Product nameAnti-Syk antibody
See all Syk primary antibodies
DescriptionRabbit polyclonal to Syk
Tested applicationsSuitable for: IP, WBmore details
Species reactivityReacts with: Human
Predicted to work with: Mouse, Rat, Pig
Synthetic peptide within Human Syk aa 350-400. The exact sequence is proprietary. NP_003168.2
Database link: P43405
- WB: Ramos whole cell lysate. IP: Ramos whole cell lysate.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle.
Storage bufferPreservative: 0.09% Sodium azide
Constituents: Tris buffered saline, 0.1% BSA
Concentration information loading...
PurityImmunogen affinity purified
Purification notesab245328 was affinity purified using an epitope specific to Syk immobilized on solid support.
Our Abpromise guarantee covers the use of ab245328 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|IP||Use at 2-10 µg/mg of lysate.|
|WB||1/2000 - 1/10000. Predicted molecular weight: 72 kDa.|
FunctionNon-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.
Tissue specificityWidely expressed in hematopoietic cells (at protein level). Within the B-cells compartment it is for instance expressed for pro-B-cells to plasma cells.
Sequence similaritiesBelongs to the protein kinase superfamily. Tyr protein kinase family. SYK/ZAP-70 subfamily.
Contains 1 protein kinase domain.
Contains 2 SH2 domains.
DomainThe 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.
modificationsUbiquitinated 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.
Cellular localizationCell membrane. Cytoplasm, cytosol.
- Information by UniProt
- EC 188.8.131.52 antibody
- kinase Syk antibody
- KSYK antibody
All lanes : Anti-Syk antibody (ab245328) at 0.1 µg/ml
Lane 1 : Ramos (human Burkitt's lymphoma cell line) whole cell lysate at 50 µg
Lane 2 : Ramos whole cell lysate at 15 µg
Lane 3 : Ramos whole cell lysate at 5 µg
Developed using the ECL technique.
Predicted band size: 72 kDa
Exposure time: 3 minutes
Lysates prepared in NETN buffer.
Syk was immunoprecipitated from Ramos (human Burkitt's lymphoma cell line) whole cell lysate (1 mg for IP, 20% of IP loaded) with ab245328 at 6 µg/reaction. Western blot was performed from the immunoprecipitate using ab245328 at 1 µg/ml.
Lane 1: ab245328 (Lot 1) IP in Ramos whole cell lysate.
Lane 2: ab245328 (Lot 2) IP in Ramos whole cell lysate.
Lane 3: Control IgG IP in Ramos whole cell lysate.
Detection: Chemiluminescence with exposure time of 3 minutes.
Lysates prepated in NETN buffer.
ab245328 has not yet been referenced specifically in any publications.