Reaction: CSF1R-associated phosphatidylinositol 3-kinase (PI3K) phosphorylates PI(4,5)P2
- in pathway: Signaling by CSF1 (M-CSF) in myeloid cells
Phosphatidylinositol 3-kinase (PI3K) associated with the activated receptor for CSF1, CSF1R (M-CSFR), phosphorylates phosphatidylinositol 4,5-bisphosphate (PIP2) to yield phosphatidylinositol 3,4,5-trisphosphate (PIP3) (Saleem et al. 1995, also inferred from mouse homologs). The regulatory subunit of PI3K, PIK3R1 (p85alpha), binds phosphotyrosine-723 (721 in the mouse homologs) of CSF1R (inferred from mouse homologs). PI3K is important for proliferation, migration, and anti-inflammatory activity of macrophages (inferred from mouse homologs).
Reaction - small molecule participants:
PI(3,4,5)P3 [plasma membrane]
ADP [cytosol]
ATP [cytosol]
PI(4,5)P2 [plasma membrane]
Reactome.org reaction link: R-HSA-9680389
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Reaction input - small molecules:
ATP(4-)
1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate(5-)
Reaction output - small molecules:
1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate(7-)
ADP(3-)
Reactome.org link: R-HSA-9680389