PAG1
Reactivity: Human
ELISA
Host: Rabbit
Polyclonal
HRP
Application Notes
Positive Control for Western Blot: Use 1.5x106 total splenocytes per lane.
Restrictions
For Research Use only
Format
Liquid
Concentration
Lot specific
Buffer
In PBS containing 0.02 % sodium azide.
Preservative
Sodium azide
Precaution of Use
This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Storage
4 °C,-20 °C
Storage Comment
Short Term Storage: +4°C Long Term Storage: -20°C Stable for at least 1 year after receipt when stored at -20°C.
Expiry Date
12 months
Target
PAG1
(phosphoprotein Associated with Glycosphingolipid Microdomains 1 (PAG1))
Alternative Name
PAG/Cbp
Background
PAG is a ubiquitously expressed transmembrane adapter protein. Depending on its phosphorylation status, it appears as diffuse band(s) of 80-90 kDa by SDS-PAGE, with phosphorylation leading to a shift towards a higher apparent molecular mass. Tyrosine phosphorylated PAG recruits Csk to the membrane and negatively regulates Src family kinases via Csk-mediated phosphorylation. Upon T cell receptor engagement, PAG becomes dephosphorylated, thereby displacing Csk from the membrane and enabling the activation of the Src kinases Fyn and Lck. PAG negatively regulates TCR (T cell antigen receptor)-mediated signaling in T cells and FCER1 (high affinity immunoglobulin epsilon receptor)-mediated signaling in mast cells. It promotes CSK activation and recruitment to lipid rafts, which results in LCK inhibition. It inhibits immunological synapse formation by preventing dynamic arrangement of lipid raft proteins and may be involved in cell adhesion signaling.