Revision 5

#13340Store at +4C

1 Kit

(96 assays)

Species Cross Reactivity

H

UniProt ID:

#Q12866

Entrez-Gene Id:

#10461

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Product Includes Product # Quantity Color Storage Temp
Mer Rabbit mAb Coated Microwells 32088 96 tests +4C
Phospho Tyrosine Mouse Detection mAb 12982 1 ea Green (Lyophilized) +4C
Anti-mouse IgG, HRP-linked Antibody (ELISA Formulated) 13304 1 ea Red (Lyophilized) +4C
Detection Antibody Diluent 13339 11 ml Green +4C
HRP Diluent 13515 11 ml Red +4C
TMB Substrate 7004 11 ml +4C
STOP Solution 7002 11 ml +4C
Sealing Tape 54503 2 ea +4C
ELISA Wash Buffer (20X) 9801 25 ml +4C
ELISA Sample Diluent 11083 25 ml Blue +4C
Cell Lysis Buffer (10X) 9803 15 ml -20C

*The microwell plate is supplied as 12 8-well modules - Each module is designed to break apart for 8 tests.

Description

PathScan® Phospho-Mer (panTyr) Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of tyrosine-phosphorylated Mer protein. A Mer Rabbit mAb has been coated onto the microwells. After incubation with cell lysates, Mer protein (phospho and nonphospho) is captured by the coated antibody. Following extensive washing, a Phospho-Tyrosine Mouse Detection mAb is added to detect the captured phospho-Mer proteins. Anti-mouse IgG, HRP-linked antibody is then used to recognize the bound detection antibody. HRP substrate, TMB, is added to develop color. The magnitude of optical density for this developed color is proportional to the quantity of Mer protein phosphorylated on tyrosine residues.

*Antibodies in this kit are custom formulations specific to kit.

Specificity/Sensitivity

PathScan® Phospho-Mer (panTyr) Sandwich ELISA Kit recognizes endogenous levels of tyrosine-phosphorylated Mer protein in human cells, as shown in Figure 1. The kit sensitivity is shown in Figure 2. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.

Background

Mer tyrosine kinase belongs to a receptor tyrosine kinase family with Axl and Tyro3. This family is characterized by a common NCAM (neural adhesion molecule)-related extracellular domain and a common ligand, GAS6 (growth arrest-specific protein 6). Mer protein has an apparent molecular weight of 170-210 kDa due to different glycosylation patterns generated in different cell types. Mer can be activated by dimerization and autophosphorylation through ligand binding or homophilic cell-cell interaction mediated by its NCAM-like motif (1). The downstream signaling components of activated Mer include PI3 kinase, PLCγ, and MAP kinase (2). Family members are prone to transcriptional regulation and carry out diverse functions including the regulation of cell adhesion, migration, phagocytosis, and survival (3). Mer regulates macrophage activation, promotes apoptotic cell engulfment, and supports platelet aggregation and clot stability in vivo (4). Investigators have found that overexpression of Mer may play a cooperative role in leukemogenesis and may be an effective target for biologically based leukemia/lymphoma therapy (5).

  1. Ling, L. et al. (1996) J Biol Chem 271, 18355-62.
  2. Ling, L. and Kung, H.J. (1995) Mol Cell Biol 15, 6582-92.
  3. Hafizi, S. and Dahlbäck, B. (2006) Cytokine Growth Factor Rev 17, 295-304.
  4. Sather, S. et al. (2007) Blood 109, 1026-33.
  5. Keating, A.K. et al. (2006) Oncogene 25, 6092-100.

Background References

    Cross-Reactivity Key

    H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

    Trademarks and Patents

    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
    PathScan is a registered trademark of Cell Signaling Technology, Inc.
    XP is a registered trademark of Cell Signaling Technology, Inc.
    All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

    使用に関する制限

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    Revision 5
    #13340

    PathScan® Phospho-Mer (panTyr) Sandwich ELISA Kit

    PathScan® Phospho-Mer (panTyr) Sandwich ELISA Kit: Image 1 Expand Image
    Figure 1. Constitutive phosphorylation of Mer in HCC827 cells lysed in the presence of phosphatase inhibitors (phospho lysate) is detected by PathScan® Phospho-Mer (panTyr) Sandwich ELISA Kit #13340. In contrast, a low level of phospho-Mer protein is detected in HCC827 cells lysed in the absence of phosphatase inhibitors (nonphospho lysate). Similar levels of total Mer protein from both nonphospho and phospho lysates are detected by PathScan® Total Mer Sandwich ELISA Kit #13488 (upper, left). Absorbance at 450 nm is shown in the top figure while corresponding western blots using Mer (D21F11) XP® Rabbit mAb #4319 (left) and a phospho-Mer (Tyr749/753) antibody (right) are shown in the bottom figure. Phosphatase inhibitors include sodium pyrophosphate, β-glycerophosphate, and sodium orthovanadate.
    PathScan® Phospho-Mer (panTyr) Sandwich ELISA Kit: Image 2 Expand Image
    Figure 2. The relationship between protein concentration of phospho or nonphospho lysates and the absorbance at 450 nm as detected by the PathScan® Phospho-Mer (panTyr) Sandwich ELISA Kit is shown. Unstarved HCC827 cells were cultured (85% confluence) and lysed with or without addition of phosphatase inhibitors to the lysis buffer (phospho or nonphospho lysate, respectively).