50% Glycerol, 0.05% BSA and 0.05% preservative in PBS (pH 7.2-7.4)
Purification
Protein A affinity purification
Concentration
0.2 mg/ml
Storage
Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.
Shipping
Frozen
Form
Liquid
Calculated MW
48 kDa
Observed MW
52 kDa
Modification
Phospho
Clonality
Monoclonal
Clone No.
26A55
Isotype
IgG, Kappa
抗原与靶点信息
Antigen & Target Information
Gene Name
SMAD3
Protein Name
Smad3 (phospho Ser423/Ser425)
Background
Smad3 Ser423/Ser425 are C-terminal SSXS dual-phosphorylation sites directly catalyzed by TGF-β type-I receptor and serve as specific activation marker for Smad3 cascade. Upon TGF-β-ligand stimulation, type-I receptor kinase mediates dual-phosphorylation at Ser423/Ser425 of Smad3, inducing conformational switch, Smad4 heterocomplex assembly and nuclear import to drive transcriptional programs underlying anti-proliferation, fibrosis and EMT. This C-terminal modification provides direct readout for TGF-β-signal initiation.