Smad4 Blocking Peptide is synthetically produced from the 400-450 sequence and is suitable for use in western blot applications.
Applications
Immunodepletion/Immunocompetition
Note
STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS.
Product Properties
Formulation
Liquid form at 2.5mg/ml concentration in PBS. Up to 5% DMSO can be added. Orders with >1mg can be supplied in lyophilized powder form, or in buffer of choice.
Storage Instruction
Store at-20°C for long term storage. Avoid freeze-thaw cycles.
Synthetic peptide taken within amino acid region 400-450 on human SMAD4 protein.
Immunogen Region
400-450
Additional Info
Post Translational 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.
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. 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. 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.
Peptide Name
Mothers Against Decapentaplegic Homolog 4Mad Homolog 4Mothers Against Dpp Homolog 4Deletion Target In Pancreatic Carcinoma 4Smad Family Member 4Smad 4Smad4Hsmad4
CytoplasmNucleusCytoplasmic In The Absence Of LigandMigrates To The Nucleus When Complexed With R-SmadPdpk1 Prevents Its Nuclear Translocation In Response To Tgf-Beta
Alternative Peptide Names
Mothers Against Decapentaplegic Homolog 4 proteinMad Homolog 4 proteinMothers Against Dpp Homolog 4 proteinDeletion Target In Pancreatic Carcinoma 4 proteinSmad Family Member 4 proteinSmad 4 proteinSmad4 proteinHsmad4 proteinSMAD4 proteinDPC4 proteinMADH4 protein
