This is a family of myo-inositol-1-phosphate synthases. Inositol-1-phosphate catalyzes the conversion of glucose-6- phosphate to inositol-1-phosphate, which is then dephosphorylated to inositol. Inositol phosphates play an important role in signal transduction.
Jiyao W et al.(2023). "The conserved domain database in 2023.",