PIKKs
The phosphatidylinositol kinase-related kinase (PIKKs) family shows homology with phosphatidylinositol 3-kinases (PI3Ks) (MIM.171834) within their core catalytic domains.
PIKKs are distinct in that they are high molecular mass proteins that function as serine/threonine protein kinases rather than as lipid kinases.
Examples
SMG1