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HPK1 or Hematopoietic progenitor kinase 1 is a hematopoietic cell-restricted member of the Ste20 serine/threonine kinase super family. HPK1 is also known as mitogen-activated protein kinase kinase kinase kinase 1(MAP4K1). HPK1 is a tissue-specific upstream activator of the MEKK/JNK/SAPK signaling pathway. HPK1 diminishes T cell receptor (TCR) signaling activity and T cell proliferation by phosphorylating the adaptor protein SLP-76.
After opening, aliquot into smaller quantities and store at -70 °C. Avoid repeating handling and multiple freeze/thaw cycles.
Supplied in 50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 10 mM glutathione, 0.1 mM EDTA, 0.25 mM DTT, 0.1 mM PMSF, 25% glycerol.
PRECISIO is a registered trademark of Sigma-Aldrich Co. LLC
recombinant | expressed in baculovirus infected Sf9 cells |
grade | PRECISIO® |
assay | ≥70% (SDS-PAGE) |
form | buffered aqueous glycerol solution |
activity | 106-166 nmol/min·mg |
mol wt | mol wt ~65 kDa |
NCBI accession no. | NM_007181 |
shipped in | dry ice |
storage temp. | ?70°C |
Gene Information | human ... MAP4K1(11184) |
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