Name

SMAD9 Gene

SMAD family member 9

The protein encoded by this gene is a member of the SMAD family, which transduces signals from TGF-beta family members. The encoded protein is activated by bone morphogenetic proteins and interacts with SMAD4. Two transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jan 2010]

SMAD5 Gene

SMAD family member 5

The protein encoded by this gene is involved in the transforming growth factor beta signaling pathway that results in an inhibition of the proliferation of hematopoietic progenitor cells. The encoded protein is activated by bone morphogenetic proteins type 1 receptor kinase, and may be involved in cancer. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]

SMAD6 Gene

SMAD family member 6

The protein encoded by this gene belongs to the SMAD family of proteins, which are related to Drosophila 'mothers against decapentaplegic' (Mad) and C. elegans Sma. SMAD proteins are signal transducers and transcriptional modulators that mediate multiple signaling pathways. This protein functions in the negative regulation of BMP and TGF-beta/activin-signalling. Multiple transcript variants have been found for this gene.[provided by RefSeq, Sep 2014]

SMAD7 Gene

SMAD family member 7

The protein encoded by this gene is a nuclear protein that binds the E3 ubiquitin ligase SMURF2. Upon binding, this complex translocates to the cytoplasm, where it interacts with TGF-beta receptor type-1 (TGFBR1), leading to the degradation of both the encoded protein and TGFBR1. Expression of this gene is induced by TGFBR1. Variations in this gene are a cause of susceptibility to colorectal cancer type 3 (CRCS3). Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jun 2010]

SMAD1 Gene

SMAD family member 1

The protein encoded by this gene belongs to the SMAD, a family of proteins similar to the gene products of the Drosophila gene 'mothers against decapentaplegic' (Mad) and the C. elegans gene Sma. SMAD proteins are signal transducers and transcriptional modulators that mediate multiple signaling pathways. This protein mediates the signals of the bone morphogenetic proteins (BMPs), which are involved in a range of biological activities including cell growth, apoptosis, morphogenesis, development and immune responses. In response to BMP ligands, this protein can be phosphorylated and activated by the BMP receptor kinase. The phosphorylated form of this protein forms a complex with SMAD4, which is important for its function in the transcription regulation. This protein is a target for SMAD-specific E3 ubiquitin ligases, such as SMURF1 and SMURF2, and undergoes ubiquitination and proteasome-mediated degradation. Alternatively spliced transcript variants encoding the same protein have been observed. [provided by RefSeq, Jul 2008]

SMAD2 Gene

SMAD family member 2

The protein encoded by this gene belongs to the SMAD, a family of proteins similar to the gene products of the Drosophila gene 'mothers against decapentaplegic' (Mad) and the C. elegans gene Sma. SMAD proteins are signal transducers and transcriptional modulators that mediate multiple signaling pathways. This protein mediates the signal of the transforming growth factor (TGF)-beta, and thus regulates multiple cellular processes, such as cell proliferation, apoptosis, and differentiation. This protein is recruited to the TGF-beta receptors through its interaction with the SMAD anchor for receptor activation (SARA) protein. In response to TGF-beta signal, this protein is phosphorylated by the TGF-beta receptors. The phosphorylation induces the dissociation of this protein with SARA and the association with the family member SMAD4. The association with SMAD4 is important for the translocation of this protein into the nucleus, where it binds to target promoters and forms a transcription repressor complex with other cofactors. This protein can also be phosphorylated by activin type 1 receptor kinase, and mediates the signal from the activin. Alternatively spliced transcript variants have been observed for this gene. [provided by RefSeq, May 2012]

SMAD3 Gene

SMAD family member 3

The SMAD family of proteins are a group of intracellular signal transducer proteins similar to the gene products of the Drosophila gene 'mothers against decapentaplegic' (Mad) and the C. elegans gene Sma. The SMAD3 protein functions in the transforming growth factor-beta signaling pathway, and transmits signals from the cell surface to the nucleus, regulating gene activity and cell proliferation. This protein forms a complex with other SMAD proteins and binds DNA, functioning both as a transcription factor and tumor suppressor. Mutations in this gene are associated with aneurysms-osteoarthritis syndrome and Loeys-Dietz Syndrome 3. [provided by RefSeq, May 2022]

LOC100631354 Gene

SMAD specific E3 ubiquitin protein ligase 2 pseudogene

SMAD4 Gene

SMAD family member 4

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 increasing 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, May 2022]

SMURF1 Gene

SMAD specific E3 ubiquitin protein ligase 1

This gene encodes a ubiquitin ligase that is specific for receptor-regulated SMAD proteins in the bone morphogenetic protein (BMP) pathway. This protein plays a key roll in the regulation of cell motility, cell signalling, and cell polarity. Alternative splicing results in multiple transcript variants encoding different isoforms.[provided by RefSeq, Dec 2010]

SMURF2 Gene

SMAD specific E3 ubiquitin protein ligase 2

Enables SMAD binding activity; identical protein binding activity; and ubiquitin protein ligase activity. Involved in negative regulation of transforming growth factor beta receptor signaling pathway; positive regulation of trophoblast cell migration; and ubiquitin-dependent protein catabolic process. Located in nuclear speck. Part of ubiquitin ligase complex. [provided by Alliance of Genome Resources, Mar 2025]

SNIP1 Gene

Smad nuclear interacting protein 1

This gene encodes a protein that contains a coiled-coil motif and C-terminal forkhead-associated (FHA) domain. The encoded protein functions as a transcriptional coactivator that increases c-Myc activity and inhibits transforming growth factor beta (TGF-beta) and nuclear factor kappa-B (NF-kB) signaling. The encoded protein also regulates the stability of cyclin D1 mRNA, and may play a role in cell proliferation and cancer progression. Mutations in this gene are a cause of psychomotor retardation, epilepsy, and craniofacial dysmorphism (PMRED). [provided by RefSeq, Mar 2012]

AGGF1P10 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 10

LOC102723312 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene

AGGF1 Gene

angiogenic factor with G patch and FHA domains 1

This gene encodes an angiogenic factor that promotes proliferation of endothelial cells. Mutations in this gene are associated with a susceptibility to Klippel-Trenaunay syndrome. Pseudogenes of this gene are found on chromosomes 3, 4, 10 and 16.[provided by RefSeq, Sep 2010]

FHAD1 Gene

forkhead-associated (FHA) phosphopeptide binding domain 1

Predicted to act upstream of or within apoptotic process and spermatogenesis. [provided by Alliance of Genome Resources, Mar 2025]

NIFK Gene

nucleolar protein interacting with the FHA domain of MKI67

This gene encodes a protein that interacts with the forkhead-associated domain of the Ki-67 antigen. The encoded protein may bind RNA and may play a role in mitosis and cell cycle progression. Multiple pseudogenes exist on chromosomes 5, 10, 12, 15, and 19.[provided by RefSeq, Jan 2009]

LOC100270647 Gene

nucleolar protein interacting with the FHA domain of MKI67 pseudogene

AGGF1P3 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 3

AGGF1P2 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 2

AGGF1P1 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 1

AGGF1P7 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 7

AGGF1P5 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 5

AGGF1P4 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 4

AGGF1P9 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 9

AGGF1P8 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene 8

NIFKP1 Gene

nucleolar protein interacting with the FHA domain of MKI67 pseudogene 1

NIFKP2 Gene

nucleolar protein interacting with the FHA domain of MKI67 pseudogene 2

NIFKP3 Gene

nucleolar protein interacting with the FHA domain of MKI67 pseudogene 3

NIFKP4 Gene

nucleolar protein interacting with the FHA domain of MKI67 pseudogene 4

NIFKP5 Gene

nucleolar protein interacting with the FHA domain of MKI67 pseudogene 5

NIFKP6 Gene

nucleolar protein interacting with the FHA domain of MKI67 pseudogene 6

NIFKP8 Gene

nucleolar protein interacting with the FHA domain of MKI67 pseudogene 8

LOC102724937 Gene

angiogenic factor with G patch and FHA domains 1 pseudogene

LOC102724962 Gene

angiogenic factor with G patch and FHA domains 1-like

LOC100996375 Gene

angiogenic factor with G patch and FHA domains 1-like