SMAD4

Gene Information
 
Gene Symbol
SMAD4
 
Aliases
DPC4, JIP, MADH4, MYHRS
 
Entrez Gene ID
 
Gene Name
SMAD family member 4
 
Chromosomal Location
18q21.2
 
HGNC ID
 
Summary
This gene encodes a member of the Smad family of signal transduction proteins. Smad proteins are phosphorylated and activated by transmembrane serine-threonine receptor kinases in response to transforming growth factor (TGF)-beta signaling. The product of this gene forms homomeric complexes and heteromeric complexes with other activated Smad proteins, which then accumulate in the nucleus and regulate the transcription of target genes. This protein binds to DNA and recognizes an 8-bp palindromic sequence (GTCTAGAC) called the Smad-binding element (SBE). The protein acts as a tumor suppressor and inhibits epithelial cell proliferation. It may also have an inhibitory effect on tumors by reducing angiogenesis and increasng blood vessel hyperpermeability. The encoded protein is a crucial component of the bone morphogenetic protein signaling pathway. The Smad proteins are subject to complex regulation by post-translational modifications. Mutations or deletions in this gene have been shown to result in pancreatic cancer, juvenile polyposis syndrome, and hereditary hemorrhagic telangiectasia syndrome. [provided by RefSeq, Aug 2017]
 
RefSeq DNA
 
RefSeq mRNA
  e!Ensembl
Gene
Transcript  
Protein

SNPs

SNP
SNP ID
Associated disease
References
Ile500Val Precocious puberty

Gene Ontology (GO)

GO ID Ontology Function Evidence Reference
GO:0000122 Biological process Negative regulation of transcription by RNA polymerase II IBA 21873635
GO:0001666 Biological process Response to hypoxia IMP 12411310
GO:0007179 Biological process Transforming growth factor beta receptor signaling pathway IBA 21873635
GO:0007179 Biological process Transforming growth factor beta receptor signaling pathway IDA 9389648, 9732876
GO:0007179 Biological process Transforming growth factor beta receptor signaling pathway IMP 25514493
Protein Information
 
Protein Name
Mothers against decapentaplegic homolog 4, MAD homolog 4, SMAD, mothers against DPP homolog 4, deleted in pancreatic carcinoma locus 4, deletion target in pancreatic carcinoma 4, mothers against decapentaplegic, Drosophila, homolog of, 4
 
Function
 
Refseq Proteins
 
UniProt
 
PDB
     
References
 
 
PubMed ID Disease SNP/Mutation Study population Ethnicity Age of study population Type of sample
Precocious puberty 
Ile500Val  
Boys:1, Girls:1 
Chinese 
Boy -4year and 7month, Girl -3years and 1month 
Blood

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