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Syk overexpression 293T lysate (whole cell) (ab94330)

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SDS-PAGE - Syk overexpression 293T lysate (whole cell) (ab94330)
  • Western blot - Syk overexpression 293T lysate (whole cell) (ab94330)

Overview

  • Product name

    Syk overexpression 293T lysate (whole cell)
  • General notes

    ab94330 is a 293T cell transfected lysate in which Human Syk has been transiently over-expressed using a pCMV-Syk plasmid. The lysate is provided in 1X Sample Buffer. Note: For more details about how the transfected lysate was prepared view preparation notes

  • Tested applications

    Suitable for: WBmore details

Properties

  • Mycoplasma free

    Yes
  • Form

    Liquid
  • Storage instructions

    Shipped on dry ice. Upon delivery aliquot and store at -20ºC. Avoid freeze / thaw cycles.
  • Storage buffer

    Constituents: 0.01% Bromophenol blue, 2.3% Beta mercaptoethanol, 2% Sodium lauryl sulfate, 0.788% Tris HCl, 10% Glycerol (glycerin, glycerine)
  • Concentration information loading...
  • Research areas

    • Cardiovascular
    • Blood
    • Platelets
    • Signal Transduction
    • Protein Phosphorylation
    • Tyrosine Kinases
    • Other
    • Immunology
    • Innate Immunity
    • Mast Cells
  • Background

    Domain: The SH2 domains mediate the interaction of SYK with the phosphorylated ITAM domains of transmembrane proteins. Some proteins like CLEC1B have a partial ITAM domain (also called hemITAM) containing a single YxxL motif. The interaction with SYK requires CLEC1B homodimerization. Function: Non-receptor tyrosine kinase which mediates signal transduction downstream of a variety of transmembrane receptors including classical immunoreceptors like the B-cell receptor (BCR). Regulates several biological processes including innate and adaptive immunity, cell adhesion, osteoclast maturation, platelet activation and vascular development. Assembles into signaling complexes with activated receptors at the plasma membrane via interaction between its SH2 domains and the receptor tyrosine-phosphorylated ITAM domains. The association with the receptor can also be indirect and mediated by adapter proteins containing ITAM or partial hemITAM domains. The phosphorylation of the ITAM domains is generally mediated by SRC subfamily kinases upon engagement of the receptor. More rarely signal transduction via SYK could be ITAM-independent. Direct downstream effectors phosphorylated by SYK include VAV1, PLCG1, PI-3-kinase, LCP2 and BLNK. Initially identified as essential in B-cell receptor (BCR) signaling, it is necessary for the maturation of B-cells most probably at the pro-B to pre-B transition. Activated upon BCR engagement, it phosphorylates and activates BLNK an adapter linking the activated BCR to downstream signaling adapters and effectors. It also phosphorylates and activates PLCG1 and the PKC signaling pathway. It also phosphorylates BTK and regulates its activity in B-cell antigen receptor (BCR)-coupled signaling. In addition to its function downstream of BCR plays also a role in T-cell receptor signaling. Plays also a crucial role in the innate immune response to fungal, bacterial and viral pathogens. It is for instance activated by the membrane lectin CLEC7A. Upon stimulation by fungal proteins, CLEC7A together with SYK activates immune cells inducing the production of ROS. Also activates the inflammasome and NF-kappa-B-mediated transcription of chemokines and cytokines in presence of pathogens. Regulates neutrophil degranulation and phagocytosis through activation of the MAPK signaling cascade. Also mediates the activation of dendritic cells by cell necrosis stimuli. Also involved in mast cells activation. Also functions downstream of receptors mediating cell adhesion. Relays for instance, integrin-mediated neutrophils and macrophages activation and P-selectin receptor/SELPG-mediated recruitment of leukocytes to inflammatory loci. Plays also a role in non-immune processes. It is for instance involved in vascular development where it may regulate blood and lymphatic vascular separation. It is also required for osteoclast development and function. Functions in the activation of platelets by collagen, mediating PLCG2 phosphorylation and activation. May be coupled to the collagen receptor by the ITAM domain-containing FCER1G. Also activated by the membrane lectin CLEC1B that is required for activation of platelets by PDPN/podoplanin. Involved in platelet adhesion being activated by ITGB3 engaged by fibrinogen. PTM: Ubiquitinated by CBLB after BCR activation; which promotes proteasomal degradation. Autophosphorylated. Phosphorylated on tyrosine residues by LYN following receptors engagement. Phosphorylation on Tyr-323 creates a binding site for CBL, an adapter protein that serves as a negative regulator of BCR-stimulated calcium ion signaling. Phosphorylation at Tyr-348 creates a binding site for VAV1. Phosphorylation on Tyr-348 and Tyr-352 enhances the phosphorylation and activation of phospholipase C-gamma and the early phase of calcium ion mobilization via a phosphoinositide 3-kinase-independent pathway (By similarity). Phosphorylation on Ser-297 is very common, it peaks 5 minutes after BCR stimulation, and creates a binding site for YWHAG. Phosphorylation at Tyr-630 creates a binding site for BLNK. Dephosphorylated by PTPN6. Similarity: Belongs to the protein kinase superfamily. Tyr protein kinase family. SYK/ZAP-70 subfamily. Contains 1 protein kinase domain. Contains 2 SH2 domains. Tissue specificity: Widely expressed in hematopoietic cells (at protein level). Within the B-cells compartment it is for instance expressed for pro-B-cells to plasma cells.

Applications

The Abpromise guarantee

Our Abpromise guarantee covers the use of ab94330 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB
Use at an assay dependent dilution.
Notes
WB
Use at an assay dependent dilution.

Images

  • SDS-PAGE - Syk overexpression 293T lysate (whole cell) (ab94330)
    SDS-PAGE - Syk overexpression 293T lysate (whole cell) (ab94330)
    ab94330 at 15µg/lane on an SDS-PAGE gel.
  • Western blot - Syk overexpression 293T lysate (whole cell) (ab94330)
    Western blot - Syk overexpression 293T lysate (whole cell) (ab94330)
    All lanes : Anti-Syk antibody (ab57465) at 1/500 dilution

    Lane 1 : Syk overexpression 293T lysate (whole cell) (ab94330)
    Lane 2 : 293T non-transfected lysate

    Lysates/proteins at 25 µg per lane.

    Secondary
    All lanes : Goat Anti-mouse IgG (H and L) HRP conjugated at 1/2500 dilution

Protocols

  • Transfected Lysate Preparation Notes

Click here to view the general protocols

Datasheets and documents

  • SDS download

  • Datasheet download

    Download

References (0)

Publishing research using ab94330? Please let us know so that we can cite the reference in this datasheet.

ab94330 has not yet been referenced specifically in any publications.

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