Recombinant Rabbit Anti-SMAD4 Antibody (clone 22H12) (CAT#: VS4-CJ119)

• Immunogen
• A synthesized peptide derived from human SMAD4

• Host Species
• Rabbit

• Type
• Rabbit IgG

• Specificity
• Human SMAD4

• Species Reactivity
• Human

• Clone
• 22H12

• Applications
• ELISA, WB

• Conjugate
• Unconjugated

• Purification
• Affinity chromatography

• Purity
• >95% as determined by SDS-PAGE

• Format
• Liquid

• Buffer
• 50% Glycerol, 150 mM NaCl, PBS, pH 7.4.

• Preservative
• 0.02% Sodium Azide

• Storage
• Store at -20°C or -80°C upon receipt. Avoid repeated freeze.

• Application Notes
• This antibody has been tested for use in ELISA, Western Blot (1:500-1:2000).

• Alternative Names
• JIP; DPC4; MADH4; MYHRS

• Gene ID
• 4089

• UniProt ID
• Q13485

• Long Name
• SMAD family member 4

• Sequence Similarities
• Belongs to the dwarfin/SMAD family.

• Cellular Localization
• Cytoplasm, Nucleus

• Post Translation Modifications
• Phosphorylated by PDPK1.
  Monoubiquitinated on Lys-519 by E3 ubiquitin-protein ligase TRIM33. Monoubiquitination hampers its ability to form a stable complex with activated SMAD2/3 resulting in inhibition of TGF-beta/BMP signaling cascade. Deubiquitination by USP9X restores its competence to mediate TGF-beta signaling.

• Protein Refseq
• NP_005350.1

• Function
• In muscle physiology, plays a central role in the balance between atrophy and hypertrophy. When recruited by MSTN, promotes atrophy response via phosphorylated SMAD2/4. MSTN decrease causes SMAD4 release and subsequent recruitment by the BMP pathway to promote hypertrophy via phosphorylated SMAD1/5/8. Acts synergistically with SMAD1 and YY1 in bone morphogenetic protein (BMP)-mediated cardiac-specific gene expression. Binds to SMAD binding elements (SBEs) (5'-GTCT/AGAC-3') within BMP response element (BMPRE) of cardiac activating regions (By similarity).
  Common SMAD (co-SMAD) is the coactivator and mediator of signal transduction by TGF-beta (transforming growth factor). Component of the heterotrimeric SMAD2/SMAD3-SMAD4 complex that forms in the nucleus and is required for the TGF-mediated signaling (PubMed:25514493).
  Promotes binding of the SMAD2/SMAD4/FAST-1 complex to DNA and provides an activation function required for SMAD1 or SMAD2 to stimulate transcription. Component of the multimeric SMAD3/SMAD4/JUN/FOS complex which forms at the AP1 promoter site; required for synergistic transcriptional activity in response to TGF-beta. May act as a tumor suppressor. Positively regulates PDPK1 kinase activity by stimulating its dissociation from the 14-3-3 protein YWHAQ which acts as a negative regulator.

Isotype Control

• MOB-208CQ
• Rabbit IgG Isotype Control Antibody

Secondary Antibody

• 2ND-059CQ
• Goat Anti-Rabbit IgG (H&L) Antibody

• 2ND-057CQ
• Donkey Anti-Rabbit IgG (H&L) Antibody

Recommended Dilution Buffer

• MRO-0253YJ
• Reconstitution Buffer PBS