Encoding over 1,100 genes within 132 million bases, chromosome 12 makes up about 4.5% of the human genome. A number of skeletal deformities are linked to chromosome 12 including hypochondrogenesis, achondrogenesis and Kniest dysplasia. Noonan syndrome, which includes heart and facial developmental defects among the primary symptoms, is caused by a mutant form of PTPN11 gene product, SH-PTP2. Chromosome 12 is also home to a homeobox gene cluster which encodes crucial transcription factors for morphogenesis, and the natural killer complex gene cluster encoding SLCtype lectin proteins which mediate the NK cell response to MHC I interaction. Trisomy 12p leads to facial development defects, seizure disorders and a host of other symptoms varying in severity depending on the extent of mosaicism and is most severe in cases of complete trisomy. The C12orf52 gene product has been provisionally designated C12orf52 pending further characterization.
Function:
Tubulin-binding protein that acts as a negative regulator of Notch signaling pathway. Shuttles between the cytoplasm and the nucleus and mediates the nuclear export of RBPJ/RBPSUH, thereby preventing the interaction between RBPJ/RBPSUH and NICD product of Notch proteins (Notch intracellular domain), leading to down-regulate Notch-mediated transcription. May play a role in neurogenesis.
Subunit:
Interacts with RBPJ/RBPSUH.
Subcellular Location:
Cytoplasm. Nucleus. Cytoplasm > cytoskeleton > centrosome. Shuttles rapidly between the cytoplasm and the nucleus. The function of centrosome localization is still unclear.
Similarity:
Belongs to the RITA family.
SWISS:
Q96K30
Gene ID:
84934
Database links:
Entrez Gene: 84934 Human
SwissProt: Q96K30 Human
Unigene: 524762 Human
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