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Proteintech
MAP4K1 Polyclonal Antibody
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Product Details
23950-1-AP
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Human
Host/Isotype
Rabbit
/ IgG
Class
Polyclonal
Type
Antibody
Immunogen
MAP4K1 Fusion Protein Ag20221 (364-551 aa encoded by BC152994)
Conjugate
Form
Liquid
Concentration
0.3 mg/mL
Purification
Antigen affinity chromatography
Storage buffer
PBS, pH 7.3, with 50% glycerol
Contains
0.02% sodium azide
Storage conditions
-20°C
Shipping conditions
Wet ice (domestic); Dry ice (international)
Product Specific Information
Immunogen sequence: LRSSSPRKQ LSESSDDDYD DVDIPTPAED TPPPLPPKPK FRSPSDEGPG SMGDDGQLSP GVLVRCASGP PPNSPRPGPP PSTSSPHLTA HSEPSLWNPP SRELDKPPLL PPKKEKMKRK GCALLVKLFN GCPLRIHSTA AWTHPSTKDQ HLLLGAEEGI FILNRNDQEA TLEMLFPSRT TWVYSINNV (364-551 aa encoded by BC152994)
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.
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
Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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