Transferases;
Transferring alkyl or aryl groups, other than methyl groups;
Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)
The enzyme, characterized from the archaeon Aeropyrum pernix, catalyses the first pathway-specific step in the biosynthesis of the core membrane C25,C25-diether lipids in some archaea. It does not act on geranylgeranyl diphosphate. cf. EC 2.5.1.41, phosphoglycerol geranylgeranyltransferase.