Anti-Lck (phospho Y504)抗体(ab4901)
Key features and details
- Rabbit polyclonal to Lck (phospho Y504)
- Suitable for: WB
- Reacts with: Recombinant fragment
- Isotype: IgG
产品名称Anti-Lck (phospho Y504)抗体
参阅全部 Lck 一抗
描述兔多克隆抗体to Lck (phospho Y504)
特异性Hck [pY522] (75% homology), and Lyn [pY508] (83.3% homology) have not been tested.
经测试应用适用于: WBmore details
种属反应性与反应: Recombinant fragment
预测可用于: Mouse, Chicken
- Full length untagged recombinant human Lck protein.
Lck (p56lck), a member of the Src family of non-receptor tyrosine protein kinases, is expressed predominantly in T cells. Lck function is critical both for T cell development in the thymus and activation of mature T cells in the periphery by antigen. The activity of Lck is regulated by phosphorylation of two conserved tyrosine residues, Tyr-505 (equivalent to Tyr-529 in c-Src) and Tyr-394 (equivalent to Tyr-418 in c-Src). Tyr-505 is located near the carboxyl terminus of Lck and, when phosphorylated, associates intramolecularly with the SH2 domain in the amino-terminal half of the protein. This helps stabilise Lck in a conformation that, biologically, is relatively inactive. In the absence of phosphorylation at Tyr-505, intramolecular binding of the carboxyl terminus to the SH2 domain does not occur, and Lck exhibits increased activity in vivo.
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存放说明Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
Preservative: 0.05% Sodium azide
Constituents: PBS, 0.1% BSA
BSA is IgG and protease free
Concentration information loading...
纯度Immunogen affinity purified
纯化说明Purified from rabbit serum by sequential epitope-specific chromatography. The antibody has been negatively preadsorbed using (i) a non-phosphopeptide corresponding to the site of phosphorylation to remove antibody that is reactive with non-phosphorylated Lck, and (ii) a generic tyrosine phosphorylated peptide to remove antibody that is reactive with phospho-tyrosine (irrespective of the sequence). The final product is generated by affinity chromatography using a Lck-derived peptide that is phosphorylated at tyrosine 505.
Primary antibody说明Lck (p56lck), a member of the Src family of non-receptor tyrosine protein kinases, is expressed predominantly in T cells. Lck function is critical both for T cell development in the thymus and activation of mature T cells in the periphery by antigen. The activity of Lck is regulated by phosphorylation of two conserved tyrosine residues, Tyr-505 (equivalent to Tyr-529 in c-Src) and Tyr-394 (equivalent to Tyr-418 in c-Src). Tyr-505 is located near the carboxyl terminus of Lck and, when phosphorylated, associates intramolecularly with the SH2 domain in the amino-terminal half of the protein. This helps stabilise Lck in a conformation that, biologically, is relatively inactive. In the absence of phosphorylation at Tyr-505, intramolecular binding of the carboxyl terminus to the SH2 domain does not occur, and Lck exhibits increased activity in vivo.
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Use a concentration of 0.1 - 1 µg/ml. Predicted molecular weight: 60 kDa.
Use a concentration of 0.1 - 1 µg/ml. Predicted molecular weight: 60 kDa.
功能Tyrosine kinase that plays an essential role for the selection and maturation of developing T-cell in the thymus and in mature T-cell function. Is constitutively associated with the cytoplasmic portions of the CD4 and CD8 surface receptors and plays a key role in T-cell antigen receptor(TCR)-linked signal transduction pathways. Association of the TCR with a peptide antigen-bound MHC complex facilitates the interaction of CD4 and CD8 with MHC class II and class I molecules, respectively, and thereby recruits the associated LCK to the vicinity of the TCR/CD3 complex. LCK then phosphorylates tyrosines residues within the immunoreceptor tyrosines-based activation motifs (ITAMs) in the cytoplasmic tails of the TCRgamma chains and CD3 subunits, initiating the TCR/CD3 signaling pathway. In addition, contributes to signaling by other receptor molecules. Associates directly with the cytoplasmic tail of CD2, and upon engagement of the CD2 molecule, LCK undergoes hyperphosphorylation and activation. Also plays a role in the IL2 receptor-linked signaling pathway that controls T-cell proliferative response. Binding of IL2 to its receptor results in increased activity of LCK. Is expressed at all stages of thymocyte development and is required for the regulation of maturation events that are governed by both pre-TCR and mature alpha beta TCR. Phosphorylates RUNX3.
组织特异性Expressed specifically in lymphoid cells.
疾病相关Note=A chromosomal aberration involving LCK is found in leukemias. Translocation t(1;7)(p34;q34) with TCRB.
序列相似性Belongs to the protein kinase superfamily. Tyr protein kinase family. SRC subfamily.
Contains 1 protein kinase domain.
Contains 1 SH2 domain.
Contains 1 SH3 domain.
结构域The SH2 domain mediates interaction with SQSTM1. Interaction is regulated by Ser-59 phosphorylation.
翻译后修饰Phosphorylated on Tyr-394, which increases enzymatic activity (By similarity). Phosphorylated on Tyr-505, which decreases activity.
细胞定位Cytoplasm. Cell membrane. Present in lipid rafts in an unactive form.
- Information by UniProt
- Entrez Gene: 396460 Chicken
- Entrez Gene: 16818 Mouse
- SwissProt: P42683 Chicken
- SwissProt: P06240 Mouse
形式This protein is known to be similar in amino acid sequence to HCK (P08631), FYN (P06241), YES1 (P07947), SRC (P12931), and LYN (P07948). Therefore, cross-reactivity with these homologous proteins may be observed. We would be happy to provide immunogen alignment information upon request.
- IMD22 antibody
- LCK antibody
- Lck p56 antibody
Peptide Competition: Full length untagged recombinant human Lck protein was added to control cell extract which does not contain Lck and then resolved by SDS-PAGE on a 10% Tris-glycine gel. The proteins then were transferred to nitrocellulose and incubated with 0.50
µg/mL ab4901 antibody, following prior incubation with: (1) the appropriately phosphorylated peptide immunogen, (2) the nonphosphorylated peptide corresponding to the peptide immunogen, (3) the non-phosphorylated peptide derived from the corresponding region of Src, (4) a generic phosphotyrosine containing peptide, (5) no peptide, and (6) the phosphorylated peptide derived from the corresponding region of Src. After washing, membranes were incubated with goat F(ab’)2 anti-rabbit IgG alkaline phosphatase conjugate and bands were detected using the Tropix WesternStar detection method. The data presented here demonstrate that only the phosphopeptide corresponding to this site completely blocks t
ab4901 被引用在 5 文献中.
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