Phospho-BLNK (Thr152) (E4P2P) Rabbit mAb #62144

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Supporting Data

REACTIVITY	H M
SENSITIVITY	Endogenous
MW (kDa)	68, 70
Source/Isotype	Rabbit IgG

Application Key:

WB-Western Blotting
IP-Immunoprecipitation

Species Cross-Reactivity Key:

H-Human
M-Mouse

Product Information

Product Usage Information

Application	Dilution
Western Blotting	1:1000
Immunoprecipitation	1:200

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Protocol

Specificity / Sensitivity

Phospho-BLNK (Thr152) (E4P2P) Rabbit mAb recognizes endogenous levels of BLNK protein only when phosphorylated at Thr152.

Species Reactivity:

Human, Mouse

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Thr152 of human BLNK protein.

Background

B cell linker protein (BLNK), also known as SLP-65 or BASH, is an adaptor molecule that plays key roles in B cell activation and B cell antigen receptor (BCR) engagement. BLNK acts at the interface between BCR-associated Syk and downstream signaling cascades (1,2). BLNK has multiple SH2 binding motifs (YXXP) at its amino terminus and an SH2 domain at its carboxy terminus. After BCR ligation, BLNK is phosphorylated by Syk at multiple YXXP motifs, including Tyr72, Tyr84, Tyr96, and Tyr178 (1). These phosphorylated motifs provide docking sites for signaling molecules, such as BTK, PLCγ, and Vav. These signaling molecules bind to BLNK through their SH2 domains and together activate downstream signaling pathways (3,4). Through its SH2 domain, BLNK can also interact with tyrosine-phosphorylated targets, such as HPK1, thereby recruiting them to the BCR complex for signaling (5).

Following BCR ligation, BLNK is phosphorylated at Thr152 by the hematopoietic progenitor kinase 1 (HPK1) (6). This phosphorylation induces interaction with 14-3-3ε, which leads to the disassembly of BCR signaling complexes and downregulation of BCR signaling (6).

Database Links

UniProt ID: Q8WV28

Entrez-Gene Id: 29760

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For Research Use Only. Not For Use In Diagnostic Procedures.

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