FUNCTION: Potential guanine nucleotide exchange factor (GEF). GEF proteins activate some small GTPases by exchanging bound GDP for free GTP. Its interaction with presenilin proteins as well as its ability to stimulate Tau/MAPT phosphorylation suggest that it may be involved in Alzheimer disease. Ect...
FUNCTION: Potential guanine nucleotide exchange factor (GEF). GEF proteins activate some small GTPases by exchanging bound GDP for free GTP. Its interaction with presenilin proteins as well as its ability to stimulate Tau/MAPT phosphorylation suggest that it may be involved in Alzheimer disease. Ectopic expression in nerve cells decreases the secretion of amyloid-beta APBA1 protein and lowers the rate of cell-substratum adhesion, suggesting that it may affect the function of some small GTPase involved in the regulation of actin cytoskeleton or cell adhesion receptors (By similarity). {ECO:0000250}.
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GO - Biological processes (BP):
positive regulation of non-membrane spanning protein tyrosine kinase activity [GO:1903997]; regulation of small GTPase mediated signal transduction [GO:0051056]; small GTPase mediated signal transduction [GO:0007264]...
positive regulation of non-membrane spanning protein tyrosine kinase activity [GO:1903997]; regulation of small GTPase mediated signal transduction [GO:0051056]; small GTPase mediated signal transduction [GO:0007264]
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GO - Molecular function (MF):
guanyl-nucleotide exchange factor activity [GO:0005085]; SH3 domain binding [GO:0017124]...
guanyl-nucleotide exchange factor activity [GO:0005085]; SH3 domain binding [GO:0017124]
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GO - Cellular component (CC):
cytosol [GO:0005829]...
cytosol [GO:0005829]
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