

Tested Dilution

Publications

Kinase Assay (KA)

Assay-dependent

-

Product Specifications

Species

Human

Expression System

Baculovirus

Amino acid sequence

1-346

Tag

GST-tag

Molecular weight

65 kDa

Class

Recombinant

Type

Protein

Conjugate

Unconjugated Unconjugated Unconjugated

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.