Function
The phosphorylation of phosphatidylinositol (PI) to PI4P is the first committed step in the generation of phosphatidylinositol 4,5-bisphosphate (PIP2), a precursor of the second messenger inositol 1,4,5-trisphosphate (InsP3) (By similarity). Undergoes autophosphorylation and phosphorylates serine/threonine residues of protein substrates.
Sequence
MSRNLDSPVQTQMAVAVFKTPLTGASKMEGKQHHKHQHLQRQSSGRRVFVQTETGCVLGMELDRSDNVHTVKRRLQIALNFPTEESSLTYGDMVLTNDLSAVRNDSPLLLKRNFMHRSSSTPCLSPTGRDLQQKDRSGPIEILGHSDCFSIVKHMVKDIVKAMKMGVEPLPVHSGLGGAYYFRNKRGESVAIVKPTDEEPFAPNNPKGFVGKALGQPGLKSSVRVGETGFREVAAYLLDYGRFANVPPTALVKITHSVFNVNDGVKGNKPREKKLVSKIASFQKFVAHDFDASDHGTSSFPVTSVHRIGILDIRIFNTDRHGGNLLVKKLDGVGMFGQVELIPIDHGLCLPETLEDPYFEWIHWPQASLPFSDEEVDYIQSLDPVKDCDMLRRELPMIREACLRVLVLCTIFLKEASAYGLCLAEIGEMMTREFRPGEEEPSELEVVCIEAKRSVTERDVFSPRSDVVGEAEFQFDLDCDDLESVYSSKIQLTDDYFTKNPFSNGRSSLGKLEESIKEEEEDEEEEEDKTENTVPMIIMKDSFFSSAAFHDKAPSLSKLSTSMKNTHLSDTTRKNPKPLTRGKSENTSSGHKSANEQLPVSASFVKVADMKEDEWVLFLERFQELLGPAFAKRKTATLSKRQRLGTSCQF