Bifunctional IPC transferase and DIPP synthase [Includes: 1L-myo-inositol-1-phosphate cytidylyltransferase (IPCT) (EC 2.7.7.74); CDP-L-myo-inositol myo-inositolphosphotransferase (DIPP synthase) (EC 2.7.8.34) (Di-myo-inositol-1,3'-phosphate-1'-phosphate synthase)]