Anti-SMAD1 monoclonal antibody, clone BG21C8

Antibody Isotype

IgG2a

Clone

BG21C8

Species Reactivity

Rat; Human

Immunogen

Recombinant human protein purified from E.coli (His-Smad1)

Conjugate

Application Notes

Flow Cyt: 0.5μg/10⁶ cells; WB: 1/1000 - 1/2000.

Alternative Names

SMAD1; SMAD family member 1; MAD, mothers against decapentaplegic homolog 1 (Drosophila) , MADH1, SMAD, mothers against DPP homolog 1 (Drosophila); mothers against decapentaplegic homolog 1; JV4 1; MADR1; MAD homolog 1; Mad-related protein 1; TGF-beta si

Entrez Gene ID

UniProt ID

Antigen Description

The Smad family of proteins function in the transmission of extracellular signals in the TGF-β signaling pathway. Binding of TGF-β superfamily ligands to extracellular receptors triggers phosphorylation of Smad2 at a Serine-Serine-Methionine-Serine (SSMS) motif at its C-terminus. Phosphorylated Smad2 is then able to form a complex with Smad4. These complexes accumulate in the cell nucleus, where they directly participate in the regulation of gene expression. In mammals, eight Smad proteins have been identified to date. The Smad family of proteins can be divided into three functional groups: the receptor-activated Smads (R-Smads), common mediator Smads (Co-Smads), and the inhibitory Smads (I-Smads). The R-Smads are directly phosphorylated by the activated type I receptors on their C-terminal Ser-Ser-X-Ser (SSXS) motif and include Smad1, Smad2, Smad3, Smad5, and Smad8. Smad2 and Smad3 are phosphorylated in response to TGF-β and activin, whereas Smad1, Smad5, and Smad8 are phosphorylated in response to BMP (Bone Morphogenetic Protein). This C-terminal phosphorylation allows R-Smad binding to Co-Smad, Smad4, and translocation to the nucleus where they regulate TGF-β target genes. Smad6 and Smad7 belong to the I-Smad family which bind to the type I receptor or Smad4 and block their interaction with R-Smads.

Pathway

ALK1 signaling events, organism-specific biosystem; ALK2 signaling events, organism-specific biosystem; BMP receptor signaling, organism-specific biosystem; Delta-Notch Signaling Pathway, organism-specific biosystem; ErbB1 downstream signaling, organism-specific biosystem; Heart Development, organism-specific biosystem; Id Signaling Pathway, organism-specific biosystem;