sn-3-O-phytanylglycerol 1-phosphate + 4 A => sn-3-O-(geranylgeranyl)glycerol 1-phosphate + 4 AH2
sn-3-o-phytanylglycerol 1-phosphate + 4 a => sn-3-o-(geranylgeranyl)glycerol 1-phosphate + 4 ah2
sn-3-O-phytanylglycerol 1-phosphate + 4 A => sn-3-O-(geranylgeranyl)glycerol 1-phosphate + 4 AH2
sn-3-o-phytanylglycerol 1-phosphate + 4 a => sn-3-o-(geranylgeranyl)glycerol 1-phosphate + 4 ah2