SASH1
This gene encodes a scaffold protein involved in the TLR4 signaling pathway that may stimulate cytokine production and endothelial cell migration in response to invading pathogens. The encoded protein has also been described as a potential tumor suppressor that may negatively regulate proliferation, apoptosis, and invasion of cancer cells, and reduced expression of this gene has been observed in multiple human cancers. Mutations in this gene may be associated with abnormal skin pigmentation in human patients.
Full Name
SAM and SH3 domain containing 1
Function
Is a positive regulator of NF-kappa-B signaling downstream of TLR4 activation. It acts as a scaffold molecule to assemble a molecular complex that includes TRAF6, MAP3K7, CHUK and IKBKB, thereby facilitating NF-kappa-B signaling activation (PubMed:23776175).
Regulates TRAF6 and MAP3K7 ubiquitination (PubMed:23776175).
Involved in the regulation of cell mobility (PubMed:23333244, PubMed:23776175, PubMed:25315659).
Regulates lipolysaccharide (LPS)-induced endothelial cell migration (PubMed:23776175).
Is involved in the regulation of skin pigmentation through the control of melanocyte migration in the epidermis (PubMed:23333244).
Biological Process
Biological Process positive regulation of angiogenesisManual Assertion Based On ExperimentIMP:MGI
Biological Process positive regulation of endothelial cell migrationManual Assertion Based On ExperimentIDA:MGI
Biological Process positive regulation of JUN kinase activityManual Assertion Based On ExperimentIMP:MGI
Biological Process positive regulation of lipopolysaccharide-mediated signaling pathwayManual Assertion Based On ExperimentIMP:MGI
Biological Process positive regulation of NIK/NF-kappaB signalingManual Assertion Based On ExperimentIMP:MGI
Biological Process positive regulation of p38MAPK cascadeManual Assertion Based On ExperimentIMP:MGI
Biological Process protein polyubiquitinationManual Assertion Based On ExperimentIDA:MGI
Biological Process regulation of epithelial cell migrationManual Assertion Based On ExperimentIMP:UniProtKB
Biological Process regulation of protein autoubiquitinationManual Assertion Based On ExperimentIDA:MGI
Biological Process regulation of protein K63-linked ubiquitinationManual Assertion Based On ExperimentIDA:MGI
Cellular Location
Cytoplasm
Involvement in disease
Dyschromatosis universalis hereditaria 1 (DUH1):
A form of dyschromatosis universalis, an autosomal dominant pigmentary genodermatosis characterized by a mixture of hyperpigmented and hypopigmented macules distributed randomly over the body, that appear in infancy or early childhood. The trunk and extremities are the dominant sites of abnormal pigmentation. Facial lesions can be seen in 50% of affected individuals, but involvement of palms and soles is unusual. Abnormalities of hair and nails have also been reported. Dyschromatosis universalis hereditaria may be associated with abnormalities of dermal connective tissue, nerve tissue, or other systemic complications.
Cancer, alopecia, pigment dyscrasia, onychodystrophy, and keratoderma (CAPOK):
An autosomal recessive genodermatosis characterized by hypo- and hyperpigmented macular skin lesions, progressive alopecia, palmoplantar keratoderma, dystrophic nails, teeth abnormalities and a predisposition to squamous cell carcinoma.