Recombinant human ZAP70 (mutated Y319F) protein is a Human Full Length protein, in the 1 to 619 aa range, expressed in Baculovirus infected Sf9, with >90% purity and suitable for SDS-PAGE, FuncS.
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Key facts
- Purity
- >90% Densitometry
- Expression system
- Baculovirus infected Sf9 cells
- Tags
- GST tag N-Terminus
- Applications
- SDS-PAGE, FuncS
- Biologically active
- Yes
Reactivity data
| Application | Reactivity | Dilution info | Notes |
|---|---|---|---|
Application SDS-PAGE | Reactivity Reacts | Dilution info - | Notes - |
Application FuncS | Reactivity Reacts | Dilution info - | Notes - |
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Target data
Function
Tyrosine kinase that plays an essential role in regulation of the adaptive immune response. Regulates motility, adhesion and cytokine expression of mature T-cells, as well as thymocyte development. Contributes also to the development and activation of primary B-lymphocytes. When antigen presenting cells (APC) activate T-cell receptor (TCR), a serie of phosphorylations lead to the recruitment of ZAP70 to the doubly phosphorylated TCR component CD247/CD3Z through ITAM motif at the plasma membrane. This recruitment serves to localization to the stimulated TCR and to relieve its autoinhibited conformation. Release of ZAP70 active conformation is further stabilized by phosphorylation mediated by LCK. Subsequently, ZAP70 phosphorylates at least 2 essential adapter proteins: LAT and LCP2. In turn, a large number of signaling molecules are recruited and ultimately lead to lymphokine production, T-cell proliferation and differentiation. Furthermore, ZAP70 controls cytoskeleton modifications, adhesion and mobility of T-lymphocytes, thus ensuring correct delivery of effectors to the APC. ZAP70 is also required for TCR-CD247/CD3Z internalization and degradation through interaction with the E3 ubiquitin-protein ligase CBL and adapter proteins SLA and SLA2. Thus, ZAP70 regulates both T-cell activation switch on and switch off by modulating TCR expression at the T-cell surface. During thymocyte development, ZAP70 promotes survival and cell-cycle progression of developing thymocytes before positive selection (when cells are still CD4/CD8 double negative). Additionally, ZAP70-dependent signaling pathway may also contribute to primary B-cells formation and activation through B-cell receptor (BCR).
Alternative names
SRK, ZAP70, Tyrosine-protein kinase ZAP-70, 70 kDa zeta-chain associated protein, Syk-related tyrosine kinase
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Recombinant human ZAP70 (mutated Y319F) protein is a Human Full Length protein, in the 1 to 619 aa range, expressed in Baculovirus infected Sf9, with >90% purity and suitable for SDS-PAGE, FuncS.
Key facts
- Purity
- >90% Densitometry
- Expression system
- Baculovirus infected Sf9 cells
- Tags
- GST tag N-Terminus
- Applications
- SDS-PAGE, FuncS
- Biologically active
- Yes
- Biological activity
- The specific activity of ab204139 was determined to be 80 nmol /min/mg.
- Accession
- P43403-1
- Animal free
- No
- Species
- Human
- Concentration
- Storage buffer
pH: 7.5
Constituents: 25% Glycerol (glycerin, glycerine), 0.87% Sodium chloride, 0.79% Tris HCl, 0.31% Glutathione, 0.004% (R*,R*)-1,4-Dimercaptobutan-2,3-diol, 0.003% EDTA, 0.002% PMSF
Sequence info
Amino acid sequence
- Accession
- P43403
- Protein length
- Full Length
- Predicted molecular weight
- 95 kDa
- Amino acids
- 1 to 619
- Nature
- Recombinant
- Tags
- GST tag N-Terminus
Specifications
- Form
- Liquid
- Additional notes
Affinity purified.
General info
- Function
Tyrosine kinase that plays an essential role in regulation of the adaptive immune response. Regulates motility, adhesion and cytokine expression of mature T-cells, as well as thymocyte development. Contributes also to the development and activation of primary B-lymphocytes. When antigen presenting cells (APC) activate T-cell receptor (TCR), a serie of phosphorylations lead to the recruitment of ZAP70 to the doubly phosphorylated TCR component CD247/CD3Z through ITAM motif at the plasma membrane. This recruitment serves to localization to the stimulated TCR and to relieve its autoinhibited conformation. Release of ZAP70 active conformation is further stabilized by phosphorylation mediated by LCK. Subsequently, ZAP70 phosphorylates at least 2 essential adapter proteins: LAT and LCP2. In turn, a large number of signaling molecules are recruited and ultimately lead to lymphokine production, T-cell proliferation and differentiation. Furthermore, ZAP70 controls cytoskeleton modifications, adhesion and mobility of T-lymphocytes, thus ensuring correct delivery of effectors to the APC. ZAP70 is also required for TCR-CD247/CD3Z internalization and degradation through interaction with the E3 ubiquitin-protein ligase CBL and adapter proteins SLA and SLA2. Thus, ZAP70 regulates both T-cell activation switch on and switch off by modulating TCR expression at the T-cell surface. During thymocyte development, ZAP70 promotes survival and cell-cycle progression of developing thymocytes before positive selection (when cells are still CD4/CD8 double negative). Additionally, ZAP70-dependent signaling pathway may also contribute to primary B-cells formation and activation through B-cell receptor (BCR).
- Sequence similarities
Belongs to the protein kinase superfamily. Tyr protein kinase family. SYK/ZAP-70 subfamily.
- Post-translational modifications
Phosphorylated on tyrosine residues upon T-cell antigen receptor (TCR) stimulation. Phosphorylation of Tyr-315 and Tyr-319 are essential for ZAP70 positive function on T-lymphocyte activation whereas Tyr-292 has a negative regulatory role. Within the C-terminal kinase domain, Tyr-492 and Tyr-493 are phosphorylated after TCR induction, Tyr-492 playing a negative regulatory role and Tyr-493 a positive. Tyr-493 is dephosphorylated by PTN22.
Storage
- Shipped at conditions
- Dry Ice
- Appropriate short-term storage conditions
- -80°C
- Appropriate long-term storage conditions
- -80°C
- Aliquoting information
- Upon delivery aliquot
- Storage information
- Avoid freeze / thaw cycle
This product is an active protein and may elicit a biological response in vivo, handle with caution.
Supplementary info
- This supplementary information is collated from multiple sources and compiled automatically.
- Activity summary
ZAP70 also known as Zeta-chain-associated protein kinase 70 is a tyrosine kinase that plays an important role in T-cell receptor signaling. The protein has a molecular mass of approximately 70 kDa. ZAP70 is mainly expressed in T cells and natural killer (NK) cells. It gets activated upon T-cell receptor engagement initiating downstream signaling cascades essential for T-cell function and adaptive immune response.
- Biological function summary
ZAP70 is instrumental in the signaling cascade that activates T cells in response to antigen recognition. It forms part of a larger signaling complex following the engagement of the T-cell receptor with antigens. This complex transmits critical activation signals leading to further cellular responses such as cytokine production and cell proliferation. ZAP70's function ensures appropriate immune responses and helps maintain immune system balance.
- Pathways
ZAP70 plays an integral role in T-cell receptor signaling pathways. This protein interacts with other signaling molecules like Lck and LAT facilitating the transmission of activation signals within the cell. As part of the T-cell activation pathway ZAP70 helps to bridge receptor-ligand interactions with cellular responses enabling the immune cells to combat infections effectively.
- Associated diseases and disorders
ZAP70 mutations or dysregulations can lead to severe immunodeficiencies or autoimmune diseases. For example ZAP70 deficiency results in severe combined immunodeficiency (SCID) which severely impairs immune function. Additionally aberrant ZAP70 activity has links to certain autoimmune disorders like rheumatoid arthritis where it influences abnormal immune signaling. Understanding the biochemical pathways that involve ZAP70 provides insight into managing these diseases and developing therapeutic strategies.
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2 product images
Functional Studies - Recombinant human ZAP70 (mutated Y319F) protein (ab204139)
Sample Kinase Activity Plot showing ab204139. The specific activity of ZAP70 (mutated Y319F) was determined to be 80 nmol /min/mg.
SDS-PAGE - Recombinant human ZAP70 (mutated Y319F) protein (ab204139)
SDS-PAGE showing ab204139.
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